【摘要】 提出了一种高灵敏度的棱镜型光热偏转光谱法 ,给出了系统的理论分析 ,导出了由泵浦光引起的探测光的偏向角表达式 .并与普通型光热偏转技术作了比较 ,理论分析结果表明 ,棱镜型光热偏转检测方法比普通型光热偏转技术具有更高的灵敏度 .更多还原

【Abstract】 The fundamental principle of the measurement on the absorption coefficient of thin films with Photothermal Deflection Spectroscopy developed in recent years, the general expression for the Photothermal Deflection Spectroscopy has been investigated. The signal of the photothermal deflection in air has been numerically calculated.更多还原