Stabilized lasers for advanced gravitational wave detectors

Details Stabilized lasers for advanced gravitational wave detectors Stabilized lasers for advanced gravitational wave detectors

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cqgra..25k4040w&link_type=abstract

Classical and Quantum Gravity, Volume 25, Issue 11, pp. 114040 (2008).

Physics

19

Scientific paper

Second generation gravitational wave detectors require high power lasers with more than 100 W of output power and with very low temporal and spatial fluctuations. To achieve the demanding stability levels required, low noise techniques and adequate control actuators have to be part of the high power laser design. In addition feedback control and passive noise filtering is used to reduce the fluctuations in the so-called prestabilized laser system (PSL). In this paper, we discuss the design of a 200 W PSL which is under development for the Advanced LIGO gravitational wave detector and will present the first results. The PSL noise requirements for advanced gravitational wave detectors will be discussed in general and the stabilization scheme proposed for the Advanced LIGO PSL will be described.

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