%0 Journal Article
%T Experimental research on phase detection and correction of two fiber amplifier based on active segmented mirrors<br>基于能动分块反射镜的两路光纤放大器相位探测及其相干合成实验研究
%A Yang Ruo-Fu
%A Yang Ping
%A Shen Feng
%A <br>杨若夫
%A 杨平
%A 沈锋
%J 物理学报
%D 2009
%I 
%X The measurement of piston noise is a critical issue in coherent combining of fiber lasers. This paper presents a strip extracting algorithm, which get the amplitude of phase noise in fiber amplifier. By this algorithm, phase noise of fiber amplifier working in 10~(-3)W level is measured and real-time controlled by high-speed digital processing circuit and active segment mirrors. Experimental results indicate, that after closing the loop, fringe contrast improves from 0.09 to 0.25, intensity value of piston noise decreases from 1053.4 nm down to 116.7 nm; the calibration precision and bandwidth of the system achieve 1/10λ and 50 Hz, respectively.
%K active segment mirror
%K strip extract algorithm
%K phase noise
%K fiber amplifier<br>能动分块反射镜，
%K 条纹提取算法，
%K 相位扰动，
%K 光纤放大器
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A2E17557E6BF7ADA6DBE06E34A929F40&yid=DE12191FBD62783C&vid=9FFCC7AF50CAEBF7&iid=59906B3B2830C2C5&sid=AAC33A6EF814F871&eid=EA7ACAE6CA766FDF&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=0