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首页> 外文期刊>Applied Optics >Model for continuous-wave laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids
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Model for continuous-wave laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids

机译:光学透明表面吸收固体的连续波激光诱导热透镜光谱模型

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摘要

A theoretical model for cw laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids is developed. In the model, the sample is represented as a set of discrete layers with certain thicknesses and light absorptivities. The bloomed thermo-optical element in the sample is described with a summation of heat-flux functions for all the layers. The model employs simple mathematical expressions and can be used for both steady-state and time-resolved thermal lens experiments. Good coincidence of the experimental and theoretically predicted signal dependences is achieved. This model is verified for volume-absorbing samples (colored optical glasses) and used successfully to calculate absorbances and concentrations for various surface-absorbing samples.
机译:建立了光学透明表面吸收固体的连续激光诱导热透镜光谱分析的理论模型。在模型中,样品表示为一组具有一定厚度和吸光率的离散层。用所有层的热通量函数的总和来描述样品中的热光元件。该模型采用简单的数学表达式,可用于稳态和时间分辨热透镜实验。实现了实验和理论上预测的信号相关性的良好一致性。该模型已针对体积吸收样品(彩色光学眼镜)进行了验证,并成功用于计算各种表面吸收样品的吸光度和浓度。

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