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

被引：2

作者：

Bagnoud, V ^{[1
,2
]}

Hornung, J. ^{[1
,2
]}

Afshari, M. ^{[1
]}

Eisenbarth, U. ^{[1
]}

Brabetz, C. ^{[1
]}

Major, Z. ^{[1
,2
]}

Zielbauer, B. ^{[1
]}

机构：

[1] GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany

[2] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

来源：

HIGH POWER LASER SCIENCE AND ENGINEERING | 2019年 / 7卷

基金：

欧盟地平线“2020”;

关键词：

beam shaping; high-power laser; phase plate; short-pulse laser; NONLINEAR REFRACTIVE-INDEX; DISPERSION;

D O I：

10.1017/hpl.2019.48

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

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.

引用

页数：6

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