Solution to causality paradox upon total reflection in optical planar waveguide.
A dispute about the existence of an additional time associated with the Goos-Hänchen shift has recently arisen. By analyzing light propagation in an optical planar waveguide with both the zigzag-ray model and the electromagnetic theory, we show in this paper that the Goos-Hänchen time really exists, and the total time delay upon total reflection is the sum of the group delay time and the Goos-Hänchen time. The causality paradox of total reflection of a TM wave upon an ideal nonabsorbing plasma mirror is also solved with the consideration of a negative Goos-Hänchen shift.
Department of Physics, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. liuxy424@sjtu.edu.cn
Xiangmin
X
Liu
Zhuangqi
Z
Cao
Pengfei
P
Zhu
Qishun
Q
Shen