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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 12 — Jun. 11, 2007
  • pp: 7448–7457

Femtosecond pulse synthesis by efficient second-harmonic generation in engineered quasi phase matching gratings

Usman K. Sapaev and Gaetano Assanto  »View Author Affiliations


Optics Express, Vol. 15, Issue 12, pp. 7448-7457 (2007)
http://dx.doi.org/10.1364/OE.15.007448


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Abstract

We numerically design quasi-phase matched crystals with domains of arbitrary sizes for second harmonic generation by femtosecond pulses, taking into account both group velocity mismatch and dispersion. An efficient simulated-annealing algorithm is developed to design quasi-phase matching gratings which can yield the desired amplitude and phase of second-harmonic pulses in the presence of pump depletion. The method is illustrated with reference to single, double-hump and chirped fs Gaussian pulses in a lithium niobate crystal.

© 2007 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: April 17, 2007
Revised Manuscript: May 26, 2007
Manuscript Accepted: May 27, 2007
Published: June 1, 2007

Citation
Usman K. Sapaev and Gaetano Assanto, "Femtosecond pulse synthesis by efficient second-harmonic generation in engineered quasi phase matching gratings," Opt. Express 15, 7448-7457 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-12-7448


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