Abstract
Ultra-strong and ultra-short laser pulses can accelerate free electrons and generate attosecond radiation pulses. In this paper, circularly polarized Laguerre-Gaussian (LG) vortex light beam (VLB) is used to accelerate the electrons. A single electron with an incident energy of 2.1 MeV has been simulated to interact with LG-VLB with a half-waist beam width of 5λ. Numerical simulations show that the vortex light has a special converging effect on the electrons. The electrons distributed near the center of the spot generate a velocity component with the motion vector toward the center of the spot. Different from conventional activation, the electron radiation field has a non-uniform distribution, and the radiation field close to the concentrated lateral intensity has an even more strong acceleration effect on the electrons. The pulse width of the electron radiation is 2 attoseconds(as) which is much smaller than the pulse generated by using an ordinary intense laser and Gaussian beam. It has an advantage of reducing the intensity of the laser that generates a single attosecond pulse, and its structure is simple and easy to implement, it has more power in probing the electron dynamics process and the phenomenon of atomic transition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.