ANALYSIS OF DIFFERENTIAL GAIN IN GAAS/ALGAAS QUANTUM-WELL LASERS

被引：13
|
作者：
CHEN, PA [1 ]
CHANG, CY [1 ]
JUANG, C [1 ]
机构：
[1] ITRI, OPTOELECTR & SYST LABS T200, HSINCHU 310, TAIWAN
来源：
JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 01期
关键词：
D O I：
10.1063/1.357064
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The differential gain of a quantum-well laser is studied theoretically with use of both a parabolic band model and a valence-band-mixing model. In the valence-band-mixing model, the gain profile is derived from the multiband effective mass theory (k.p method) as well as the density matrix formalism. The peak gain including the band-mixing effect is significantly reduced to 1.5-2 times when compared to the conventional parabolic band model. There is still a larger differential gain using the parabolic band model than using the band-mixing model. The magnitudes of differential gains for these two models give the order of 10(-16)-10(-15) cm2, which is in agreement with the experimental results. Besides, the quantum-well thickness also influences the differential gain, which is enhanced by a thinner quantum-well structure.
引用
收藏
页码：85 / 91
页数：7
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