%0 Journal Article
%T COHERENT LIGHT AMPLIFICATION IN PHOTOREFRACTIVE CRYSTALS WITH A LOCAL RESPONSE<br>在局域响应的光折变晶体中的相干光放大
%A GUO RU
%A LIU SI-MIN
%A LING ZHEN-FANG
%A ZHANG GUANG-YIN
%A <br>郭儒
%A 刘思敏
%A 凌振芳
%A 张光寅
%J 物理学报
%D 1997
%I 
%X It is shown theoretically and experimentally that a weak signal light amplification is possible in thin photorefractive crystals with a local nonlinear response due to photovoltaic charge transport.The origin of the power exchange is that four wave interaction of the input beams and reflection beam at the rear will form two sets of bending gratings with certain spatial phase shift.When the grating written by the reflection wave and its diffracted wave is read by the input pump beam under off Bragg condition ,the weak signal beam achieves coherent amplification.Theoretical and experimental results are compared with each other.
%K 光折变晶体
%K 局域响应
%K 相干光放大
%K 晶体
%K 弱信号
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=23BAA394FB1545884538E936BF8A3010&yid=5370399DC954B911&vid=D997634CFE9B6321&iid=9CF7A0430CBB2DFD&sid=B219870B99929345&eid=0D56350A4FA1FCC9&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0