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Proceedings Paper

Photoinduced optical and electrical pulsations and pattern formation in photorefractive crystals
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Paper Abstract

We have observed the conversion of CW laser Ar-ion beam power into pulsating multi-channel outputs: optical, electric and piezoelectric with simultaneous dynamic pattern formation. Frequencies of multi-channel pulsations have characteristic sigmoidal dependence (with threshold) on laser intensity. We have also demonstrated the possibility of synchronization of two optical pulsators, through regulated optical coupling in a photorefractive LiNbO3 crystal. Spatial distribution of scattered light is selforganized in different patterns (hexagonal and cross-type)

Paper Details

Date Published: 20 November 2002
PDF: 9 pages
Proc. SPIE 4803, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII, (20 November 2002); doi: 10.1117/12.453584
Show Author Affiliations
Nickolai V. Kukhtarev, Alabama A&M Univ. (United States)
Tatiana V. Kukhtareva, Alabama A&M Univ. (United States)
Mekonen Bayssie, Alabama A&M Univ. (United States)
Benjamin G. Penn, NASA Marshall Space Flight Ctr. (United States)
Donald O. Frazier, NASA Marshall Space Flight Ctr. (United States)
Hossin Ahmed Abdeldayem, NASA Goddard Space Flight Ctr. (United States)
Partha P. Banerjee, Univ. of Dayton (United States)
Tracy Dean Hudson, U.S. Army Aviation and Missile Command (United States)
William A. Friday, U.S. Army Aviation and Missile Command (United States)


Published in SPIE Proceedings Vol. 4803:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII
Francis T. S. Yu; Ruyan Guo, Editor(s)

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