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Applied Optics

Applied Optics


  • Vol. 37, Iss. 27 — Sep. 20, 1998
  • pp: 6544–6549

Detector nonlinearity correction scheme for the LPMA balloonborne Fourier transform spectrometer

Pascal Jeseck, Claude Camy-Peyret, Sébastien Payan, and Toufic Hawat  »View Author Affiliations

Applied Optics, Vol. 37, Issue 27, pp. 6544-6549 (1998)

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The Limb Profile Monitor of the Atmosphere (LPMA) instrument is a Fourier transform spectrometer designed to record stratospheric (and in some cases tropospheric) absorption spectra from a balloon gondola. This spectrometer operates with two-detector output optics (photoconductive HgCdTe and photovoltaic InSb, liquid-nitrogen cooled). The response of the HgCdTe detector becomes nonlinear for high photon fluxes, which is the case for solar occultation. We have designed a processing scheme, based on the minimization of out-of-optical-band spectral artifacts, to correct for the effect of nonlinearity in the useful spectral range. The method is explained, and sample results are presented for spectra recorded in different balloon flight conditions and with two different HgCdTe detectors.

© 1998 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(040.3060) Detectors : Infrared
(300.0300) Spectroscopy : Spectroscopy
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms

Original Manuscript: October 27, 1997
Revised Manuscript: April 13, 1998
Published: September 20, 1998

Pascal Jeseck, Claude Camy-Peyret, Sébastien Payan, and Toufic Hawat, "Detector nonlinearity correction scheme for the LPMA balloonborne Fourier transform spectrometer," Appl. Opt. 37, 6544-6549 (1998)

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