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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10782–10785

Origin of light-deflection in lithium niobate and lithium tantalate under electric field

Laurent Guilbert  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10782-10785 (2009)

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The deflection of light reported by Müller et al. in lithium niobate [Appl. Phys. B 78, 367–370] and lithium tantalate [Appl. Optics 43 (34), 6344–6347] under electric field originates from refraction at domain-walls, like in ferroelastics. In ferroelectrics the optical discontinuity takes place at domain-walls as a consequence of the electro-optic effect. The theoretical deflection angle calculated from Snell’s law is proportional to the square root of the electric field and matches the experimental results reported by Müller et al. for lithium niobate. The finite domain-wall thickness mentioned by the authors is not involved in the deflection phenomenon.

© 2009 Optical Society of America

OCIS Codes
(130.3730) Integrated optics : Lithium niobate
(160.2100) Materials : Electro-optical materials
(260.1180) Physical optics : Crystal optics
(130.2260) Integrated optics : Ferroelectrics

ToC Category:
Integrated Optics

Original Manuscript: February 13, 2009
Revised Manuscript: April 20, 2009
Manuscript Accepted: April 20, 2009
Published: June 12, 2009

Laurent Guilbert, "Origin of light-deflection in lithium niobate and lithium tantalate under electric field," Opt. Express 17, 10782-10785 (2009)

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  1. T.  Horie, K.  Kawabe, M.  Tachiki, and S.  Sawada, "Thermal Transition of Transparency in Ferroelectric Single Crystal of Barium Titanate," J. Phys. Soc. Jpn. 10, 541-549 (1955). [CrossRef]
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  9. M.  Müller, E.  Soergel, and K.  Buse, "Light deflection from ferroelectric domain structures in congruent lithium tantalate crystals," Appl. Opt. 43, 6344-6347 (2004). [CrossRef] [PubMed]
  10. V. Y. Shur, I. S. Baturin, M. S. Nebogatikov, S. A. Negashev, A. I. Lobov, and E. A. Rodina, "Study of field-induced evolution of the domain geometry in lithium niobate and lithium tantalite single crystals by in situ optical method," Ferroelectrics 374, 78-87 (2008). [CrossRef]
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  13. L.  Guilbert, "Field-induced light-deflection in lithium niobate and lithium tantalate: the possible configurations," submitted to Appl. Phys. B (April 2009).

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Fig.1. . Fig. 2.

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