Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 54,
  • Issue 12,
  • pp. 1743-1750
  • (2000)

Effect of Focal Plane Array Cold Shield Aperture Size on Fourier Transform Infrared Micro-imaging Spectrometer Performance

Not Accessible

Your library or personal account may give you access

Abstract

Micro-imaging spectrometers incorporating focal plane array (FPA) detection require careful demarcation of cold shield aperture size for both optimal performance and prevention of errors. This study examines the effects of changing the diameter of the cold shield aperture on the intensity and spatial homogeneity of the incident radiation. A uniform polystyrene film was repeatedly imaged by using cold shields of varying aperture sizes. It is shown that a smaller than optimal aperture size leads to image edge clipping, resulting in an inefficient use of the array, lower overall signal, spectral distortions, and higher noise characteristics. Use of an aperture size larger than required causes a decrease in the effective dynamic range of measurements, resulting in higher noise levels. The advantages and necessity of optimizing imaging spectrometer performance by employing a cold shield with an appropriately sized aperture are discussed.

PDF Article
More Like This
Angular acceptance analysis of an infrared focal plane array with a built-in stationary Fourier transform spectrometer

Frédéric Gillard, Yann Ferrec, Nicolas Guérineau, Sylvain Rommeluère, Jean Taboury, and Pierre Chavel
J. Opt. Soc. Am. A 29(6) 936-944 (2012)

Infrared focal plane array with a built-in stationary Fourier-transform spectrometer: basic concepts

Sylvain Rommeluère, Nicolas Guérineau, Riad Haidar, Joël Deschamps, Eric De Borniol, Alain Million, Jean-Paul Chamonal, and Gérard Destefanis
Opt. Lett. 33(10) 1062-1064 (2008)

Mercury cadmium telluride focal-plane array detection for mid-infrared Fourier-transform spectroscopic imaging

L. H. Kidder, I. W. Levin, E. Neil Lewis, V. D. Kleiman, and E. J. Heilweil
Opt. Lett. 22(10) 742-744 (1997)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved