AlGaInN laser diodes grown on an ELO-GaN substrate vs. on a sapphire substrate

2002 ◽  
Author(s):  
T. Asano ◽  
T. Tojyo ◽  
K. Yanashima ◽  
M. Takeya ◽  
T. Hino ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
Laser Diodes

Entirely Crack-Free Ultraviolet GaN/AlGaN Laser Diodes Grown on 2-in. Sapphire Substrate

2007 ◽  
Vol 46 (9A) ◽  
pp. 5782-5784 ◽  
Author(s):  
Harumasa Yoshida ◽  
Yasufumi Takagi ◽  
Masakazu Kuwabara ◽  
Hiroshi Amano ◽  
Hirofumi Kan
Keyword(s):  
Sapphire Substrate ◽  
Laser Diodes

InGaN/GaN/AlGaN-based laser diodes grown on epitaxially laterally overgrown GaN

1999 ◽  
Vol 14 (7) ◽  
pp. 2716-2731 ◽  
Author(s):  
Shuji Nakamura
Keyword(s):  
Sapphire Substrate ◽  
Laser Diodes ◽  
Single Mode ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Field Pattern ◽  
Threading Dislocations ◽  
Lateral Overgrowth ◽  
Far Field Pattern ◽  
Structure Laser

Epitaxially laterally overgrown GaN on sapphire was used to reduce the number of threading dislocations originating from the interface of the GaN epilayer with the sapphire substrate. The GaN layer above the SiO2 mask area surrounding the window and corresponding to the lateral overgrowth was nearly free of threading dislocations. A high density of threading dislocations was observed in the vicinity of GaN grown in the window regions. InGaN multiquantum well-structure laser diodes (LDs) grown on pure GaN substrates, which were fabricated by removing the sapphire substrate, were demonstrated. The LDs with an output power of 5 mW exhibited a lifetime of more than 290 h and an estimated lifetime of 10,000 h despite a relatively large threshold current density. The far-field pattern of the LDs with a cleaved mirror facet revealed single-mode emission without any interference effects.

Room-Temperature Continuous-Wave Electrically Driven Semipolar (202̅1) Blue Laser Diodes Heteroepitaxially Grown on a Sapphire Substrate

ACS Photonics ◽  
2020 ◽  
Vol 7 (7) ◽  
pp. 1662-1666 ◽  
Author(s):  
Haojun Zhang ◽  
Hongjian Li ◽  
Panpan Li ◽  
Jie Song ◽  
James S. Speck ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
Room Temperature ◽  
Continuous Wave ◽  
Laser Diodes ◽  
Blue Laser
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