Enhanced Second Harmonic Generation in AU/AI2O3/AU absorber

5th International Conference on Advances in Optoelectronics and Micro/Nano-optics

Huang, Fenglun^1 ; Bai, Songang^1 ; Li, Qiang^1 ; Qu, Yurui^1 ; Min, Qiu^1

State Key Laboratory of Modem Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou

310027, China^1

关键词: Absorption efficiency;    Au/alumina;    Double layers;    Metal insulator metals;    Metamaterial absorbers;    Nonlinear photonics;    Second harmonic signals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/680/1/012020/pdf
DOI  :  10.1088/1742-6596/680/1/012020

来源: IOP

【 摘 要 】

A kind of metal-insulator-metal (MIM) metamaterial absorber for generating second harmonic signal is investigated. The absorbers exhibit high absorption efficiency at the dip and notably enhance the generated second harmonic signal by a factor of over 30, in contrast to an Au/alumina double-layer without Au disk on the top. This study demonstrates the potential of metamaterial absorber for nonlinear photonics.