Third-order nonlinearity by the inverse Faraday effect in planar magnetoplasmonic structures

被引：25
作者：
Im, Song-Jin [1 ]
Ri, Chol-Song [1 ]
Ho, Kum-Song [1 ]
Herrmann, Joachim [2 ]
机构：
[1] Kim Il Sung Univ, Dept Phys, Pyongyang, North Korea
[2] Max Born Inst Nonlinear Opt & Short Pulse Spect, Max Born Str 2a, D-12489 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2017年 / 96卷 / 16期
关键词：
SUBWAVELENGTH WAVE-GUIDES; MAGNETO-PLASMONICS; MAGNETIZATION;
D O I：
10.1103/PhysRevB.96.165437
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We predict a different type of ultrafast third-order nonlinearity of surface plasmon polaritons (SPPs) in planar magnetoplasmonic structures caused by the inverse Faraday effect (IFE). Planar SPPs with a significant longitudinal component of the electric field act via the IFE as an effective transverse magnetic field. Its response to the plasmon propagation leads to strong ultrafast self-action which manifests itself through a third-order nonlinearity. We derive a general formula and analytical expressions for the IFE-related nonlinear susceptibility for two specific planar magnetoplasmonic structures from the Lorentz reciprocity theorem. Our estimations predict a very large nonlinear third-order nonlinear susceptibility exceeding those of typical metals such as gold.
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页数：6
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