| 脉冲激光光热失调技术 |
| |
| 引用本文： | 郝宏刚,李斌成,刘明强.脉冲激光光热失调技术[J].光学学报,2008,28(10):1942-1946. |
| |
| 作者姓名： | 郝宏刚 李斌成 刘明强 |
| |
| 作者单位： | 1. 中国科学院光电技术研究所,四川,成都,610209;中国科学院研究生院,北京,100039
2. 中国科学院光电技术研究所,四川,成都,610209 |
| |
| 摘 要： | 将脉冲激光作为加热光引入光热失调测量技术中,提出了脉冲激光光热失调测量技术,介绍了其基本原理,分析了脉冲激光光热失调测量技术用于测量光学薄膜微弱吸收的可行性.实验以532 nm的高反射光学薄膜为样品,采用波长为632.8 nm的探测光,研究了脉冲激光光热失调技术信号振幅的时间特性以及最大信号幅值与样品表面加热光能量密度、加热光斑与探测光斑相对位置的变化关系.研究结果表明,光热信号随时间先增大后减小,而随表面加热光能量密度的提高而增大,当样品表面加热和探测光斑重合时光热信号最大.
|
| 关 键 词： | 光学薄膜 脉冲激光 光热失调 微弱吸收 |
| 收稿时间： | 2008/2/20 |
Pulsed Laser Photothermal Detuning Technique |
| |
| Hao Honggang,Li Bincheng,Liu Mingqiang.Pulsed Laser Photothermal Detuning Technique[J].Acta Optica Sinica,2008,28(10):1942-1946. |
| |
| Authors: | Hao Honggang Li Bincheng Liu Mingqiang |
| |
| Institution: | Hao Honggang1,2 Li Bincheng1 Liu Mingqiang1,21Institute of Optics , Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China2Graduate University of Chinese Academy of Sciences,Beijing 100039,China |
| |
| Abstract: | A pulsed laser photothermal detuning technique,in which the temperature induced spectral shifts of optical coatings are used to measure photothermal signal,is presented.A theoretical model is developed to describe the pulsed laser photothermal detuning signal.The application to the absorption measurement of optical coatings is discussed.An experiment is performed with a highly reflective(HR) coating used in 532 nm.The amplitude and temporal behavior of the pulsed laser photothermal detuning are detected at ... |
| |
| Keywords: | optical coatings pulsed laser photothermal detuning weak absorption |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
