The reflectivity of optical mirrors can be obtained by measuring linewidth of transmission spectrum of optical cavity and the fineness of Fabry-Perot (F-P) cavity.
谐振腔精细度法是通过测量光学谐振腔透射谱线宽度来实现对光学反射镜反射率的测定。
Using the cavity ringdown method and Changing the used mirrors, we measured the reflectivity of four mirrors under the ordinary condition and obtained the absorption of the cavity.
由于镜片的反射率在不同的环境中是不同的，我们在这里利用腔衰荡四腔镜轮换的方法，在常态下测得了四腔镜的反射率，同时得到了腔内气体在测量范围的吸收情况。
The principle of reflectivity measurement using CRDS is analyzed in detail, and the curves between the ring down time and reflectivity are obtained by simulating the processes of cavity ring down.
重点分析了CRDS测量超高反射率的原理，对反射率与衰荡时间的关系曲线进行了模拟。
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