Effect of external cavity's feedback light on state density of photon in internal cavity

被引：0
|
作者：
Hu X. [1 ]
机构：
[1] College of Physical Science and Technology, Sichuan University, Chengdu
来源：
Guangxue Xuebao/Acta Optica Sinica | 2010年 / 30卷 / 09期
关键词：
Laser diode; Optical measurement; Photon state density; Quantum efficiency; Self-mixing interference; Slope efficiency;
D O I：
10.3788/AOS20103009.2684
中图分类号：
学科分类号：
摘要：
Effects of external cavity's feedback light on length of internal cavity and the photon state density in internal cavity are investigated, and effects of self mixing interference are discussed in detail. The results demostrate that, external cavity's feedback light not only changes front facet reflectivity of Fabry-Perot cavity, but also cause discontinuous variation of equivalent length of internal cavity, and then photon state density in internal cavity also discontinuously varies. So that, the external feedback light makes quantum efficiency continuously and discontinuously vary. Also gain coefficient and saturated light intensity vary continuously and discontinuously. Also self-mixing interference signal does not change discontinuously with the complex cavity modes produced by external cavity's feedback light, and effect of external cavity's feedback light on charge carrier lifetime is very small. External cavity's feedback light evidently reduces radiative recombination lifetime of charge carrier, raises radiative recombination efficiency and weakens non-radiative recombination efficiency.
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页码：2684 / 2689
页数：5
相关论文
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