UTSA Nanophotonics and Laser Materials Research Laboratory

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UTSA Biophotonics Research and Imaging Laboratory

 

Presentations


2019
  • Sanchez, D., Rightsell, C., Kumar, A., Sardar, D., "Structural Characterization of Er:YAG Nanocrystals," University of Maryland National Conference for McNair Scholars, College Park, Maryland, March 15, 2019.
2018
  • E. Ortega, D. Sanchez, D. Sardar, J. Arellano, and A. Ponce, "Microstructural Analysis of Polycrystalline Er:YAG Using Automated Crystal Orientation Mapping," Microscopy and Microanalysis, Baltimore, Maryland, August 5, 2018. (second prize: Student Poster in Analytical Sciences)
  • D. Sanchez, E. Ortega, D. Sardar, and A. Ponce, "Microstructural Analysis of Er:YAG Polycrystalline Ceramic Using Crystal Orientation Mapping," Texas Society for Microscopy, Denton, Texas, February 23, 2018.
2015
  • C. Rightsell, L.C. Mimun, G.A. Kumar, and D.K. Sardar, "MPO4:Nd3+ (M = Ca, Gd), Luminomagnetic Nanophosphors with Optical and Magnetic Features for Multimodal Imaging Applications," APS March Meeting 2015, San Antonio, Texas, March 2015.
  • F.J. Pedraza, B.G. Yust, J. Avalos, A. Tsin, and D.K. Sardar, "Cell Interaction Effects due to Surface Coatings on Highly Fluorescent Nanoparticles," Texas Academy of Science 2015, San Antonio, Texas, March 7, 2015.
  • Julio Avalos, C. Mimun, G.A. Kumar, and D.K. Sardar, "Intracellular Imaging Applications of Rare Earth doped Multifunctional Metal Oxysulphide Nanomaterials," The American Physical Society Meeting, San Antonio, Texas, March 2-6, 2015.
  • Nicolas Balli, Chris Mimum, Fancisco Pedraza, and D.K. Sardar, "Synthesis and Characterization of Down-Converting Ca8(PO4)6:Nd3+ Nanocrystals for Biomedical Imaging Applications," The American Physical Society Meeting, San Antonio, Texas, March 2-6, 2015.
  • Ivan Beeks, Ajith Kumar Gangadharan, and D.K. Sardar, "Measurement of Quantum Yield and Upconversion Brightness in Red, Blue and Green on NIR Excited M2O2S:Yb/Er/Tm/Ho Phosphors," The American Physical Society Meeting, San Antonio, Texas, March 2-6, 2015.
  • L. Chris Mimun, Chris Rightsell, G.A. Kumar, Francisco Pedraza, Sergio A. Montelongo, Teja Guda, Vinayak P. Dravid, and Dhiraj K Sardar, "Development of Multifunctional Luminomagnetic Nanoparticles as Bioimaging Contrast Agents," The American Physical Society Meeting, San Antonio, Texas, March 2-6, 2015.
  • Francisco J. Pedraza, G.A. Kumar, Lawrence C. Mimun, Jing Yong Ye, and Dhiraj K. Sardar, "Application of Near Infrared Sensitive Multifunctional Nanophosphors in Optical and Photoacoustic Imaging," The American Physical Society Meeting, San Antonio, Texas, March 2-6, 2015.
  • F.J. Pedraza, B. Yust, J. Avalos, A. Tsin, and D. Sardar, "Effects of Nanoparticle Surface Chemistry on Optical Properties and Cellular Interaction," SPIE West BiOS, San Francisco, California, February 9, 2015.
  • Francisco J. Pedraza, Julio C. Avalos, Lawrence C. Mimun, Brian G. Yust, Andrew Tsin, and Dhiraj K. Sardar, "Effects of Surface Chemistry on the Optical Properties and Cellular Interaction of Lanthanide-Based Nanoparticles," SPIE Photonics West - BiOS, San Francisco, California, February 6-12, 2015.
2014
  • L. Chris Mimun, Chris Rightsell, Madhab Pokhrel, G.A. Kumar, Brian Yust, Ashish Dhanale, Liang Tang, and Dhiraj K Sardar, "MGdLuF3:Nd3+ (M=K,Na) Nanoparticles for Tri-Modal Medical Imaging," SPIE Photonics West - BiOS, San Francisco, California, February 4, 2014.
  • F. Pedraza, B. Yust, A. Tsin, D. Sardar, "NIR to NIR Upconversion in KYb2F7: RE3+ (RE=Tm,Er) Nanoparticles for Biological Imaging," SPIE Photonics West - BiOS, San Francisco, California, February 4, 2014.
  • B.G. Yust, F. Pedraza, and D.K. Sardar, "Ultrasmall Lanthanide-Doped Nanoparticles as Multimodal Platforms," SPIE Photonics West - BiOS, San Francisco, California, February 4, 2014.
2013
  • Ajith Gangadharan, Madhab Pokhrel, Mikhail Brik, Dhiraj Sardar, and Chong Ma, "Combined Crystal Field and First Principles Studies of the Y2O2S Phosphor Doped With Yb3+ and Er3+," The 224th ECS Meeting, San Francisco, California, October 27 - November 1, 2013.
  • M. Pokhrel, G.A. Kumar, and D.K. Sardar, "Plasmon Enhanced Upconversion in Yb3+/Er3+ Doped Y2O3 and NaYF4 Nanocrystalline Hosts." The SPIE International Symposium BIOS 2013, San Francisco, California, February 2-7, 2013.
  • M. Pokhrel, G.A. Kumar, and D.K. Sardar, "Theoretical and Experimental Analyses of Energy Transfer Mechanisms between Er3+ and Yb3+ Doped in La2O2S," The SPIE International Symposium BIOS 2013, San Francisco, California, February 2-7, 2013.
