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Diode-seeded fiber-based sodium laser guide stars ready for deployment

Wilhelm Kaenders,Axel Friedenauer,V I Karpov,V N Protopopov,Wallace R L Clements,Luke R Taylor, Yue Feng,Domenico Bonaccini Calia,Bernhard Ernstberger

ADAPTIVE OPTICS SYSTEMS II（2010）

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Abstract
The quest of the astronomical instrumentation community for high-power, narrow-band CW laser guide stars (LGS) has been a challenge to the laser community for more than two decades now. Only recently, a new generation of rugged laser system developments has started to provide the laser infrastructure for the next generation earth-bound telescopes. We report on the system design of four 20W CW diode-seeded fiber-amplified laser guide star for deployment at the VLT in 2013.
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Key words
laser guide stars,diode laser,fiber lasers,next generation telescope,adaptive optics,sodium return flux
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