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Optics Letters

Optics Letters


  • Vol. 18, Iss. 7 — Apr. 1, 1993
  • pp: 488–490

Simple methods of measuring the net photorefractive phase shift and coupling constant

Rudolf Hofmeister, Amnon Yariv, Anthony Kewitsch, and Shogo Yagi  »View Author Affiliations

Optics Letters, Vol. 18, Issue 7, pp. 488-490 (1993)

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We report measurements of the photorefractive phase shift and coupling constant of several photorefractive materials. We solve the problem of beam coupling and diffraction in a material with a dynamically written grating for arbitrary input beams. These solutions are used to determine the beam coupling as a function of the photorefractive phase ϕ and coupling constant g when one beam is either sinusoidally phase modulated or ramped in phase. Experimental results are obtained for LiNbO3, BaTiO3, and for paraelectric potassium lithium tantalate niobate as a function of applied electric field.

© 1993 Optical Society of America

Original Manuscript: November 11, 1992
Published: April 1, 1993

Rudolf Hofmeister, Amnon Yariv, Anthony Kewitsch, and Shogo Yagi, "Simple methods of measuring the net photorefractive phase shift and coupling constant," Opt. Lett. 18, 488-490 (1993)

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