Laser Wakefield Acceleration Using Mid-Infrared Laser Pulses

We study a laser wakefield acceleration driven by mid-infrared （mid-IR） laser pulses through two-dimensional particle-in-cell simulations. Since a mid-IR laser pulse can deliver a larger ponderomotive force as compared with the usual 0.8 μm wavelength laser pulse, it is found that electron self-inje...

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Bibliographic Details
Published in	Chinese physics letters Vol. 33; no. 9; pp. 77 - 81
Main Author	张国博 N. A. M. Hafz 马燕云钱列加邵福球盛政明
Format	Journal Article
Language	English
Published	01.09.2016
Subjects	中红外激光光脉冲产生尾波场电子束等离子体密度红外激光脉冲脉冲激光驱动激光
Online Access	Get full text
ISSN	0256-307X 1741-3540
DOI	10.1088/0256-307X/33/9/095202

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Summary:	We study a laser wakefield acceleration driven by mid-infrared （mid-IR） laser pulses through two-dimensional particle-in-cell simulations. Since a mid-IR laser pulse can deliver a larger ponderomotive force as compared with the usual 0.8 μm wavelength laser pulse, it is found that electron self-injection into the wake wave occurs at an earlier time, the plasma density threshold for injection becomes lower, and the electron beam charge is substantially enhanced. Meanwhile, our study also shows that quasimonoenergetic electron beams with a narrow energy-spread can be generated by using mid-IR laser pulses. Such a mid-IR laser pulse can provide a feasible method for obtaining a high quality and high charge electron beam. Therefore, the current efforts on constructing mid-IR terawatt laser systems can greatly benefit the laser wakefield acceleration research.
Bibliography:	11-1959/O4 Guo-Bo Zhang1,2, N. A. M. Hafz2,3, Yan-Yun1,3, Lie-Jia Qian2,3, Fu-Qiu Shao1, Zheng-Ming Sheng2,3,4（ College of Science, National University of Defense Technology, Changsha 410073 2Key Laboratory for Laser Plasmas （MOE） and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 3 Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240 4SUPA, Department of Physics, University of Strathclyde, Glasgow G40NG, UK） We study a laser wakefield acceleration driven by mid-infrared （mid-IR） laser pulses through two-dimensional particle-in-cell simulations. Since a mid-IR laser pulse can deliver a larger ponderomotive force as compared with the usual 0.8 μm wavelength laser pulse, it is found that electron self-injection into the wake wave occurs at an earlier time, the plasma density threshold for injection becomes lower, and the electron beam charge is substantially enhanced. Meanwhile, our study also shows that quasimonoenergetic electron beams with a narrow energy-spread can be generated by using mid-IR laser pulses. Such a mid-IR laser pulse can provide a feasible method for obtaining a high quality and high charge electron beam. Therefore, the current efforts on constructing mid-IR terawatt laser systems can greatly benefit the laser wakefield acceleration research.
ISSN:	0256-307X 1741-3540
DOI:	10.1088/0256-307X/33/9/095202