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Lens collimation and testing using a Twyman-Green interferometer with a self-pumped phase-conjugating mirrorOrdinarily Twyman-Green interferometers are employed testing optical elements. In a modification of the basic configuration, the ordinary mirror in the test arm is replaced with a self-pumped phase-conjugating mirror using a barium titanate crystal. It is shown that, with a redefinition of components, the new configuration permits retention and improvement of the optical element testing function while simultaneously serving as a sensitive test for collimation. The optical path difference resulting from the double pass in the original Twyman-Green interferometer approximately equals that of the single pass and phase conjugation in the modification.
Document ID
19860044542
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Howes, W. L.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
February 15, 1986
Publication Information
Publication: Applied Optics
Volume: 25
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
86A29280
Distribution Limits
Public
Copyright
Other

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