UTSA Nanophotonics and Laser Materials Research Laboratory

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UTSA Biophotonics Research and Imaging Laboratory

 

Publications


    2019
  1. Pramanik, Avijit; Gates, Kaelin; Gao, Ye; Zhang, Qinku; Han, Fengxiang X.; Begum, Salma; Rightsell, Chris; Sardar, Dhiraj; Ray, Paresh Chandra, "Composites Composed of Polydopamine Nanoparticles, Graphene Oxide, and Epsilon-Poly-L-Lysine for Removal of Waterborne Contaminants and Eradication of Superbugs," ACS Applied Nano Materials, 2019, 2, 3339−3347.
    DOI:10.1021/acsanm.9b00161
  2. L. Christopher Mimun, Gangadharan Ajithkumar, Francisco Pedraza, Chris Rightsell, Andrew T. Tsin, and Dhiraj K. Sardar, "PMAO coated Na(Gd0.5Lu0.5)F4:Nd3+ Nanocrystals as Multifunctional Contrast Agent with NIR Optical, X-ray and Magnetic Imaging Properties," Materials Science and Engineering C, Vol. 101, 283-291 (2019).
    DOI:10.1016/j.msec.2019.03.085
  3. A. Pramanik, S. Begum, C. Rightsell, K. Gates, Q. Zhang, S. Jones, Y. Gao, V. Ruppa-Kasani, R. Banerjee, J. Shukla, A. Ignatius, D. Sardar, F. Han, and P. C. Ray, "Designing Highly Crystalline Multifunctional Multicolor Luminescence Nanosystem for Tracking Breast Cancer Heterogeneity," Nanoscale Advances, Vol. 1, 1021-1034 (2019).
    DOI:10.1039/C8NA00089A
  4. Sekar Karthi, Raji Govindan, Ajithkumar Gangadharan, Gamage Chamath Dannangoda, Karen S. Martirosyan, Dhiraj K. Sardar, Santhosh Chidangi, and Easwaradas Kreedapathy Girij, "Luminomagnetic Nd3+ doped Fluorapatite coated Fe3O4 Nanostructures for Biomedical Applications," (JACERS-42240.R1), Journal of the American Ceramic Society, Vol. 102, 2558-2568 (2019).
    DOI:10.1111/jace.16090
  5. 2018
  6. E. Ortega, D. Sanchez, D. Sardar, J. Arellano, and A. Ponce, "Microstructural Analysis of Polycrystalline Er:YAG using Automated Crystal Orientation Mapping," Four-dimensional Scanning Transmission Electron Microscopy (4D-STEM): From Scanning Nanodiffraction to Ptychography and Beyond, Proceedings of Microscopy & Microanalysis, Vol. 24, 218-219 (2018).
    DOI:10.1017/S1431927618001587
  7. S. Karthi, G.A. Kumar, D.K. Sardar, C. Santhosh3, and E.K. Girija, "Synthesis and characterizations of Nd3+:Yb3+ co-doped near infrared sensitive fluorapatite nanoparticles as a bioimaging probe," Optical Materials, 77, 39-47 (2018).
    DOI:10.1016/j.optmat.2018.01.013
  8. 2017
  9. N. Saltmarsh, G.A. Kumar, Chamath Dannangoda, Karen S. Martirosyan, C. Rightsell, and D. K. Sardar, "Comment on 'Structural and NIR to visible upconversion properties of Er3+ -doped LaPO4 phosphors', "” Journal of Luminescence 192, 1133-1138 (2017).
    DOI:10.1016/j.jlumin.2017.08.035
  10. F.J. Pedraza, C. Rightsell, G.A. Kumar, J. Giuliani, C. Monton, and D.K. Sardar, "Emission enhancement through Nd3+-Yb3+ energy transfer in multifunctional NaGdF4 nanocrystals," Applied Physics Letters 110, 223107 (2017).
    DOI:10.1063/1.4984140 | supplementary material
  11. S. Karthi, G.A. Kumar, D.K. Sardar, G.C. Dannangoda, K.S. Martirosyan, E.K. Girija, "Fluorapatite coated iron oxide nanostructure for biomedical applications," Materials Chemistry and Physics 193, 356-363 (2017).
    DOI:10.1016/j.matchemphys.2017.02.047
  12. Avijit Pramanik, Stacy Jones, Francisco Pedraza, Aruna Vangara, Carrie Sweet, Mariah S. Williams, Vikram Ruppa-Kasani, Sean Edward Risher, Dhiraj Sardar, and Paresh Chandra Ray, "Fluorescent, Magnetic Multifunctional Carbon Dots for Selective Separation, Identification, and Eradication of Drug-Resistant Superbugs," ACS Omega 2, 554-562 (2017).
    DOI:10.1021/acsomega.6b00518
  13. K. Gayathri, G.A.Kumar, Solange Ivette Rivera-Manrique, C.Santhosh, and Dhiraj K. Sardar, "Optical characterization of infrared emitting Nd3+ doped hydroxyapatite nanoparticles prepared by hydrothermal method," Journal of Luminescence 185, 180-186 (2017).
    DOI:10.1016/j.jlumin.2017.01.005
  14. L. Christopher Mimun, G. Ajithkumar, Chris Rightsell, Brian W. Langloss, Michael J. Therien, Dhiraj K. Sardar, "Synthesis and characterization of Na(Gd0.5Lu0.5)F4:Nd3+, a core-shell free multifunctional contrast agent," Journal of Alloys and Compounds 695, 280-285 (2017).
    DOI:10.1016/j.jallcom.2016.10.202
  15. 2016
  16. Francisco J Pedraza, Julio C Avalos, Brian G Yust, Andrew Tsin, and Dhiraj K Sardar, "Effect of surface coating of KYb2F7:Tm3+ on optical properties and biomedical applications," Nanotechnology 27, 385601-385609 (2016).
    DOI:10.1088/0957-4484/27/38/385601/meta
  17. G.A. Kumar, D.-X. Liu, Y. Tian, M.G. Brik, D.K. Sardar, "5d–4f emission of Eu2+ and electron-vibrational interaction in several alkaline earth sulfides doped with Eu2+ and Er3+," Optical Materials 50, 199-203 (2016).
    DOI:10.1016/j.optmat.2015.10.024
  18. S. Karthi, G. Suresh Kumar, G.A. Kumar, D.K. Sardar, C. Santhosh, E.K. Girija, "Microwave assisted synthesis and characterizations of near infrared emitting Yb/Er doped fluorapatite nanoparticles," Journal of Alloys and Compounds 689, 525-532 (2016).
    DOI:10.1016/j.jallcom.2016.08.005
  19. G.G. Demirkhanyan,E.P. Kokanyan, H.G. Demirkhanyan, Dhiraj K. Sardar, and M. Aillerie, "Crystal LiNbO3-Ho3+: Material for Optical Cooling," Journal of Contemporary Physics 51, 28-34 (2016).
    DOI:10.3103/S1068337216010059
  20. G.A. Kumar, Chamath Dannangoda, Nicolas R. Balli, Karen S. Martirosyan, M. Kailasnath, L. Christopher Mimun, C. Santhosh, Dhiraj K. Sardar, "Spectroscopic and magnetic properties of neodymium doped in GdPO4 sub-micron-stars prepared by solvothermal method," Journal of Alloys and Compounds 672, 668–673 (2016).
    DOI:10.1016/j.jallcom.2016.02.165
  21. Zhong Mei, Ashish Dhanale, Ajithkumar Gangaharan, Dhiraj Kumar Sardar, Liang Tang, "Water dispersion of magnetic nanoparticles with selective Biofunctionality for enhanced plasmonic biosensing," Talanta 151 23–29, (2016).
