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Proceedings Paper

AFIRE: fiber Raman laser for laser guide star adaptive optics
Author(s): D. Bonaccini Calia; W. Hackenberg; S. Chernikov; Y. Feng; L. Taylor
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Paper Abstract

Future adaptive optics systems will benefit from multiple sodium laser guide stars in achieving satisfactory sky coverage in combination with uniform and high-Strehl correction over a large field of view. For this purpose ESO is developing with industry AFIRE, a turn-key, rack-mounted 589-nm laser source based on a fiber Raman laser. The fiber laser will deliver the beam directly at the projector telescope. The required output power is in the order of 10 W in air per sodium laser guide star, in a diffraction-limited beam and with a bandwidth of < 2 GHz. This paper presents the design and first demonstration results obtained with the AFIRE breadboard. 4.2W CW at 589nm have so far been achieved with a ~20% SHG conversion efficiency.

Paper Details

Date Published: 28 June 2006
PDF: 12 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62721M (28 June 2006); doi: 10.1117/12.674487
Show Author Affiliations
D. Bonaccini Calia, European Southern Observatory (Germany)
W. Hackenberg, European Southern Observatory (Germany)
S. Chernikov, Volius Ltd. (United Kingdom)
Y. Feng, European Southern Observatory (Germany)
L. Taylor, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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