Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Generation of quasimonoenergetic electron bunches with 80-fs laser pulses
AU - Hidding, B.
AU - Amthor, K.-U.
AU - Liesfeld, B.
AU - Schwoerer, H.
AU - Karsch, S.
AU - Geissler, M.
AU - Veisz, L.
AU - Schmid, K.
AU - Gallacher, J.G.
AU - Jamison, S.P.
AU - Jaroszynski, D.
AU - Pretzler, G.
AU - Sauerbrey, R.
PY - 2006/3/15
Y1 - 2006/3/15
N2 - Highly collimated, quasimonoenergetic multi-MeV electron bunches were generated by the interaction of tightly focused, 80-fs laser pulses in a high-pressure gas jet. These monoenergetic bunches are characteristic of wakefield acceleration in the highly nonlinear wave breaking regime, which was previously thought to be accessible only by much shorter laser pulses in thinner plasmas. In our experiment, the initially long laser pulse was modified in underdense plasma to match the necessary conditions. This picture is confirmed by semianalytical scaling laws and 3D particle-in-cell simulations. Our results show that laser-plasma interaction can drive itself towards this type of laser wakefield acceleration even if the initial laser and plasma parameters are outside the required regime.
AB - Highly collimated, quasimonoenergetic multi-MeV electron bunches were generated by the interaction of tightly focused, 80-fs laser pulses in a high-pressure gas jet. These monoenergetic bunches are characteristic of wakefield acceleration in the highly nonlinear wave breaking regime, which was previously thought to be accessible only by much shorter laser pulses in thinner plasmas. In our experiment, the initially long laser pulse was modified in underdense plasma to match the necessary conditions. This picture is confirmed by semianalytical scaling laws and 3D particle-in-cell simulations. Our results show that laser-plasma interaction can drive itself towards this type of laser wakefield acceleration even if the initial laser and plasma parameters are outside the required regime.
U2 - 10.1103/PhysRevLett.96.105004
DO - 10.1103/PhysRevLett.96.105004
M3 - Journal article
VL - 96
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 10
M1 - 105004
ER -