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Optics Letters

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  • Vol. 30, Iss. 13 — Jul. 1, 2005
  • pp: 1671–1673

Two-dimensional mapping of electro-optic phase retardation in lithium niobate crystals by digital holography

M. de Angelis, S. De Nicola, A. Finizio, G. Pierattini, P. Ferraro, S. Grilli, M. Paturzo, L. Sansone, D. Alfieri, and P. De Natale  »View Author Affiliations


Optics Letters, Vol. 30, Issue 13, pp. 1671-1673 (2005)
http://dx.doi.org/10.1364/OL.30.001671


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Abstract

We demonstrate accurate two-dimensional mapping of the phase retardation induced by the electro-optic effect in lithium niobate crystals. Off-axis digital holography is used to investigate congruent z-cut crystals. The spatially resolved optical path difference is interferometrically measured while a linearly rising voltage ramp is applied to the crystal. This procedure provides information on the uniformity of crystals' electro-optic properties and offers the ability to detect the presence of defects that is of fundamental importance for reliable processing of photonic devices.

© 2005 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(160.2100) Materials : Electro-optical materials
(160.3730) Materials : Lithium niobate

Citation
M. de Angelis, S. De Nicola, A. Finizio, G. Pierattini, P. Ferraro, S. Grilli, M. Paturzo, L. Sansone, D. Alfieri, and P. De Natale, "Two-dimensional mapping of electro-optic phase retardation in lithium niobate crystals by digital holography," Opt. Lett. 30, 1671-1673 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-13-1671


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