Implementation of a phase plate for the generation of homogeneous focal-spot intensity distributions at the high-energy short-pulse laser facility PHELIX  

作　　者：V.Bagnoud J.Hornung M.Afshari U.Eisenbarth C.Brabetz Z.Major B.Zielbauer 

机构地区：[1]GSI Helmholtzzentrum fur Schwerionenforschung GmbH,Planckstrasse 1,64291 Darmstadt,Germany [2]Helmholtz Institute Jena,Frobelstieg 3,07743 Jena,Germany

出　　处：《High Power Laser Science and Engineering》2019年第4期33-38,共6页高功率激光科学与工程（英文版）

基　　金：European Union’s Horizon 2020 research and innovation program under grant agreement number 633053。

摘　　要：We propose and demonstrate the use of random phase plates(RPPs)for high-energy sub-picosecond lasers.Contrarily to previous work related to nanosecond lasers,an RPP poses technical challenges with ultrashort-pulse lasers.Here,we implement the RPP near the beginning of the amplifier and image-relay it throughout the laser amplifier.With this,we obtain a uniform intensity distribution in the focus over an area 1600 times the diffraction limit.This method shows no significant drawbacks for the laser and it has been implemented at the PHELIX laser facility where it is now available for users.

关 键 词：beam shaping high-power laser phase plate short-pulse laser 

分 类 号：TN24[电子电信—物理电子学]