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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 11 — May. 26, 2008
  • pp: 8056–8066

Non-collinear quasi phase matching and annular profiles in difference frequency generation with focused Gaussian beams

P. Malara, P. Maddaloni, G. Mincuzzi, S. De Nicola, and P. De Natale  »View Author Affiliations


Optics Express, Vol. 16, Issue 11, pp. 8056-8066 (2008)
http://dx.doi.org/10.1364/OE.16.008056


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Abstract

We present and experimentally test a simple model for difference frequency generation (DFG) in periodically-poled crystals with gaussian pumping beams. Focusing of input beams originates several non-collinear quasi-phase-matching configurations of the interacting wavevectors, which contribute to the idler output field. In this picture, we accurately describe a number of effects, such as the occurrence of annular idler intensity profiles and the asymmetric trend of DFG power vs temperature. Finally, we quantitatively test the model by means of an indirect measurement of the crystal poling period.

© 2008 Optical Society of America

OCIS Codes
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 7, 2008
Revised Manuscript: March 21, 2008
Manuscript Accepted: March 30, 2008
Published: May 20, 2008

Citation
P. Malara, P. Maddaloni, G. Mincuzzi, S. De Nicola, and P. De Natale, "Non-collinear quasi phase matching and annular profiles in difference frequency generation with focused Gaussian beams," Opt. Express 16, 8056-8066 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-11-8056


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