%0 Journal Article
%T Performance of multilayer dielectric grating irradiated by ultrashort optical pulse<br>多层介质膜脉冲宽度压缩光栅与超短脉冲作用时的性能分析
%A Liu Shi-Jie
%A Ma Jian-Yong
%A Shen Zi-Cai
%A Kong Wei-Jin
%A Shen Jian
%A Jin Yun-Xia
%A Zhao Yuan-An
%A Shao Jian-Da
%A Fan Zheng-Xiu
%A <br>刘世杰
%A 麻健勇
%A 沈自才
%A 孔伟金
%A 沈健
%A 晋云霞
%A 赵元安
%A 邵建达
%A 范正修
%J 物理学报
%D 2007
%I 
%X In the ultrashort pulse high-energy laser system based on chirped pulse amplification technique, multilayer dielectric grating with good output waveform and high laser induced damage threshold plays an important role. Based on Fourier spectral transform and rigorous modal method, optical characteristic of multilayer dielectric grating under irradiation of ultrashort optical pulse is analyzed. The results show that the reflected pulse at the -1 order exhibits asymmetrical Gaussian shape with oscillatory tail in the front edge and decreasing energy when the reflection bandwidth is narrower than the frequency bandwidth of the incident pulse with Guassian shape. The effect of structure parameters of multilayer dielectric grating on the reflection bandwidth are discussed in detail, which provides guidance to the design of multilayer dielectric grating with desired reflection bandwidth. Finally, near-field distribution of multilayer dielectric grating is analyzed to study its damages induced by ultrashort pulses.
%K pulse compression gratings
%K Fourier spectral transform
%K modal theory
%K damage threshold<br>脉冲压缩光栅
%K 傅里叶谱变换
%K 模式理论
%K 损伤阈值
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1D518EC69B408FF8&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=5D311CA918CA9A03&sid=BB5F5D0FB9EB5E5A&eid=024AF075FD417398&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=20