Dr. Haojun Zhang Profile

Dr. Haojun Zhang

at Univ of California Santa Barbara

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Author

Publications (6)

Proceedings Article | 21 March 2023 Poster

Demonstration and optimization of c-plane InGaN based edge emitting laser diodes grown on strain relaxed template

Hsun-Ming Chang, Philip Chan, Norleakvisoth Lim, Vincent Rienzi, Haojun Zhang, Michael Gordon, Steven DenBaars, Shuji Nakamura

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2661601

KEYWORDS: Indium gallium nitride, Semiconductor lasers, Indium, Waveguides, Surface roughness, Refractive index, Absorption

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Proceedings Article | 21 March 2023 Presentation

Green edge-emitting laser diodes with porous GaN cladding and deep ridge waveguiding

Emily Trageser, Matthew Wong, Ryan Anderson, Haojun Zhang, Jiaao Zhang, Arturo Juan, Steven DenBaars, Shuji Nakamura

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2650626

KEYWORDS: Cladding, Gallium nitride, Semiconductor lasers, Etching, Electrochemical etching, Waveguides, Refractive index, Nanolithography, Indium gallium nitride, Dispersion

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Proceedings Article | 21 March 2023 Presentation

Narrow ridge III-nitride m-plane violet edge-emitting laser diodes with sidewall passivation using atomic layer deposition

Matthew Wong, Haojun Zhang, Emily Trageser, Ryan Anderson, James Speck, Shuji Nakamura, Steven DenBaars

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2646155

KEYWORDS: Atomic layer deposition, Semiconductor lasers, Metalorganic chemical vapor deposition, Laser development, Etching, Quantum computing, Optoelectronic devices, Medical research, Laser applications, Gallium nitride

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Proceedings Article | 5 March 2022 Presentation

Demonstration and temperature-dependent analysis of efficient semipolar violet laser diodes heteroepitaxially grown on high-quality low-cost GaN/sapphire substrates

Haojun Zhang, Hongjian Li, Panpan Li, Shuji Nakamura, Steven DenBaars

Proceedings Volume PC12001, PC120010G (2022) https://doi.org/10.1117/12.2610614

KEYWORDS: Semiconductor lasers, Gallium nitride, Electroluminescence, Vapor phase epitaxy, Sapphire, Pulsed laser operation, Light emitting diodes, Finite element methods, Device simulation

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Proceedings Article | 24 February 2020 Presentation + Paper

Semipolar group III-nitride distributed-feedback blue laser diode with Indium tin oxide surface grating

Haojun Zhang, Daniel Cohen, Philip Chan, Matthew Wong, Shlomo Mehari, Shuji Nakamura, Steven DenBaars

Proceedings Volume 11301, 1130102 (2020) https://doi.org/10.1117/12.2544428

KEYWORDS: Semiconductor lasers, Gallium nitride, Electron beam lithography, Optical design, Oxides

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Proceedings Article | 1 March 2019 Paper

Semipolar III-nitride laser diodes for solid-state lighting

Shlomo Mehari, Daniel Cohen, Daniel Becerra, Haojun Zhang, Claude Weisbuch, James Speck, Shuji Nakamura, Steven DenBaars

Proceedings Volume 10939, 109390G (2019) https://doi.org/10.1117/12.2506798

KEYWORDS: Absorption, Magnesium, Electron beam lithography, Doping, Quantum wells, Semiconductor lasers, Gallium nitride, Waveguides, Cladding, Solid state lighting

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Showing 5 of 6 publications

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