Dr. Prabhu Thiagarajan Profile

Dr. Prabhu Thiagarajan

Chief Technology Officer at Leonardo Electronics US Inc

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 12 March 2024 Presentation + Paper

Presentation + Paper

Aging mechanisms of broad area high-power ~800nm laser diodes

E. McVay, R. Deri, J. Li, S. Baxamusa, W. Fenwick, M. Boisselle, D. Mittelberger, J. Varley, R. Swertfeger, L. Gilmore, M. Crowley, P. Thiagarajan, J. Song, G. Thaler, C. Schuck, A. Dusty

Proceedings Volume 12867, 128670E (2024) https://doi.org/10.1117/12.2691022

KEYWORDS: Oxygen, Waveguides, Quantum devices, Quantum wells, Semiconductor lasers, Absorption, Quantum simulation, Quantum experiments, Independent component analysis, Quantum emitters

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Proceedings Article | 12 March 2024 Presentation + Paper

Presentation + Paper

Compact-lightweight fiber-coupled diode pump source using a bar approach

Jenna Bergevin, Michael Oswald, Connor Magness, Christian Hemala, Carlos Soto, Xochitl Cooper, Mark Crowley, Clifford Headley, Steve Patterson, Prabhu Thiagarajan

Proceedings Volume 12867, 1286712 (2024) https://doi.org/10.1117/12.3000081

KEYWORDS: Diodes, Fiber amplifiers, Heatsinks, Reliability, Electrooptics, Electrical conductivity, Defense and security, Absorption, Packaging, Industry

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Proceedings Article | 11 March 2021 Presentation + Paper

Presentation + Paper

Ultra-high peak power laser diode arrays with 1kA-class low-SWaP drive electronics

L. Woods, M. Crowley, P. Thiagarajan, E. Ruben, J. Goings, T. Hosoda, M. Rowe, B. Liu, B. Caliva, N. Crapo

Proceedings Volume 11667, 1166703 (2021) https://doi.org/10.1117/12.2575948

KEYWORDS: Electronics, Semiconductor lasers, Thermography, Micro optics, Laser development, Diodes, Beam shaping

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Proceedings Article | 11 March 2020 Presentation

Presentation

Thermoreflectance-based measurements of facet optical absorption in aged high-power diode lasers (Conference Presentation)

Aman Kumar Jha, Chen Li, Kevin Pipe, Mark Crowley, Daniel Fullager, Jason Helmrich, Prabhu Thiagarajan, Robert Deri, Rebecca Swertfeger, Paul Leisher

Proceedings Volume 11261, 112610I (2020) https://doi.org/10.1117/12.2547344

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Proceedings Article | 24 February 2020 Presentation + Paper

Presentation + Paper

Lasertel VCSEL development progress for automotive lidar

J. Maillard, E. Ruben, P. Thiagarajan, B. Caliva, L. West, R. Walker

Proceedings Volume 11300, 1130005 (2020) https://doi.org/10.1117/12.2547523

KEYWORDS: Vertical cavity surface emitting lasers, LIDAR, Inductance, Resistance, Oxides, Reliability, Laser sources, Laser development, Semiconductor lasers, Temperature metrology

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Proceedings Article | 4 March 2019 Presentation

Presentation

Does collimation reduce the lifetime of broad area diode laser pumps? (Conference Presentation)

Paul Leisher, Eyal Feigenbaum, Rebecca Swertfeger, Matthew Boisselle, Susant Patra, Robert Deri, Aman Jha, Chen Li, Kevin Pipe, Prabhu Thiagarajan

Proceedings Volume 10899, 1089903 (2019) https://doi.org/10.1117/12.2513331

KEYWORDS: Collimation, Broad area laser diodes

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Proceedings Article | 4 March 2019 Paper

Paper

Ultra-short pulse NIR and SWIR laser diode illuminators for automotive LiDAR

R. Walker, P. Thiagarajan, E. Ruben, J. Maillard, B. Caliva, J. Goings, L. West

Proceedings Volume 10900, 109000J (2019) https://doi.org/10.1117/12.2510776

KEYWORDS: Semiconductor lasers, LIDAR, Vertical cavity surface emitting lasers, Short wave infrared radiation, Near infrared, Electronics, Diodes, Laser sources, Micro optics

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Proceedings Article | 4 May 2018 Presentation + Paper

