title: Plasma waveguide array induced by filament interaction.
abstract: 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.
authors.affiliation: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Yang
authors.forename: Jian
authors.initials: J
authors.lastname: Wu
authors.forename: Yan
authors.initials: Y
authors.lastname: Peng
authors.forename: Yuqi
authors.initials: Y
authors.lastname: Tong
authors.forename: Peifen
authors.initials: P
authors.lastname: Lu
authors.forename: Liang'en
authors.initials: L
authors.lastname: Ding
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu
authors.forename: Heping
authors.initials: H
authors.lastname: Zeng