PM fiber lasers at 589nm: a 20W transportable laser system for LGS return flux studies

Domenico Bonaccini Calia; Axel Friedenauer; Vladimir Protopopov; I. Guidolin; Luke R. Taylor; Vladimir I. Karpov; Manfred Hager; Wallace R. L. Clements; Bernhard Ernstberger; Steffan Lewis; Wilhelm G. Kaenders

doi:10.1117/12.857991

27 July 2010 PM fiber lasers at 589nm: a 20W transportable laser system for LGS return flux studies

Domenico Bonaccini Calia, Axel Friedenauer, Vladimir Protopopov, I. Guidolin, Luke R. Taylor, Vladimir I. Karpov, Manfred Hager, Wallace R. L. Clements, Bernhard Ernstberger, Steffan Lewis, Wilhelm G. Kaenders

Author Affiliations +

Proceedings Volume 7736, Adaptive Optics Systems II; 77361U (2010) https://doi.org/10.1117/12.857991
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

In this paper we present the rationale and design of a compact, transportable, modular Laser Guide Star Unit, comprising a 589nm laser mounted on a 300mm launch telescope, to be used in future experiments probing the mesospheric sodium properties and to validate existing LGS return flux simulations. The 20W CW 589nm Laser is based on the ESO developed concept of 589nm lasers based on Raman Fiber Amplifiers, refined and assembled together with industry. It has the same laser architecture as the laser which will be used for the VLT Adaptive Optics Facility. We have added to the 20W CW laser system the capabilities of changing output polarization, D2b emission levels, power level, linewidth and to operate as pulsed laser with amplitude modulation. We focus in this paper on the laser description and test results.

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Domenico Bonaccini Calia, Axel Friedenauer, Vladimir Protopopov, I. Guidolin, Luke R. Taylor, Vladimir I. Karpov, Manfred Hager, Wallace R. L. Clements, Bernhard Ernstberger, Steffan Lewis, and Wilhelm G. Kaenders "PM fiber lasers at 589nm: a 20W transportable laser system for LGS return flux studies", Proc. SPIE 7736, Adaptive Optics Systems II, 77361U (27 July 2010); https://doi.org/10.1117/12.857991

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