AFIRE: fiber Raman laser for laser guide star adaptive optics

D. Bonaccini Calia; W. Hackenberg; S. Chernikov; Y. Feng; L. Taylor

doi:10.1117/12.674487

28 June 2006 AFIRE: fiber Raman laser for laser guide star adaptive optics

D. Bonaccini Calia, W. Hackenberg, S. Chernikov, Y. Feng, L. Taylor

Proceedings Volume 6272, Advances in Adaptive Optics II; 62721M (2006) https://doi.org/10.1117/12.674487
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

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.

Citation Download Citation

D. Bonaccini Calia, W. Hackenberg, S. Chernikov, Y. Feng, and L. Taylor "AFIRE: fiber Raman laser for laser guide star adaptive optics", Proc. SPIE 6272, Advances in Adaptive Optics II, 62721M (28 June 2006); https://doi.org/10.1117/12.674487

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