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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 24 — Nov. 24, 2008
  • pp: 19615–19628

Kinetics of two wave mixing gain for moving grating technique in photorefractive BaTiO3 crystal

Sang Jo Lee, Hye Ri Yang, Eun Ju Kim, Yeung Lak Lee, and Chong Hoon Kwak  »View Author Affiliations

Optics Express, Vol. 16, Issue 24, pp. 19615-19628 (2008)

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We present analytical expressions for time-dependent space charge fields and two wave-mixing gains under the external applied fields accompanying with the grating translation. We analyzed the variations of complex space charge fields in a complex plane, and also obtained the explicit expressions for the resonance and optimum frequencies (or moving grating velocities), which maximize the magnitude and imaginary part of space charge fields. We also conducted two wave-mixing experiments with the grating translation technique without an external applied field in a BaTiO3 crystal. The transient behaviors of measured gains look like damped harmonic oscillations, showing excellent agreement with the theory for the entire time range.

© 2008 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing

ToC Category:
Nonlinear Optics

Original Manuscript: August 1, 2008
Revised Manuscript: November 3, 2008
Manuscript Accepted: November 7, 2008
Published: November 12, 2008

Sangjo Lee, Hye Ri Yang, Eun Ju Kim, Yeung Lak Lee, and Chong Hoon Kwak, "Kinetics of two wave mixing gain for moving grating technique in photorefractive BaTiO3 crystal," Opt. Express 16, 19615-19628 (2008)

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