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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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