Polarization-Division Beamsplitters with KBr and KRS-5 Substrates for Fourier Transform Infrared Spectroscopy

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Polarization-division beamsplitters with KBr and KRS-5 substrates were constructed and evaluated for their performance in Fourier transform infrared spectroscopy. It is found that the beamsplitter with a KRS-5 substrate is not practically useful; the one with a KBr substrate has good potential, although its current performance is significantly poorer than the performance of a beamsplitter with a BaF2 substrate. Representative spectra obtained with a KBr beamsplitter are presented.

Keywords: FT-IR; Infrared dichroism; Interferometry; Polarization modulation

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702963906672

Affiliations: 1: Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235 2: ATI Instruments, 1001 Fourier Drive, Madison, Wisconsin 53717

Publication date: January 1, 1996

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