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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 5 — May. 1, 2003
  • pp: 853–856

Group-velocity matched second-harmonic generation in tilted quasi-phase-matched gratings

Satoshi Ashihara, Tsutomu Shimura, and Kazuo Kuroda  »View Author Affiliations

JOSA B, Vol. 20, Issue 5, pp. 853-856 (2003)

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We propose a novel scheme of achromatic phase matching for second-harmonic generation (SHG) in tilted quasi-phase matching gratings. The spectral angular dispersion is introduced in fundamental waves such that each frequency component satisfies the two-dimensional quasi-phase matched condition. This is equivalent to simultaneous quasi-phase- and group-velocity-matched SHG for ultrashort pulses. Equations to describe achromatic conditions are derived and applied specifically to periodically poled lithium niobate (PPLN). The phase-matching bandwidth for 10 mm-long PPLN increases by factors of 110 and 32 at wavelengths of 0.8 and 1.55 μm, respectively, compared with those for the conventional quasi-phase matching.

© 2003 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

Satoshi Ashihara, Tsutomu Shimura, and Kazuo Kuroda, "Group-velocity matched second-harmonic generation in tilted quasi-phase-matched gratings," J. Opt. Soc. Am. B 20, 853-856 (2003)

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