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Proceedings Paper

Comparison of pump-laser characteristics for producing a mesospheric sodium guidestar for adaptive optical systems on large-aperture telescopes
Author(s): John M. Telle; Peter W. Milonni; Paul D. Hillman
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Paper Abstract

We compare the effectiveness of various laser systems for producing a sodium guidestar in the mesosphere for large aperture telescopes. We discuss the requirements for two applications at two sites: satellite imaging at the Starfire Optical Range in Albuquerque, New Mexico (SI) and infrared astronomy at the Steward Observatory in Tucson, Arizona (IR). SI may use either a hybrid system employing a rayleigh and a sodium guidestar or a system employing only a sodium guidestar. IR will use only a sodium guide star. Our results are based on analysis and computation that have been compared to 5 different experiments. Parameters included in our comparison are pulse format, polarization, center frequency, and bandwidth. The infrared astronomy application power requirements are low enough that state of the art laser technology can meet them. But the satellite imaging application is problematic. Required powers are sufficiently high that thermo-optic effects in materials can be a problem.

Paper Details

Date Published: 24 June 1998
PDF: 6 pages
Proc. SPIE 3264, High-Power Lasers, (24 June 1998); doi: 10.1117/12.311918
Show Author Affiliations
John M. Telle, Air Force Research Lab. and Univ. of New Mexico (United States)
Peter W. Milonni, Los Alamos National Lab. (United States)
Paul D. Hillman, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 3264:
High-Power Lasers
Santanu Basu, Editor(s)

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