Voigt lineshape

Fig. 1. The Voigt lineshape is plotted for three different values of the Voigt parameter, a - WL/WG, namely a = 0 (Gaussian, dotted line), a = 1 (solid line, with the component Lorentzian and Gaussian lineshapes having an equal width given by tl/(, W 0.6107 H-) and a x (Lorentzian, dashed line). The frequency scale is given in units of the FWHM of the Voigt lineshape, W.

The NMR lineshapes obtained in MRS are often assumed to have a Voigt lineshape.32,79 The Voigt lineshape, however, does not have a simple analytical form. None the less, as shown earlier, the Voigt lineshape can conveniently be approximated as a linear sum of Gaussian and Lorentzian lineshapes.33,78... 

Figure 2 SF intensity spectra of J00% Cifrmodified fused silica surfaces taken with ssp polarization (s-polarized SF, s-polarized visible light and p-polarized infrared light). A (A) water, ( ) isooctane, and ( ) air, B acetonitrile. The solid lines are fits to the data using Voigt lineshapes.

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