Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-01-17
Phys.Rev. D59 (1999) 024001
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
RevTeX, 8 pages plus 2 postscript figures; widely revised text; noise analisys enhanced. Approved for publication in Phys. Rev
Scientific paper
10.1103/PhysRevD.59.024001
The interaction of a gravitational wave with a system made of an RLC circuit forming one end of a mechanical harmonic oscillator is investigated. We show that, in some configurations, the coherent interaction of the wave with both the mechanical oscillator and the RLC circuit gives rise to a mechanical quality factor increase of the electromagnetic signal. When this system is used as an amplifier of gravitational periodic signals in the frequency range 50-1000 Hz, at ultracryogenic temperatures and for sufficiently long integration times (up to 4 months), a sensitivity of 10^(-24)-10^(-27) on the amplitude of the metric could be achieved when thermal noise, shot noise and amplifier back--action are considered.
Fortini Pierluigi
Montanari Enrico
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