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Title: Estimate of the ultimate sensitivity of multiple-beam interferometers for displacement measurement

Abstract

The problem of the ultimate sensitivity of a Fabry - Perot interferometer (FPI) used to measure small displacements is considered. A conventional FPI, operating in the transmission mode, is compared with a reflecting interferometer (RI). It is shown that the RI has significant advantages. A detailed analysis is made of a modulation method for obtaining an output signal from the RI. An estimate is obtained of the influence of weak background illumination and of an incorrect choice of the mirror parameters. At the level of the losses currently achieved in mirrors (10{sup -6}). The sensitivity to displacements should be 4 x 10{sup -23} m Hz{sup -1/2} for a light source of 1 W power. It is suggested that the RI can be used in gravitational wave detectors, particularly if they are constructed so that there is a small space between the mirrors. This condition makes it possible to reduce the frequency dispersion, which is nearly excluded in a dispersion-free variant of the interferometer. (laser applications and other topics in quantum electronics)

Authors:
 [1]
  1. Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)
Publication Date:
OSTI Identifier:
21435917
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 28; Journal Issue: 1; Other Information: DOI: 10.1070/QE1998v028n01ABEH001141; Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAMS; DISPERSIONS; FABRY-PEROT INTERFEROMETER; GRAVITATIONAL WAVE DETECTORS; ILLUMINANCE; LASERS; LIGHT SOURCES; MIRRORS; MODULATION; QUANTUM ELECTRONICS; SENSITIVITY; INTERFEROMETERS; MEASURING INSTRUMENTS; RADIATION DETECTORS; RADIATION SOURCES

Citation Formats

Troitskii, Yu V. Estimate of the ultimate sensitivity of multiple-beam interferometers for displacement measurement. United States: N. p., 1998. Web. doi:10.1070/QE1998V028N01ABEH001141.
Troitskii, Yu V. Estimate of the ultimate sensitivity of multiple-beam interferometers for displacement measurement. United States. doi:10.1070/QE1998V028N01ABEH001141.
Troitskii, Yu V. Sat . "Estimate of the ultimate sensitivity of multiple-beam interferometers for displacement measurement". United States. doi:10.1070/QE1998V028N01ABEH001141.
@article{osti_21435917,
title = {Estimate of the ultimate sensitivity of multiple-beam interferometers for displacement measurement},
author = {Troitskii, Yu V},
abstractNote = {The problem of the ultimate sensitivity of a Fabry - Perot interferometer (FPI) used to measure small displacements is considered. A conventional FPI, operating in the transmission mode, is compared with a reflecting interferometer (RI). It is shown that the RI has significant advantages. A detailed analysis is made of a modulation method for obtaining an output signal from the RI. An estimate is obtained of the influence of weak background illumination and of an incorrect choice of the mirror parameters. At the level of the losses currently achieved in mirrors (10{sup -6}). The sensitivity to displacements should be 4 x 10{sup -23} m Hz{sup -1/2} for a light source of 1 W power. It is suggested that the RI can be used in gravitational wave detectors, particularly if they are constructed so that there is a small space between the mirrors. This condition makes it possible to reduce the frequency dispersion, which is nearly excluded in a dispersion-free variant of the interferometer. (laser applications and other topics in quantum electronics)},
doi = {10.1070/QE1998V028N01ABEH001141},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 1,
volume = 28,
place = {United States},
year = {1998},
month = {1}
}