%0 Journal Article
%T Focal switch of Hermite-Gaussian beams<br>厄米-高斯光束的焦开关
%A 彭润伍
%A 吕百达
%J 物理学报
%D 2003
%I 
%X A simple optical system consisting of an aperture and a thin lens is considered.It is shown that when a Hermite-Gaussian (H-G) beam is incident on such a type of system and the parameters of the optical system and the beam satisfy a certain condition,a new effect called the focal switch can take place.Detailed numerical results and physical explanation are given to illustrate the characteristics of the focal switch of H-G beams.A comparison with the previous work is made and the potential application of the focal switch is pointed out.
%K aperture-lens system
%K Hermite-Gaussian beams
%K focal shift
%K focal switch<br>厄米-高斯光束
%K 焦开关
%K 光阑-透镜系统
%K 焦移
%K 光强分布
%K 光谱开关
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=0F3661CFF2B30B4F&yid=D43C4A19B2EE3C0A&vid=286FB2D22CF8D013&iid=708DD6B15D2464E8&sid=1A96AF0E8E0B43F9&eid=AB222DFB6FC6A3A5&journal_id=1000-3290&journal_name=物理学报&referenced_num=11&reference_num=10