Demonstration of InGaAs/AlGaAs strained‐layer distributed‐feedback grating‐surface‐emitting lasers with a buried second‐order grating structure
作者:
S. K. Liew,
N. W. Carlson,
D. P. Bour,
G. A. Evans,
E. Van Gieson,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 58,
issue 3
页码: 228-230
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.104697
出版商: AIP
数据来源: AIP
摘要:
We have fabricated InGaAs/AlGaAs strained‐layer distributed‐feedback grating‐surface‐emitting lasers with a buried grating structure. The device consists of a pumped distributed‐feedback section terminated on both sides by unpumped distributed Bragg reflector sections. cw operation in a stable single longitudinal mode is achieved up to six times threshold. The threshold current density is ∼600 A/cm2. The far‐field beam divergence is predominantly single lobed and diffraction limited. The spectral linewidth is 1.0 MHz at an output power of 8 mW.
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