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Optics Letters

Optics Letters


  • Vol. 18, Iss. 12 — Jun. 15, 1993
  • pp: 956–958

Temporal evolution of fanning in photorefractive materials

Mordechai Segev, Doruk Engin, Amnon Yariv, and George C. Valley  »View Author Affiliations

Optics Letters, Vol. 18, Issue 12, pp. 956-958 (1993)

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We present detailed calculations of the temporal and spatial evolution of beam fanning in photorefractive crystals that is initiated by scattering from noise. We show that fanning starts from beam coupling between the incident radiation and part of the incident radiation scattered by noise at or near the input plane. We show that scattering within the volume of the crystal has negligible effect on fanning, that absorption affects the time response but not the spatial pattern of the fanning, and that the difference between calculations including only phase-matched terms and those including non-phase-matched terms is negligible.

© 1993 Optical Society of America

Original Manuscript: December 7, 1992
Published: June 15, 1993

Mordechai Segev, George C. Valley, Doruk Engin, and Amnon Yariv, "Temporal evolution of fanning in photorefractive materials," Opt. Lett. 18, 956-958 (1993)

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