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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 6 — Mar. 15, 2006
  • pp: 799–801

Two-spatial-mode parametric amplifier in lithium niobate waveguides with asymmetric Y junctions

Xiuping Xie and M. M. Fejer  »View Author Affiliations

Optics Letters, Vol. 31, Issue 6, pp. 799-801 (2006)

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For optical parametric amplifiers in proton-exchange waveguide devices reported to date, both the signal and the idler photons are in the TM 00 mode, causing difficulty in distinguishing signal from idler. We report a two-mode optical parametric amplifier. The key components, asymmetric Y junctions, successfully launch the pump wave in a pure TM 10 mode and separate the signal and the idler in the TM 10 and TM 00 modes with a power ratio of as much as 27.5 dB. With high parametric gain, optical parametric generation with a threshold of 300 pJ pulse was demonstrated for 1.8 ps long pump pulses near 780 nm. These periodically poled lithium niobate waveguides are efficient integrable photon sources.

© 2006 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Nonlinear Optics

Original Manuscript: November 7, 2005
Manuscript Accepted: November 16, 2005

Xiuping Xie and M. M. Fejer, "Two-spatial-mode parametric amplifier in lithium niobate waveguides with asymmetric Y junctions," Opt. Lett. 31, 799-801 (2006)

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