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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 10 — Oct. 1, 2006
  • pp: 2134–2141

Second- and third-harmonic generation with vector Gaussian beams

Silvia Carrasco, Bahaa E.A. Saleh, Malvin C. Teich, and John T. Fourkas  »View Author Affiliations


JOSA B, Vol. 23, Issue 10, pp. 2134-2141 (2006)
http://dx.doi.org/10.1364/JOSAB.23.002134


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Abstract

We consider second-harmonic generation (SHG) and third-harmonic generation (THG) in a nonlinear optical crystal illuminated by a vector Gaussian beam, i.e., a Gaussian beam in which the axial component of the excitation field is considered. This component exhibits twice the Gouy phase shift of the transverse component and vanishes at points on the beam axis. Harmonic generation stemming from this component exhibits a unique dependence on geometrical factors associated with the location and focusing of the beam relative to the location of the crystal. Using the first Born approximation (undepleted fundamental beam), we derive analytical formulas for the quantities that characterize these geometrical factors for a nonlinear optical crystal described by an arbitrary nonlinear susceptibility tensor, for both SHG and THG and for all polarization components. We also determine the efficiencies of these processes as functions of the geometry of the experimental arrangement for phase-matched crystals as well as for crystals of infinite length.

© 2006 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes

ToC Category:
Nonlinear Optics

History
Original Manuscript: February 21, 2006
Revised Manuscript: June 12, 2006
Manuscript Accepted: June 17, 2006

Citation
Silvia Carrasco, Bahaa E. A. Saleh, Malvin C. Teich, and John T. Fourkas, "Second- and third-harmonic generation with vector Gaussian beams," J. Opt. Soc. Am. B 23, 2134-2141 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-10-2134

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