Pump laser for dye amplifier in artificial laser guide star system of telescope with adaptive optics

S. A. Babin; V. G. Goldort; Y. I. Krasnikov; V. V. Potapov; M. A. Rybakov

doi:10.1117/12.464169

30 April 2002 Pump laser for dye amplifier in artificial laser guide star system of telescope with adaptive optics

S. A. Babin, V. G. Goldort, Y. I. Krasnikov, V. V. Potapov, M. A. Rybakov

Proceedings Volume 4644, Seventh International Conference on Laser and Laser-Information Technologies; (2002) https://doi.org/10.1117/12.464169
Event: Seventh International Conference on Laser and Laser Information Technologies, 2001, Vladimir, Suzdal, Russian Federation

Abstract

Artificial laser guide star (LGS) is usually created by excitation of sodium atoms in the natural layer at 90 km with a yellow laser beam at 589.2 nm. Such a spot-like source is used for guiding the adaptive optics system of telescopes, that allows to improve greatly the quality of images of real astronomic objects by correcting the wavefront distortions induced by atmospheric turbulence. In frames of ALFA project a single-frequency yellow source of 3-4 W output power has been developed and is already used for LGS excitation. In this paper we report on the pump laser for dye amplifier developed for the Max Planck Institute of Extraterrestrial Physics in Garching, Germany, that will be applied for substantial enhancement of the output power in the system. The developed argon laser provides high angular stability and beam quality by means of active cavity alignment at 70 W output level, that has no analogues. Basic principles and device design are described.

Citation Download Citation

S. A. Babin, V. G. Goldort, Y. I. Krasnikov, V. V. Potapov, and M. A. Rybakov "Pump laser for dye amplifier in artificial laser guide star system of telescope with adaptive optics", Proc. SPIE 4644, Seventh International Conference on Laser and Laser-Information Technologies, (30 April 2002); https://doi.org/10.1117/12.464169

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