Comparison between active- and passive-cavity interferometers

Details Comparison between active- and passive-cavity interferometers Comparison between active- and passive-cavity interferometers

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrva..33.3181a&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 33, May 1986, p. 3181-3184.

Physics

General Physics

1

Displacement Measurement, Fabry-Perot Interferometers, Gravitational Wave Antennas, Radiation Measurement, Cavity Resonators, Delay Lines, Mirrors, Noise Generators

Scientific paper

The use of active and passive cavity interferometers for displacement sensing in broadband gravitational radiation detectors is discussed. It is shown that, for identical resonators and stored fields of equal intensity, active and passive cavity interferometers are of the same sensitivity for gravitational radiation detection. High-quality optics, high gain amplifying medium, and short resonators are best for active cavity systems. For practical reasons, only a limited amount of optical power can now be injected into passive cavity systems; this is compensated for by an increase in arm length.

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