Abstract This paper investigates the properties of the ultrashort pulsed beam aimed to the capture-and-acceleration-scenario (CAS) vacuum electron acceleration. The result shows that the spatiotemporal distribution of the phase velocity, the longitudinal component of the electric field and the acceleration quality factor are qualitatively similar to that of the continuous-wave Gaussian beam, and are slightly influenced by the spatiotemporal coupling of the ultrashort pulsed beam. When the pulse is compressed to an ultrashort one in which the pulse duration TFWHM <5 T0, the variation of the maximum net energy gain due to the carrier-envelope phase is a crucial disadvantage in the CAS acceleration process.
Received: 12 August 2005
Revised: 12 June 2006
Accepted manuscript online:
PACS:
42.60.Jf
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
(Ultrafast processes; optical pulse generation and pulse compression)
Fund: Project supported by the
Natural Science Foundation of China (Grant Nos 60538010,
10335030 and 10376009), the Science and Technology Commission of
Shanghai, China (Grant Nos 05JC14005 and 05SG02), and the
Graduate
Science and Technology Innovation Foundat
Cite this article:
Lu Da-Quan(陆大全), Qian Lie-Jia(钱列加), Li Yong-Zhong(李永忠), and Fan Dian-Yuan(范滇元) Influence of spatiotemporal coupling on the capture-and-acceleration-scenario vacuum electron acceleration by ultrashort pulsed laser beam 2007 Chinese Physics 16 88
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