Dr. Rajiv Pathak Profile

Dr. Rajiv Pathak

Senior Director at Lumileds Singapore Pte Ltd

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 13 March 2024 Presentation

Recent advances in microLED performance: efficiency, gamut, and reliability

Brendan Moran, Mark Holmes, Joseph Flemish, Robert Armitage, Zhongmin Ren, Hee Jin Kim, Rajiv Pathak, Oleg Shchekin, Hossein Lotfi

Proceedings Volume PC12906, PC1290601 (2024) https://doi.org/10.1117/12.3001933

KEYWORDS: Reliability, Indium gallium nitride, External quantum efficiency, Aluminium gallium indium phosphide, Passivation, Manufacturing, Epitaxy, Design and modelling

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Proceedings Article | 13 March 2024 Presentation + Paper

Segmented red, green, and blue light sources for energy efficient LCoS AR displays

Erik Young, Toni Lopez, Florent Monestir, Shih Chun Liu, Cheng Hou Loh, Saraswati ., Noad Shapiro, Ted Mihopoulos, Rajiv Pathak

Proceedings Volume 12906, 129060K (2024) https://doi.org/10.1117/12.3001621

KEYWORDS: Aluminium gallium indium phosphide, Liquid crystal on silicon, Augmented reality, Light emitting diodes, Indium gallium nitride

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Proceedings Article | 4 March 2022 Presentation + Paper

MicroLED architectures for low power wearable displays

Joseph Flemish, Zhongmin Ren, Wouter Soer, Robert Armitage, Hossein Lofti, Rajiv Pathak, Hee Jin Kim, Srinivasa Banna, Willem Sillevis-Smitt, Jia Cheng Tan, Yiongxiang Melvin Tio, Reigh Distor, Shimin Lim, Kheng Boo Lim

Proceedings Volume 12022, 1202203 (2022) https://doi.org/10.1117/12.2610191

KEYWORDS: External quantum efficiency, Light emitting diodes, Indium gallium nitride, Aluminium gallium indium phosphide, High dynamic range imaging, Organic light emitting diodes, Augmented reality, Semiconductors, Reliability, Internal quantum efficiency

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Proceedings Article | 4 March 2016 Paper

Improved long wavelength 14xx and 19xx nm InGaAsp/InP lasers

T. Tanbun-Ek, R. Pathak, Z. Xu, H. Winhold, F. Zhou, M. Peters, D. Schleuning, B. Acklin

Proceedings Volume 9733, 973307 (2016) https://doi.org/10.1117/12.2209723

KEYWORDS: High power lasers, Laser safety, Semiconductor lasers, Eye, Laser development, Diodes, Reliability, Laser welding, Aluminum nitride, Laser bonding, Indium, Semiconducting wafers

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Proceedings Article | 7 March 2014 Paper

High power and high efficiency 14xx-nm wavelength Fabry-Perot lasers

T. Tanbun-Ek, R. Pathak, Z. Wang, H. Winhold, S. Kim

Proceedings Volume 8965, 896511 (2014) https://doi.org/10.1117/12.2037978

KEYWORDS: High power lasers, Semiconductor lasers, Indium, Quantum wells, Continuous wave operation, Laser welding, Absorption, Therapeutics, Surgery

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Proceedings Article | 26 February 2013 Paper

Laser-bar stack using ELF heat-sinks mounted kinematically for double-sided cooling

A. Chin, J. Manni, R. Chin, J. Levy, M. Dogan, J. Jacob, R. Pathak, C. Wessling, K. Lang, H. Eppich, J. Fryer, T. Haverkamp

Proceedings Volume 8605, 86050P (2013) https://doi.org/10.1117/12.2002230

KEYWORDS: Collimation, Kinematics, Diodes, Polarization, Selenium, Dielectrics, Laser applications, Laser cutting, High power lasers, Fiber lasers

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Proceedings Article | 26 February 2013 Paper

Higher brightness laser diodes with smaller slow axis divergence

Wenyang Sun, Rajiv Pathak, Geoff Campbell, Henry Eppich, J. Jacob, Aland Chin, Jack Fryer

Proceedings Volume 8605, 86050D (2013) https://doi.org/10.1117/12.2004308

KEYWORDS: Surface plasmons, Continuous wave operation, Semiconductor lasers, Resistance, Transmission electron microscopy, Copper, Pulsed laser operation, Thermography, Neodymium

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Proceedings Article | 7 May 2012 Paper

Wavelength-stabilized fiber-coupled diode laser with 500 W output and 20 mm × mrad beam quality

D. Grasso, N. Shou, H. Chen, R. Pathak, P. Liang, S. Roh, D. Lee

Proceedings Volume 8381, 83810K (2012) https://doi.org/10.1117/12.921592

KEYWORDS: Semiconductor lasers, Fiber lasers, Polarization, Fiber couplers, Laser development, Fiber coupled lasers, Diodes, Multiplexing, Absorption, Laser optics

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Proceedings Article | 9 February 2012 Paper

Wavelength-stabilized fiber-coupled diode laser with 500-W output and 20-mm x mrad beam quality

D. Grasso, N. Shou, H. Chen, R. Pathak, Pa. Liang, S. Roh, D. Lee

Proceedings Volume 8241, 82410K (2012) https://doi.org/10.1117/12.910303

KEYWORDS: Semiconductor lasers, Fiber lasers, Polarization, Diodes, Fiber couplers, Laser development, Fiber coupled lasers, Multiplexing, Absorption, Laser optics

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Proceedings Article | 9 February 2012 Paper

Record-brightness laser-diode bars for fiber coupling

M. Dogan, R. Pathak, S. Ellison, H. Eppich, G. Campbell, J. Vignati, J. Jacob, K. Lang, R. Chin, M. Knapczyk, W. Sun, S. Fulghum, A. Chin

Proceedings Volume 8241, 82410G (2012) https://doi.org/10.1117/12.908673

KEYWORDS: Fiber lasers, Fiber couplers, Fiber coupled lasers, Reliability, Semiconductor lasers, Failure analysis, Resistance, Collimation, Laser applications

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Proceedings Article | 18 February 2010 Paper

Progress in high-brightness diode laser development based on tailored diode laser bars

S. Roh, D. Grasso, N. Shou, R. Pathak, G. Cheung, D. Schleuning, T. Hasenberg

Proceedings Volume 7583, 758310 (2010) https://doi.org/10.1117/12.842785

KEYWORDS: Semiconductor lasers, Polarization, Diodes, Fiber lasers, Fiber coupled lasers, Laser applications, Lasers, Laser marking, Laser development, Nd:YAG lasers

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