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Proceedings Paper

Large Exit Windows For High Power Beam Directors
Author(s): Darryl E. Weidler
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Paper Abstract

Feasibility of a 3.5 m diameter, segmented, solid, exit window for a high-power laser beam director was investigated. Effects of laser heating, gravity, and differential pressure loads were analyzed. A design was found for which structural deflections and stresses were within allowable limits. The time-varying optical aberrations introduced by the window were less than 0.01 rms after removal of bias, tilt, and focus aberrations for two window materials. Static aberrations caused by differences in optical thickness of the finished window panels were found to be relatively large and potentially uncorrectable if common optical finishing tolerances were assumed. Three potential solutions for accommodating the optical thickness variations are discussed.

Paper Details

Date Published: 11 July 1989
PDF: 9 pages
Proc. SPIE 1047, Mirrors and Windows for High Power/High Energy Laser Systems, (11 July 1989); doi: 10.1117/12.951356
Show Author Affiliations
Darryl E. Weidler, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1047:
Mirrors and Windows for High Power/High Energy Laser Systems
Claude A. Klein, Editor(s)

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