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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 2 — Jan. 15, 2008
  • pp: 92–94

Generation of a stable low-frequency squeezed vacuum field with periodically poled K Ti O P O 4 at 1064 nm

Keisuke Goda, Eugeniy E. Mikhailov, Osamu Miyakawa, Shailendhar Saraf, Stephen Vass, Alan Weinstein, and Nergis Mavalvala  »View Author Affiliations


Optics Letters, Vol. 33, Issue 2, pp. 92-94 (2008)
http://dx.doi.org/10.1364/OL.33.000092


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Abstract

We report the generation of a stable continuous-wave low-frequency squeezed vacuum field with a squeezing level of 7.4 ± 0.1 dB at 1064 nm , the wavelength at which laser-interferometric gravitational wave (GW) detectors operate, using periodically poled K Ti O P O 4 (PPKTP) in a subthreshold optical parametric oscillator. The squeezing was observed in a broad band of frequencies above 700 Hz where the sensitivity of the currently operational GW detectors is limited by shot noise. PPKTP has the advantages of higher nonlinearity, smaller pump-induced seed absorption, and wider temperature tuning range than alternative nonlinear materials such as MgO-doped or periodically poled Li Nb O 3 , and is, therefore, an excellent material for generation of squeezed vacuum fields for application to laser interferometers for GW detection.

© 2008 Optical Society of America

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

History
Original Manuscript: July 31, 2007
Manuscript Accepted: November 21, 2007
Published: January 3, 2008

Citation
Keisuke Goda, Eugeniy E. Mikhailov, Osamu Miyakawa, Shailendhar Saraf, Stephen Vass, Alan Weinstein, and Nergis Mavalvala, "Generation of a stable low-frequency squeezed vacuum field with periodically poled KTiOPO4 at 1064 nm," Opt. Lett. 33, 92-94 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-2-92


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