Optical saturation in continuous-wave photothermal deflection spectroscopy: Quantitative investigation of fundamental and harmonic components

被引：0
|
作者：
Li, Bincheng [1 ]
Gupta, Rajendra [1 ]
机构：
[1] Department of Physics, University of Arkansas, Fayetteville, AR 72701, United States
来源：
Applied Optics | 2001年 / 40卷 / 09期
关键词：
Electromagnetic wave attenuation - Harmonic generation - Laser tuning - Spectroscopic analysis - Stimulated emission - Thermal conductivity;
D O I：
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中图分类号：
学科分类号：
摘要：
A rigorous theoretical model has been developed that describes the effects of optical saturation on the deflection signals in cw photothermal experiments. In this model the spatial profile of the excitation beam has been taken into account. Numerical calculations have been performed to determine the saturation behavior of the cw photothermal deflection signals at both the fundamental and the second-harmonic frequencies for sine-wave modulation of the excitation beam. Saturation behavior for square-wave modulation has also been investigated. © 2001 Optical Society of America.
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页码：1563 / 1569
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