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Nonlinear Dynamics of Phase-Locked Semiconductor Laser Arrays

锁相半导体激光阵列的非线性动力学

基本信息

批准号：
8906214
负责人：
Herbert Winful
金额：
$ 36.75万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-03-15 至 1994-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906214&HistoricalAwards=false
关键词：
Nonlinear Dynamics Phase Locked Semiconductor

项目摘要

The University of Michigan and Oregon Graduate Center are collaborating on theoretical and experimental investigation of the nonlinear spatio-temporal dynamics of phase-locked semiconductor laser arrays. These arrays are of great technological importance as high power sources for applications such as optical communications, optical data recording, and optical pumping of rare-earth solid state lasers. In this proposed program, the process of self-organization in which a collection of initially independent lasers lock to produce a spatially coherent structure will be studied. The stability of the phase-locked state will be studied and means will be devised to enhance the temporal stability of laser arrays. Their response to current modulation will also be investigated. When stable phase locking of the array is not achieved, the predicted behavior includes regular self-pulsations, temporally chaotic structures, and full developed spatio-temporal chaos. The various operating regimes of laser arrays will be characterized by means of a streak camera that permits real- time monitoring of spatio-temporal phenomena with a 2-picosecond temporal resolution. The results of this investigation will not only extend our understanding of the collective behavior of coupled nonlinear oscillators but will aid the technologically important quest for stable, compact, high power semiconductor laser sources.

密歇根大学和俄勒冈研究生中心正在合作对锁相半导体激光阵列的非线性时空动力学进行理论和实验研究。这些阵列作为高功率源，对于光通信、光学数据记录和稀土固态激光器的光泵浦等应用具有重要的技术重要性。在这个拟议的计划中，将研究自组织过程，其中一组最初独立的激光器锁定以产生空间相干结构。将研究锁相态的稳定性，并设计方法来增强激光阵列的时间稳定性。它们对电流调制的响应也将被研究。当阵列未实现稳定锁相时，预测的行为包括规则的自脉动、时间混沌结构和完全发展的时空混沌。激光阵列的各种操作状态将通过条纹相机来表征，该相机允许以 2 皮秒时间分辨率实时监控时空现象。这项研究的结果不仅将扩展我们对耦合非线性振荡器集体行为的理解，而且将有助于在技术上寻求稳定、紧凑、高功率半导体激光源。