Collimations and negative refractions by slabs of 2D photonic crystals with periodically-aligned tube-type air holes.
The FDTD method was applied to investigate the two-dimensional PhC slabs with periodically-aligned tube-type air holes. By numerical simulations, we found negative refraction behaviors by tuning the incident angle into the narrow negative-refraction angle range, and the collimation effects were analyzed by means of wave vector diagrams.
Zhang
Hao
H
Zhu
Heyuan
H
Qian
Liejia
L
Fan
Dianyuan
D