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Conferences > QELS > 1999 > QMD > QMD5
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper QMD5

Quantum-noise measurements in high-efficiency single-pass sum-frequency generation with femtosecond pulses

Yong-qing Li, Dorel Guzun, and Min Xiao

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Abstract

Second-harmonic generation (SHG) was an attractive process to generate large amount of photon-number squeezing.1 Usually the nonlinear crystal is placed inside an optical cavity to enhance the nonlinear interaction. Recently, single-pass traveling-wave (TW) SHG has been proposed and experimentally demonstrated2 in a type II phase-matched KTP crystal. 0.3 dB amplitude squeezing was observed with a SHG conversion efficiency of 15%. The KNbOj crystal was recently employed in generating blue light by sum-frequency mixing3 with a slope efficiency of 300% nJ−1 for harmonic conversion. This single-pass conversion process in KNbO3 with femtosecond pulses is a very promising simple system for studying quantum optics effects.

© 1999 Optical Society of America

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