摘要
本文讨论一个基本的光学问题。采用法布里——珀罗干涉仪透射函数的卷积方程详细分析了法布里——珀罗干涉仪在入射激光存在一定线宽的条件下透射函数的特性。由于仪器函数的自身线宽及其周期性的加宽作用结果,导致透射函数的半峰值线宽受到加宽,可见度下降。因而采用透射函数的半峰值线宽测量入射激光线宽的方法是不严格的,仅在一定的条件下才适用。
In this paper the transmission function properties of Fabry-Perot interferometer is analyzed by the convolution equation of transmission function when linewidth of input laser is not equal to zero. The full width of transmission function at half maximum is broadened and the visibility is reduced because of the instrumental linewidth and the periodicity of transmission function. The method for measuring laser linewidth using the fullwidth of transmission function at maximum is not strict, it must satisfy some limiting conditions. The limiting conditions for measuring laser linewidth using the full width transmission function at maximum are given.
出处
《光学机械》
CSCD
1990年第5期18-25,共8页
关键词
干涉仪
激光线宽
测量
透射函数
Fabry-perot Interferometer
Transmission Function
