发表机构
ITEAM Research Institute, Universitat Politècnica de València（瓦伦西亚理工大学 ITEAM 研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文为直接调制半导体激光器建立时间频率框架，用Cohen类分布表示光场，推导小信号解并验证核函数条件，实现激光啁啾提取。
AI 中文摘要
我们为直接调制半导体激光器的动力学建立了一个时间频率框架，其中从单模速率方程获得的光场由Cohen类分布表示。针对RC滤波方波电流脉冲和正弦调制，推导了闭合形式的小信号解，包括含增益压缩和自发发射的精确啁啾功率比，以及正弦调制场维格纳分布的谱线展开。满足两个已知条件的核函数将激光啁啾作为第一条件矩返回。
英文摘要
We develop a time frequency framework for the dynamics of directly modulated semiconductor lasers in which the optical field obtained from the singlemode rate equations is represented by distributions of Cohen class. Closed form small signal solutions are derived for RC filtered square current pulses and for sinusoidal modulation, including the exact chirp to power ratio with gain compression and spontaneous emission and a line expansion of the Wigner distribution of the sinusoidally modulated field. Kernels satisfying two known conditions return the laser chirp as the first conditional moment.
