The variation in the shape of the Voigt convolution profile in a spectrometer for measuring weak absorption consisting of a frequency tunable laser and an external analytic resonator is studied. It is found how the characteristics of the convolution and the parameters of the resonator affect the reproduction of the shape and width of the absorption line. The effect of absorption saturation on the accuracy of measuring the weak absorption coefficient is discussed.

中文翻译：

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分析腔激光光谱仪弱吸收线Voigt轮廓的变化特征

研究了由频率可调谐激光器和外部分析谐振器组成的用于测量弱吸收的光谱仪中福伊特卷积轮廓形状的变化。发现卷积的特性和谐振器的参数如何影响吸收线的形状和宽度的再现。讨论了吸收饱和度对弱吸收系数测量精度的影响。