Improvement in the shot noise of a laser interferometer gravitational wave detector by means of an output mode-cleaner

Details Improvement in the shot noise of a laser interferometer gravitational wave detector by means of an output mode-cleaner Improvement in the shot noise of a laser interferometer gravitational wave detector by means of an output mode-cleaner

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cqgra..23.3235b&link_type=abstract

Classical and Quantum Gravity, Volume 23, Issue 9, pp. 3235-3250 (2006).

Computer Science

1

Scientific paper

The sensitivity of a gravitational wave detector based on a laser interferometer is limited by photon shot noise for signals with frequencies above a few hundred hertz. The amplitude of this noise depends on the interferometer fringe contrast. By means of a complete simulation, we show that using a short optical cavity placed at the interferometer output port, the contrast can be significantly improved and the optimal sensitivity recovered. Such an output mode-cleaner has been realized and tested. The adopted design and the results of the tests are presented.

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