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Temperature dependence of a local thermal fixed photorefractive hologram in LiNbO 3 by CO 2 laser heating
Author(s) -
Li Jianlang,
Liu Liren,
Liu Youwen,
Zhou Changhe
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/1098-2760(20000720)26:2<89::aid-mop6>3.0.co;2-a
Subject(s) - photorefractive effect , holography , laser , optics , materials science , amplitude , space charge , field (mathematics) , microwave , optoelectronics , physics , electron , mathematics , quantum mechanics , pure mathematics
A photorefractive hologram can be fixed locally under a temperature nonuniform field by CO 2 laser heating the LiNbO 3 . Here, on the basis of analyzing the relationship between the fixed space‐charge field amplitude E sc and the fixing temperature T f , two parameters, the localization coefficient Ψ and the average space‐charge field amplitude E sc ave , are defined to evaluate the fixed local photorefractive hologram by CO 2 laser heating the LiNbO 3 . The same analysis also can be used when the boundary conditions and the laser beam profile are changed. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 89–93, 2000.