Title :
Wakefields generated by a tightly focused laser beam
Author :
Gordon, D.E. ; Hubbard, R.E. ; Sprangle, P. ; Hafizi, B.
Author_Institution :
Plasma Phys. Div., Naval Res. Lab., Washington, DC, USA
Abstract :
Wakefields generated by a tightly focused laser beam (w0 ≪ λp ≡ 2πc/wp) are characterized by a region of total electron cavitation near the head of the laser pulse, followed by a highly localized region of high electron density. The accelerating field maximizes at a spot size significantly less than λp. The focusing fields are generally larger than the accelerating field, and exhibit complex phasing detrimental for accelerator applications. Modeling of these wakefields is facilitated by the ponderomotive guiding center algorithm
Keywords :
electromagnetic field theory; wakefield accelerators; T3 laser; accelerating field; electron cavitation; focusing fields; ponderomotive guiding center algorithm; tightly focused laser beam; wakefields; Acceleration; Free electron lasers; Frequency; Laboratories; Laser beams; Laser theory; Maxwell equations; Optical pulse generation; Optical pulse shaping; Optical pulses;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988320
