Open AccessEnhanced second-harmonic generation from nonlinear optical metamagnetics
Author(s) -
Shang Sun,
Ningbo Yi,
Wenjiao Yao,
Qinghai Song,
Shumin Xiao
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.026613
Subject(s) - second harmonic generation , metamaterial , optics , nonlinear system , nonlinear optics , materials science , magnetic field , high harmonic generation , energy conversion efficiency , local field , optoelectronics , physics , condensed matter physics , laser , quantum mechanics
We present a numerical simulation of second-harmonic generation (SHG) from a nonlinear magnetic metamaterial. By inserting a second-order nonlinear material in the high local field area of magnetic metamaterial, which consists of periodic arrays of paired thin silver strips, the convertion efficiency of SHG has been significantly enhanced by almost four orders of magnitude. The corresponding field patterns and further studies on dependance between SHG and symmetry of nonlinear crystal show that the increase of the conversion efficiency is attributed to the local field enhancement caused by the magnetic resonnance of the structure. Our researches provide an additional way to further improve the optical nonlinearity in nanostructures.