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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 21 — Jul. 20, 2008
  • pp: 3731–3736

Absolute linearity measurements on a gold-black-coated deuterated L-alanine-doped triglycine sulfate pyroelectric detector

E. Theocharous  »View Author Affiliations


Applied Optics, Vol. 47, Issue 21, pp. 3731-3736 (2008)
http://dx.doi.org/10.1364/AO.47.003731


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Abstract

The nonlinearity characteristics of a commercially available deuterated L-alanine-doped triglycine sulfate (DLATGS) pyroelectric detector were experimentally investigated at high levels of illumination using the National Physical Laboratory detector linearity characterization facility. The detector was shown to exhibit a superlinear response at high levels of illumination. Moreover, the linearity factor was shown to depend on the area of the spot on the detector active area being illuminated, i.e., the incident irradiance. Possible reasons for the observed behavior are proposed and discussed. The temperature coefficient of the response of the DLATGS pyroelectric detector was measured and found to be higher than + 2.5 % ° C 1 . This large and positive temperature coefficient of response is the most likely cause of the superlinear behavior of the DLATGS pyroelectric detector.

© 2008 Optical Society of America

OCIS Codes
(040.3060) Detectors : Infrared
(040.5160) Detectors : Photodetectors
(120.5630) Instrumentation, measurement, and metrology : Radiometry

ToC Category:
Detectors

History
Original Manuscript: February 25, 2008
Revised Manuscript: April 30, 2008
Manuscript Accepted: June 12, 2008
Published: July 11, 2008

Citation
E. Theocharous, "Absolute linearity measurements on a gold-black-coated deuterated L-alanine-doped triglycine sulfate pyroelectric detector," Appl. Opt. 47, 3731-3736 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-21-3731

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