    DOI:10.1016/j.talanta.2016.01.007
  22. N. Saltmarsh, G. A. Kumar, M. Kailasnath, Vittal Shenoy, C. Santhosh, and D. K. Sardar, "Spectroscopic characterizations of Er doped LaPO4 submicron phosphors prepared by homogeneous precipitation method," Optical Materials, 53, 24-29 (2016).
    DOI:10.1016/j.optmat.2016.01.015
  23. Praveen Devangad, V. K. Unnikrishnan, Rajesh Nayak, M. M. Tamboli, K. M. Muhammed Shameem, C. Santhosh, G. A. Kumar, and D. K. Sardar, "Performance evaluation of Laser Induced Breakdown Spectroscopy (LIBS) for quantitative analysis of rare earth elements in phosphate glasses," Optical Materials, 52, 32-37 (2016).
    DOI:10.1016/j.optmat.2015.12.001
  24. 2015
  25. G.A. Kumar, D.-X. Liu, Y. Tian, M.G. Brik, D.K. Sardar, "5d–4f emission of Eu2+ and electron-vibrational interaction in several alkaline earth sulfides doped with Eu2+ and Er3+," Optical Materials, 50,199-203 (2015).
    DOI:10.1016/j.optmat.2015.10.024
  26. M. Pokhrel, G. A. Kumar, C.-G. Ma, M. G. Brik, Brian W. Langloss, Ian N. Stanton, Michael J. Therien, D. K. Sardar, and Yuanbing Mao, "Electronic and Optical Properties of Er-doped Y2O2S Phosphors," Journal of Materials Chemistry C, 3, 11486-11496 (2015).
    DOI:10.1039/C5TC02665B
  27. Ovanesyan, Zaven; Mimun, L. Christopher; Ajith Kumar, Gangadharan; Yust, Brian; Dannangoda, Chamath; Martirosyan, Karen; Sardar, Dhiraj, "Depth-Resolved Multispectral Sub-Surface Imaging Using Multifunctional Upconversion Phosphors with Paramagnetic Properties," ACS Appl. Mater. Interfaces 7, 38, 21465-21471 (2015).
    DOI:10.1021/acsami.5b06491
  28. Viraka Nellore, Bhanu Priya; Kanchanapally, Rajashekhar; Pedraza, Francisco; Sinha, Sudarson; Pramanik, Avijit; Hamme, Ashton; Arslan, Zikri; Sardar, Dhiraj; Ray, Paresh Chandra, "Bio-Conjugated CNT Bridged 3D porous Graphene Oxide Membrane for Highly Efficient Disinfection of Pathogenic Bacteria and Removal of Toxic Metals from Water," ACS Applied Materials & Interfaces, 7, 34, 19210-19218 (2015).
    DOI:10.1021/acsami.5b05012
  29. Yongliang Shi, Avijit Pramanik, Christine Tchounwou, Francisco Pedraza, Rebecca.A. Crouch, Suhash Reddy Chavva, Aruna Vangara, Sudarson Sekhar Sinha, Stacy Jones, Dhiraj Sardar, Craig Hawker, and Paresh Chandra Ray, "Multifunctional Biocompatible Graphene Oxide Quantum Dots Decorated Magnetic Nanoplatform for Efficient Capture and Two-Photon Imaging of Rare Tumor Cells," ACS Appl. Mater. Interfaces, 7, 20, 10935-10943 (2015).
    DOI:10.1021/acsami.5b02199
  30. Rajashekhar Kanchanapally, Bhanu Priya Viraka Nellore, Sudarson Sekhar Sinha, Francisco Pedraza, Stacy J. Jones, Avijit Pramanik, Suhash Reddy Chavva, Christine Tchounwou, Yongliang Shi, Aruna Vangara, Dhiraj Sardar and Paresh Chandra Ray, "Antimicrobial Peptide-conjugated Graphene Oxide Membrane for Efficient Removal and Effective Killing of Multiple Drug Resistant Bacteria," Royal Society of Chemistry, 5, 18881-18887, (2015).
    DOI:10.1039/C5RA01321F
  31. Federico Gonzalez-Fernandez, Brandi Betts-Obregon, Brian Yust, Joshua Mimun, Dongjin Sung, Dhiraj Sardar, and Andrew T. Tsin, "Interphotoreceptor Retinoid-Binding Protein Protects Retinoids from Photodegradation," Photochemistry and Photbiology, 91, 371-378, (2015).
    DOI:10.1111/php.12416
  32. 2014
  33. Xianwen Zhang, Zhi Zhao, Xin Zhang, David B. Cordesd, Brandon Weeks, Bensheng Qiu, Kailasnath Madanan, Dhiraj Sardar, and Jharna Chaudhuri, "Magnetic and Optical Properties of NaGdF4:Nd3+, Yb3+, Tm3+ Nanocrystals with Upconversion/Downconversion Luminescence from Visible to Near-Infrared Second Window," Nano Research, 8(2): 636–648 (2014).
    DOI:10.1007/s12274-014-0548-2
  34. Zhen Fan, Brian Yust, Bhanu Priya, Viraka Nellore, Sudarson Sekhar Sinha, Rajashekhar Kanchanapally, Rebecca A. Crouch, Avijit Pramanik, Suhash Reddy Chavva, Dhiraj Sardar, and Paresh Chandra Ray, "Accurate Identification and Selective Removal of Rotavirus Using a Plasmonic – Magnetic 3D Graphene Oxide Architecture," Journal of Physical Chemistry Letters 5, 3216–3221, (2014).
    DOI:10.1021/jz501402b
  35. E. Barnes, N. H. O’Connell, N. R. Balli, M. Pokhrel, A. Movsesyan, E. Kokanyan and D. K. Sardar, "Suppression of optical damage at 532 nm in Holmium doped congruent lithium niobate," Optics Express 22, 26222–26231, (2014).
    DOI:10.1364/OE.22.026222
  36. Suhash Reddy Chavva, Avijit Pramanik, Bhanu Priya Viraka Nellore, Sudarson Sekhar Sinha, Brian Yust, Rajashekhar Kanchanapally, Zhen Fan, Rebecca A Crouch, Anant Kumar Singh, Bethany Neyland, Kimberly Robinson, Xuemei Dai, Dhiraj Sardar, Yuefeng Lu, and Paresh Chandra Ray, "Theranostic Graphene Oxide for Prostate Cancer Detection and Treatment," Particle & Particle Systems Characterization, 31: 1252–1259, (2014).
    DOI:10.1002/ppsc.201400143
  37. M. Pokhrel, L.C. Mimun, G.A. Kumar, B. Yust, A. Dhanale, L. Tang and D. K. Sardar, "Stokes Emission in GdF3:Nd3+ Nanoparticles for Bioimaging Probes," Nanoscale, 6, 1667-1674 (2014).
    DOI:10.1039/C3NR03317A
  38. 2013
  39. Ahmed, E.M., F.J. Barrera, E.A. Early, C.D. Clark, and D.K. Sardar, "Maxwell’s Equations-based Dynamic Laser-Tissue Interaction Model," Computers in Biology and Medicine, 43, 2278-2286 (2013).
    DOI:10.1016/j.compbiomed.2013.09.005
  40. V.K. Unnikrishnan, R. Nayak, P. Devangad, M.M. Tamboli, C. Santosh, G.A. Kumar, D.K. Sardar, "Calibration Based Laser-induced Breakdown Spectroscopy (LIBS) for Quantitative Analysis of Doped Rare Earth Elements in Phosphors," Materials Letters, 107, 322-324 (2013).
    DOI:10.1016/j.matlet.2013.06.036
  41. Mimun, L.C., Kumar, G.A., Pokhrel, M., Yust, B.G., Elliott, Z.G., Pedraza, F., Dhanale, A., Tang, L., Lin, A. L., Dravid, V.P., and Sardar, D.K., "Bimodal Imaging Using Neodymium Doped Gadolinium Fluoride Nanocrystals with Near-Infrared to Near-Infrared Downconversion Luminescence and Magnetic Resonance Properties,", J. Mater. Chem. B, 1, 5702-5710 (2013).
