Reexamination of the wavelength modulation photoresponse spectroscopies

Abstract
Reexamination of the wavelength modulation photoresponse spectroscopies showed that the line shapes obtained by these methods are subject to distortions from several sources of spurious interference spectra. A comparison is made between the wavelength modulation absorption/reflection and the wavelength modulation photoresponse spectroscopies; it is concluded that the former are the most suitable modulation techniques for studies requiring unambiguous line shapes.