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Optics Letters

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  • Vol. 24, Iss. 14 — Jul. 15, 1999
  • pp: 987–989

Quantum-noise measurements in high-efficiency single-pass second-harmonic generation with femtosecond pulses

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


Optics Letters, Vol. 24, Issue 14, pp. 987-989 (1999)
http://dx.doi.org/10.1364/OL.24.000987


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Abstract

The quantum-noise properties of single-pass second-harmonic blue-light generation with femtosecond pulses have been measured. A conversion efficiency of as much as 63.5% of second-harmonic generation at 428.8 nm was observed in a KNbO<sub>3</sub> crystal with femtosecond (130-fs) pulses with wavelengths centered at 857.6 nm. The quantum noise on the generated blue light was measured to be 1.0 dB (1.4 dB of squeezing inferred) below the shot-noise limit. The noise reduction was found to be sensitive to the average power and the center wavelength of the input fundamental pulses under the condition of strong pump depletion.

© 1999 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(270.0270) Quantum optics : Quantum optics

Citation
Yong-qing Li, Dorel Guzun, and Min Xiao, "Quantum-noise measurements in high-efficiency single-pass second-harmonic generation with femtosecond pulses," Opt. Lett. 24, 987-989 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-14-987


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