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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 18 — Sep. 15, 2012
  • pp: 3864–3866

Role of a localized modulation of χ(2) in Čerenkov second-harmonic generation in nonlinear bulk medium

Yan Sheng, Vito Roppo, Ksawery Kalinowski, and Wieslaw Krolikowski  »View Author Affiliations


Optics Letters, Vol. 37, Issue 18, pp. 3864-3866 (2012)
http://dx.doi.org/10.1364/OL.37.003864


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Abstract

We study the second-harmonic generation in quadratic nonlinear media with localized spatial modulation of χ(2) response. We demonstrate that the emission of Čerenkov second-harmonic takes place only when the fundamental beam illuminates the region of χ(2) variation. This proves that the sharp modulation of the χ(2) nonlinearity constitutes a sufficient condition for the emission of Čerenkov second harmonic in bulk materials. Our calculations are in excellent agreement with simple analytical approach utilizing the concept of reciprocal vectors representing the Fourier spectrum of the modulation of χ(2).

© 2012 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 2, 2012
Revised Manuscript: July 31, 2012
Manuscript Accepted: August 2, 2012
Published: September 13, 2012

Citation
Yan Sheng, Vito Roppo, Ksawery Kalinowski, and Wieslaw Krolikowski, "Role of a localized modulation of χ(2) in Čerenkov second-harmonic generation in nonlinear bulk medium," Opt. Lett. 37, 3864-3866 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-18-3864

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