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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 31 — Nov. 1, 2007
  • pp: 7693–7696

Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO3

Yunlin Chen, S. W. Liu, Dongdong Wang, Tianlin Chen, and Min Xiao  »View Author Affiliations

Applied Optics, Vol. 46, Issue 31, pp. 7693-7696 (2007)

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Optical nonlinearities of periodically poled LiNbO 3 crystals were investigated by the single beam Z-scan technique with a continuous wave (cw) laser beam at 532   nm . The nonlinear optical absorption coefficient and refractive index change are determined to be 8.1 × 10 6 cm / W and 2.6 × 10 4 at 0.5 MW / cm 2 light intensity, respectively. Both sign and magnitude of the measured refractive nonlinearity are considerably different from the Z-scan results in congruent LiNbO 3 . The nonlinearities in the periodically poled LiNbO 3 induced by 532   nm continuous waves are believed to be mainly due to the photorefractive effect.

© 2007 Optical Society of America

OCIS Codes
(160.2260) Materials : Ferroelectrics
(190.5330) Nonlinear optics : Photorefractive optics

ToC Category:
Nonlinear Optics

Original Manuscript: July 24, 2007
Manuscript Accepted: September 12, 2007
Published: October 25, 2007

Yunlin Chen, S. W. Liu, Dongdong Wang, Tianlin Chen, and Min Xiao, "Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO3," Appl. Opt. 46, 7693-7696 (2007)

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