Dr. Vijaysekhar Jayaraman Profile

Dr. Vijaysekhar Jayaraman

Founder/Chairman/Chief Technical Officer at Praevium Research Inc

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Author

Publications (21)

Proceedings Article | 13 March 2024 Presentation

Room-temperature, directly modulated DFB-QCLs and resonant-cavity infrared detectors (RCIDs) for 5 Gb/s OOK free-space, mid-wave infrared atmospheric laser communication

R. Marsland, M. Turville-Heitz, J.-H. Ryu, C. Canedy, I. Vurgaftman, V. Jayaraman, T. Earles, S. Ruder, B. Knipfer, J. Meyer, D. Botez, L. Mawst

Proceedings Volume 12877, 128770F (2024) https://doi.org/10.1117/12.3001038

KEYWORDS: Mid-IR, Modulation, Laser communications, Infrared detectors, Quantum cascade lasers, Atmospheric sensing, Long wavelength infrared, Tunable filters, Signal attenuation, Data transmission

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Proceedings Article | 13 March 2024 Presentation

High-speed and long-range wide-field OCT for in vivo 3D imaging of the oral cavity achieved by 600kHz swept laser

Yaping Shi, Nate Bramham, Christopher Burgner, Vijaysekhar Jayaraman, Peter Heim, Ruikang Wang

Proceedings Volume PC12830, PC128301R (2024) https://doi.org/10.1117/12.3005732

KEYWORDS: Optical coherence tomography, Laser dentistry, Stereoscopy, In vivo imaging, Biomedical applications, Visualization, Tissues, Ranging, Point spread functions, Laser frequency

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Proceedings Article | 8 March 2024 Presentation + Paper

High-sensitivity mid-wave resonant cavity infrared detectors

C. Kim, M. Kim, C. Canedy, E. Jackson, C. Ellis, R. Espinola, J. Nolde, E. Aifer, I. Vurgaftman, J. Meyer, V. Jayaraman, B. Kolasa, C. Burgner, B. Knipfer, R. Marsland

Proceedings Volume 12895, 128950C (2024) https://doi.org/10.1117/12.3003022

KEYWORDS: External quantum efficiency, Germanium, Reflectivity, Frequency response, Dark current, Quantum devices, Quantum cascade lasers, Sensors, Quantum processing, Mirrors

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Proceedings Article | 3 March 2020 Paper

Reliable widely tunable electrically pumped 1050nm MEMS-VCSELs with amplifier in single butterfly co-package

Christopher Burgner, John Carter, Alan Donaldson, Nate Bramham, Benjamin Potsaid, Oscar Carrasco-Zevallos, Siyu Chen, Eric Moult, James Fujimoto, Peter Heim, Vijaysekhar Jayaraman, Alex Cable

Proceedings Volume 11228, 1122809 (2020) https://doi.org/10.1117/12.2549050

KEYWORDS: Optical coherence tomography, Optical amplifiers, Mirrors, Microelectromechanical systems, Vertical cavity surface emitting lasers, Reliability, Optical isolators, Optical pumping, Dielectrics, Wavelength tuning

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Proceedings Article | 24 February 2020 Presentation + Paper

Widely tunable electrically pumped 1050nm MEMS-VCSELs for optical coherence tomography

V. Jayaraman, Christopher Burgner, John Carter, Iana Borova, Nate Bramham, Chad Lindblad, Anthony Cazabat

Proceedings Volume 11300, 113000S (2020) https://doi.org/10.1117/12.2543819

KEYWORDS: Mirrors, Optical coherence tomography, Optical pumping, Semiconductors, Vertical cavity surface emitting lasers, Gallium arsenide, Microelectromechanical systems, Eye, Optical resonators

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Proceedings Article | 24 February 2020 Presentation + Paper

Tunable room-temperature continuous-wave mid-infrared VCSELs

V. Jayaraman, B. Kolasa, C. Lindblad, A. Cazabat, C. Burgner, S. Segal, K. Lascola, F. Towner, F. Xie

Proceedings Volume 11300, 113000M (2020) https://doi.org/10.1117/12.2541514

KEYWORDS: Vertical cavity surface emitting lasers, Mirrors, Optical pumping, Mid-IR, Continuous wave operation, Quantum wells, Methane, Microelectromechanical systems

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Proceedings Article | 24 April 2018 Paper

Endoscopic optical coherence tomography and angiography for gastroenterology applications

Hsiang-Chieh Lee, Kaicheng Liang, Osman Ahsen, Zhao Wang, Marisa Figueiredo, Benjamin Potsaid, Vijaysekhar Jayaraman, Qin Huang, Hiroshi Mashimo, James Fujimoto

