%0 Journal Article
%T Coherent Beam Combining of Three Watt-Level Fiber Amplifiers Using a DSP-Based Stochastic Parallel Gradient Descent Algorithm<br>
%A ZHOU Pu
%A LIU Ze-Jin
%A WANG Xiao-Lin
%A MA Yan-Xing
%A LI Xiao
%A XU Xiao-Jun
%A GUO Shao-Feng
%A <br>
%J 中国物理快报
%D 2009
%I 
%X We present an experimental study on coherent beam combining of three watt-level fiber amplifiers using a stochastic parallel gradient descent (SPGD) algorithm. Phase controlling is performed by running the SPGD algorithm on a digital-signal-processor (DSP) chip with a voltage updating rate of 16500 times per second. Energy encircled in the target pinhole is 2.62 times more than that in an open loop. The combining efficiency is as high as 87%.
%K 42
%K 55
%K Wd
%K 42
%K 25
%K Kb
%K 42
%K 60
%K Da<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=B907B83501F2FCB0F0C93AB23D3C5922&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=E158A972A605785F&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0