    DOI:10.1039/C3TB20905A
  42. Obregon, I., Betts-Obregon, B.S., Yust, B., Pedraza, F., Ortiz, A., Sardar, D.K., Tsin, A., "Effect of Silver Coating on Barium Titanium Oxide Nanoparticle Toxicity," Advanced Materials Research, Vol. 787, 44-407 (2013).
    DOI:10.4028/www.scientific.net/AMR.787.404
  43. M. Pokhrel, G.A. Kumar, and Sardar, D.K., "Highly efficient NIR to NIR and VIS upconversion in Er3+ and Yb3+ doped in M2O2S (M = Gd, La, Y)," J. Mater. Chem. A, 1, 11595-11606 (2013).
    DOI:10.1039/C3TA12205K
  44. Kumar, G.A., Yoo, B., Goral, D.E., Hornsby, P., Lin, A.L., Ladiwala, U., Dravid, V.P., and Sardar, D.K., "Multimodal Bioimaging using a Rare Earth Doped Gd2O2S:Yb/Er Phosphor with Upconversion Luminescence and Magnetic Resonance Properties," Journal of Materials Chemistry B, Vol. 1, 1561-1572 (2013).
    DOI:10.1039/C3TB00551H
  45. Kumar, G.A., Pokhrel, M., Sardar, D.K., "Absolute quantum yield measurements in Yb/Ho doped M2O2S (M=Y, Gd, La) upconversion phosphor," Materials Letters, Vol. 98, 86-89 (2013).
    DOI:10.1016/j.matlet.2013.02.001
  46. Pokhrel, M., Kumar, G.A., Sardar, D.K., "High upconversion quantum yield at low pump threshold in Er3+/Yb3+ doped La2O2S phosphor," Materials Letters, Vol. 99, 63-66 (2013).
    DOI:10.1016/j.matlet.2013.02.062
  47. Barrera, F.J., Yust, B.G., Mimun, L.C., Nash, K.L., Sardar, D.K.,Tsin, A., "Optical and spectroscopic properties of human whole blood and plasma with and without Y2O3 and Nd3+:Y2O3 nanoparticles," Lasers in Medical Science, Volume 28, Issue 6, pp 1559–1566 (2013).
    DOI:10.1007/s10103-013-1268-7
  48. Fan, Z., Sepati, D., Khan, S.A., Singh, A.K., Hamme, A., Yust, B., Sardar, D.K., Ray, P.C., "Popcorn shape magnetic core-plasmonic shell multifunctional nanoparticle for targeted magnetic separation & enrichment, label-free SERS imaging and photothermal destruction of multi drug resistance bacteria," Chemistry: A European Journal, Vol. 19, 2839-2847 (2013).
    DOI:10.1002/chem.201202948
  49. 2012
  50. Yust, B.G., Razavi, N., Elliott, Z.G., Pedraza, F., Tsin, A.T., Sardar, D.K., "Enhancement of nontinear optical properties of BaTiO3 nanoparticles by the addition of silver seeds," Optics Express, Vol. 20, 26511-26520 (2012).
    DOI:10.1364/OE.20.026511
  51. Kumar, G.A., Yoo, B., Goral, D.E., Hornsby, P.J., Lin, A.L., Ladiwala, U., Dravid, V.P., Sardar, D.K., "Multimodal bioimaging using a rare earth doped Gd2O2S:Yb/Er phosphor with upconversion luminescence and magnetic resonance particles," J. Mat. Chem. B, Vol. 1, 1561-1575 (2012).
    DOI:10.1039/c3tb00551h
  52. Brik, M.G., Kumar, G.A., Sardar, D.K., "Ab initio, crystal field and experimental spectroscopic studies of pure and Ni2+-doped KZnF3 crystals," Materials Chemistry and Physics, Vol. 136, 90-102 (2012).
    DOI:10.1016/j.matchemphys.2012.06.035
  53. Kumar, G.A., Pokhrel, M., Martinez, A., Sardar, D.K., "Synthesis and Upconversion Spectroscopy of Yb Er Doped M2O2S (M = La, Gd, Y) Phosphors," Science of Advanced Materials, Vol. 4, 623-630 (2012).
    DOI:10.1166/sam.2012.1329  |  PDF
  54. Kumar, G.A., Pokhrel,M., Sardar, D.K., Samuel,P., Ueda, K.I., Yanagitani, T., Yagi, H., "2.1 μm Emission Spectral Properties of Tm and Ho Doped Transparent YAG Ceramic," Science of Advanced Materials, Vol. 4, 617-622 (2012).
    DOI:10.1166/sam.2012.1328  |  PDF
  55. Pokhrel, M., Kumar, G.A., Balaji,S., Debnath,R., Sardar, D.K., "Optical characterization of Er3+ and Yb3+ co-doped barium fluorotellurite glass," Journal of Luminescence, Vol. 132, 1910-1916 (2012).
    DOI:10.1016/j.jlumin.2012.02.041
  56. Pokhrel, M., Kumar, G.A., Sardar, D.K., "Comparative studies of the spectroscopic properties of Nd3+:YAG nanocrystals, transparent ceramic and single crystal," Optical Materials Express, Vol. 2, 235-249 (2012).
    DOI:10.1364/OME.2.000235
  57. Kumar, G.A., Pokhrel, M., Sardar, D.K., "Intense visible and near infrared upconversion in M2O2S: Er (M=Y, Gd, La) phosphor under 1550 nm excitation," Materials Letters, 68, 395–398 (2012).
    DOI:10.1016/j.matlet.2011.10.087
  58. Kumar, G.A., Pokhrel, M., Martinez, A., Dennis, R.C., Villegas, I.L., Sardar, D.K., "Synthesis and spectroscopy of color tunable Y2O2S:Yb3+, Er3+ phosphors with intense emission," Journal of Alloys and Compounds, 513, 559-565 (2012).
    DOI:10.1016/j.jallcom.2011.11.006
  59. 2011
  60. Pokhrel, M., Kumar, G.A., Samuel, P., Ueda, K.I., Yanagitani,T., Yagi, H., and Sardar,D.K., "Infrared and Upconversion Spectroscopic Studies of High Er3+ Content Transparent YAG Ceramic," Optical Materials Express, Vol. 1, 1272-1285 (2011).
    DOI:10.1364/OME.1.001272
  61. Chandra, S., Gruber, J.B., Burdick, G.W., Sardar, D.K., "Fabrication and Absorption Intensity Analyses of Er2O3 Nanoparticles Suspended in Polymethyl Methacrylate," Journal of Applied Polymer Science, Vol. 122, 289–295 (2011).
    DOI:10.1002/app.34058
  62. Gruber, J.B., Vetter, U., Taniguch, T., Burdick, G.W., Hofsass, H., Chandra, S., and Sardar, D.K., "Spectroscopic Analysis of Eu3+ in Single-Crystal Hexagonal Phase AlN," Journal of Applied Physics, Vol. 110, 023104: 1-7 (2011).
    DOI:10.1063/1.3609076
  63. Gruber, J.B., Burdick, G.W., Woodward3, N.T., Dierolf, V., Chandra, S., Sardar, D.K., "Crystal-field analysis and Zeeman splittings of energy levels of Nd3+(4f3) in GaN," Journal Applied Physics 110, 043109 (2011).
    DOI:10.1063/1.3625259
  64. Pokhrel, M., Dennis, R.C., Nash, K.L., Sardar, D.K., Balaji, S., and Debnath, R., "Optical Characterization of Er3+/Yb3+ (co-doped) ions in a tellurite glass host," J. Appl. Phys., (submitted) (2011).
