%0 Journal Article
%T Measurement of optical nonlinearities in nonlocal nonlinear media by a single Z-scan method<br>利用Z扫描技术确定非局域非线性介质的非线性折射率
%A Gao Xi-Cun
%A Hu Wei
%A Zhang Tao
%A Guo Qi
%A Wang Xin-Ai
%A Long Xue-Wen
%A <br>高喜存
%A 胡 巍
%A 张 涛
%A 郭 旗
%A 王新爱
%A 龙学文
%J 物理学报
%D 2007
%I 
%X Using Gaussian decomposion method, we analyze the characteristics of Z-scan curves for nonlocal nonlinear materials in this paper.We provide the normalized transmittance expression for determinating the nonlinear refractive index of nonlocal nonlinear medium based on Gaussian nonlinear response, analyze the influence of the degree of nonlocality on the Z-scan curves, show the methods of measuring the nonlinear refractive index of nonlocal nonlinear medium and the degree of nonlocality, discuss the adjustment brought about by the degree of nonlocality and suggest some feasible measurements. In addition, the numerical results on the base of sech response are obtained and compared with the results on the assumption that the nonlinear response of the nonlocal media is Gaussian.
%K nonlocal degree
%K thin media
%K far-field condition
%K Z-scan curve<br>非局域程度，
%K 薄介质，
%K 远场条件，
%K Z扫描曲线
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=091B470D4BF91CB0&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=E158A972A605785F&sid=5EDF06FA535B7C76&eid=B2BED697BDC0207C&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19