Electron acceleration by tightly focused radially polarized few-cycle laser pulses

doi:10.1088/1674-1056/21/2/024101

Abstract Within the framework of plane-wave angular spectrum analysis of the electromagnetic field structure, a solution valid for tightly focused radially polarized few-cycle laser pulses propagating in vacuum is presented. The resulting field distribution is significantly different from that based on the paraxial approximation for pulses with either small or large beam diameters. We compare the electron accelerations obtained with the two solutions and find that the energy gain obtained with our new solution is usually much larger than that with the paraxial approximation solution.

Keywords: radially polarized laser pulses few-cycle pulses plane-wave angular spectrum analysis direct laser acceleration of electrons

Received: 10 May 2011
Revised: 19 August 2011
Accepted manuscript online:

PACS:	41.75.Jv	(Laser-driven acceleration?)
	42.25.Bs	(Wave propagation, transmission and absorption)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10734130, 10935002, and 11075105) and the National Basic Research Program of China (Grant No. 2009GB105002).

Corresponding Authors: Sheng Zheng-Ming,zmsheng@sjtu.edu.cn
E-mail: zmsheng@sjtu.edu.cn

Cite this article:

Liu Jin-Lu(刘晋陆), Sheng Zheng-Ming(盛政明), and Zheng Jun(郑君) Electron acceleration by tightly focused radially polarized few-cycle laser pulses 2012 Chin. Phys. B 21 024101

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