  65. Yust, B., Mimun, L. C., and Sardar, D.K., "Optical absorption and scattering of bovine cornea, lens, and retina in the near-infrared region," Lasers in Medical Science, 27: 413 (2011).
    DOI:10.1007/s10103-011-0927-9
  66. Yang, J., Dennis, R.C., and Sardar, D.K., "Room-Temperature Synthesis of Flowerlike Ag Nanostructures Consisting of Single Ag Nanoplates," Mater. Res. Bull. Vol. 46, 1080-1084 (2011).
    DOI:j.materresbull.2011.03.003
  67. Gruber, J.B., Valiev, U.V., Burdick, G.W., Rakhimov, S.A., Pokhrel, M., and Sardar, D.K., "Spectra, energy levels, and symmetry assignments for Stark components of Eu3+(4f6) in gadolinium gallium garnet (Gd3Ga5O12)," J. Luminance, 131 1945–1952 (2011).
    DOI:10.1016/j.jlumin.2011.03.057
  68. Yang, J. and Sardar, D.K., "One-Pot Controllable Synthesis of Gold Nanostructures with Coral-, Faceted-, and Corolla-Shape in Aqueous Solution," Journal of Nano Research 14, 47-55 (2011).
    DOI:10.4028/www.scientific.net/JNanoR.14.47  |  PDF
  69. 2010
  70. Burdick, G.W., Gruber, J.B., Nash, K.L., Chandra, S., and Sardar, D.K., "Analyses of 4f11 Energy Levels and Transition Intensities Between Stark Levels of Er3+ in Y3Al5O12," Spectroscopy Letters, 43: 5, 406-422 (2010).
    DOI:10.1080/00387010.2010.487019
  71. Gruber, J.B., Burdick, G.W., Chandra, S., and Sardar, D.K., "Analyses of the ultraviolet spectra of Er3+ in Er2O3 and Er3+ in Y2O3," J. Appl. Phys. 108, 023109 (2010)
    DOI:10.1063/1.3465615
  72. Chandrasekharan, S.R., Deepak, F.L., Gruber, J.B., and Sardar, D.K., "Synthesis, Morphology, and Optical Characterization of Nanocrystalline Er3+:Y2O3," J. Phys. Chem. C 114, 2, 874-880 (2010).
    DOI:10.1021/jp909457g
  73. 2009
  74. Gruber, J.B., Burdick, G., Valiev, U., Nash, K.L., Rakhimov, S., and Sardar, D.K., "Energy Levels and Symmetry Assignments for Stark Components of Ho3+(4f10) in Yttrium Gallium Garnet (Y3Ga5O12)," J. Appl. Phys. 106, 113110 (2009).
    DOI:10.1063/1.3259441
  75. Nash, K.L., Dennis, R.C., Ray, N.J., Gruber, J.B., and Sardar, D.K., "Absorption Intensities, Emission Cross Sections and Crystal Field analysis of Selected Intermanifold Transitions of Ho3+ in Ho3+:Y2O3 Nanocrystals," Journal of Applied Physics, Vol. 106, 063117: 1-8 (2009).
    DOI:10.1063/1.3211298
  76. Sardar, D.K., Yust, B.G., Barrera, F., Mimun, L.C., and Tsin, A.T.C., "Optical Absorption and Scattering of Bovine Cornea, Lens and Retina in the Visible Region,"” Lasers in Medical Sciences, 24: 839 (2009).
    DOI:10.1007/s10103-009-0677-0
  77. Sardar, D.K., Chandrasekharan, S.R., and Gruber, J.B., "Preparation and Spectroscopic Characterization of Nd3+:Y2O3 Nanocrystals Suspended in Poly-Methyl Methacrylate (PMMA)," Journal of Applied Physics, Vol. 105, 093105: 1-8 (2009).
    DOI:10.1063/1.3122300
  78. Gagik, G.D., Demirkhanyan, A.G., Kokanyan, E.P., Kostanyan, R.B., Gruber, J.B., Nash, K.L., and Sardar, D.K., "Phonon Effects on Zero-phonon Transitions between Stark Levels in NaBi(WO4)2:Yb3+," Journal of Applied Physics, Vol. 105, 063106: 1-7 (2009).
    DOI:10.1063/1.3095465
  79. Nash, K.L., Dennis, R.C., Gruber, J.B., and Sardar, D.K., "Intensity Analysis and Energy-Level Modeling of Nd3+ in Nd3+:Y2O3 Nanocrystals in Polymeric Hosts," Journal of Applied Physics, Vol. 105, 033102: 1-6 (2009).
    DOI:10.1063/1.3074313
  80. Gruber, J.B., Sardar, D.K., Chandrasekharan, S.R., Valiev, U.V. Juraeva, N.I., Burdick, G.W., "Modeling Optical Spectra and Van Vleck Paramagnetism in Er3+:YAlO3," Journal of Applied Physics, Vol. 104, 023112: 1-13 (2009).
    DOI:10.1063/1.3072700
  81. 2008
  82. Burdick, G.W., Gruber, J.B., Nash, K.L., Chandrasekharan, S., and Sardar, D.K., "Intensity Parameterizations for Electric-Dipole Transitions between Stark Components in Er3+:Y3Al5O12," Journal of Alloys and Compounds; 488 632–637 (2008).
    DOI:10.1016/j.jallcom.2008.11.028
  83. Valiev, U.V., Uzokov, A.A., Rakhimov, S.A., Gruber, J.B., Nash, K.L., Sardar, D.K., and Burdick, G.W., "Faraday Effect and Magnetic Susceptibility Analyses in TbAlO3," Journal of Applied Physics, Vol. 104, 073903: 1-5 (2008).
    DOI:10.1063/1.2987474
  84. Sardar, D.K., Chandrasekharan, S.R., Nash, K.L., and Gruber, J.B., "Optical Intensity Analyses of Er3+:YAlO3," Journal of Applied Physics, Vol. 104, 023102: 1-8 (2008).
    DOI:10.1063/1.2956331
  85. Gruber, J.B., Nash, K.L., Sardar, D.K., Valiev, U.V., Ter-Gabrielyan, N., and Merkle. L.D., "Modeling Optical Transitions of Er3+(4f11) in C2 and C3i Sites in Polycrystalline Y2O3," Journal of Applied Physics, Vol. 104, 023101: 1-9 (2008).
    DOI:10.1063/1.2955445
  86. Gruber, J.B., Sardar, D.K., Nash, K.L., Valiev, U.V., Sokolov, V.Y., and Rakhimov, S.A., "Non-equilibrium population distribution in excited electronic states of Tb3+ in Y3Al5O12," Journal of Applied Physics, Vol. 103, 103103: 1-6 (2008).
    DOI:10.1063/1.2921836
  87. Sardar, D.K., and Sayka, A., "Optical Properites of Trivalent Praseodymium Doped in a Polymeric Plastic Environment," Controlled Environments – Contamination Control for Life Sciences and Microelectronics, Vol. 11, No. 6, 15-19 (2008).
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  88. Sardar, D.., Chandrasekharan, S.R., Nash, K.L., Gruber, J.B., Burger, A., and Roy, U.N., "Intensity Analysis and Crystal-Field Modeling of Ho3+:KPb2Cl5 Host," Journal of Applied Physics, Vol. 103, 093112: 1-8 (2008).
    DOI:10.1063/1.2919765
  89. Sardar, D.K., Nash, K.L., Yow, R.M., Gruber, J.B., Sayka, A., "Rare-Earth Doped Nanocrystals for Biosensing and Imaging," Biophotonics International, Vol. 15, 45-48 (2008).
    PDF
  90. Sardar, D.K., Yow, R.M., and Gruber, J.B., "Optical Absorption Intensities of Trivalent Erbium in a 2-Hydroxyethyl Methacrylate (HEMA) Polymeric Host," Optical Materials, Vol. 30, 987-992 (2008).
