A combined optico-acoustic gravitational antenna

Details A combined optico-acoustic gravitational antenna A combined optico-acoustic gravitational antenna

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986zhetf..91.1553k&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 91, Nov. 1986, p. 1553-1564. In Russian.

Physics

Optics

3

Acousto-Optics, Antenna Design, Gravitational Wave Antennas, Laser Interferometry, Thermal Noise, Wave Attenuation

Scientific paper

Consideration is given to a gravitational antenna which contains acoustic and optical degrees of freedom. Expressions are obtained for the corresponding parts of a response to structurally different gravitational-wave bursts. A calculation is made of the sensitivity of a long-baseline interferometric antenna upon substitution of free test masses by Weber detectors. The sensitivity level at which this substitution is significant is determined. In particular, it is possible to detect metric perturbations (h) of about 10 to the -18th without deep cooling of the Weber detectors and of about 10 to the -19th to 10 to the -20th upon cooling to helium temperatures. The novel qualities of the combined antenna are discussed.

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