Simulation of the excitation of quasi-plane wake waves in a plasma by a resonant sequence of laser pulses with a variable envelope

Multi-pulse laser wakefield acceleration: a new route to efficient, high-repetition-rate plasma accelerators and high flux radiation sources

“…We note that MP-LWFA was studied theoretically [8][9][10][11][12][13][14][15][16] in the 1990s, but has yet to be demonstrated. Driving plasma wakefields with a train of particle bunches or a modulated particle bunch has also been investigated theoretically [17,18], and generation of a wakefield of amplitude − 22 MV m 1 by a train of seven electron bunches has been demonstrated experimentally [19].…”

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

“…The MP-LWFA concept has been investigated theoretically [39][40][41][42][43][44][45][46][47] but has not previously been demonstrated. It can be considered to be a generalization of the beatwave scheme since, in principle: the pulses in the train do not have to be mutually coherent; the durations of the pulses are not necessarily related to their separation; and the separations of the pulses within the pulse train can be adjusted to avoid saturation of the plasma wave.…”

“…can in principle be different. The MP-LWFA concept has been investigated theoretically [40][41][42][43][44][45][46][47][48] but has not previously been demonstrated experimentally. The idea of using a long pulse with temporally non-uniform modulation to overcome the Rosenbluth-Liu limit was proposed, within the context of PBWA, by Deutsch et al [49], who suggested using a pair of frequency-chirped laser pulses.…”