    DOI:10.1016/j.optmat.2007.05.029
  91. Gruber, J.B., Nash, K.L., Yow, R.M., Sardar, D.K., Valiev, U.V., Uzokov, A.A., and Burdick, G.W., "Spectroscopic and Magnetic Susceptibility Analyses of the 7FJ and 5D4 Energy Levels of Tb3+(4f8) in TbAlO3,” Journal Luminescence, Vol. 128, 1271-1284 (2008).
    DOI:10.1016/j.jlumin.2007.12.041
  92. 2007
  93. Sardar, D.K., Sayka, A., and Yow, R.M., "Characterization of Optical Properites of Polyimide Precursors," Semiconductor Manufacturing, Vol. 8, Issue 1; Web Exclusive: (2007).
    PDF
  94. Gruber, J.B., Sardar, D.K., Yow, R.M.,Valiev, U.V., Mukhamadiev, A.K., Sokolov, V.Y., Amin, I., Lenguel, K., Kachur, I.S., Piryatinska, V.G., and Zandi, B., "Analysis of the Optical and Magneto-optical Spectra of Tb3Ga5O12," Journal of Applied Physics, Vol. 101, 023108: 1-14 (2007).
    DOI:10.1063/1.2408344
  95. Valiev, U.V., Gruber, J.B., Sardar, D.K., Zandi, B., Kachur, I.S., Mukhammadiev, A.K., V.G. Piryatinskaya, V.Y. Sokolov, and I.S. Edelman, "Zeeman Effect and Stark Splitting of the Electronic States of the Rare-Earth Ion in the Paramagnetic Garnets Tb3Ga5O12 and Tb3Al5O12," Physics of the Solid State, Vol. 49, 91-98 (2007).
    DOI:10.1134/S1063783407010167
  96. Sardar, D.K., Swanland, G.Y., Yow, R.M., Thomas, R.J., and Tsin, A.T.C., "Optical Properites of Ocular Tissues in the Near Infrared Region," Lasers in Medical Science, Vol. 22, 46-52 (2007).
    DOI:10.1007/s10103-006-0421-y
  97. Gagik, G.D., Babajanyan, V.G., Kokanyan, E.P., Kostanyan, R.B., Gruber, J.B., Valiev, U.V., and Sardar, D.K., "Spectroscopic Properites of the NaBi(WO4)2:Yb3+ Crystal," Optical Materials, Vol. 29, 1107-1110 (2007).
    DOI:10.1016/j.optmat.2006.06.001
  98. Valiev, U.V., Gruber, J.B., Sardar, D.K., Mukhammadiev, A.K., Rakhimov, Sh.A., Sokolov, V.Yu., "Features of Magneto-optical Spectra in Tb3Ga5O12," Optics and Spectroscopy, Vol. 102, 805-812 (2007).
    DOI:10.1134/S0030400X07060185
  99. Gruber, J.B., Sardar, D.K., Nash, K.L., Yow, R.M., Gorski, W., and Zhang, M., "Spectral Analysis of Synthesized Nanocrystalline Aggregates of Er3+:Y2O3," Journal of Applied Physics 101, 113116 (2007).
    DOI:10.1063/1.2739316
  100. Sardar, D.K., Nash, K.L., Yow, R.M., and Gruber, J.B., "Optical Absorption Intensity Analysis and Emission Cross Sections for the Intermanifold Transition of Er3+(4f3) in Nanocrystalline Aggregates of Er3+:Y2O3," Journal of Applied Physics, 101, 113115 (2007).
    DOI:10.1063/1.2739301
  101. 2006
  102. Sardar, D.K., Douglas Dee, K.L. Nash, K.L., Yow, R.M., and Gruber, J.B., "Optical Absorption Intensity Analysis and Emission Cross Sections for the Intermanifold and the Inter-Stark Transitions of Nd3+(4f3) in Polycrystalline Ceramic Y2O3," Journal of Applied Physics, Vol. 100, 123106: 1-7 (2006).
    DOI:10.1063/1.2402970
  103. Sardar, D.K., Yow, R.M., Gruber, J.B., Allik, T.H., and Zandi, B., "Stark Components of Lower-lying Manifolds and Emission Cross Sections of Intermanifold and Inter-Stark Transitions of Nd3+(4f3) in Polycrystalline Ceramic Garnet Y3Al5O12," Journal of Luminescence, Vol. 116, 145-150 (2006).
    DOI:10.1016/j.jlumin.2005.08.003
  104. Gruber, J.B., Sardar, D.K., Johnson, D.M., Yow, R.M., Coeckelenberg, C.H., Nijjar, A., "Ligand-field Splitting of the Energy Levels of Nd3+(4f3) in 2-Hydroxethyl Methacrylate Polymer (HEMA)," Polymer International, Vol. 55, 1007-1012 (2006).
    DOI:10.1002/pi.2059
  105. Gruber, J.B., Russell III, C.C., Nijjar, A., Yow, R.M., Zandi, B., Sardar, D.K., and Burger, A., "Modeling the Crystal-Field splitting of Energy Levels of Er3+(4f11) in Charge-compensated Sites of KPb2Cl5," Journal of Applied Physics, Vol. 100, 043108: 1-6 (2006).
    DOI:10.1063/1.2244416
  106. Sardar, D.K., Yow, R.M., Swanland, G.Y., and Thomas, R.J., "Opitcal Properties of Ocular Tissues in the Near Infrared Region," Lasers in Medical Science, Vol. Springer-Verlag, 1-7 (2006).
    DOI:10.1007/s10103-006-0421-y
  107. Sardar, D.K., Nash, K.L., Yow, R.M., and Gruber, J.B., "Absorption Intensities and Emission Cross Sections of Tb3+(4f8) in TbAlO3," Journal of Applied Physics, Vol. 100, 083108: 1-5 (2006).
    DOI:10.1063/1.2358401
  108. Sardar, D.K., Nakade, R., Sayka, A., and Yow, R.M., "Efficient Cleaning of Silicon Wafers using Ultrasonic Technology" Controlled Environments - Contamination Control for Life Sciences and Microelectronics, Web Exclusive: 1-8 (2006).
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  109. Gruber, J. B., Allik, T., Sardar, D. K., Scipsick, M., and Wechsler, B., “Crystal Growth and Spectroscopic Characterization of Yb3+:LiTaO3," Journal of Luminescence, 117 233–238 (2006).
    DOI:10.1016/j.jlumin.2005.09.007
  110. 2005
  111. Sardar, D.K., Yow, R.M., Tsin, A.T.C., and Sardar, R., "Optical Scattering, Absorption, Polarization Healthy and Neo-vascularized Human Retinal Tissues," Journal of Biomedical Optics, (2005).
    DOI:10.1117/1.2065867
  112. Sardar, D.K., Salinas, F.S., Yow, R.M., and Tsin, A.T., "Polarization Characterization of Neo-vascularized Ocular Tissues," Biophysical Journal, Vol. 89, 1-3 (2005).
    DOI:10.1529/biophysj.105.900122
  113. Sardar, D.K., Coeckelenberg, C., Yow, R.M., Gruber, J.B., and Allik, T.H., "Optical Absorption Intensities and Intermanifold Emission Cross Sections of Trivalent Erbium Ions in Calcium Fluorophosphate" Journal of Applied Physics, Vol. 98, 033535(1)-033535(6) (2005).
    DOI:10.1063/1.2005382
  114. Bahram, Z., Gruber, J.B., Sardar, D.K., and Allik, T.H., "Modeling of Er in Ceramic YAG and Comparison with Single-Crystal YAG," SPIE Proceedings, Laser Source and System Technology for Defense and Security, Vol. 5792, 26-33 (2005).