  • B.G. Yust, D.K. Sardar, L. C. Mimun, A. K. Gangadharan, and A. Tsin, "Rare Earth Doped Nanoparticles in Imaging and PDT," The SPIE International Symposium BIOS 2013, San Francisco, California, February 2-7, 2013.
2012
  • G.A. Kumar, M. Pokhrel, and D.K. Sardar, "Infrared Excited YbEr: Y2O2S: Phosphors with Intense Emission for Lighting Applications," The SPIE International Symposium BIOS 2012, San Francisco, California, January 21-26, 2012.
  • M. Pokhrel, G.A. Kumar, and D.K. Sardar, "Energy Converting Material for Solar Cell Application," The SPIE International Symposium BIOS 2012, San Francisco, California, January 21-26, 2012.
  • B.G. Yust, L.C. Mimun, D.K. Sardar, G.A. Kumar, P.J. Hornsby, and J. Rocha, "Highly Efficient Phosphors in Cancer Sensing and PDT," The SPIE International Symposium BIOS 2012, San Francisco, California, January 21-26, 2012.
  • B.G. Yust, N. Razavi, F. Pedraza, and D.K. Sardar, "Utilizing Nonlinear Optical Properties of Nanoparticles for Imaging and Sensing," The SPIE International Symposium BIOS 2012, San Francisco, California, January 21-26, 2012.
2011
  • Gary W. Burdick, John B. Gruber, Kelly L. Nash, and Dhiraj K. Sardar, "Comparative Crystal-Field Analyses of Lanthanide Ions in Garnet Systems," The International Conference on Luminescence 2011; June 27 - July 1, 2011.
  • B.G. Yust, D.K. Sardar, and A.T. Tsin, "Phase Conjugating Nanomirrors: Utilizing Optical Phase Conjugation for Imaging," The SPIE International Symposium BIOS 2011, San Francisco, California, January 22-27, 2011.
2010
  • John B. Gruber, Uygun Valiev, Gary Burdick, Sharof Rakhimov, Dhiraj Sardar, and Madhab Pokhrel, "Spectra, Energy Levels, and Symmetry Assignments for Stark Components of Eu3+(4f6) in Gadolinium Gallium Garnet (Gd3Ga5O12)," 2010 Uzbekistan-Korea, the 9th Joint Uzbek-Korea Symposium, Uzbekistan Academy of Sciences, November 2-5, 2010.
  • F. Barrera, E. Ahmed, P.Nash, and D.Sardar, "Modeling Laser-Tissue Interactions: Implementing the Heat Diffusion Equation and Wave Equation to Simulate Thermal Interaction of Lasers with Biological Tissues," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • R. Dennis, K. Nash, M. Zhang, W. Gorski, and D. Sardar, "Internal and External Radiative Decay Engineering of Rare Earth Doped Nanocrystalline Sesquioxides," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • E. Khachatryan, E. Enriquez, F. Pedreaza, C. Chen, and D. Sardar, "Investigation of Eu Doped TiO2 Thin Films," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • L. Mimun, B. Yurst, K. Nash, and D.Sardar, "Near Infrared Optical Properties of Whole Human Blood and Blood Containing Nanoparticles," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • F. Pedraza, E. Khachatryan, R. Dennis, K. Nash, and D. Sardar, "Temperature Dependencies of Linewidths, Positions, and Line Shifts of Spectral Transitions of Trivalent Neodymium Ions in Ceramic Nd3+: Y2O3," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • M. Pokhrel, D.Radhaballabh, and D. Sardar, "Down and Up-Conversion Emissions from Er3+/Yb3+ Co-doped Tellurite Glass for Solar Cell Application," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • K. Ramsey, R. Dennis, J. Yang, K. Nash, M. Zhang, and D.Sardar, "Synthesis of Fluorescent Nanocrystalline Geometrically Frustrated Nd3+:BaGd2O4," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • N. Ray, R. Dennis, J. Yang, K. Nash, W.Gorski, M. Zhang, and D. Sardar, "Fluorescence Enhancement through Energy Transfer to Plasmonic Nanoparticles," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • J. Salas, R. Dennis, K. Nash, and D. Sardar, "Comparative Study of Nd3+ in Various Nanocrystalline Sesquioxide Host (Nd3+:RE2O3 Where RE = Y, Gd, La, Yb, and Sc)," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • J. Yang and D. Sardar, "Shape-controllable synthesis of gold nanostructure and their application in surface-enhanced Raman scattering (SERS)," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • Z. Yasmin, R. Dennis, D. Sardar, Ma. Zhang, W. Gorski, and K. Nash, "Characterization of Rare Earth Oxide Composites Synthesized by Control of Surface Composition," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • B. Yurst, N. Razavi, and D. Sardar, "Barium Titanate Nanoparticles: Using Nonlinearity for Biomarkers and Phase Conjugate Nano-mirrors," The 2010 Fall Meeting of the Texas Section of the APS, AAPT, and SPS, The University of Texas at San Antonio, San Antonio, Texas, October 21-23, 2010.
  • D. Sardar, "Synthesis, Characterization, and Modeling of Rare-Earth Nanocrystals in Polymeric Plastic Hosts," Earth & Space 2010, Honolulu, Hawaii, March 14-17, 2010.
2009
  • R. Dennis, K. Nash, D. Sardar, and J. Gruber, "Intensity Analysis and Energy-Level Modeling of Nd3+ in Nd3+:Y2O3 Nanocrystals in Polymeric Hosts," The 2009 Spring Meeting of the Texas Section of the APS, AAPT, and SPS, Tarleton State University, Stephenville, Texas, April 2-4, 2009.
  • N.J. Ray, K.L. Nash, R.C. Dennis, J.B. Gruber, and D.K. Sardar, "Spectroscopic Analysis of Nd3+:Y2O3 Nanocrystals in Polymers and Copolymers," The 2009 Spring Meeting of the Texas Section of the APS, AAPT, and SPS, Tarleton State University, Stephenville, Texas, April 2-4, 2009.
