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Published July 27, 2016 | Version Published
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The progress of TMT Laser Guide Star Facility

Creators

  • 1. ROR icon Institute of Optics and Electronics

Contributors

Abstract

The Laser Guide Star Facility (LGSF) is responsible for generating the artificial laser guide stars required by the TMT Laser Guide Star (LGS) AO systems. The LGSF uses multiple sodium lasers to generate and project several LGS asterisms from a laser launch telescope located behind the TMT secondary mirror. The LGSF includes 3 main subsystems: (1) the laser system, (2) the beam transfer optics (BTO) system, (3) the associated laser safety system. At present, the LGSF is in the preliminary design phase. During this phase, the laser launch telescope trade study, Beam transfer optical path trade study are compared carefully, and some critical components prototypes have been carried out to verify the requirements, such as the polarization status control and test, the Fast Steer Mirror (FSM) prototype test.

Additional Information

© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).

Attached Files

Published - 99095Q.pdf

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Additional details

Identifiers

Eprint ID
72539
Resolver ID
CaltechAUTHORS:20161205-070823387

Dates

Created
2016-12-07
Created from EPrint's datestamp field
Updated
2021-11-11
Created from EPrint's last_modified field

Caltech Custom Metadata

Series Name
Proceedings of SPIE
Series Volume or Issue Number
9909