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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 20, Iss. 6 — Jun. 1, 2003
  • pp: 1285–1289

High-efficiency blue-light generation by frequency doubling of picosecond pulses in a thick KNbO3 crystal

Yong-qing Li, Dorel Guzun, Greg Salamo, and Min Xiao  »View Author Affiliations


JOSA B, Vol. 20, Issue 6, pp. 1285-1289 (2003)
http://dx.doi.org/10.1364/JOSAB.20.001285


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Abstract

We report an experimental demonstration of highly efficient single-pass second-harmonic generation from 859 nm to 429.5 nm with picosecond pulses in a thick KNbO3 crystal. Both the conversion-efficiency and quantum-noise properties of the generated blue pulses are measured at various pump intensities under a strong focusing condition. We find that the variation of the conversion efficiency of the picosecond second-harmonic generation is an oscillatory function of the input pump intensity (with a maximum efficiency of 56.5%) and is sensitive to the position of the input beam focus in the crystal. The quantum noise on the blue beam can be reduced below the shot-noise limit by 20% at low input power.

© 2003 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(270.6570) Quantum optics : Squeezed states

Citation
Yong-qing Li, Dorel Guzun, Greg Salamo, and Min Xiao, "High-efficiency blue-light generation by frequency doubling of picosecond pulses in a thick KNbO3 crystal," J. Opt. Soc. Am. B 20, 1285-1289 (2003)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-20-6-1285

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