Discussion on the full width at half maximum (FWHM) of the Voigt spectral line

作者：He, Jian^*; Zhang, Qingguo

来源：Optik, 2013, 124(21): 5245-5247.

DOI：10.1016/j.ijleo.2013.03.173

• FWHM
• Voigt profile
• Gaussian profile
• Lorentzian profile
• Taylor series

Using the accurate Voigt profile we obtained by Fourier transform method and the Taylor series, we obtain a simple relationship of the FWHM of the Voigt profile with the Gaussian and Lorentzian profiles. The curves of the relationship of the FWHM of the three profiles are drawn. Though further discussion, we find the relationship of the ratio of the FWHM of Voigt profile with Gaussian profile and that of Lorentzian profile and Gaussian profile is one-fourth ellipse. This method is convenient and accurate for actual application using the Voigt profile.

• 出版日期2013
• 单位河南大学