光栅外腔反馈半导体激光器及稳频系统的动态特性测试

发布时间：2019-05-11 17:31

【摘要】：能够在复杂的使用环境中保持输出激光频率稳定一直都是激光器研究的重要内容。人们不仅需要直接优化系统结构,还应对系统特性进行针对性地校正和优化。文章构建了一套高效、高分辨率测量激光频率变化的实验系统,通过研究激光器被调制后的输出频率变化,可获得在实验室环境中ECDL激光器及其稳频系统的动态响应。实验中记录了正弦点频和方波两种信号调制后激光频率的响应,在进行FFT分析后获得了幅频特性和相频特性。结果表明方波调制信号测量方案同正弦点频测量方案结果一致,而且不需要多次测量,测量效率高。利用该测量系统还可以获得机械冲击后激光器的幅频特性,可用于分析闭环系统的冲击响应特征,从而为类似环境中闭环系统参数校正和优化提供实验依据。
[Abstract]:Maintaining the stability of output laser frequency in complex application environment has always been an important part of laser research. People need not only to optimize the system structure directly, but also to correct and optimize the system characteristics. In this paper, an experimental system for measuring laser frequency change with high efficiency and high resolution is constructed. By studying the output frequency change of laser modulation, the dynamic response of ECDL laser and its frequency stabilization system can be obtained in laboratory environment. The response of laser frequency after sine point frequency and square wave signal modulation is recorded in the experiment, and the amplitude frequency characteristics and phase frequency characteristics are obtained after FFT analysis. The results show that the square wave modulated signal measurement scheme is in agreement with the sine point frequency measurement scheme, and does not need to be measured many times, and the measurement efficiency is high. The amplitude-frequency characteristics of the laser after mechanical shock can also be obtained by using the measurement system, which can be used to analyze the impulse response characteristics of the closed-loop system, thus providing experimental basis for parameter correction and optimization of the closed-loop system in similar environments.
【作者单位】：山西大学物理电子工程学院;量子光学与光量子器件国家重点实验室山西大学光电研究所;山西大学极端光学协同创新中心;
【基金】：国家自然科学基金(11374198) 国家自然科学基金委国家重大科研仪器设备研制专项(61227902)
【分类号】：TN248.4

【相似文献】