%0 Journal Article
%T Induced focusing due to two optical beams counterpropagating in self-defocusing nonlinear media<br>双光束在自散焦介质中对向共同传输时的诱导聚焦
%A 江秀娟
%A 李华刚
%A 郭旗
%A 胡巍
%J 物理学报
%D 2004
%I 
%X In this paper,a research work is done on two optical beams co-propagating in opp osite directions in two-dimensional self-defocusing nonlinear media.Numerical re sults show that the probe beam can be induced to focus due to cross-phase modula tion by the pump beam under certain conditions.We also discuss the effect on the focusing of the probe beam from the four parameters:the specimen length,the ini tial amplitudes of the pump beam and the probe beam,and the initial transversal distance between the centers of the two beams.We find that some of them have opt imum values,which result in the strongest focusing.
%K self-defocusing nonlinear media
%K counterpropagation
%K induced focusing
%K cross-pha se modulation effect<br>自散焦介质，
%K 对向传输，
%K 诱导聚焦，
%K 交叉相位调制效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A6467D7BD7C59559&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=708DD6B15D2464E8&sid=389531F532E1539B&eid=E3779F0D82BC5477&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=12