Single-excitation dual-color coherent lasing by tuning resonance energy transfer processes in porous structured nanowires.
Single-excitation dual-color coherent lasing was achieved in a mixed random system of a binary dye and the suspension of gold-silver porous nanowires with plenty of nanogaps. This greatly enhanced the local electromagnetic field in the visible range and guaranteed a low threshold and high Q factor (>10 000) operator for simultaneous dual-color lasing. By tuning the resonance energy transfer process in the stimulated emission, triple output modes (single chartreuse lasing, chartreuse and red dual-color lasing, and single red coherent lasing) were easily obtained. This triple-mode coherent random lasing introduces a new approach to designing multi-functional micro-optoelectronic devices for multi-color speckle-free imaging and interference.
Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, China100875. zhnwang@bnu.edu.cn dhliu@bnu.edu.cn.
Zhaona
Z
Wang
Xiaoyu
X
Shi
Ruomeng
R
Yu
Sujun
S
Wei
Qing
Q
Chang
Yanrong
Y
Wang
Dahe
D
Liu
Zhong Lin
ZL
Wang