%0 Journal Article
%T Improving of the irradiation uniformity on targets with a diffraction-weakened lens array and spectral dispersion smoothing<br>利用消衍射透镜列阵及光谱色散平滑实现焦斑均匀辐照
%A Jiang Xiu-Juan
%A Zhou Shen-Lei
%A Lin Zun-Qi
%A Zhu Jian
%A <br>江秀娟
%A 周申蕾
%A 林尊琪
%A 朱俭
%J 物理学报
%D 2006
%I 
%X A scheme employing a lens array and the technique of smoothing by spectral dispersion is presented for uniform irradiation on targets in inertial confinement fusion. Quasi-near field spots with a profile of sharp edge and flat top can be obtained with a diffraction-weakened lens array, while the speckles imposed on the spot by beamlets interference can be smoothed by spectral dispersion. Simulation results indicate that this scheme is a good candidate for improving the irradiation uniformity. The dependence of the smoothing performance on the characteristics of phase modulation and dispersion is further discussed, and it is found that parameters of the system of spectral dispersion and lens array must be chosen carefully to make optimal compromise between uniformity and usable energy of the laser beam.
%K smoothing by spectral dispersion
%K lens array
%K diffraction
%K beamlets interference<br>光谱色散平滑
%K 透镜列阵
%K 衍射
%K 多光束干涉
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=7FADEA3679B25994&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=708DD6B15D2464E8&sid=A84BA6C7FF555FCF&eid=68D6B54CF49CFA31&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=10