%0 Journal Article
%T Focusing of Partially Coherent Vortex Beams by an Aperture Lens
%A RAO Lian-Zhou
%A PU Ji-Xiong
%A <br>饶连周
%A 蒲继雄
%J 中国物理快报
%D 2007
%I 
%X The focusing properties of partially coherent vortex wave fields are studied. Expressions are derived for the intensity distribution and the degree of coherence near the geometrical focus. It is found that the size of coherence vortex dark core in the focal region depends on the topological charges and normalized coherence lengths. It is found that the desired vortex dark core near the geometrical focus can be generated by choosing appropriate values of parameters. The degree of coherence possesses a pair of phase singularities regions in the geometrical focus neighbourhood.
%K 42
%K 25
%K Kb
%K 42
%K 25
%K Fx
%K 41
%K 85
%K Lc<br>光圈
%K 镜头
%K 聚焦
%K 涡旋束
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=A6F1F92187EC7BB83657632117A6A884&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=94C357A881DFC066&sid=87352E668344FB84&eid=EB4DE9DC132993F4&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0