P. Chen et al., TRANSFORMER RATIO AND PULSE SHAPING IN LASER WAKEFIELD ACCELERATOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 410(3), 1998, pp. 488-492
We show that, in complete analogy to the electron-beam driven Plasma W
akefield Accelerator (PWFA), an optimal transformer ratio can be attai
ned in the laser driven Laser Wakefield Accelerator (LWFA), by properl
y shaping the longitudinal profile of the driving laser pulse. The con
cept of transformer ratio in LWFA is introduced and the optimal laser
pulse shape is derived in the linear regime of laser-plasma interactio
n. We show that in the linear regime of plasma perturbation the requir
ement for the laser pulse shape and the resultant optimal transformer
ratio are identical for LWFA and PWFA concepts. (C) 1998 Published by
Elsevier Science B.V. All rights reserved.