TY - JOUR
T1 - Self-regulated propagation of intense infrared pulses in elongated soft-x-ray plasma amplifiers
AU - Oliva, Eduardo
AU - Depresseux, Adrien
AU - Tissandier, Fabien
AU - Gautier, Julien
AU - Sebban, Stéphane
AU - Maynard, Gilles
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/8/26
Y1 - 2015/8/26
N2 - Increasing the electron density of collisionally pumped plasma-based soft-x-ray lasers offers promising opportunities to deliver ultrashort pulses. However, strong nonlinear effects, such as overionization-induced refraction and self-focusing, hinder the propagation of the laser beam and thus the generation of elongated volume of lasing ions to be pumped. Using a particle-in-cell code and a ray-tracing model we demonstrate that optically preformed waveguides allow for addressing those issues through a self-regulation regime between self-focusing and overionization processes. As a result, guiding intense pulses over several millimeters leads to the implementation of saturated plasma amplifiers.
AB - Increasing the electron density of collisionally pumped plasma-based soft-x-ray lasers offers promising opportunities to deliver ultrashort pulses. However, strong nonlinear effects, such as overionization-induced refraction and self-focusing, hinder the propagation of the laser beam and thus the generation of elongated volume of lasing ions to be pumped. Using a particle-in-cell code and a ray-tracing model we demonstrate that optically preformed waveguides allow for addressing those issues through a self-regulation regime between self-focusing and overionization processes. As a result, guiding intense pulses over several millimeters leads to the implementation of saturated plasma amplifiers.
U2 - 10.1103/PhysRevA.92.023848
DO - 10.1103/PhysRevA.92.023848
M3 - Article
AN - SCOPUS:84940757592
SN - 1050-2947
VL - 92
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 023848
ER -