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astro-ph1999
The ALFA Laser: Beam Relay and Control System
T. Ott, W. Hackenberg, S. Rabien +2
The ALFA laser subsystem uses a 4 watt continuous wave laser beam to produce an artificial guide star in the mesospheric sodium layer as a reference for wavefront sensing. In this…
astro-ph1999
The ALFA Laser and Analysis Tools
S. Rabien, T. Ott, W. Hackenberg +4
The optimal performance of adaptive optics systems can only be maintained if the wavefront reference is bright and compact. Experience has shown that both of these important criter…
astro-ph1999
The ALFA laser guide star: Operation and Results
R. Davies, A. Eckart, W. Hackenberg +4
The importance of laser guide stars to the practical usefulness of adaptive optics cannot be understated, and yet there are very few working systems. This contribution discusses th…