  • B. Yust, I. Obregon, and D. Sardar, "Addition of Adapted Optics Towards Obtaining a Quantitative Measure of Diabetic Retinopathy," The 2009 Spring Meeting of the Texas Section of the APS, AAPT, and SPS, Tarleton State University, Stephenville, Texas, April 2-4, 2009.
  • B. Yust, F. Barrera, L. Mimun, A. Tsin, and D. Sardar, "Comparison of Optical Characteristics of Cultured and Excised Tissues as Single- and Multi-Layered Structures," The 2009 Spring Meeting of the Texas Section of the APS, AAPT, and SPS, Tarleton State University, Stephenville, Texas, April 2-4, 2009.
2008
  • S. Chandra, J.B. Gruber, and D.K. Sardar, "Methodology of Synthesis and Optical Analysis of Rare-Earth Ions in the Polymeric Host PMMA," The Fall 2008 Joint Meeting of Texas Section of the APS, AAPT, and SPS, University of Texas at El Paso, El Paso, Texas, October 17-18, 2008.
  • S. Chandra, J.B. Gruber, and D.K. Sardar, "Fabrication and Optical Intensity Analysis of Nd3+:Y2O3 Nanoparticles Embedded in PMMA," The Fall 2008 Joint Meeting of Texas Section of the APS, AAPT, and SPS, University of Texas at El Paso, El Paso, Texas, October 17-18, 2008.
  • G.W. Burdick, J.B. Gruber, K.L. Nash, S. Chandrasekharan, and D.K. Sardar, "Electric-Dipole 4f11-4f11 Transition Intensities Measured and Calculated Between Stark Components in Er3+:Y3Al5O12," The Rare Earth Conference, Alabama, August, 2008.
  • Frederick J. Barrera, Christopher Maiman, Dhiraj K. Sardar, and Andrew T. Tsin, "Optical Characterization of Biological Tissues," Third San Antonio Biophotonics Symposium, University of Texas at San Antonio, San Antonio, Texas, March 28-29, 2008.
  • Douglas M. Dee, Kelly L. Nash, John B. Gruber, and Dhiraj K. Sardar, "Comparative Study of Absorption Intensities of Ho3+:Y2O3 Nanocrystals for Photonic and Biomedical Applications," Third San Antonio Biophotonics Symposium, University of Texas at San Antonio, San Antonio, Texas, March 28-29, 2008.
  • Robert C. Dennis, Kelly L. Nash, John B. Gruber, and Dhiraj K. Sardar, "Spectroscopic Analysis of Nd3+:Y2O3 Nanocrystals for Photonic and Biomedical Applications," Third San Antonio Biophotonics Symposium, University of Texas at San Antonio, San Antonio, Texas, March 28-29, 2008.
  • K.L. Nash, S. Chandrasekharan, J.B. Gruber, and D.K. Sardar, "Nanocrystalline Rare-Earth Oxides for Use as a Novel Bioluminescent Probe," Third San Antonio Biophotonics Symposium, University of Texas at San Antonio, San Antonio, Texas, March 28-29, 2008.
  • Frederick J. Barrera, Dhiraj K. Sardar, and Andrew T. Tsin, "Optical Characterization of Biological Tissues," The American Physical Society Meeting, New Orleans, Louisiana, March 10-14, 2008.
  • K.L. Nash, J.B. Gruber, D.K. Sardar, U.V. Valiev, N. Ter-Gabrielyan, L.D. Merkle, and A. Michael, "Spectral Intensities of Transitions Between Stark Levels of Er3+(4f11) in Single Crystal, Ceramic, and Nanocrystalline Y2O3," The American Physical Society Meeting, New Orleans, Louisiana, March 10-14, 2008.
  • K.L. Nash, J.B. Gruber, D.K. Sardar, U.V. Valiev, A.A. Uzokov, and G.W. Burdick, "Spectral Intensities of Transitions between Stark Levels of Er3+(4f11) in Single Crystal, Ceramic, and Nanocrystalline Y2O3," The American Physical Society Meeting, New Orleans, Louisiana, March 10-14, 2008.
  • Sree Ranjini, K.L. Nash, J.B. Gruber, and D.K. Sardar, "Judd-Ofelt Analysis and Crystal-Field Modeling of Er3+ Transitions in YAlO3," The American Physical Society Meeting, New Orleans, Louisiana, March 10-14, 2008.
  • K.L. Nash, J.B. Gruber, and D.K. Sardar, "Nanocrystalline Rare Earth Oxides for Use as a Novel Bioluminescent Probe," The SPIE International Symposium BIOS 2008, San Jose, California, January 19-24, 2008.
  • K.L. Nash, J.B. Gruber, D.K. Sardar, and P. Hornsby, "Vibronic-Tuning Divalent Cobalt-Doped Magnesium Spinels as a Satuarble Absorber for Eye-Safe Laser," The SPIE International Symposium LASE 2008, San Jose, California, January 19-24, 2008.
2007
  • U.V. Valiev, S.A. Rakhimov, A.A. Uzokov, J.B. Gruber, D.K. Sardar, and G.W. Burdick, "Optical and Magnetooptical Researches of the Symmetry of Electronic States in TbAlO3," Khorezm Mamun Academy of Sciences, Khiva, Uzbekistan, September 2-7, 2007. (organized in association with the Uzbek Academy of Sciences and the Quantum Matter Group, University of Cambridge, United Kingdom)
  • D.K. Sardar, "Synthesis and Spectral Analysis of Nanocrystals of Er3+:Y2O3," XVI International Materials Research Congress Symposium, Cancun, Mexico, August 19-23, 2007. (Invited Talk)
  • J.B. Gruber, D.K. Sardar, U.V. Valiev, and G.W. Burdick, "High Resolution Optical Studies and Stark Levels of Tb3+ (4f8) in TbAlO3," DPC07, Segovia, Spain, June 2007.