    DOI:10.1117/12.602938
  115. Sardar, D.K., Yow, R.M., Sayka, A., Coeckelenberg, C., and Gruber, J.B., "Spectroscopic Analysis of Nd3+(4f3) Absorbtion Intensities in a Plastic Host (HEMA)," Polymer International Vol. 54, 412-417 (2005).
    DOI:10.1002/pi.1708
  116. Gruber, J.B., Nijjar, A.S., Sardar, D.K., Yow, R.M., Russell III, C.C., Zandi, B., and Allik, T.H., "Spectral Analysis and Energy-level Structure of Er3+(4f11) in Polycrystalline Ceramic Garnet Y3Al5O12," Journal of Applied Physics, Vol. 97, 063519(1)-063519(8) (2005).
    DOI:10.1063/1.1861148
  117. Sardar, D.K., Russell III, C.C., Gruber, J.B., and Allik, T.H., "Absorption Intensities and Emission Cross Sections of Principal Intermanifold and Inter-Stark Transitions of Er3+(4f11) in Polycrystalline Ceramic Garnet Y3Al5O12," Journal of Applied Physics, Vol. 97, 123501:1-6 (2005).
    DOI:10.1063/1.1928327
  118. 2004
  119. Sardar, D.K., Salinas, F.S., Perez, J.C., and Tsin, A.T.C., "Optical Characterization of Bovine Retinal Tissues," Journal of Biomedical Optics, Vol. 9, 624-631 (2004).
    DOI:10.1117/1.1688813
  120. Sardar, D.K., Bradley, W.M., Yow, R.M., Gruber, J.B., and Zandi, B., "Optical Transitions and Absorption Intensities of Dy3+(4f9) in YSGG Laser Host" Journal of Luminescence, Vol. 106, 195-203 (2004).
    DOI:10.1016/j.jlumin.2003.09.006
  121. Sardar, D.K., Russell III, C.C., Yow, R.M., Gruber, J.B., Zandi, B., and Kokanyan, E.P., "Spectroscopic Analysis of the Er3+(4f11) Absorption Intensities in NaBi(WO4)2," Journal of Applied Physics, Vol. 95, 1180-1184 (2004).
    DOI:10.1063/1.1637139
  122. Sardar, D.K. and Russell III, C.C., "Optical Transitions, Absorption Intensities, and Inter-manifold Emission Cross-sections of Pr3+(4f2) in Ca5(PO4)3F Crystal Host," Journal of Applied Physics, Vol. 95, 5334-5339 (2004).
    DOI:10.1063/1.1690092
  123. Gruber, J.B., Sardar, D.K., Zandi, B., Merkle, L.D., and Kokanyan, E.P., "Modeling the Crystal-Field Splitting of the Energy Levels of Er3+ in Charge-Compensated Sites in Lithium Niobate" Physical Review B, Vol. 69, 195103(1)-195103(10) (2004).
    DOI:10.1103/PhysRevB.69.195103
  124. Sardar, D.K., Sayka, A., and Yow, R.M., "Optical Characterization of Positive Deep UV Photoresist," Semiconductor International, Web Exclusive, Article ID:CA415043, 1-12 (2004).
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  125. Gruber, J.B., Sardar, D.K., Russell III, C. ., Yow, R.M., and Allik, T.H., "Energy-Level Structure and Spectral Analysis of Nd3+(4f3) in Polycrystalline Ceramic Garnet Y3Al5O12," Journal of Applied Physics, Vol. 96, 3050-3056 (2004).
    DOI:10.1063/1.1776320
  126. Merkle, L.D., Dubinsky, M., Zandi, B., Gruber, J.B., Sardar, D.K., and Kokanyan, E.P., "Spectroscopy of Potential Laser Material Yb3+(4f13) in NaBi(WO4)2," Journal of Optical Materials, Vol. 27, 343-349 (2004).
    DOI:10.1016/j.optmat.2004.02.030
  127. Gruber, J.B., Sardar, D.K., Allik, T.H., and Zandi, B., "Spectra and Energy Levels of Nd3+(4f3) in Stoichiometric NdP5O14," Journal of Optical Materials, Vol. 27, 351-358 (2004).
    DOI:10.1016/j.optmat.2004.07.001
  128. Salinas, F.S., Sardar, D.K., Tsin, A.T., and Perez, J.C., "Optical Characterization of Healthy and Neo-vascularized Human Ocular Tissues," Proceedings of SPIE – The International Society of Optical Engineering, Progress in Biomedical Optics and Imaging, Fabrice Manns, Per G. Soderberg, and Arthur Ho, Eds., Vol. 5314, 15-23 (2004)
    DOI:10.1117/12.524166
  129. Sardar, D.K. and Yow, R.L., "Mueller Matrix of Backscattered Light of a Chicken Embryo," Proceedings of SPIE – The International Society of Optical Engineering, Progress in Biomedical Optics and Imaging, Fabrice Manns, Per G. Soderberg, and Arthur Ho, Eds., Vol. 5314, 10-14 (2004).
    DOI:10.1117/12.523822
  130. 2003
  131. Sardar, D.K., Gruber, J.B., Zandi, B., Hutchinson, J.A., and Trussell, C.W., "Judd-Ofelt Analysis of the Er3+(4f11) absorption intensities in Phosphate Glass: Er3+, Yb3+," Journal of Applied Physics, Vol. 93, 2041-2046 (2003).
    DOI:10.1063/1.1536738
  132. Sardar, D.K., Bradley, W.M., Perez, J.C., Gruber, J.B., Zandi, B., Hutchinson, J.A., Trussell, C.W., and Kokta, M.R., "Judd-Ofelt Analysis of the Er3+(4f11) Absorption Intensities in Er3+-Doped Garnets," Journal of Applied Physics, Vol. 93, 2602-2607 (2003).
    DOI:10.1063/1.1543242
  133. Gruber, J.B., Sardar, D.K., Zandi, B., Hutchinson, J.A., and Trussell, C.W., "Spectra and Energy Levels of Er3+(4f11) in Gd3Ga5O12," Journal of Applied Physics, Vol. 93, 3137-3140 (2003).
    DOI:10.1063/1.1544647
  134. Gruber, J.B., Sardar, D.K., Zandi, B., Reynolds, T.A., Alekel, T., and Keszler, D.A., "Spectra and Energy Levels of Nd3+ in LaSc3(BO3)4," Journal of Applied Physics, Vol. 93, 3345-3351 (2003).
    DOI:10.1063/1.1556185
  135. Gruber, J.B., Sardar, D.K., Zandi, B., Hutchinson, J.A., and Trussell, J A., "Modeling the Absorption Spectra of Er3+ and Yb3+ in Phosphate Glass," Journal of Applied Physics, Vol. 94, 4835-4840 (2003)
    DOI:10.1063/1.1607523
  136. Gruber, J.B., Sardar, D.K., Russell III, C.C., Yow, R.M., Zandi, B., and Kokanyan, E.P., "Spectra and Energy Levels of Er3+(4f11) in NaBi(WO4)2," Journal of Applied Physics, Vol. 94, 7128-7135 (2003).
    DOI:10.1063/1.1625415
  137. Sardar, D.K., Tsin, A.T.C., Salinas, F.S., and Perez, J.J., "Optical Polarization of Neo-vascularized Human Ocular Tissues," Proceedings of SPIE – The International Society of Optical Engineering, Fabrice Manns, Per G. Soderberg, and Arthur Ho, Eds., Vol. 4951, 1-8 (2003).
    DOI:10.1117/12.477947
  138. 2002
  139. Sardar, D.K. and Castano, F., "Characterization of Spectroscopic and Laser Properites of Pr3+ in Sr5(PO4)3F Crystal," Journal of Applied Physics, Vol. 91, 911-915 (2002).
