Interferometric phase measurement using pyroelectric vidicons

Infrared interferometry is used for testing both infrared materials that are opaque in the visible and optical surfaces still in the ground-glass condition. A pyroelectric vidicon is used to detect infrared interference fringes, which can be phase shifted, allowing precise measurements of the infrar...

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Bibliographic Details
Published in:Applied optics (2004) 1987-03, Vol.26 (6), p.1127-1136
Main Authors: Stahl, H P, Koliopoulos, C L
Format: Article
Language:English
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Summary:Infrared interferometry is used for testing both infrared materials that are opaque in the visible and optical surfaces still in the ground-glass condition. A pyroelectric vidicon is used to detect infrared interference fringes, which can be phase shifted, allowing precise measurements of the infrared wavefront. This paper discusses the pyroelectric vidicon as a detector of infrared interference fringes and the limitations it presents when used to obtain accurate phase-shifted measurements of an infrared optical wavefront.
ISSN:1559-128X
DOI:10.1364/AO.26.001127