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Electric-field multiplexing/demultiplexing of volume holograms in photorefractive media

Kewitsch, Anthony S. and Segev, Mordechai and Yariv, Amnon and Neurgaonkar, Ratnakar R. (1993) Electric-field multiplexing/demultiplexing of volume holograms in photorefractive media. Optics Letters, 18 (7). pp. 534-536. ISSN 0146-9592.

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We propose a new method of volume hologram multiplexing/demultiplexing in noncentrosymmetric media. Volume holograms may be multiplexed by tuning the material parameters of the recording medium (such as refractive index or lattice parameters) while keeping the external parameters (wavelength and angles) fixed. For example, an external dc electric field alters the index of refraction through the electro-optic effect, effectively changing the recording and reconstruction wavelengths in the storage medium. Then the storage of holograms at different fields, hence different indices of refraction, is closely related to wavelength multiplexing. We demonstrate this concept in a preliminary experiment by electrically multiplexing two volume holograms in a strontium barium niobate crystal.

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Additional Information:© 1993 Optical Society of America Received October 23, 1992 This research is supported by the Army Research Office and the Air Force Office of Scientific Research. Anthony Kewitsch acknowledges the support of an Office of Naval Research graduate fellowship. We thank R. Hofmeister and S. Yagi for their assistance.
Issue or Number:7
Record Number:CaltechAUTHORS:KEWol93a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5573
Deposited By: Archive Administrator
Deposited On:25 Oct 2006
Last Modified:02 Oct 2019 23:24

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