基于衍射原理测量石英玻璃的热光系数  

Measurement of Thermo-optical Coefficient of Quartz Glass Based on Diffraction Principle

作　　者：陈少华[1] 刘云虎 王芳[1] 杨振清[1] 赵卉[1] 黄新宇 CHEN Shaohua;LIU Yunhu;WANG Fang;YANG Zhenqing;ZHAO Hui;HUANG Xinyu(Science College,Chinese Petroleum University,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)理学院,北京102249

出　　处：《实验室研究与探索》2023年第10期52-54,158,共4页Research and Exploration In Laboratory

基　　金：中国石油大学(北京)油气资源与探测国家重点实验室定向课题(PRP/DX-2308);北京市高等教育学会教改项目(YB202147)。

摘　　要：热光系数是描述热光效应的基本物理量之一。目前热光系数的常见测量方法是干涉法和光谱法,但均需复杂的实验设计和较高的仪器成本。为此,提出了一种基于衍射原理测量石英玻璃热光系数的方法,仅采用一台分光计即可实现石英玻璃热光系数的测量。通过测量石英光栅的第三级衍射光栅光谱随温度的漂移曲线,得到石英玻璃热光系数1.092×10^(-5)/K,与石英玻璃热光系数理论值1.0×10^(-5)/K非常接近。Thermo-optical coefficient is a basic physical coefficient,and used to describe the thermo-optical effect.At present,interference and spectrum are two main methods of measuring the thermal-optical coefficient,however,which both require complex experimental design and high-cost instrument.In this paper,a method of measuring the thermo-optical coefficient of quartz glass based on diffraction principle is proposed.By measuring the spectral drifting of the third-order grating spectrum with different temperature,the experimental thermo-optical coefficient of the quartz glass is 1.092×10^(-5)/K,agreeing with the typical value of 1.0×10^(-5)/K.

关 键 词：光栅衍射 石英玻璃 热光系数 折射率 

分 类 号：O436.2[机械工程—光学工程]