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Applied Optics

Applied Optics


  • Vol. 13, Iss. 5 — May. 1, 1974
  • pp: 1171–1178

Influence of Black Coatings on Pyroelectric Detectors

W. R. Blevin and Jon Geist  »View Author Affiliations

Applied Optics, Vol. 13, Issue 5, pp. 1171-1178 (1974)

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The extent to which the thermal capacitance and resistance of a black coating on a pyroelectric detector offset the gain in optical absorptance is investigated. A black paint is shown to be of little value, but a coating of gold–black may increase the detector responsivity for modulation frequencies up to at least several kilohertz. When a coated pyroelectric detector is calibrated electrically, a correction is necessary for the thermal impedance of the black. For gold–blacks of superficial density 2 g m−2, this correction is shown to be less than 2% for frequencies within the 0–100-Hz range.

© 1974 Optical Society of America

Original Manuscript: September 24, 1973
Published: May 1, 1974

W. R. Blevin and Jon Geist, "Influence of Black Coatings on Pyroelectric Detectors," Appl. Opt. 13, 1171-1178 (1974)

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