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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 36 — Dec. 20, 2000
  • pp: 6761–6770

Shot noise in gravitational-wave detectors with Fabry–Perot arms

Torrey T. Lyons, Martin W. Regehr, and Frederick J. Raab  »View Author Affiliations


Applied Optics, Vol. 39, Issue 36, pp. 6761-6770 (2000)
http://dx.doi.org/10.1364/AO.39.006761


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Abstract

Shot-noise-limited sensitivity is calculated for gravitational-wave interferometers with Fabry–Perot arms, similar to those being installed at the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Italian–French Laser Interferometer Collaboration (VIRGO) facility. This calculation includes the effect of nonstationary shot noise that is due to phase modulation of the light. The resulting formula is experimentally verified by a test interferometer with suspended mirrors in the 40-m arms.

© 2000 Optical Society of America

OCIS Codes
(000.2780) General : Gravity
(030.5260) Coherence and statistical optics : Photon counting
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry

History
Original Manuscript: January 28, 2000
Revised Manuscript: September 12, 2000
Published: December 20, 2000

Citation
Torrey T. Lyons, Martin W. Regehr, and Frederick J. Raab, "Shot noise in gravitational-wave detectors with Fabry–Perot arms," Appl. Opt. 39, 6761-6770 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-36-6761


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References

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  27. Others have observed that illuminating the entire surface of a photodiode can cause such an effect, which can be eliminated if only the active region is illuminated (D. H. Shoemaker, Massachusetts Institute of Technology, Cambridge, Mass., personal communication, 1999.) In our case the laser beam illumination was well within the active region whereas the incandescent light illuminated the entire photodiode. Unfortunately we did not try changing the collimation of the incandescent light.
  28. Ref. 23, Eq. (10–17), p. 291.
  29. Ref. 23, Eq. (10–95), p. 313–314.

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