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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 25 — Sep. 1, 2012
  • pp: 6259–6267

Tunable acousto-optic spectral imager for atmospheric composition measurements in the visible spectral domain

Emmanuel Dekemper, Nicolas Loodts, Bert Van Opstal, Jeroen Maes, Filip Vanhellemont, Nina Mateshvili, Ghislain Franssens, Didier Pieroux, Christine Bingen, Charles Robert, Lieve De Vos, Ludovic Aballea, and Didier Fussen  »View Author Affiliations

Applied Optics, Vol. 51, Issue 25, pp. 6259-6267 (2012)

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We describe a new spectral imaging instrument using a TeO2 acousto-optical tunable filter (AOTF) operating in the visible domain (450–900 nm). It allows for fast (1 second), monochromatic (FWHM ranges from 0.6 nm at 450 nm to 3.5 nm at 800 nm) picture acquisition with good spatial resolution. This instrument was designed as a breadboard of the visible channel of a new satellite-borne atmospheric limb spectral imager, named the Atmospheric Limb Tracker for the Investigation of the Upcoming Stratosphere (ALTIUS), that is currently being developed. We tested its remote sensing capabilities by observing the dense, turbulent plume exhausted by a waste incinerator stack at two wavelengths sensitive to NO2. An average value of 6.0±0.4×1017moleculescm2 has been obtained for the NO2 slant column density within the plume, close to the stack outlet. Although this result was obtained with a rather low accuracy, it demonstrates the potential of spectral imaging by using AOTFs in remote sensing.

© 2012 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(100.0100) Image processing : Image processing
(230.1040) Optical devices : Acousto-optical devices
(280.1120) Remote sensing and sensors : Air pollution monitoring
(110.4234) Imaging systems : Multispectral and hyperspectral imaging
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: May 25, 2012
Revised Manuscript: July 5, 2012
Manuscript Accepted: July 6, 2012
Published: August 31, 2012

Emmanuel Dekemper, Nicolas Loodts, Bert Van Opstal, Jeroen Maes, Filip Vanhellemont, Nina Mateshvili, Ghislain Franssens, Didier Pieroux, Christine Bingen, Charles Robert, Lieve De Vos, Ludovic Aballea, and Didier Fussen, "Tunable acousto-optic spectral imager for atmospheric composition measurements in the visible spectral domain," Appl. Opt. 51, 6259-6267 (2012)

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