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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 8 — Apr. 15, 2014
  • pp: 2427–2430

Exact cascading nonlinearity in quasi-phase-matched quadratic media

Matteo Conforti  »View Author Affiliations

Optics Letters, Vol. 39, Issue 8, pp. 2427-2430 (2014)

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The evolution of light pulses and beams in a quasi-phase-matched (QPM) quadratic medium is usually described by considering only the spatial harmonic of the QPM grating that minimizes the residual phase-mismatch. I show that, for strongly phase-mismatched interactions (the cascading regime), several harmonics need to be accounted for in order to obtain the correct value of the effective cubic nonlinearity, for which I find a simple analytical expression. I discuss the effects of the higher order harmonics of the grating on solitary wave propagation.

© 2014 Optical Society of America

OCIS Codes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(190.7070) Nonlinear optics : Two-wave mixing
(190.6135) Nonlinear optics : Spatial solitons

ToC Category:
Nonlinear Optics

Original Manuscript: January 14, 2014
Revised Manuscript: February 28, 2014
Manuscript Accepted: March 16, 2014
Published: April 10, 2014

Matteo Conforti, "Exact cascading nonlinearity in quasi-phase-matched quadratic media," Opt. Lett. 39, 2427-2430 (2014)

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