  • K.L. Nash, R.M. Yow, J.B. Gruber, A.S. Nijjar, B. Zandi, M.R. Kokta, and D.K. Sardar, "Co2+:GSGG as a Saturable Absorber for Resonantly Laser Pumped 1.6 µm Er:YAG Laser," Conference on Lasers & Electro-Optics (CLEO), Baltimore, Maryland, May 6-11, 2007.
  • K.L. Nash, R.M. Yow, J.B. Gruber, and D.K. Sardar, "Synthesis, Morphology, and Optical Characterization of Rare-Earth Nanocrystals," The Best Little Nano Conference in Texas, Austin, TX, April 2007.
  • K.L. Nash, R.M. Yow, D.M. Dee, G. Swanland, D.K. Sardar, M. Zhang, and W. Gorski, "Optical Characterization of Gold and Erbium Oxide Nanoparticles for Biosensor Applications," The SPIE International Symposium BiOS 2007, Biomedical Optics, San Jose, California, January 20-25, 2007.
  • K.L. Nash, J.B. Gruber, R.M. Yow, U.V. Valiev, and D.K. Sardar, "Modeling Visible and Infrared Stimulated Emission from Tb3+ in TbAlO3," The SPIE International Symposium, San Jose, California, January 20-25, 2007.
  • B. Zandi, K.L. Nash, J.B. Gruber, R.M. Yow, and D.K. Sardar, "Optimization of Q-Switch Performance of Co2+ by Crystal-Field Tuning of the Stark Levels in the Absorber Host Crystal for the Resonantly Pumped Er:YAG Laser (1.6 um)," The SPIE International Symposium, San Jose, California, January 20-25, 2007.
2006
  • U.V. Valiev, J. B.Gruber, B. Zandi, K.Mukhamadiev, V. Yu.Sokolov, and D.K. Sardar, "Zeeman Effects and Features of Stark Splitting of the Electronic States of Tb3+(4f8) Ion in Terbium Paramagnetic Garnet Tb3Ga5O12," The 2nd International Joint Symposium between National University of Uzbekistan & Chungnan National University, South Korea, November 17-19, 2006.
  • K.L. Nash, D. Dee, R.M. Yow, J.B. Gruber, D.K. Sardar, W. Gorski, and M.G. Zhang, "Optical Properties of Er3+:Y2O3 Nanoparticles for Biosensor Applications," The Fall 2006 Joint Meeting of Texas Section of the APS, AAPT, and SPS, University of Texas at Arlington, October 5-7, 2006.
  • E.P. Kokanian, I. Cristiani, V. Degiorgio, Z.K. Akopyan, G.G. Demirkhanyan, J.B. Gruber, and D. Sardar, "Halfnium Doped Single-Domain and Periodically Poled Lithium Niobate Crystals: Photorefractive and Compositional Properties," Optics in the Southeast, Charlotte, North Carolina, September 6-8, 2006.
  • T.T. Jobe, R.M. Yow, D.K. Sardar, and R.J. Thomas, "Finite-Difference Beam Propagation Modeling for Lasers in Ocular Tissues," The Texas Sections of the APS/AAPT/SPS Joint Spring Meeting, Angelo State University, San Angelo, Texas, March 23-25, 2006.
  • K.L. Nash, R.M. Yow, J.B. Gruber, D.K. Sardar, U.V. Valiev, and E.P. Kokanyan, "Judd-Ofelt Intensity Analysis of Tb3+ in TbAlO3," The Texas Section of the APS/AAPT/SPS Joint Spring Meeting, Angelo State University, San Angelo, Texas, March 23-25, 2006.
  • D.K. Sardar, R.L. Yow, and A.T. Tsin, "Near Infrared Characterization of Optical Properties of Human Ocular Tissues," The SPIE International Symposium BiOS 2006, Biomedical Optics, San Jose, California, January 24-29, 2006.
  • G-Y. Swanland, R.M. Yow, D.K. Sardar, A.T. Tsin, and R.J. Thomas, "Optical Properties of Bovine Ocular Tissues in the Near Infrared Region," The Texas Section of the APS/AAPT/SPS Joint Spring Meeting, Angelo State University, San Angelo, Texas, March 23-25, 2006.
2005
  • C.H. Coeckelenbergh, G-Y Swanland, R.M. Yow, and D.K. Sardar, "Characterization of Optical Properties of Human Ocular Tissues," The Joint Fall Meeting of the Texas Section of AAPT, APS, and SPS, University of Houston, Houston, Texas, October 7-9, 2005.
  • G-Y. Swanland, R.M. Yow, and D.K. Sardar, "Optical Properties of Bovine Ocular Tissues in the NIR," The Joint Fall Meeting of The Texas Section of AAPT, APS, and SPS, University of Houston, Houston, Texas, October 7-9, 2005.
  • J. Dickerson and D.K. Sardar, "Measurement of Index of Refraction Using Low-Coherence Interferometry," The Joint Spring Meeting of The Texas Section of AAPT, APS, and SPS, Stephen F. Austin University, Nacogdoches, Texas, March 3-5, 2005.
  • D.K. Sardar, R.L. Yow, and A.T. Tsin, "Polarization Characterization of Neovascularized Ocular (Retinal) Tissues," The Biophysical Society 49th Annual Meeting, Long Beach, California, February 12-16, 2005.
  • G-Y. Swanland, R.M.Y,J. Dickerson, and D.K. Sardar,"The Power of Inverse Adding Doubling (IAD) Method to Determine Optical Scattering and Absorption of Biological Media," The Joint Spring Meeting of The Texas Section of AAPT, APS, and SPS, Stephen F. Austin University, Nacogdoches, Texas, March 3-5, 2005.
