TY - JOUR
T1 - Phase-locked laser-wakefield electron acceleration
AU - Caizergues, C.
AU - Smartsev, S.
AU - Malka, V.
AU - Thaury, C.
N1 - We acknowledge support from the European Research Council through the project XFive (grant no. 339128), the French Agence Nationale de la Recherche (ANR) under reference ANR-19-TERC-0001-01 (project TGV), Gerry Schwartz and Heather Reisman, Israel Science Foundation, VATAT support and the French embassy in Israel through a Chateaubriand fellowship. Contributions - C.C. and C.T. jointly proposed the concept of phase-locked acceleration, using axiparabola and spatio-temporal couplings. The idea was then developed by C.C. with advice from V.M. and C.T. C.C. and C.T. established the theoretical background, while C.C. and S.S. developed codes for optimizing and simulating axiparabola focus. Simulations were carried out by C.C. Finally, C.C. and C.T. wrote the manuscript with help from V.M. and S.S.
PY - 2020/7/6
Y1 - 2020/7/6
N2 - Subluminal and superluminal light pulses have attracted considerable attention in recent decades(1-4), opening perspectives in telecommunications, optical storage and fundamental physics(5). Usually achieved in matter, superluminal propagation has also been demonstrated in vacuum with quasi-Bessel beams(6,7)or spatio-temporal couplings(8,9). Although, in the first case, the propagation was diffraction free, but with hardly controllable pulse velocities and limited to moderate intensities, in the second, high tunability was achieved, but with substantially lengthened pulse durations. Here we report a new concept that extends these approaches to relativistic intensities and ultrashort pulses by mixing spatio-temporal couplings and quasi-Bessel beams to independently control the light velocity and intensity. When used to drive a laser-plasma accelerator(10), this concept leads to a new regime that is dephasing free, where the electron beam energy gain increases by more than one order of magnitude.
AB - Subluminal and superluminal light pulses have attracted considerable attention in recent decades(1-4), opening perspectives in telecommunications, optical storage and fundamental physics(5). Usually achieved in matter, superluminal propagation has also been demonstrated in vacuum with quasi-Bessel beams(6,7)or spatio-temporal couplings(8,9). Although, in the first case, the propagation was diffraction free, but with hardly controllable pulse velocities and limited to moderate intensities, in the second, high tunability was achieved, but with substantially lengthened pulse durations. Here we report a new concept that extends these approaches to relativistic intensities and ultrashort pulses by mixing spatio-temporal couplings and quasi-Bessel beams to independently control the light velocity and intensity. When used to drive a laser-plasma accelerator(10), this concept leads to a new regime that is dephasing free, where the electron beam energy gain increases by more than one order of magnitude.
UR - http://www.scopus.com/inward/record.url?scp=85087475626&partnerID=8YFLogxK
U2 - https://doi.org/10.1038/s41566-020-0657-2
DO - https://doi.org/10.1038/s41566-020-0657-2
M3 - مقالة
SN - 1749-4885
VL - 14
SP - 475
EP - 479
JO - Nature Photonics
JF - Nature Photonics
IS - 8
ER -