Proceedings Volume 10711, 107110A (2018) https://doi.org/10.1117/12.2323185

KEYWORDS: Optical coherence tomography, Endoscopy, Gastroenterology, Angiography, Imaging systems, Tissues, Visualization, Medical research, Medicine, In vivo imaging

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Proceedings Article | 19 February 2018 Paper

Room temperature continuous wave mid-infrared VCSEL operating at 3.35um

V. Jayaraman, S. Segal, K. Lascola, C. Burgner, F. Towner, A. Cazabat, G. D. Cole, D. Follman, P. Heu, C. Deutsch

Proceedings Volume 10552, 105520B (2018) https://doi.org/10.1117/12.2287913

KEYWORDS: Vertical cavity surface emitting lasers, Mirrors, Gallium arsenide, Optical pumping, Mid-IR, Quantum wells, Gallium antimonide, Continuous wave operation

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Proceedings Article | 4 March 2014 Paper

Recent advances in MEMS-VCSELs for high performance structural and functional SS-OCT imaging

V. Jayaraman, D. John, C. Burgner, M. Robertson, B. Potsaid, J. Jiang, T. Tsai, W. Choi, C. Lu, P. J. S. Heim, J. Fujimoto, A. Cable

Proceedings Volume 8934, 893402 (2014) https://doi.org/10.1117/12.2041718

KEYWORDS: Optical pumping, Vertical cavity surface emitting lasers, Microelectromechanical systems, Optical coherence tomography, Imaging systems, Mirrors, Coherence imaging, Range imaging, Eye, Coherence (optics)

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Proceedings Article | 4 March 2014 Paper

Ultrahigh speed endoscopic swept source optical coherence tomography using a VCSEL light source and micromotor catheter

Tsung-Han Tsai, Osman Ahsen, Hsiang-Chieh Lee, Kaicheng Liang, Michael Giacomelli, Benjamin Potsaid, Yuankai Tao, Vijaysekhar Jayaraman, Martin Kraus, Joachim Hornegger, Marisa Figueiredo, Qin Huang, Hiroshi Mashimo, Alex Cable, James Fujimoto

Proceedings Volume 8927, 89270T (2014) https://doi.org/10.1117/12.2040417

KEYWORDS: Optical coherence tomography, Endoscopy, Imaging systems, Esophagus, 3D image processing, Vertical cavity surface emitting lasers, Angiography, Tissues, In vivo imaging, Medicine

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Proceedings Article | 17 May 2013 Paper

High-speed ultra-broad tuning MEMS-VCSELs for imaging and spectroscopy

V. Jayaraman, B. Potsaid, J. Jiang, G. Cole, M. Robertson, C. Burgner, D. John, I. Grulkowski, W. Choi, T. H. Tsai, J. Liu, B. Stein, S. Sanders, J. Fujimoto, A. Cable

Proceedings Volume 8763, 87630H (2013) https://doi.org/10.1117/12.2018345

KEYWORDS: Vertical cavity surface emitting lasers, Imaging spectroscopy, Spectroscopy, Mirrors, Actuators, Optical coherence tomography, Spectroscopes, Eye, Absorption, Tunable lasers

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Proceedings Article | 26 March 2013 Paper

4D dynamic imaging of the eye using ultrahigh speed SS-OCT

Jonathan Liu, Ireneusz Grulkowski, Benjamin Potsaid, Vijaysekhar Jayaraman, Alex Cable, Martin Kraus, Joachim Hornegger, Jay Duker, James Fujimoto

Proceedings Volume 8567, 85670X (2013) https://doi.org/10.1117/12.2004369

KEYWORDS: Eye, Optical coherence tomography, Vertical cavity surface emitting lasers, Visualization, Image resolution, Laser tissue interaction, Video, Neodymium, Iris, Imaging systems

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Proceedings Article | 20 March 2013 Paper

Ultrahigh speed endoscopic optical coherence tomography using micro-motor imaging catheter and VCSEL technology

Tsung-Han Tsai, Yuankai Tao, Benjamin Potsaid, Vijaysekhar Jayaraman, Martin Kraus, Peter J. Heim, Joachim Hornegger, Hiroshi Mashimo, Alex Cable, James Fujimoto

Proceedings Volume 8571, 85710N (2013) https://doi.org/10.1117/12.2006952

KEYWORDS: Optical coherence tomography, Vertical cavity surface emitting lasers, Endoscopy, Imaging systems, Data acquisition, In vivo imaging, 3D acquisition, Colon, Image resolution, 3D image processing

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Proceedings Article | 8 February 2012 Paper