Presentation + Paper

Megawatt-class peak power laser diode pump sources

P. Thiagarajan, J. Goings, Brian Caliva, E. Ruben, R. Walker

Proceedings Volume 10637, 106370G (2018) https://doi.org/10.1117/12.2305384

KEYWORDS: Semiconductor lasers, Diodes, Collimation, Fiber lasers, Power supplies, Laser systems engineering, Micro optics, Lenses, Optical components

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Proceedings Article | 4 May 2018 Presentation + Paper

Presentation + Paper

CCD-based thermoreflectance imaging of high-power diode lasers with back-irradiance

Chen Li, Kevin Pipe, Chuanshun Cao, Prabhu Thiagarajan, Robert Deri, Paul Leisher

Proceedings Volume 10637, 106370C (2018) https://doi.org/10.1117/12.2302434

KEYWORDS: Semiconductor lasers, Reflectivity, CCD cameras, Temperature metrology, Absorption, Gallium arsenide, Bismuth, High power lasers, Thermography, Resistance

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Proceedings Article | 19 February 2018 Presentation + Paper

Presentation + Paper

Advancements of ultra-high peak power laser diode arrays

D. Crawford, P. Thiagarajan, J. Goings, B. Caliva, S. Smith, R. Walker

Proceedings Volume 10514, 105140H (2018) https://doi.org/10.1117/12.2294046

KEYWORDS: Semiconductor lasers, Collimation, Diodes, Micro optics, Fiber lasers, Laser applications, Lenses, Packaging, Laser systems engineering, Power supplies

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Proceedings Article | 1 May 2017 Presentation + Paper

Presentation + Paper

Direct-diode laser illumination and pointing at eye-safe SWIR wavelengths

Nick Moor, John Goings, Prabhu Thiagarajan, Brian Caliva

Proceedings Volume 10192, 101920H (2017) https://doi.org/10.1117/12.2262721

KEYWORDS: Short wave infrared radiation, Beam shaping, Laser sources, Near infrared, Laser applications, Semiconductor lasers, High power lasers, Diodes, Defense technologies, Fiber optic illuminators

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Proceedings Article | 21 February 2011 Paper

Paper

Reliable high-power long-pulse 8XX-nm diode laser bars and arrays operating at high temperature

Li Fan, Chuanshun Cao, Gerald Thaler, Dustin Nonnemacher, Feliks Lapinski, Irene Ai, Brian Caliva, Suhit Das, Robert Walker, Linfei Zeng, Mark McElhinney, Prabhu Thiagarajan

Proceedings Volume 7918, 791805 (2011) https://doi.org/10.1117/12.871184

KEYWORDS: Semiconductor lasers, Pulsed laser operation, Quantum wells, High power lasers, Laser development, Temperature metrology, Waveguides, Lasers, Laser damage threshold, Reflectivity

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Proceedings Article | 18 February 2010 Paper

Paper

Recent development of high-power-efficiency 50-W CW TE/TM polarized 808-nm diode laser bar at Lasertel

Chuanshun Cao, Li Fan, Irene Ai, Jiang Li, Brian Caliva, Linfei Zeng, Prabhu Thiagarajan, Mark McElhinney

Proceedings Volume 7583, 75830L (2010) https://doi.org/10.1117/12.841057

KEYWORDS: Semiconductor lasers, Waveguides, Quantum wells, Continuous wave operation, Indium, Laser development, Reliability, Resistance, Yield improvement

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Proceedings Article | 7 May 2009 Paper

Paper

Thermally insensitive laser diode arrays

Andrew White, Gavin Hall, John Barr, Mark McElhinney, Prabhu Thiagarajan, Chuanshun Cao

Proceedings Volume 7325, 73250P (2009) https://doi.org/10.1117/12.819791

KEYWORDS: Temperature metrology, Resonators, Fiber Bragg gratings, Diodes, Semiconductor lasers, Nd:YAG lasers, Laser resonators, Q switching, Glasses, Laser development

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Proceedings Article | 1 June 2004 Paper

Paper

High-efficiency high-power 808-nm laser array and stacked arrays optimized for elevated temperature operation

Paul Crump, Trevor Crum, Mark DeVito, Jason Farmer, Michael Grimshaw, Zack Huang, Scott Igl, Steve Macomber, Prabhu Thiagarajan, Damian Wise

Proceedings Volume 5336, (2004) https://doi.org/10.1117/12.533262

KEYWORDS: Heatsinks, High power lasers, Polarization, Indium, Semiconductor lasers, Temperature metrology, Reflectivity, Mirrors, Copper

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Showing 5 of 15 publications

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