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Proceedings Paper

PM fiber lasers at 589nm: a 20W transportable laser system for LGS return flux studies
Author(s): 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
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Paper 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.

Paper Details

Date Published: 28 July 2010
PDF: 12 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77361U (28 July 2010); doi: 10.1117/12.857991
Show Author Affiliations
Domenico Bonaccini Calia, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Axel Friedenauer, TOPTICA Photonics AG (Germany)
Vladimir Protopopov, MPB Communications Inc. (Canada)
I. Guidolin, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Luke R. Taylor, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Vladimir I. Karpov, MPB Communications Inc. (Canada)
Manfred Hager, TOPTICA Photonics AG (Germany)
Wallace R. L. Clements, MPB Communications Inc. (Canada)
Bernhard Ernstberger, TOPTICA Photonics AG (Germany)
Steffan Lewis, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Wilhelm G. Kaenders, TOPTICA Photonics AG (Germany)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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