Luo Ye, Zhang Wei, Huang Yidong, Zhao Jianhui, Peng Jiangde
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China.
Opt Lett. 2004 Dec 15;29(24):2920-2. doi: 10.1364/ol.29.002920.
We present a positive-negative refraction effect in which, under certain conditions, an incident plane wave launched into a photonic crystal excites a positive-refracted Bloch wave and a negative-refracted Bloch wave simultaneously, both of which maintain the polarization. By utilizing this phenomenon, wide-angle beam splitting can be realized at the microscale level. Numerical simulations are employed to demonstrate this anomalous refraction behavior.
我们展示了一种正负折射效应，在某些条件下，入射到光子晶体中的平面波会同时激发一个正折射布洛赫波和一个负折射布洛赫波，且二者都保持偏振状态。利用这一现象，可以在微尺度水平上实现广角光束分裂。采用数值模拟来证明这种反常折射行为。
