Observation of spatial asymmetry of THz oscillating electron plasma wave in a laser wakefield
The asymmetric spatial distribution of electron density perturbation is observed by using a frequency-domain interferometry technique. The wake amplitude of the outside bump is enhanced by the elliptical distribution of the pump laser pulse. This asymmetry can be explained with a two-dimensional analytical model expanded from cylindrically symmetric linear theory.
Takahashi
E
Center for Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan and Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto Utsunomiya, Tochigi 321.
Honda
H
Miura
E
Yugami
N
Nishida
Y
Katsura
K
Kondo
K