Phase correction in piezoelectric photoacoustic Fourier transform infrared spectroscopy of mica

S. L. Zhang; Kirk H. Michaelian; James A. Burt

doi:10.1117/1.601203

1 February 1997 Phase correction in piezoelectric photoacoustic Fourier transform infrared spectroscopy of mica

S. L. Zhang, Kirk H. Michaelian, James A. Burt

Optical Engineering, Vol. 36, Issue 2, (February 1997). https://doi.org/10.1117/1.601203

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.

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S. L. Zhang, Kirk H. Michaelian, and James A. Burt "Phase correction in piezoelectric photoacoustic Fourier transform infrared spectroscopy of mica," Optical Engineering 36(2), (1 February 1997). https://doi.org/10.1117/1.601203

Published: 1 February 1997

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