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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 20 — Sep. 28, 2009
  • pp: 17862–17867

Nondestructive quality evaluation of periodically poled lithium niobate crystals by diffraction

Krishnamoorthy Pandiyan, Yeon Sook Kang, Hwan Hong Lim, Byoung Joo Kim, and Myoungsik Cha  »View Author Affiliations

Optics Express, Vol. 17, Issue 20, pp. 17862-17867 (2009)

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Quasi-phase-matching devices are usually fabricated by electric field poling over photolithographically defined electrode patterns on ferroelectric crystal substrates. For the optimal nonlinear optical performance of such devices, the micro-poled domain structure must ensure good fidelity to the designed grating structure. We present a nondestructive diffraction method to evaluate the quality of periodically poled lithium niobate crystals, by utilizing index modulation caused by the internal field effects. Our proposed method is much simpler than the conventional second-harmonic generation experiment, and provides a fast, low-cost but accurate means for micro-poling quality evaluation.

© 2009 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(130.3730) Integrated optics : Lithium niobate
(160.2260) Materials : Ferroelectrics
(190.4360) Nonlinear optics : Nonlinear optics, devices

ToC Category:
Nonlinear Optics

Original Manuscript: September 14, 2009
Manuscript Accepted: September 15, 2009
Published: September 21, 2009

Krishnamoorthy Pandiyan, Yeon Sook Kang, Hwan Hong Lim, Byoung Joo Kim, and Myoungsik Cha, "Nondestructive quality evaluation of periodically poled lithium niobate crystals by diffraction," Opt. Express 17, 17862-17867 (2009)

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