    DOI:10.1063/1.1427433
  140. Sardar, D.K., Gruber, J.B., Zandi, B., Ferry, M., and Kokta, M.R., "Spectroscopic Properites of Co2+ in Related Spinels," Journal of Applied Physics, Vol. 91, 4846-4852 (2002).
    DOI:10.1063/1.1455153
  141. Sardar, D.K., Sayka, A., M. Bradley, W., Perez, J.C., "Optical Characterization of i-Line Photoresist," Semiconductor International, Vol. 25, Web Exclusive:1-8 (2002).
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  142. Sardar, D.K., and Salinas, F.S.,"Optical Properites of a Laser Dye in a Solid State Polymeric Host," Journal of Applied Physics, Vol. 91, 9598-9602 (2002).
    DOI:10.1063/1.1476967
  143. Sardar, D.K., French, J.A., Castano, F., and Sayka, A., "Temperature Effects on 1.0 and 1.3 μm Emission Lines of Nd3+ in LaSc3(BO3)4 Crystal Host," Journal of Applied Physics, Vol. 91, 9629-9634 (2002).
    DOI:10.1063/1.1476963
  144. 2001
  145. Sardar, D.K., Yow, R.M., and Sayka, A., "Crystal-field Splitting and Phonon Effects on a Sharp Emission Line within a Manifold of Pr3+ in Ca5(Po4)3F Laser Host," Physica Status Solidi (b), Vol. 223, 691-700 (2001).
    DOI:10.1002/1521-3951(200102)223:3<691::AID-PSSB691>3.0.CO;2-C
  146. Sardar, D.K., Mayo, M.L., and Glickman, R.D., "Optical Characterization of Melanin," Journal of Biomedical Optics, Vol. 6, 404-411 (2001).
    DOI:10.1117/1.1411978
  147. Sardar, D.K., Yow, R.M., Sayka, A., and Mayo, M.L., "Optical Characterization of Positive Photoresist," Semiconductor International, Vol. 24, 163-174 (2001).
    PDF
  148. Gruber, J.B., Reynolds, T.A., Alekel, T., Sardar, D.K., Zandi, B., and Keszler, D., "Spectra and Energy Levels of Co2+ in Zinc Metaborate,& Physical Review B, Vol. 64, 045111:1-7 (2001).
    DOI:10.1103/PhysRevB.64.045111
  149. Sardar, D.K., Mayo, M.L., and Yow, R.M., "Optical Characterization of a Laser Dye in a Solid State Host," Journal of Applied Physics, Vol. 89, 7739-7744 (2001).
    DOI:10.1063/1.1371949
  150. Sardar, D.K. and Yow, R.M., and Salinas, F.S., "Stark Components of Lower-lying manifolds and Phonon Effects on Sharp Spectral Lines for Inter-Stark Transitions of Nd3+ in LLGG Crystal Host," Journal of Optical Materials, Vol. 18, 301-308 (2001).
    DOI:10.1016/S0925-3467(01)00118-5
  151. Gruber, J.B., Sardar, D.K., Merkle, L.D., Zandi, B., Jarman, R., and Hutchinson, J.A., "Spectroscopic Properites of CaF2:U4+ as a Saturable Absorber,"” Journal of Applied Physics, Vol. 90, 3965-3972 (2001).
    DOI:10.1063/1.1396833
  152. Sardar, D.K., Castano, F., French, J.A., Gruber, J.B., Reynolds, T.A., Alekel, T., Keszler, D.A., and Clark, B.L., "Spectroscopic and Laser Properites of Nd3+ in LaSc3(BO3)4 Host," Journal of Applied Physics, Vol. 90, 4997-5001 (2001).
    DOI:10.1063/1.1408588
  153. Sardar, D.K., Castano, F., French, J.A., and Salinas, F.S., "Spectroscopic and Laser Properites of Nd3+ in LaSc3(BO3)4 (LSB)," Proceedings of the International Conference on LASERS 2001, 55-58 (2001).
    PDF
  154. Sardar, D.K., French, J.A., Castano, F., and Salinas, F.S., "Effects of Temperature on Sharp Spectral Lines of Nd3+ in LaSc3(BO3)4," Proceedings of the International Conference on LASERS 2001, 59-64 (2001).
    PDF
  155. 2000
  156. Glickman, R.D., Gallas, J.M., Jacques, S.L., Rockwell, B.A., and Sardar, D.K., "Physical and Photochemical Properites of Ocular Melanin," Proceedings of SPIE – The International Society of Optical Engineering, Valery V. Tuchin, Ed., Vol. 4241, 112-126 (2001).
    DOI:10.1117/12.431511
  157. Sardar, D.K. and Yow, R.M., "Stark Components of 4F3/2, 4I9/2, and 4I11/2 Manifold Energy Levels and Effects of Temperature on the Laser Transitions of Nd3+ in YVO4," Journal of Optical Materials, Vol. 14, 5-11 (2000).
    DOI:10.1016/S0925-3467(99)00109-3
  158. Sardar, D.K., Salinas, F.S., and Yow, R.M., "Stark Effects on the Spectrum of Trivalent Praseodymium Ions in Strontium Fluorapatite Laser Host," Journal of Applied Physics, Vol. 88, 4688-4692 (2000).
    DOI:10.1063/1.1310183
  159. 1999
  160. Sardar, D.K. and Yow, R.M., "Inter-Stark Energy levels and effects of temperature on sharp emission lines of Nd3+ in LiYF4," Physica Status Solidi (a), Vol. 173, 521-534 (1999).
    DOI:10.1002/(SICI)1521-396X(199906)173:2<521::AID-PSSA521>3.0.CO;2-1
  161. Sardar, D.K. and Stubblefield, S.C., "Phonon Effects on Sharp Spectral Lines for Inter-Stark Transitions of Trivalent Neodymium Ions in Strontium Fluorovanadate," Physical Review B, Vol. 60, 14724-14731 (1999).
    DOI:10.1103/PhysRevB.60.14724
  162. 1998
  163. Sardar, D.K. and Levy, L.B., "Optical Properites of Whole Blood," Lasers in Medical Sciences, Vol. 13, 106-111 (1998).
    DOI:10.1007/s101030050062
  164. Sardar, D.K. and Stubblefield, S.C., "Temperature Dependencies of Linewidths, Positions and Line Shifts of Spectral Transitions of Trivalent Neodymium Ions in Barium Magnesium Yttrium Germanate Laser Host," Journal of Applied Physics, Vol. 83, 1195-1199 (1998).
    DOI:10.1063/1.366815
  165. Sardar, D.K. and Yow, R.M., "Optical Characterization of inter-Stark Energy levels and effects of temperature on sharp emission lines of Nd3+ in CaZn2Y2Ge3O12," Journal of Optical Materials, Vol. 10, 191-199 (1998).
    DOI:10.1016/S0925-3467(97)00172-9
  166. 1997
  167. Sardar, D.K. and Bella, P.D., "Stark Components of Lower-lying Manifolds and Emission Cross Sections of Principal Intermanifold and Inter-Stark Transitions of Trivalent Neodymium in Strontium Fluorovanadate," Physical Review B, Vol. 55, 2859 (1997).
    DOI:10.1103/PhysRevB.55.2859
  168. Sardar, D.K. and Stubblefield, S.C., "Phonon Effects on Sharp Spectral Lines for Inter-Stark Transitions of Nd3+ in Sr5(VO4)3F (S-VAP)," Proceedings of the International Conference on LASERS '97, 256-261 (1997).
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  169. Sardar, D.K. and Yow, R.M., "Optical Characterization of Inter-Stark Energy Levels and Effects of Temperature on Sharp Emission Lines of Nd3+ in CaZ2Y2Ge3O12," Proceedings of the International Conference on LASERS '97, 522-528 (1997).
