Automatic beam alignment for the mode-cleaner cavities of GEO 600

被引：3
作者：
Grote, H
Heinzel, G
Freise, A
Gossler, S
Willke, B
Lück, H
Ward, H
Casey, MM
Strain, KA
Robertson, D
Hough, J
Danzmann, K
机构：
[1] Leibniz Univ Hannover, Inst Atom & Mol Phys, D-30167 Hannover, Germany
[2] Max Planck Inst Gravitat Phys, Teilinst Hannover, D-30167 Hannover, Germany
[3] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
来源：
APPLIED OPTICS | 2004年 / 43卷 / 09期
关键词：
D O I：
10.1364/AO.43.001938
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The automatic alignment system for the two suspended, triangular mode-cleaner cavities of the gravitational wave detector GEO 600 has been in continuous operation since the spring of 2001. A total of 20 angular degrees of freedom are controlled by feedback loops with almost no manual alignment having been required since installation. Error signals for the eight most important degrees of freedom are obtained with the differential wave-front sensing technique. We describe the sensing system, the control topology, and the performance of the automatic alignment system. A continuous locking stretch of more than 120 h has been achieved. (C) 2004 Optical Society of America.
引用
收藏
页码：1938 / 1945
页数：8
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