2004
  • Cody H. Coeckelenbergh, Raylon M. Yow, Charles C. Russell III, and Dhiraj K. Sardar, "Spectroscopic Analysis of the Er3+ (4f11) Absorption Intensities in Calcium Fluorophosphate," The Joint Fall Meeting of The Texas Section of AAPT, APS, and SPS, Baylor University, Waco, Texas, October 7-9, 2004.
  • F.S. Salinas, D.K. Sardar, and A.T. Tsin, "Optical Characterization of Neo-Vascularized Ocular Tissues," The SPIE International Symposium BiOS 2003, Biomedical Optics, San Jose, California, January 24-29, 2004.
  • D.K. Sardar, J.B. Gruber, and B. Zandi, "Optical Characterization and Laser Properties of Er3+ (4f11) in NaBi(WO4)2," The SPIE International Symposium BiOS 2003, Biomedical Optics, San Jose, California, January 24-29, 2004.
  • R.L. Yow, D.K. Sardar, and A.T. Tsin, "Polarimetric Imaging of Neo-Vascularized Tissues," The SPIE International Symposium BiOS 2003, Biomedical Optics, San Jose, California, January 24-29, 2004.
2003
  • D.K. Sardar, W.M. Bradley, and R.M. Yow, "Optical Transitions and Absorption Intensities of Dy3+ (4f9) in YSGG Laser Host," The 2003 Frontiers in Optics/Laser Science Conference, Tucson, Arizona, October 5-9, 2003.
  • D.K. Sardar, "Judd-Ofelt Analysis of the Er3+ (4f11) Absorption Intensities in Er3+-Doped Garnets," The American Physical Society Meeting, Austin, Texas, March 3-7, 2003. (Invited Talk)
  • D.K. Sardar, A.T. Tsin, Felipe S. Salinas, and John J. Perez, "Optical Polarimetry of Neo-Vascularized Ocular Tissues," The SPIE International Symposium BiOS 2003, Biomedical Optics, San Jose, California, January 25-31, 2003.
2002
  • B. Zandi, M. Dubiniskiy, L. Merkle, J.B. Gruber, D.K. Sardar, and E.P. Kokanyan, "Novel Candidate HEL Material Yb:NaBi(WO4)2," Fifth Annual Directed Energy Symposium, Monterey, CA, November 12-15, 2002
  • R.D. Glickman, D.K. Sardar, F.S. Salinas, M.C. Hobbs, "Optical and Electrical Characterization of Natural Melanin," 2nd Joint Conference of the IEEE Engineering in Medicine and Biology Society and the Biomedical Engineering Society, Houston, Texas, October 23-26, 2002.
  • B. Zandi, J.B. Gruber, D.K. Sardar, J.A. Hutchinson, and C.W. Trussell, "Modeling the Optical Structure of Er:Yb:Phisphate-Glass Spectra," 2002 OSA Annual Meeting and Exhibit/Laser Science - XVIII, Orlando, Florida, September 29-October 3, 2002.
2001
  • D.K. Sardar, F. Castano, J.A. French, and F.S. Salinas, "Characterization of Spectroscopic Properties of Nd3+ in LaSc3(BO3)4 (LSB)," International Conference on LASERS 2001, Tucson, Arizona, December 3-7, 2001.
  • D.K. Sardar, J.A. French, F. Castano, and F.S. Salinas, "Effects of Temperature on Sharp Lines of Nd3+ in LaSc3(BO3)4," International Conference on LASERS 2001, Tucson, Arizona, December 3-7, 2001.
  • F. Castano and D.K. Sardar, "Characterization of Spectroscopic and Laser Properties of Pr3+ in SFAP Host," The Joint Fall Meeting of The Texas Section of AAPT, APS, and SPS, Texas Christian University, Fort Worth, Texas, October 4-6, 2001.
  • F.S. Salinas and D.K. Sardar, "Optical Properties of Natural Melanin," The Joint Fall Meeting of The Texas Section of AAPT, APS, and SPS, Texas Christian University, Fort Worth, Texas, October 4-6, 2001.
  • D.K. Sardar, R.M. Yow, A. Sayka, and M.L. Mayo, "Optical Characterization of Positive Photoresist," The APS March 2001 Meeting of the American Physical Society, Seattle, Washington, March 12-16, 2001.
  • D.J. Wildberger, G.M. Pocock, and D.K. Sardar, "Optical Characterization of a Leak-Detection Dye,"” The Joint Spring Meeting of The Texas Section of AAPT, APS and SPS, Sam Houston University, Huntsville, Texas, March 2-3, 2001.
  • F.S. Salinas, M.C. Hobbs, and D.K. Sardar, "Optical Characterization of C28H20N2O2B2F4H2O in a Solid State Host,"” The Joint Spring Meeting of The Texas Section of AAPT, APS and SPS, Sam Houston University, Huntsville, Texas, March 2-3, 2001.
2000
  • R.K. Knight, M.L Mayo and D.K. Sardar, "Optical Characterization of C28H20N2O2B2F4H2O in a Solid State Host," The Joint Fall Meeting of The Texas Section of AAPT, APS and SPS, Rice University, Houston, Texas, October 27-29, 2000.
  • F.S. Salinas, M.L Mayo, and D.K. Sardar, "Optical Characterization of Melanin," The Joint Fall Meeting of The Texas Section of AAPT, APS and SPS, Rice University, Houston, Texas, October 27-29, 2000.
  • T.B. Sweet and D.K. Sardar, "Theoretical and Experimental Considerations on the Efficiency and Thermal Susceptibility of the Standard Nd3+:YVO4," The Joint Fall Meeting of The Texas Section of AAPT, APS and SPS, Rice University, Houston, Texas, October 27-29, 2000.
  • R.D. Glickman, J.M. Gallas, S.L. Jacques, B.A. Rockwell, and D.K. Sardar, "Physical and Hotochemical Properties of Ocular Melanin," Optical Technologies in Biophysics and Medicine II, Saratov Fall Meeting, Saratov, Russia, October 3-6, 2000.
