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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 15, Iss. 20 — Oct. 15, 1990
  • pp: 1153–1155

Broadband squeezing of light by pulse excitation

Takuya Hirano and Masahiro Matsuoka  »View Author Affiliations


Optics Letters, Vol. 15, Issue 20, pp. 1153-1155 (1990)
http://dx.doi.org/10.1364/OL.15.001153


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Abstract

Broadband squeezed states of the electromagnetic field are generated by degenerate parametric downconversion with pulse-light excitation in a Ba2NaNb5O15 crystal, in which noncritical type I phase matching is attained. Noise reduction below the level of the vacuum fluctuation is clearly observed over a detection bandwidth from dc to approximately 70 MHz. The minimum noise level obtained in the quiet quadrature is 1.1 dB below the shot-noise level. The scheme used in the present experiment is simple and promising for further improvement of squeezing. The relation between squeezing and parametric fluorescence is discussed quantitatively for the first time to the authors' knowledge.

© 1990 Optical Society of America

History
Original Manuscript: February 13, 1990
Manuscript Accepted: July 20, 1990
Published: October 15, 1990

Citation
Takuya Hirano and Masahiro Matsuoka, "Broadband squeezing of light by pulse excitation," Opt. Lett. 15, 1153-1155 (1990)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-15-20-1153

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