Pyroelectric detection of submicrosecond laser pulses between 230 and 530 microm

A continuously tunable far-IR Raman laser has been used to measure the responsivity and the spectral response of uncoated LiTaO(3) pyroelectric detectors between 230 and 530 microm. A striking feature of the spectral response curves is a periodic sequence of maxima and minima, with a modulation fact...

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Bibliographic Details
Published in:Applied optics (2004) 1989-09, Vol.28 (17), p.3647-3651
Main Authors: Zhu, W S, Izatt, J R, Deka, B K
Format: Article
Language:English
Online Access:Get full text
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Summary:A continuously tunable far-IR Raman laser has been used to measure the responsivity and the spectral response of uncoated LiTaO(3) pyroelectric detectors between 230 and 530 microm. A striking feature of the spectral response curves is a periodic sequence of maxima and minima, with a modulation factor of >/=75%. Calculations based on the theory of an absorbing Fabry-Perot etalon indicate that these variations correspond to interference fringes produced by multiple reflections at the surfaces of the LiTaO(3) crystal.
ISSN:1559-128X
DOI:10.1364/AO.28.003647