Large Exit Windows For High Power Beam Directors

Darryl E. Weidler

doi:10.1117/12.951356

11 July 1989 Large Exit Windows For High Power Beam Directors

Darryl E. Weidler

Proceedings Volume 1047, Mirrors and Windows for High Power/High Energy Laser Systems; (1989) https://doi.org/10.1117/12.951356
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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 1.tm 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.

Citation Download Citation

Darryl E. Weidler "Large Exit Windows For High Power Beam Directors", Proc. SPIE 1047, Mirrors and Windows for High Power/High Energy Laser Systems, (11 July 1989); https://doi.org/10.1117/12.951356

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