Photon statistics and bunching of a chaotic semiconductor laser
Photon statistics and bunching of a chaotic semiconductor laser
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混沌半导体激光器的光子统计和聚束
DOI：
10.1364/oe.26.005991
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发表时间：
2018-03-05
期刊：
影响因子：
3.8
通讯作者：
Guo, Xiaomin
中科院分区：
文献类型：
--
作者：
Guo, Yanqiang;Peng, Chunsheng;Guo, Xiaomin
本文从实验和理论两方面研究了外光反馈半导体激光器的光子统计和聚束特性。在混沌状态下，随着平均光子数的增加，光子数分布由玻色-爱因斯坦分布向泊松分布转变。二阶相干度从2到1逐渐减小。基于Hanbury Brown-Twiss方案，在不同的注入电流和反馈强度下，实验观察到明显的光子聚束，这表明了相关发射光的随机性。接近阈值的注入电流和强反馈强度使激光的性能更加集中。通过高速模拟检测同时确认宏观混沌动力学。理论结果与实验结果定性一致。通过对控制参数的量化，对随机数发生器和成像科学中提取随机性和获得期望的熵源具有潜在的实用价值。(C) 2018年美国光学学会根据OSA开放获取出版协议的条款
The photon statistics and bunching of a semiconductor laser with external optical feedback are investigated experimentally and theoretically. In a chaotic regime, the photon number distribution is measured and undergoes a transition from Bose-Einstein distribution to Poisson distribution with increasing the mean photon number. The second order degree of coherence decreases gradually from 2 to 1. Based on Hanbury Brown-Twiss scheme, pronounced photon bunching is observed experimentally for various injection currents and feedback strengths, which indicates the randomness of the associated emission light. Near-threshold injection currents and strong feedback strengths modify exactly the laser performance to be more bunched. The macroscopic chaotic dynamics is confirmed simultaneously by high-speed analog detection. The theoretical results qualitatively agree with the experimental results. It is potentially useful to extract randomness and achieve desired entropy source for random number generator and imaging science by quantifying the control parameters. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement