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Development of a multistage laser frequency stabilization for an interferometric gravitational-wave detector

Nagano, Shigeo and Barton, Mark A. (2003) Development of a multistage laser frequency stabilization for an interferometric gravitational-wave detector. Review of Scientific Instruments, 74 (9). pp. 4176-4183. ISSN 0034-6748.

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Laser frequency stabilization is essential for interferometric gravitational-wave detectors to attain their target sensitivity. We have designed a multistage laser frequency stabilization system which has been applied in the development of the TAMA 300 gravitational-wave detector in Japan. The control topology consisting of two cascaded loops were employed to secure high feedback gain and reliable detector operation and thus allow the best frequency stability and uninterrupted long-term observation. We achieved simultaneously a frequency stability of 5 × 10^(−5) Hz/√HZ , and a common-mode rejection ratio (which reduces the coupling of frequency noise to spurious signals in the detector) of 37 dB. The developed system enabled us to operate TAMA 300 with sufficient sensitivity and stability that it had the potential to register gravitational-wave events. The system was confirmed to be suitable for a gravitational-wave detector from the observation run of TAMA 300.

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Additional Information:© 2003 American Institute of Physics. Received 27 March 2003; accepted 3 June 2003. The TAMA project is supported by a Grant-in-Aid for Creative Basic Research of the Ministry of Education, Culture, Sports, Science and Technology.
Funding AgencyGrant Number
Ministry of Education, Culture, Sports, Science and TechnologyUNSPECIFIED
Subject Keywords:gravitational wave detectors, Fabry-Perot interferometers, Michelson interferometers, laser frequency stability, optical control, laser feedback, laser noise
Classification Code:PACS: 04.80.Nn; 07.60.Ly; 42.60.By; 42.60.Da; 07.05.Dz
Record Number:CaltechAUTHORS:20111025-093313572
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27403
Deposited By: Tony Diaz
Deposited On:26 Oct 2011 16:35
Last Modified:26 Dec 2012 14:19

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