Efficient guiding and focusing of intense laser pulse using periodic thin slits  

作　　者：L.Xu T.W.Huang K.Jiang C.N.Wu H.Peng P.C.hen R.Li H.B.Zhuo C.T.Zhou 

机构地区：[1]Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology,Center for Intense Laser ApplicationTechnology,and College of Engineering Physics,Shenzhen Technology University,Shenzhen 518118,People’s Republic of China

出　　处：《Matter and Radiation at Extremes》2024年第4期29-39,共11页极端条件下的物质与辐射（英文）

基　　金：supported by the National Key R&D Program of China(Grant No.2022YFA1603300);the National Natural Science Foundation of China(Grant Nos.12175154,12205201,12005149,and 11975214);the Shenzhen Science and Technology Program(Grant No.RCYX20221008092851073);used under UK EPSRC Contract Nos.EP/G055165/1 and EP/G056803/1.

摘　　要：Slits have been widely used in laser-plasma interactions as plasma optical components for generating high-harmonic light and controlling laser-driven particle beams.Here,we propose and demonstrate that periodic thin slits can be regarded as a new breed of optical elements for efficient focusing and guiding of intense laser pulse.The fundamental physics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the pure diffractive focusing regime.In addition,the interaction of an intense laser pulse with periodic thin slits makes it feasible to achieve multifold enhancement in both laser intensity and energy transfer efficiency compared with conventional waveguides.These results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applications.

关 键 词：laser pulse INTENSE 

分 类 号：TN24[电子电信—物理电子学]