Feasibility experiment for sodium-layer laser guide stars at the Lawrence Livermore National Laboratory

Details Feasibility experiment for sodium-layer laser guide stars at the Lawrence Livermore National Laboratory Feasibility experiment for sodium-layer laser guide stars at the Lawrence Livermore National Laboratory

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lgsa.work...10m&link_type=abstract

Presented at the Laser Guide Star Adaptive Optics Workshop, Albuquerque, NM, 10-12 Mar. 1992

Physics

Optics

Adaptive Optics, Focusing, Laser Guidance, Metal Vapor Lasers, Telescopes, Astronomy, Dye Lasers, Feasibility Analysis, Feedback Control, Laser Beams, Sodium

Scientific paper

We are developing a feasibility experiment to demonstrate closed-loop adaptive optics using a sodium-layer laser guide star. We will use the copper-vapor-pumped dye lasers developed for LLNL's Atomic Vapor Laser Isotope Separation Program to create the laser guide star. Closed-loop adaptive corrections will be accomplished using a 69-subaperture adaptive optics system on a one-meter telescope at LLNL. The laser beam will be projected upwards from a beam director approximately 5 meters away from the main telescope, and is expected to form a spot about a meter in diameter at the atmospheric sodium layer (at an altitude of 95 km). Details of the adaptive optics components and an analysis of the expected performance will be presented in companion papers for this Workshop. Here we summarize the overall architecture and system objectives. The long-term goal of our effort is to develop laser guide stars and adaptive optics for large astronomical telescopes.

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