    PDF
  170. 1996
  171. Sardar, D.K. and Levy, L.B., "Comparative Evaluation of Absorption Coefficients of KCl:Eu2+ and CaF2:Eu2+ Using a Spectrophotometer and an Integrating Sphere," Journal of Applied Physics, Vol. 79, 1759 (1996).
    DOI:10.1063/1.360965
  172. Sardar, D.K. and Stubblefield, S.C., "Characterization of Stark Components and Peak Emission Cross Sections of Intermanifold and Inter-Stark Transitions of Nd3+ in Ba0.25Mg2.75Y2Ge3O12," Journal of Applied Physics, Vol. 80, 5275 (1996).
    DOI:10.1063/1.363514
  173. 1995
  174. Sardar, D.K. and Stubblefield, S.C., "Spectroscopic Characterization of Nd3+:BAMGAR Crystal," Physica Status Solidi (a), Vol.152, 549 (1995).
    DOI:10.1002/pssa.2211520223
  175. 1994
  176. Sardar, D.K., Vizcarra, S., Islam, M.A., Allik, T.H., Sharp, E.J., and Pinto, A.A., "Characterization of Spectroscopic Properites of Nd3+:CaZn2Y2Ge3O12 (CAZGAR)," Journal of Luminescence, Vol. 60 & 61, 97 (1994).
    DOI:10.1016/0022-2313(94)90103-1  |  PDF
  177. Vizcarra, S., Mohammad, M.A., Allik, T.H., Sharp, E.J., and Pinto, A.A., "Spectroscopic Analysis and the Effects of Color Centers on the Laser Performance of Nd3+:CaZn2Y2Ge3O12," Journal of Optical Materials, Vol. 3, 257 (1994).
    DOI:10.1016/0925-3467(94)90038-8
  178. Sardar, D.K. and Bella, P.D., "Optical Characterization of Nd3+:Sr5(VO4)3F," Journal of Applied Physics, Vol. 76, 5900 (1994).
    DOI:10.1063/1.358406
  179. 1993
  180. Sardar, D.K., Velarde-Montecinos, R.C., and Vizcarra, S., "Spectroscopic Properites of Nd3+ in CaF2," Physica Status Solidi (a), Vol. 136, 555 (1993).
    DOI:10.1002/pssa.2211360228
  181. Sardar, D.K., Zapata, B.M., and Howard, C., "Optical Absorption of Untreated and Laser-Irradiated Tissues," Lasers in Medical Sciences, Vol. 8, 205 (1993).
    DOI:10.1007/BF02547877
  182. 1992
  183. Sardar, D.K., "Electron Irradiation Damage in Pure and Impurity Doped RbMgF3 Crystals," Physica Status Solidi (b), Vol. 171, 39 (1992).
    DOI:10.1002/pssb.2221710105
  184. 1991
  185. Sardar, D.K., Nemati, B., and Barrera, F.J., "Use of Polarization to Separate On-axis scattered and Unscattered Light in Red Blood Cells," Biomedical Optics '91 of SPIE Technical Proceedings, Vol. 1427, 43 (1991).
    DOI:10.1117/12.44124
  186. 1989
  187. Burdick, G.W., Downer, M.C., and Sardar, D.K., "A New Contribution to Spin­Forbidden Rare Earth Optical Transition Intensities: Analysis of All Trivalent Lanthanides," Journal of Chemical Physics, Vol. 91, 1511 (1989).
    DOI:10.1063/1.457111
  188. 1988
  189. Downer, M.C., Burdick, G.W., and Sardar, D.K., "A New Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities: Gd3+ and Eu3+," Journal of Chemical Physics, Vol. 89, 1787 (1988).
    DOI:10.1063/1.455125
  190. Allik, T.H., Stewart, S.A., Sardar, D.K., Quarles, G.J., Powell, R.C., Kokta, M.R., Hovis, W.W., and Pinto, A.A., "Preparation, Structure and Spectroscopic Properites of Nd3+:{La1-XLuX}3[Lu1-YGaY]2Ga3O12 Crystals," Physical Review B, Vol. 37, 9129 (1988).
    DOI:10.1103/PhysRevB.37.9129
  191. Downer, M.C., Burdick, G.W., and Sardar, D.K., "A New Contribution to Spin-Forbidden Rare Earth Intensities," CLEO'88, Technical Digest Series, Vol. 7, 184 (1988).
  192. Burdick, G.W.; Downer, M.C.; and Sardar, D.K.; "The Role of Excited Configurations in Linear Rare Earth Optical Transition Intensities," Proceedings of the Symposium on Luminescence Science and Technology, 110-122 (1988).
  193. 1987
  194. Sardar, D.K., Becker, M.F., and Walser, R.M., "Multi-Pulse Laser Damage of GaAs Surfaces," Journal of Applied Physics, Vol.62, 3688 (1987).
    DOI:10.1063/1.339250
  195. Sardar, D.K., Baker, M.F., and Walser, R.M., "Auger Analysis of Elemental Depth Profiles Correlated with Multipulse Laser Damage of GaAs Surfaces," Optics in Adverse Environments-Technical Digest Series, Vol. 8, 52 (1987).
  196. 1986
  197. Sardar, D.K., Quarles, G.J., Powell, R.C., and Kokta, M.R., "Spectroscopic Properites of La2Lu2Ga3O12:Nd3+ Crystals," American Institute of Physics Conference Proceedings, Vol. 146, 214 (1986).
    DOI:10.1063/1.35856
  198. 1985
  199. Sardar, D.K. and Powell, R.C., "Time Resolved Site-Selection Spectroscopy of Nd3+ Ions in a Garnet Crystal," AIP Conference Proceedings, Vol. 146, 214 (1985).
  200. 1982
  201. Shinn, M.D., Windscheif, J.C., Sardar, D.K., and Sibley, W.A., "Optical Transitions of Er3+ Ions in RbMgF3 and RbMgF3:Mn," Physical Review B Vol.26, 2371 (1982).
    DOI:10.1103/PhysRevB.26.2371
  202. Sardar, D.K., Shinn, M.D., and Sibley, W.A., "Radiation Defect Perturbed Er3+ and Mn2+ Optical Transitions in RbMgF3," Physical Review B, Vol. 26, 2382 (1982).
    DOI:10.1103/PhysRevB.26.2382
  203. Alcala, R., Sardar, D. K., and Sibley, W.A., "Optical Transitions of RbMgF3:Eu2+ and RbMgF3:Mn2+, Eu2+," Journal of Luminescence, Vol. 27, 273 (1982).
  204. Sardar, D.K., Alcala, R., and Sibley, W.A., "Optical Absorption and Emission from Irradiated RbMgF3:Eu2+ and KMgF3:Eu2+," Journal of Luminescence, Vol. 27, 401 (1982).
    DOI:10.1016/0022-2313(82)90040-0  |  PDF
  205. 1981
  206. Sibley W.A., Sardar, D.K., and Alcala, R., "Optical Transitions of RbMgF3:Eu2+ and RbMgF3:Mn2+,Eu2+," AIP International Laser Conference Proceedings, Vol. 190, 758 (1981).
    PDF
  207. Sardar, D.K. and Powell, R.C., "Time-Resolved Site-Selection Spectroscopy Studies of NdAl3(BO3)4 Crystal," Journal of Luminescence, Vol. 22, 349 (1981).
    DOI:10.1016/0022-2313(81)90012-0  |  PDF
  208. 1980
  209. Sardar, D.K. and Powell, R.C., "Energy Transfer Processes in YVO4:Nd3+," Journal of Applied Physics, 51, 2829 (1980).
    DOI:10.1063/1.327950
  210. Powell, R.C., Neikerk, D.P., and Sardar, D.K., "Radiationless Decay Processes of Nd3+ Ions in Solids," Journal of Optical Society of America, 70, 486-490 (1980).
    DOI:10.1364/JOSA.70.000486

 

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