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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 17 — Aug. 26, 2002
  • pp: 887–892

Green bright squeezed light from a cw periodically poled KTP second harmonic generator

Ulrik L. Andersen and Preben Buchhave  »View Author Affiliations

Optics Express, Vol. 10, Issue 17, pp. 887-892 (2002)

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We present the experimental observation of bright amplitude squeezed light from a singly resonant second harmonic generator (SHG) based on a periodically poled potassium titanyl phosphate (KTP) crystal. Contrary to conventional SHG, the interacting waves in this device couple efficiently using quasi phase matching (QPM) and more importantly QPM allows access to higher valued elements of the nonlinear tensor than is possible under the constraint of birefringence phase matching. We observe a noise reduction of 13% below the shot noise limit in the generated second harmonic field. This noise reduction is greater than what could be expected using normal birefringence phase matched KTP with the same experimental parameters. Excellent agreement between experiment and theory is found.

© 2002 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Research Papers

Original Manuscript: July 17, 2002
Revised Manuscript: August 21, 2002
Published: August 26, 2002

Ulrik Andersen and Preben Buchhave, "Green bright squeezed light from a cw periodically poled KTP second harmonic generator," Opt. Express 10, 887-892 (2002)

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