%0 Journal Article
%T Measurement of Far-field Divergence Angle of Gaussian Geam Based on Double-shearing Interference<br>双向剪切干涉法测量高斯光束远场发散角
%A SUN Dong-ping
%A LIU Bing-qi
%A HUA Wen-shen
%A LUO Xin-xin
%A <br>孙东平
%A 刘秉琦
%A 华文深
%A 骆新新
%J 光子学报
%D 2008
%I 
%X Propagation characteristics of Gaussian beam and double-shearing interference theories were studied.A method for measuring the far-field divergence angle of Gaussian beam was presented.A double-shearing interferometer was used in this method to measure wavefront radiuses of curvature at two certain positions in the path of the laser beam.Then,the divergence angle can be obtained from the radiuses.The measurement model was built by theoretical derivation and verified by experiment.Experimental measurement an...
%K Optical measurement
%K Double-shearing interference
%K Divergence angle
%K Gaussian beam<br>光学测量
%K 双向剪切干涉
%K 发散角
%K 高斯光束
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=7D11BA137C83355A99F4D41F425B17BC&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=708DD6B15D2464E8&sid=2A995BFD71B93D86&eid=65A9E7EABC3B3432&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=12