Second-harmonic generation from magnetic metamaterials

被引：667

作者：

Klein, Matthias W.

Enkrich, Christian

Wegener, Martin

Linden, Stefan

机构：

[1] Univ Karlsruhe, Inst Angew Phys, D-76131 Karlsruhe, Germany

[2] Univ Karlsruhe, DFG, Ctr Funct Nanostruct, D-76128 Karlsruhe, Germany

[3] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

SCIENCE | 2006年 / 313卷 / 5786期

关键词：

D O I：

10.1126/science.1129198

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We observe second-harmonic generation from metamaterials composed of split-ring resonators excited at 1.5-micrometer wavelength. Much larger signals are detected when magnetic-dipole resonances are excited, as compared with purely electric-dipole resonances. The experiments are consistent with calculations based on the magnetic component of the Lorentz force exerted on metal electrons - an intrinsic second-harmonic generation mechanism that plays no role in natural materials. This unusual mechanism becomes relevant in our work as a result of the enhancement and the orientation of the local magnetic fields associated with the magnetic-dipole resonances of the split-ring resonators.

引用

页码：502 / 504

页数：3