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Optothermal detection with suppressed background signal

Authors
Journal
Infrared Physics
0020-0891
Publisher
Elsevier
Publication Date
Volume
31
Issue
5
Identifiers
DOI: 10.1016/0020-0891(91)90016-9

Abstract

Abstract A method to significantly improve the sensitivity of optothermal detection is proposed and 100 times sensitivity increase has been obtained due to background signal suppression by reflective coating of the pyroelectric element surface, and by inserting diaphragms into the optothermal cell.

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