@inproceedings{eccf854d9eab4683adfb7c09ae20caaa,
title = "The performance of the laser guide star system for the Subaru Telescope",
abstract = "We are developing a laser guide star (LGS) system for the 188-elements Adaptive Optics system (A0188) of the Subaru telescope. In this paper we describe the results of the performance tests of the LGS system. The beam that excites sodium atoms at 90 km altitude of the LGS is generated by the following sequence. The source of the beam is a quasi-CW mode locked sum-frequency generating 589 nm laser. This laser beam propagates through a diagnostics system for measuring the wavelength and the beam quality. Then it couples into a solidcore photonic crystal fiber cable for transmitting the beam to a telescope for launching the beam (LLT: Laser Launching Telescope). The output beam from this fiber cable is collimated by the optics mounted on the LLT. This collimated beam is expanded by the LLT and launched into the sky. We executed several engineering observations of the LGS system from 2009 for confirming the performance of all the components in this sequence. We also report the quality of the LGS.",
keywords = "Adaptive optics, Laser guide star, Sodium laser",
author = "Yoshihiko Saito and Yutaka Hayano and Meguru Ito and Yosuke Minowa and Sebastian Egner and Shin Oya and Makoto Watanabe and Masayuki Hattori and Vincent Garrei and Kazuyuki Akagawa and Olivier Guyon and Stephen Colley and Taras Golota and Norihito Saito and Akira Takazawa and Mayumi Ito and Hideki Takami and Satoshi Wada and Masanori Iye",
year = "2010",
doi = "10.1117/12.856484",
language = "English (US)",
isbn = "9780819482266",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
number = "PART 1",
booktitle = "Adaptive Optics Systems II",
edition = "PART 1",
note = "Adaptive Optics Systems II ; Conference date: 27-06-2010 Through 02-07-2010",
}