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Proceedings Paper

Absolute piston phasing of segmented-mirror optical systems using depth-modulated white-light interferometry
Author(s): Richard F. Horton; Ernest E. Huber; Leonas A. Bernotas; L. G. B. Yee; A. V. Roberts; J. M. Norton; Edward G. Corbett; Ronald A. Humphreys
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Paper Abstract

A method of phasing segmented-mirror systems using a new form of white-light radial-shear interferometer is presented. The device was used in a laboratory proof-of-concept demonstration to phase two elements of an annularly segmented mirror. This co-phasing was achieved both manually and with low-bandwidth closed-loop servo control using a new and perhaps simpler modulation technique than that proposed previously. The configuration used in the demonstration is described, together with some initial results.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19263
Show Author Affiliations
Richard F. Horton, Lincoln Lab./MIT (United States)
Ernest E. Huber, Lincoln Lab./MIT (United States)
Leonas A. Bernotas, Lincoln Lab./MIT (United States)
L. G. B. Yee, Lincoln Lab./MIT (United States)
A. V. Roberts, Lincoln Lab./MIT (United States)
J. M. Norton, Lincoln Lab./MIT (United States)
Edward G. Corbett, Lincoln Lab./MIT (United States)
Ronald A. Humphreys, Lincoln Lab./MIT (United Kingdom)

Published in SPIE Proceedings Vol. 1236:
Advanced Technology Optical Telescopes IV
Lawrence D. Barr, Editor(s)

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