Intensity asymmetry of facet output mode spectrum of a semiconductor laser biased below threshold
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摘要: 本文从半导体激光器多模速率方程组出发,考虑到了半导体激光器实际运行时自发辐射峰值波长与增益峰值波长不一致的情形,对阈值以下半导体激光器的端面输出谱的非对称性进行了研究。结果表明,这种非对称分布可以认为是由于自发辐射峰值波长短于增益峰值波长所造成的。理论模拟的结果与实验相符。Abstract: Starting from the multimode rate equations and concerning the fact of wavelength diffe rence of the spontaneous emission peak and gain peak,the intensity asymmetry of the longitudinal mode spectrum of the semiconductor laser biased below threshold is studied.The results indicate that the reason of the asymmetry is from the shorter peak wavelength of the spontaneous radiation than the gain peak wavelength.The experiment confirmed the theoretical prediction.
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Keywords:
- semiconductor laser /
- output mode spectrum /
- asymmetry
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