%0 Journal Article
%T Theoretical and experimental study of new dark hollow beams<br>一种新空心光束的理论及实验研究
%A Zhang Lei
%A Cai Yang-Jian
%A Lu Xuan-Hui
%A <br>张 蕾
%A 蔡阳健
%A 陆璇辉
%J 物理学报
%D 2004
%I 
%X A new mathematical model named hollow Gaussian beams (HGBs) is introduced to describe the dark hollow beam. The area of the dark region across the HGBs can be easily controlled by properly choosing the beam parameters. An analytical propagation formula for HGBs through paraxial optical system is derived. The evolution properties of the intensity distribution of HGBs in free space propagation are illustrated graphically using the derived propagation formula. By using matrix eigenvalues method, the laser cavity with diffraction optical elements, which can generate the dark hollow beams, was constructed. Dark hollow beams were realized in experiment and its intensity distribution properties in near field and far field were studied. The results derived from the experiment is coincident with those predicted by the theory. The dark hollow beams we have obtained can be used conveniently to analyze atoms manipulation and may provide a new method for atom cooling.
%K hollow Gaussian beam
%K laser cavity
%K propagation properties<br>空心高斯光束
%K 光学谐振腔
%K 传输特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=2AE45AEAC5404F10&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=B31275AF3241DB2D&sid=E0606BDC3B7A10F0&eid=3C27325D8381FEA0&journal_id=1000-3290&journal_name=物理学报&referenced_num=12&reference_num=19