Character of the Change in the Voigt Contour of a Weak Absorption Line in a Laser Spectrometer with an Analytical Cavity
摘要
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.