By analyzing the direct frequency modulation and optical feedback effect of laser diode, a theoretical model for measuring small vibration displacement and velocity is discussed.

分析了在直接频率调制下，激光二极管中的光反馈效应，探讨了振动微小位移和速度的理论模型。

youdao

The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.

采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。

youdao

We present a signal_processing system developed for enhancing the sensitivity of absorption measurement based on tunable diode laser wavelength modulation spectroscopy.

基于可调谐半导体激光吸收光谱，提出了一种新的信号处理方法用于提高吸收光谱测量的灵敏度。

youdao