1999
  • D.K. Sardar and R.M. Yow, "Investigation of Stark Energy Levels of 4I9/2 and 4I11/2 Manifolds and Effects of Temperature on a Sharp Emission Line Nd3+ in YVO4," The APS March 1999 Centennial Meeting of the American Physical Society, Atlanta, Georgia, March 22-26, 1999.
1998
  • T.B. Sweet and D.K. Sardar, "Investigation of Spectral and Optical Properties of Pyromethene BF2(C19H25N2F2B) Dye in Plastic Host," International Conference on LASERS '98, Tucson, Arizona, December 7-11, 1998.
  • R.M. Yow and D.K. Sardar, "Inter-Stark Energy Levels and Effects of Temperature on Sharp Emission Lines of Nd3+ in LiYF4 (YLF)," International Conference on LASERS '98, Tucson, Arizona, December 7-11, 1998.
  • R.M. Yow and D.K. Sardar, "Characterization of Stark Components of 4I9/2 and 4I11/2 Manifolds and Effects of Temperature of Sharp Emission Lines of Nd3+ in YVO4," The Joint Fall Meeting of The Texas Section of AAPT, APS and SPS, University of Texas at El Paso, El Paso, Texas, October 15-17, 1998.
  • T.B. Sweet and D.K. Sardar, "Optical and Laser Characterization of a Pyrromethene-BF2 Dye in Plastic Host," The Joint Spring Meeting of The Texas Section of AAPT, APS and SPS, University of the Incarnate Word, San Antonio, Texas, March 19-21, 1998.
1997
  • D.K. Sardar and S.C. Stubblefield, "Phonon Effects on Sharp Lines of Trivalent Neodymium Ions in Sr5(VO4)3F (S-VAP)," International Conference on LASERS '97, New Orleans, Louisiana, December 15-19, 1997.
  • R.M. Yow and D.K. Sardar, "Characterization of Inter-Stark Energy Levels and Investigation of Temperature Dependencies of Line-Widths and Line Shifts of the Inter-Stark Transitions of Nd3+ in CAZGAR," International Conference on LASERS '97, New Orleans, Louisiana, December 15-19, 1997.
  • W.D. Wright, Chung-On Pong, S.C. Stubblefield, and D.K. Sardar, ""Optical Characterization of Synthetic Melanin in Acetate and Polycarbonate Plastic Hosts," The Joint Spring Meeting of The Texas Section of AAPT and APS, University of North Texas, Denton, Texas, March 9-11, 1997.
  • R.M. Yow and D.K. Sardar, "Optical Characterization of Inter-Stark Energy Levels and Effects of Temperature on Sharp Emission Lines of Nd3+ in CaZn2Y2Ge3O12," The Spring Fall Meeting of The Texas Section of AAPT and APS, University of North Texas, Denton, Texas, March 9-11, 1997.
  • R.M. Yow and D.K. Sardar, "Optical Characterization of Inter-Stark Energy Levels and Effects of Temperature on Sharp Emission Lines of Nd3+ in CaZn2Y2Ze3O12," The Joint Fall Meeting of The Texas Section of AAPT, APS and SPS, University of North Texas, Denton, Texas, October 9-11, 1997.
  • S.C. Stubblefield and D.K. Sardar, "Investigation of Line-Widths, Positions, and Line shifts of Sharp Optical Transitions in Nd3+-Doped BAMGAR Laser Hosts as a Function of Temperature," The American Physical Society Meeting, Kansas City, Missouri, March 17-21, 1997.
  • S.C. Stubblefield and D.K. Sardar, "Temperature Dependence of Spectral Line-widths and Line shifts of Nd3+ Ions in S-VAP Laser Crystal," The Joint Spring Meeting of The Texas Section of AAPT and APS, University of St. Thomas, Houston, Texas, March 13-15, 1997.
  • R. Yow and D.K. Sardar, "Characterization of Optical Emission and Energy Level Structure of Nd3+ 4F3/2, 4I11/2 and 4I9/2 Manifolds in BAMGAR Host Material," The Joint Spring Meeting of The Texas Section of AAPT and APS, University of St. Thomas, Houston, Texas, March 13-15, 1997.
1996
  • M.G. Kalifa and D.K. Sardar, "Spectroscopic Characterization of a Pyrromethene-BF2 Dye Doped in Plastic," The Joint Fall Meeting of The Texas Section of AAPT and APS, University of Texas at Arlington, Arlington, Texas, October 10-12, 1996.
  • S.C. Stubblefield and D.K. Sardar, "Optical Characterization of Melanin," The Joint Fall Meeting of The Texas Section of AAPT and APS, University of Texas at Arlington, Arlington, Texas, October 10-12, 1996.
  • S.C. Stubblefield and D.K. Sardar, "Optical Characterization of Natural Melanin," Second CERT Symposium on Environmental Radiation Toxicology, UT-Health Science Center at San Antonio, San Antonio, Texas, September 19-20, 1996.
  • S.C. Stubblefield and D.K. Sardar, "Energy-Level Structure of Nd3+ 4F3/2, 4I11/2 and 4I9/2 Manifolds in BAMGAR and Peak Emission Cross sections for Inter-Stark Transitions between theses Manifolds," The American Physical Society Meeting, St. Louis, Missouri, March 18-22, 1996.
  • T. David, Jr. and D.K. Sardar, "Optical Studies of C14H16N2O6, a Novel Dye Material, as a Possible Laser Dye," The Joint Spring Meeting of The Texas Section of AAPT and APS, Abilene Christian University, Abilene, Texas, March, 1996.
  • M.G. Kalifa and D.K. Sardar, "Characterization of Optical and Spectroscopic Properties of a Tunable, Solid-State Dye Laser: PM-567," The Joint Spring Meeting of The Texas Section of AAPT and APS, Abilene Christian University, Abilene, Texas, March, 1996.
