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Proceedings Paper

Attenuation Screens In Interferometer Cavities
Author(s): Michael Pate; Murty V Mantravadi
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Paper Abstract

Attenuation screens of different types are used frequently in interferometer cavities when one wishes to control the intensity of one arm with respect to another arm, to achieve good fringe contrast. A study of attenuation screens for use in interferometer cavities was performed to determine the optimum attenuation screen mesh frequency, orientation, and cavity location, theoretically and experimentally. A commercially avaliable Fizeau type interferometer was used for the investigations. Screen frequencies of 500, 400, 325, 230, and 100 wires per inch were used. Experimental results with these screens of different test configurations are presented. The durable, inexpensive, and versatile attenuation screen provides an excellent alternative to coated or metallized pellicles used as attenuation filters.

Paper Details

Date Published: 29 January 1989
PDF: 8 pages
Proc. SPIE 0966, Advances in Fabrication and Metrology for Optics and Large Optics, (29 January 1989); doi: 10.1117/12.948070
Show Author Affiliations
Michael Pate, Northrop Electro Mechanical Division (United States)
Murty V Mantravadi, Northrop Electro Mechanical Division (United States)

Published in SPIE Proceedings Vol. 0966:
Advances in Fabrication and Metrology for Optics and Large Optics
Jones B. Arnold; Robert E. Parks, Editor(s)

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