Attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian laser pulses

被引：61

作者：

Hu, Li-Xiang ^{[1
]}

Yu, Tong-Pu ^{[1
,2
]}

Sheng, Zheng-Ming ^{[2
,3
,4
,5
]}

Vieira, Jorge ^{[6
]}

Zou, De-Bin ^{[1
]}

Yin, Yan ^{[7
]}

McKenna, Paul ^{[2
]}

Shao, Fu-Qiu ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China

[2] Univ Strathclyde, SUPA Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[3] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Key Lab Laser Plasmas MoE, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China

[5] Tsung Dao Lee Inst, Shanghai 200240, Peoples R China

[6] Univ Lisbon, Inst Super Tecn, Inst Plasmas & Fusao Nucl, GoLP, P-1049001 Lisbon, Portugal

[7] Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

基金：

英国工程与自然科学研究理事会;

关键词：

DIFFRACTION; IONIZATION;

D O I：

10.1038/s41598-018-25421-9

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Generation of attosecond bunches of energetic electrons offers significant potential from ultrafast physics to novel radiation sources. However, it is still a great challenge to stably produce such electron beams with lasers, since the typical subfemtosecond electron bunches from laser-plasma interactions either carry low beam charge, or propagate for only several tens of femtoseconds. Here we propose an all-optical scheme for generating dense attosecond electron bunches via the interaction of an intense Laguerre-Gaussian (LG) laser pulse with a nanofiber. The dense bunch train results from the unique field structure of a circularly polarized LG laser pulse, enabling each bunch to be phase-locked and accelerated forward with low divergence, high beam charge and large beam-angular-momentum. This paves the way for wide applications in various fields, e.g., ultrabrilliant attosecond x/gamma-ray emission.

引用

页数：9

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