通过光腔衰荡测量确定高反射镜的空间涂层不均匀性。

Spatial coating inhomogeneity of highly reflective mirrors determined by cavity ringdown measurements.

作者信息

Tan Zhongqi, Yang Kaiyong, Long Xingwu, Zhang Yibo, Loock Hans-Peter

出版信息

Appl Opt. 2014 May 1;53(13):2917-23. doi: 10.1364/AO.53.002917.

DOI:10.1364/AO.53.002917

Abstract

The inhomogeneity of high-reflectivity mirror coatings is a potential error source in the application of the cavity ringdown technique. Here, the ringdown times for different transverse modes were recorded. Together with the observed spatial distribution of these modes the ringdown times can be used to approximately locate the position of coating defects. A simple model based on a weighted sum of Hermite-Gaussian mode functions is used to explain the experimental results.

摘要

高反射率镜涂层的不均匀性是腔衰荡技术应用中的一个潜在误差源。在此，记录了不同横向模式的衰荡时间。结合这些模式的观测空间分布，衰荡时间可用于大致定位涂层缺陷的位置。基于厄米 - 高斯模式函数加权和的简单模型用于解释实验结果。