%0 Journal Article
%T Coherent beam combining of multi-wavelength lasers based on stochastic parallel gradient descent algorithm<br>基于随机并行梯度下降算法的多波长激光相干合成
%A Wang Xiao-Lin
%A Zhou Pu
%A Ma Yan-Xing
%A Ma Hao-Tong
%A Xu Xiao-Jun
%A Liu Ze-Jin
%A Zhao Yi-Jun
%A <br>王小林
%A 周朴
%A 马阎星
%A 马浩统
%A 许晓军
%A 刘泽金
%A 赵伊君
%J 物理学报
%D 2010
%I 
%X Owing to the restriction of the stimulated Brillouin scattering (SBS) and other nonlinear effects, the output power of the single frequency amplifier is ar a level of about hundred watts. Multi-wavelength and non-single frequency seed laser will mitigate the SBS and improve the output power of the fiber laser amplifier. The coherent beam combining of the non-single frequency and/or multi-wavelength laser will greatly increase the total output power of the coherent beam combining as compared with the coherent beam combining of a single frequency laser. Based on the stochastic parallel gradient descent (SPGD) algorithm, coherent combining of four channel four-wavelength lasers is realized. In the close loop state, the mean power of the main-lobe is four times higher than that of the open-loop, approaching 75% of its ideal value. The coherent combining of the multi-wavelength and non-single frequency laser is demonstrated and an approach to the high power coherent beam combining is provided.
%K fiber laser
%K coherent beam combining
%K multi-wavelength
%K non-single frequency laser<br>光纤激光
%K 相干合成
%K 多波长
%K 非单频激光
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=26A3E17D57E72488876609083033A45B&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=5D311CA918CA9A03&sid=6ABA9748BC85D2E1&eid=DF924A1054E7EE02&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=21