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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 9 — Sep. 1, 2007
  • pp: 2394–2405

Cascaded third-harmonic generation of ultrashort optical pulses in two-dimensional quasi-phase-matching gratings

Nobuhide Fujioka, Satoshi Ashihara, Hidenobu Ono, Tsutomu Shimura, and Kazuo Kuroda  »View Author Affiliations


JOSA B, Vol. 24, Issue 9, pp. 2394-2405 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002394


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Abstract

Cascaded third-harmonic generation (THG) of femtosecond pulses in a two-dimensional periodically poled lithium niobate is demonstrated experimentally. The poling pattern satisfies quasi-phase-matching conditions for both second-harmonic generation (SHG) and the following sum-frequency generation. The pulse-front tilt in noncollinear interactions compensates for group-velocity mismatch among fundamental, second-harmonic (SH), and third-harmonic (TH) pulses, thereby achieving broad acceptance bandwidths in SHG and THG. A 2 mm thick device generates SH and TH pulses of 106 and 110 fs , respectively, from fundamental pulses with temporal duration of 118 fs and a 1568 nm center wavelength. The frequency conversion properties are studied theoretically, and the optimal focusing condition for maximum conversion efficiency is derived.

© 2007 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 22, 2007
Manuscript Accepted: June 16, 2007
Published: August 24, 2007

Citation
Nobuhide Fujioka, Satoshi Ashihara, Hidenobu Ono, Tsutomu Shimura, and Kazuo Kuroda, "Cascaded third-harmonic generation of ultrashort optical pulses in two-dimensional quasi-phase-matching gratings," J. Opt. Soc. Am. B 24, 2394-2405 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-9-2394

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