The modecleaner system and suspension aspects of GEO 600

Details The modecleaner system and suspension aspects of GEO 600 The modecleaner system and suspension aspects of GEO 600

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cqgra..19.1835g&link_type=abstract

Classical and Quantum Gravity, Volume 19, Issue 7, pp. 1835-1842 (2002).

Computer Science

Performance

16

Scientific paper

GEO 600 uses two 8 m triangular ring cavities as a modecleaner system for the stabilization of the laser. To isolate the cavities with respect to the seismic noise the optical components are suspended as double pendulums. The resonances of these pendulums are damped by a local-control loop via magnet-coil actuators acting on the intermediate masses. The suspension scheme and the measured key data (i.e. finesse, linewidth, visibility, throughput and in-lock durations of the cavities, as well as the isolation performance and the resulting frequency stability) of the modecleaner system will be given in this paper. Furthermore an overview of the GEO 600 interferometer suspension will be given.

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