%0 Journal Article
%T High Power Ultra Short Laser Pulse Filamentation Using Variational Analysis<br>用变分法研究超短超强脉冲在介质中的成丝
%A ZHANG Ying
%A WEI Xiao-feng
%A ZHU Qi-hua
%A YING Chun-tong
%A Hao Yi-dan
%A <br>张颖
%A 魏晓峰
%A 朱启华
%A 应纯同
%A 郝轶聃
%J 光子学报
%D 2008
%I 
%X Using variational analysis,the nonlinear equation is simplified.The filamentation dynamics is analogous to the problem of a particle moving in a potential well,then self-focusing,diffraction and multiple-photon ionization mechanisms are denoted by non dimensional symbols.The evolvement of beam power,radius,wavefront curvature,and temporal profile is discussed with different initial conditions.The results are qualitatively coincident with some major experimental observations such as filamentation and refocus phenomenon.
%K Self-focusing
%K Multiple-photon ionization (MPI)
%K Ultra short optical pulse
%K Filamentation<br>自聚焦
%K 多光子电离
%K 超短光脉冲
%K 成丝
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=F29960F51EABE2B2FD35157EE63810FD&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=DF92D298D3FF1E6E&sid=1EB017852C08068A&eid=FC9A32AA461904A5&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=10