title: Enhanced second-harmonic generation by means of high-power confinement in a photovoltaic soliton-induced waveguide.
abstract: We present the first experimental demonstration of enhanced second-harmonic generation (SHG) by means of power confinement with a femtosecond laser in a photovoltaic soliton-induced waveguide. A dark spatial soliton created with a weak cw laser beam in a photovoltaic lithium niobate crystal induces an efficient waveguide for SHG, leading to a 60% enhancement of the conversion efficiency.
authors.affiliation: TEDA Applied Physics School, Photonics Center, College of Physics Science, Nankai University, Tianjin, China.
authors.forename: Cibo
authors.initials: C
authors.lastname: Lou
authors.forename: Jingjun
authors.initials: J
authors.lastname: Xu
authors.forename: Haijun
authors.initials: H
authors.lastname: Qiao
authors.forename: Xinzheng
authors.initials: X
authors.lastname: Zhang
authors.forename: Yunlin
authors.initials: Y
authors.lastname: Chen
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen