Enhanced second-harmonic generation by means of high-power confinement in a photovoltaic soliton-induced waveguide.
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.
Lou
Cibo
C
TEDA Applied Physics School, Photonics Center, College of Physics Science, Nankai University, Tianjin, China.
Xu
Jingjun
J
Qiao
Haijun
H
Zhang
Xinzheng
X
Chen
Yunlin
Y
Chen
Zhigang
Z