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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 11 — Jun. 1, 2008
  • pp: 1207–1209

Mode conversion in quadratic nonlinear crystals

Tal Ellenbogen, Ido Dolev, and Ady Arie  »View Author Affiliations

Optics Letters, Vol. 33, Issue 11, pp. 1207-1209 (2008)

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We propose a novel all-optical, nonlinear mode-conversion scheme based on cascaded three-wave-mixing phase-matched interactions in quadratic nonlinear crystals. We demonstrate the method experimentally by performing all-optical mode conversion of an input 1636 nm Hermite–Gaussian mode from the zeroth order to the first order using two periodically poled LiNbO 3 crystals. Nonlinear mode conversion of an input beam into a higher order, orthogonally polarized output beam can be realized using only one quasiperiodic nonlinear structure. Moreover, it can be enhanced for conversion of complex modes, e.g., Laguerre–Gaussian or Bessel modes.

© 2008 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

Original Manuscript: March 12, 2008
Manuscript Accepted: March 30, 2008
Published: May 27, 2008

Tal Ellenbogen, Ido Dolev, and Ady Arie, "Mode conversion in quadratic nonlinear crystals," Opt. Lett. 33, 1207-1209 (2008)

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