切伦科夫辐射
非线性系统
物理
极化(电化学)
辐射
简并能级
色散(光学)
光学
非线性光学
量子电动力学
计算物理学
量子力学
探测器
物理化学
化学
作者
Huaijin Ren,Xiaotie Deng,Yuanlin Zheng,Ning An,Xianfeng Chen
标识
DOI:10.1103/physrevlett.108.223901
摘要
By using ultrathin nonlinear media, the phase velocity of nonlinear polarization waves can be continuously adjusted. We realized nonlinear Cherenkov radiation (NCR) in an anomalous dispersion medium experimentally, which breaks the minimum speed limit of NCR. This modified nonlinear Cherenkov radiation has two new special states with respect to its prior, i.e., the degenerate state and extreme state. Also, periodically arranged ultrathin nonlinear media can enhance NCR and realize the nonlinear Smith-Purcell effect.
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