Dielectric laser electron acceleration in a dual pillar grating with a distributed Bragg reflector

被引：41

作者：

Yousefi, Peyman ^{[1
]}

Schoenenberger, Norbert ^{[1
]}

Mcneur, Joshua ^{[1
]}

Kozak, Martin ^{[1
,2
]}

Niedermayer, Uwe ^{[3
]}

Hommelhoff, Peter ^{[1
,4
]}

机构：

[1] Friedrich Alexander Univ Erlangen Nurnberg, Dept Phys, Staudtstr 1, D-91058 Erlangen, Germany

[2] Charles Univ Prague, Fac Math & Phys, Ke Karlovu 3, CR-12116 Prague 2, Czech Republic

[3] Tech Univ Darmstadt, Inst Accelerator Sci & Electromagnet Fields TEMF, Schlossgartenstr 8, D-64289 Darmstadt, Germany

[4] Wax Planck Inst Sci Light, Staudtstr 2, D-91058 Erlangen, Germany

来源：

OPTICS LETTERS | 2019年 / 44卷 / 06期

基金：

欧洲研究理事会;

关键词：

SUB-RELATIVISTIC ELECTRONS; DESIGN;

D O I：

10.1364/OL.44.001520

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the efficacy of a novel design for dielectric laser accelerators by adding a distributed Bragg reflector (DBR) to a dual pillar grating accelerating structure. This mimics a double-sided laser illumination, resulting in an enhanced longitudinal electric field while reducing the deflecting transverse effects when compared to single-sided illumination. We improve the coupling efficiency of the incident electric field into the accelerating mode by 57%. The 12 mu m long structures accelerate sub-relativistic 28 keV electrons with gradients of up to 200 MeV/m in theory and 133 MeV/m in practice. This Letter shows how lithographically produced nano-structures help to make novel laser accelerators more efficient. (C) 2019 Optical Society of America

引用

页码：1520 / 1523

页数：4

共 21 条

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