Localized surface modes in parity-time-symmetric potentials.
Localized surface modes in parity-time-symmetric potentials.
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DOI：
10.1364/ol.39.005154
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发表时间：
2014-09
期刊：
影响因子：
3.6
通讯作者：
Huagang Li;Zhiwei Shi;Xiujuan Jiang;Xing Zhu;T. Lai;Chaohong Lee
中科院分区：
文献类型：
--
作者：
Huagang Li;Zhiwei Shi;Xiujuan Jiang;Xing Zhu;T. Lai;Chaohong Lee
我们研究了具有奇偶时间对称性的线性和非线性介质界面上的光束传输。从解析和数值上发现了一类新的二维局域表面模(LSM)。如果势沿平行于两种介质界面的方向是奇偶时间不变的，则可以存在稳定的LSM。否则，如果势沿垂直于两种介质界面的方向是奇偶时间不变的，则不存在稳定的LSM。
We investigate light-beam propagation along the interface between linear and nonlinear media with parity-time symmetry. A novel class of two-dimensional localized surface modes (LSMs) is found analytically and numerically. If the potential is parity-time invariant along the direction parallel to the interface between the two media, stable LSMs can exist. Otherwise, if the potential is parity-time invariant along the direction perpendicular to the interface between the two media, there are no stable LSMs.