Plasma waveguide array induced by filament interaction.
We demonstrate that interference-assisted coalescence of two noncollinearly overlapped filaments creates a wavelength-scale periodic plasma density modulation to guide the input pulses equivalently as a photonic crystal plasma waveguide. The periodic self-channeling is evidenced by the direct observation of the filament coalescence, which reveals wavelength-scale spatial widths and periodicity dependent on the crossing angles and intensity ratios between the incident filaments.
Yang
Xuan
X
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
Wu
Jian
J
Peng
Yan
Y
Tong
Yuqi
Y
Lu
Peifen
P
Ding
Liang'en
L
Xu
Zhizhan
Z
Zeng
Heping
H