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Optics Letters

Optics Letters


  • Vol. 23, Iss. 3 — Feb. 1, 1998
  • pp: 165–167

Phase correction in double-pass quasi-phase-matched second-harmonic generation with a wedged crystal

G. Imeshev, M. Proctor, and M. M. Fejer  »View Author Affiliations

Optics Letters, Vol. 23, Issue 3, pp. 165-167 (1998)

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Compensation for dispersive elements is necessary for efficient multiple-pass and intracavity nonlinear frequency-conversion devices. We describe the use of a wedged quasi-phase-matched crystal to compensate for the phase shifts introduced by mirrors in such devices, taking advantage of the periodic variation in the relative phases of the interacting waves in a quasi-phase-matching grating. A representative double-pass second-harmonic generation experiment with a 5-cm -long periodically poled lithium niobate crystal showed the expected conversion efficiency enhancement.

© 1998 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4160) Nonlinear optics : Multiharmonic generation

G. Imeshev, M. Proctor, and M. M. Fejer, "Phase correction in double-pass quasi-phase-matched second-harmonic generation with a wedged crystal," Opt. Lett. 23, 165-167 (1998)

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