  • A. Mitchell and D.K. Sardar, "Spectroscopic Properties of YAG: Cr3+, Tm3+, Ho3+," The Joint Spring Meeting of The Texas Section of AAPT and APS, Abilene Christian University, Abilene, Texas, March, 1996.
  • S.C. Stubblefield and D.K. Sardar, "Characterization of Optical Emission and Energy Level Structure of Nd3+ 4F3/2, 4I11/2 and 4I9/2 Manifolds in BAMGAR Host Material," The Joint Spring Meeting of The Texas Section of AAPT and APS, Abilene Christian University, Abilene, Texas, March, 1996.
1995
  • D.K. Sardar and S.C. Stubblefield, "Characterization of Optical and Laser Properties of Nd3+," The 1995 Optical Society of America Annual (OSA) Meeting / The 11th Interdisciplinary Laser Science Conference (ILS-XI), Oregon, Portland, September 10-15, 1995.
  • D.K. Sardar and L.B. Levy, Jr., "Optical Properties of Melanin," The American Physical Society Meeting, San Jose, California, March 19-24, 1995.
  • M.G. Kalifa and D.K. Sardar, "Optical Studies of Pyrromethene (PM-567) Doped Tunable Solid State Dye Laser," The Joint Spring Meeting of The Texas Section of AAPT and APS, Sam Houston State University, Huntsville, Texas, March, 1995.
  • S.C. Stubblefield and D.K. Sardar, "Spectroscopic Characterization of BAMGAR:Nd3+ (2 at. wt. %), a Potential Laser Material," The Joint Spring Meeting of The Texas Section of AAPT and APS, Sam Houston State University, Huntsville, Texas, March, 1995.
1994
  • D.K. Sardar and P. Bella, ""Characterization of Spectroscopic Properties of Nd:S-VAP," The 10th Interdisciplinary Laser Science Conference (ILS-X), Dallas, Texas, October 2-7, 1994.
  • P. Bella and D.K. Sardar, "Spectroscopic and Laser Properties of SrVO4:Nd3+," The Joint Spring Meeting of The Texas Section of AAPT and APS, The University of Texas at Dallas, Dallas, Texas, March, 1994.
  • L.B. Levy and D.K. Sardar, "Optical Properties of Melanin," The Joint Spring Meeting of The Texas Section of AAPT and APS, The University of Texas at Dallas, Dallas, Texas, March, 1994.
  • C.W. Shaw and D.K. Sardar, "Spectroscopic Properties and Energy Transfer Process in YVO4:Nd3+," The Joint Spring Meeting of The Texas Section of AAPT and APS, The University of Texas at Dallas, Dallas, Texas, March, 1994.
1993
  • D.K. Sardar, S. Vizcarra, M.A. Islam, T.H. Allik, E.J. Sharp, and A.A. Pinto, "Characterization of Spectroscopic Properties of Nd3+:CaZn2Y2Ge3O12," International Conference on Luminescence, University of Connecticut, Storrs, Connecticut, August, 1993.
  • M.A. Islam and D.K. Sardar, "In-Depth Study of Spectroscopic and Laser Properties of YVO4:Nd3+ (1.5 at. %)," The Joint Spring Meeting of The Texas Section of AAPT and APS, The University of Texas-Pan American, Edinburg, Texas, March, 1993.
  • L.B. Levy and D.K, Sardar, "Investigation of Optical Absorption of Solid-State Materials Using an Integrating Sphere," The Joint Spring Meeting of the Texas Section of AAPT and APS, The University of Texas-Pan American, Edinburg, Texas, March, 1993.
  • S. Vizcarra and D.K. Sardar, "Spectroscopic and Laser Properties of CaMgZnY2Ge3O12:Nd3+," The Joint Spring Meeting of The Texas Section of AAPT and APS, The University of Texas–Pan American, Edinburg, Texas, March, 1993.
1992
  • D.K. Sardar and S. Vizcarra, "The Spectroscopic Properties and Energy Transfer Characteristics of Eu2+ and Nd3+:CaF2 Hosts," International Conference on Lasers '92, Houston Texas, December, 1992.
  • D.K. Sardar and R.C. Velarde Montecinos, "The Spectroscopic Properties of Nd3+ in Fluorite Hosts and the Intensity Analysis of Laser Transitions," The Interdisciplinary Laser Science, OSA/ ILS '92 Conference, Albuquerque, New Mexico, September, 1992.
  • R.C. Velarde Montecinos and D.K. Sardar, "Spectroscopic Investigation of the Energy Transfer from Europium to Neodymium in Fluorite Crystal," Conference on Lasers and Electro-Optics (CLEO '92), Anaheim, California, May, 1992.
  • N. Nguyen and D.K. Sardar, "Temperature and Host Dependent Trivalent Neodymium Absorption Intensities in Crystalline Host Lattices," The Joint Spring Meeting of The Texas Section of AAPT and APS, Southwest Texas State University, San Marcos, Texas, March, 1992.
  • R.C. Velarde Montecinos and D.K. Sardar, "Experimental Characterization of Spectroscopic Properties of Nd3+ Ions in Crystalline Environment and the Judd Ofelt Intensity Analysis of Various Nd3+ 4f3 Transitions," The Joint Spring Meeting of the Texas Section of the AAPT and APS, Southwest Texas State University, San Marcos, Texas, March, 1992.
  • D.K. Sardar and R.C. Velarde-Montecinos, "The Spectroscopic Properties of Nd3+ in Fluorite Hosts and the Intensity Analysis of Laser Transitions," The American Physical Society Meeting, Indianapolis, Indiana, March, 1992.
1991
  • F.J. Barrera and D.K. Sardar, "Spectroscopic Properties of Eu2+ and Nd3+ Doped in CaF2 Single Crystal Hosts," The Joint Fall Meeting of The American Association of Physics Teachers and The American Physical Society, University of North Texas, Denton, Texas, November, 1991.
