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A Michelson interferometer with step-and-integrate mirror motion is described for use in Fourier transform photoacoustic spectrometry (FTPAS) at visible wavelengths. An overview of mechanical and software construction is supplied and the advantages of FTPAS are illustrated with a spectrum of powdered erbium oxide at visible wavelengths. The relative merits of step-and-integrate and rapid scan mirror motion for FTPAS are considered.
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Lloyd et al. (1980) studied this question.
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