NDLI: Effects of sidelobes of focused flat-topped laser beams on vacuum electron acceleration

Content Provider	Springer Nature Link
Author	Wang, W. Wang, P.X. Ho, Y.K. Kong, Q. Gu, Y. Wang, S.J.
Copyright Year	2007
Abstract	Using three-dimensional test particle simulations, we investigated electrons accelerated by a focused flat-top laser beam at different intensities and flatness levels of the beam profile before focusing in vacuum. The results show that the presence of sidelobes around the main focal spot of the focused flat-top laser beam influences the optimum (as far as electron acceleration is concerned) initial momentum (and incident angle) of electrons for acceleration. The difference of initial conditions between laser beams with and without sidelobes becomes evident when the laser field is strong enough (a0>10, corresponding to intensities I>1×1020 W/cm2 for the laser wavelength λ=1 μm, where a0 is a dimensionless parameter measuring laser intensity). The difference becomes more pronounced at increasing a0. Because of the presence of sidelobes, there exist three typical CAS (capture and acceleration scenario) channels when a0≥30 (corresponding to I>1×1021 W/cm2 for λ=1 μm). The energy spread of the outgoing electrons is also discussed in detail.
Starting Page	273
Ending Page	279
Page Count	7
File Format	PDF
ISSN	09462171
Journal	Applied Physics B
Volume Number	88
Issue Number	2
e-ISSN	14320649
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-06-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physics and Applied Physics in Engineering Optical Spectroscopy, Ultrafast Optics Quantum Optics, Quantum Electronics, Nonlinear Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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