MEMS tunable VCSEL light source for ultrahigh speed 60kHz - 1MHz axial scan rate and long range centimeter class OCT imaging

Benjamin Potsaid, Vijaysekhar Jayaraman, James Fujimoto, James Jiang, Peter J. Heim, Alex Cable

Proceedings Volume 8213, 82130M (2012) https://doi.org/10.1117/12.911098

KEYWORDS: Optical coherence tomography, Vertical cavity surface emitting lasers, Range imaging, Light sources, Microelectromechanical systems, Eye, Imaging systems, Coherence (optics), Image resolution, Spectroscopy

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Proceedings Article | 7 February 2012 Paper

Design and performance of broadly tunable, narrow line-width, high repetition rate 1310nm VCSELs for swept source optical coherence tomography

V. Jayaraman, J. Jiang, B. Potsaid, G. Cole, J. Fujimoto, A. Cable

Proceedings Volume 8276, 82760D (2012) https://doi.org/10.1117/12.906920

KEYWORDS: Vertical cavity surface emitting lasers, Optical coherence tomography, Mirrors, Microelectromechanical systems, Range imaging, Imaging systems, Actuators, Optical pumping, Reflectivity, Dielectric mirrors

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Proceedings Article | 18 June 2004 Paper

Design and optimization of high-performance 1.3-µm VCSELs

Joachim Piprek, Manish Mehta, Vijaysekhar Jayaraman

Proceedings Volume 5349, (2004) https://doi.org/10.1117/12.543062

KEYWORDS: Vertical cavity surface emitting lasers, Quantum wells, Lithium, Solids, Absorption, Physics, Mirrors, Continuous wave operation, Calibration

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Proceedings Article | 8 December 2003 Paper

Wafer-bonded VCSELs with tunnel junctions

Manish Mehta, Vijay Jayaraman, Andrew Jackson, Shaomin Wu, Yae Okuno, Joachim Piprek, John Bowers

Proceedings Volume 5248, (2003) https://doi.org/10.1117/12.511773

KEYWORDS: Vertical cavity surface emitting lasers, Mirrors, Wafer bonding, Reflectivity, Semiconducting wafers, Interfaces, Reliability, Telecommunications, Resistance, Continuous wave operation

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Proceedings Article | 1 May 2000 Paper

10-Gb/s VCSEL-based data links

Frank Peters, David Welch, Vijaysekhar Jayaraman, Michael MacDougal, J. Tagle, Thomas Goodwin, Jeff Schramm, Ted Lowes, Sean Kilcoyne, Kevin Nary, Jonathan Bergey, Wendy Carpenter

Proceedings Volume 3946, (2000) https://doi.org/10.1117/12.384372

KEYWORDS: Vertical cavity surface emitting lasers, Multimode fibers, Resistance, Chlorine, Standards development, Oxides, Packaging, Eye models, Local area networks, Data transmission

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Proceedings Article | 29 April 1999 Paper

Long-wavelength vertical-cavity laser research at Gore

Vijaysekhar Jayaraman, J. Geske, Michael MacDougal, Frank Peters, Ted Lowes, T. Char, Dale Van Deusen, T. Goodnough, Mark Donhowe, Sean Kilcoyne, David Welch

Proceedings Volume 3627, (1999) https://doi.org/10.1117/12.347091

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Optical pumping, Mirrors, Reliability, Semiconducting wafers, Single mode fibers, Gallium arsenide, Interfaces, Wafer-level optics

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Proceedings Article | 1 May 1996 Paper

WDM array using long-wavelength vertical-cavity lasers

Vijaysekhar Jayaraman, Michael Kilcoyne

Proceedings Volume 2690, (1996) https://doi.org/10.1117/12.238929

KEYWORDS: Vertical cavity surface emitting lasers, Wavelength division multiplexing, Mirrors, Optical pumping, Superlattices, Quantum wells, Distributed Bragg reflectors, Semiconductors, Gallium arsenide

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Proceedings Article | 29 March 1996 Paper

Monolithic integration of refractive lenses with vertical-cavity lasers and detectors for optical interconnections

Eva Strzelecka, G. Thompson, Gerald Robinson, Matthew Peters, Brian Thibeault, Mark Mondry, Vijaysekhar Jayaraman, Frank Peters, Larry Coldren

Proceedings Volume 2691, (1996) https://doi.org/10.1117/12.236925

KEYWORDS: Lenses, Sensors, Gallium arsenide, Etching, Semiconducting wafers, Semiconductor lasers, Optical interconnects, Photomasks, Microlens, Semiconductors

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Showing 5 of 21 publications

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