  • J.N. Sanders, M.A. Siddiqui, and D.K. Sardar, "Optical Properties of Various Ocular Tissues," The Joint Fall Meeting of The American Association of Physics Teachers and The American Physical Society, University of North Texas, Denton, Texas, November, 1991.
  • D.K. Sardar, J.N. Sanders, B. Nemati, and F.J. Barrera, "Separation of On-Axis Scattered and Unscattered Light in Turbid Media Using Polarization Technique," World Congress on Medical Physics and Biomedical Engineering, Kyoto, Japan, July, 1991.
  • D.K. Sardar, B. Nemati, and F.J. Barrera, "Use of Polarization to Separate On-Axis Scattered and Unscattered Light in Red Blood Cells," Biomedical Optics '91 Meeting, SPIE's OE LASE '91, Los Angeles, California, January, 1991.
1990
  • M.T. Jurena and D.K. Sardar, "Temperature and Host Dependencies of Divalent Europium Ions in Crystalline Environment," The Joint Fall Meeting of Texas Section of The American Association of Physics Teachers and The American Physical Society, Texas City, Texas, November, 1990.
  • B. Nemati, F.J. Barrera, and D.K. Sardar, "Application of Polarization Techniques to Separate Axial Scattered and Unscattered Light in Turbid Media," The Joint Fall Meeting of Texas Section of The American Association of Physics Teachers and The American Physical Society, Texas City, Texas, November, 1990.
  • D.K. Sardar, "Optical Absorption in Untreated and Laser Irradiated Tissues," The Sixth Interdisciplinary Laser Science Conference (ILS VI), Minneapolis, Minnesota, September 16-19, 1990.
  • D.K. De, and D.K. Sardar, "Super-Efficient Photoemission of Electrons from Semiconducting Surfaces Using Laser Pump and Probe Techniques," The American Physical Society Meeting, Anaheim, California, March, 1990.
1989
  • G.W. Burdick, M.C. Downer, and D.K. Sardar, "A New Contribution to Spin-Forbidden Lanthanide Rare Earth Optical Transition Intensities," Second International Symposium on Rare Earth Spectroscopy, Changchun, China, September, 1989. (Invited Talk)
  • G.W. Burdick, M.C. Downer, and D.K. Sardar, "A New Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities," The American Physical Society Meeting, St. Louis, Missouri, March, 1989.
  • D.K. De, K.W. Chen, and D.K. Sardar, "Avalanche Photoemission of Electrons from Semiconducting Surfaces Using a Pump and a Probe Lasers," The American Physical Society Meeting, St. Louis, Missouri March, 1989.
1988
  • M.C. Downer, G.W. Burdick, D.K. Sardar, "A New Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities," Symposium on Luminescence and Technology, Chicago, Illinois, October, 1988. (Invited Talk)
  • P.A. Patel, B.M. Zapata, and D.K. Sardar, "Optical Absorption Studies of Tissue" The World Congress on Medical Physics and Biomedical Engineering, San Antonio, Texas, August, 1988.
  • M.C. Downer, G.W. Burdick, and D.K. Sardar, "A New Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities," The Conference on Lasers and Electro-Optics : CLEO '88, Anaheim, California, April, 1988.
  • G.W. Burdick, M.C. Downer, and D.K. Sardar, "A New Third Order Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities," The Joint Fall Meeting of the Texas Section of the American Physical Society, Austin, Texas, March, 1988.
  • M.C. Downer, G.W. Burdick, and D.K. Sardar, "A New Third Order Contribution to Spin-Forbidden Rare Earth Optical Transition Intensities," The American Physical Society Meeting, New Orleans, Louisiana, March, 1988.
1987
  • B.M. Zapata and D.K. Sardar, "Optical Absorption of Rare Earth Ions in Crystals," The Joint Fall Meeting of The Texas Section of The American Physical Society, Texas A&I University, Kingsville, Texas, October, 1987.
  • D.K. Sardar, M.F. Becker, and R.M. Walser, "Auger Analysis of Elemental Depth Profiles Correlated with Multi-Pulse Laser Damage of GaAs Surfaces," The Southwest Optics '87 Conference, Albuquerque, New Mexico, February, 1987.
1985
  • D.K. Sardar, R.C. Powell, and M.R. Kokta, "Spectroscopic Properties of Nd3+-Doped La3Lu2Ga3O12," The international Laser Conference, Dallas, Texas, November, 1985.
1983
  • D.K. Sardar, W.A. Sibley, and M.D. Shinn, "Eu2+ Sensitized Mn2+ Luminescence in RbMgF3 Crystals," The American Physical Society Meeting, Los Angeles, California, March, 1983.
1982
  • D.K. Sardar, R. Alcala, and W.A. Sibley, "Optical Transitions in RbMgF3:Eu2+ and New Transitions from Irradiated Sample," The American Physical Society Meeting, Dallas, Texas, March, 1982.
1981
  • W.A. Sibley, D.K. Sardar, and R. Alcala, "Optical Transitions of RbMgF3:Eu2+ and RbMgF3:Mn2+,Eu2+," The International Conference on Lasers, New Orleans, Louisiana, November, 1981.
  • D.K. Sardar, M.D. Shinn, and W.A. Sibley, "Defects Interaction in Irradiated RbMgF3:Er3+:Mn2+," The American Physical Society Meeting, Phoenix, Arizona, March, 1981.
1980
  • D.K. Sardar and R.C. Powell, "Energy Transfer Processes in YVO4:Nd3+," The American Physical Society Meeting, New York City, New York, March, 1980.
1979
  • R.C. Powell, D.P. Neikerk, and D.K. Sardar, "Radiationless Decay Processes of Nd3+ Ions in Solids," The Topical Meeting on Photoacoustic Spectroscopy, Ames, Iowa, August, 1979.

 

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