A precise system for measuring weak optoacoustic perturbationsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The practical implementation of a high-sensitivity measuring system based on an extended Fabry-Perot interferometer, which reacts to small variations of its optical length, is presented. The attained sensitivity is limited by the spectral noise density of optical pumping, which is lower than the resonance spectral density of thermal fluctuations of the interferometer base by one order of magnitude. Structurally, the system is an optoacoustic gravitational antenna without cooling (OGRAN). Extrapolating the results obtained for a pilot model to a large-size variant of the setup fo recasts a sensitivity sufficient for searching for gravitational bursts in the Galaxy and its nearest vicinity (within 100 kpc).