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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 22, Iss. 6 — Jun. 1, 2005
  • pp: 1283–1289

Group-velocity-matched noncollinear second-harmonic generation in quasi-phase matching

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


JOSA B, Vol. 22, Issue 6, pp. 1283-1289 (2005)
http://dx.doi.org/10.1364/JOSAB.22.001283


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Abstract

We demonstrate group-velocity-matched second-harmonic generation of 80-fs pulses under noncollinear quasi-phase-matching (QPM) geometry. Second-harmonic pulses of 100-fs duration, 11-nm bandwidth, and 0.78 - μ m center wavelength were generated with 50% efficiency with 3-mm-long periodically poled lithium niobate. We have also numerically studied the dependence of conversion efficiency and pulse durations on pump intensity, propagation length, and noncollinear angle. It is confirmed that our group-velocity-matching scheme requires a much lower pump intensity than the conventional collinear QPM scheme.

© 2005 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

Citation
Nobuhide Fujioka, Satoshi Ashihara, Hidenobu Ono, Tsutomu Shimura, and Kazuo Kuroda, "Group-velocity-matched noncollinear second-harmonic generation in quasi-phase matching," J. Opt. Soc. Am. B 22, 1283-1289 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-6-1283

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