Open AccessInfluence of external electric field on photorefractive two-wave coupling in SBN:Cr crystal and its applications
Author(s) -
Jianlin Zhao,
Zhenwei Li,
Di Yang,
Youqiao Ma,
Yang Dong-Sheng
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3756
Subject(s) - photorefractive effect , electric field , coupling (piping) , crystal (programming language) , materials science , optics , coupling coefficient of resonators , intensity (physics) , field (mathematics) , enhanced data rates for gsm evolution , ion , physics , optoelectronics , telecommunications , computer science , pure mathematics , metallurgy , programming language , mathematics , quantum mechanics , resonator
The properties and applications of the photorefractive two-wave coupling in con gruent SBN:Cr(Sr0.61Ba0.39Nb2O.6:Cr)crystal under external dc e lectric field are experimentally investigated in this paper.The variation of the intensity gain coefficient of the two-wave coupling with the external field is analyzed,and the measurement results are presented.It is found that the photore fractive two-wave coupling gain and response rapidity can be both increased,by applying appropriate external electric field to the crystal.Further study indica tes this electric response property of SBN:Cr crystal is useful to some applicat ions,such as improving the image edge-enhancement and the image edge-enhanceme nt joint-transform correlator based on the nonlinear energy transfer of photore fractive two-wave coupling in the crystal.