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Optical Engineering

Phase correction in piezoelectric photoacoustic Fourier transform infrared spectroscopy of mica
Author(s): S. L. Zhang; Kirk H. Michaelian; James A. Burt
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Paper Abstract

Piezoelectric photoacoustic IR spectra of mica are obtained using a Fourier transform IR spectrometer and lead zirconate titanate (PZT) as a detector. The spectra exhibit negative intensities and transmission like bands, instead of more conventional absorption bands generally observed with a gas-microphone cell. Correct spectra of mica/PZT are calculated only when the interferogram phase is constrained to the first and fourth quadrants, similar to the case in differential spectroscopy where negative intensities occur.

Paper Details

Date Published: 1 February 1997
PDF: 5 pages
Opt. Eng. 36(2) doi: 10.1117/1.601203
Published in: Optical Engineering Volume 36, Issue 2
Show Author Affiliations
S. L. Zhang, Natural Resources Canada (Canada)
Kirk H. Michaelian, Energy, Mines and Resources Canada (Canada)
James A. Burt, York Univ. (Canada)

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