Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas

Heiko Linnenbank; Yevgen Grynko; Jens F(o)rstner; Stefan Linden

首页> 中文期刊> 《光：科学与应用（英文版）》 >Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas

Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Plasmonic nanoantennas provide unprecedented opportunities to concentrate light fields in subwavelength-sized volumes.By placing a nonlinear dielectric nanoparticle in such a hot spot,one can hope to take advantage of beth the field enhancement provided by nanoantennas and the large,nonlinear optical susceptibility of dielectric nanoparticles.To test this concept,we combine gold gap nanoantennas with second-order,nonlinear zinc sulfide nanoparticles,and perform second harmonic generation (SHG) spectroscopy onthe combined hybrid dielectric/plasmonic nanoantennas as well as on the individual constituents.We find that SHG from the bare gold nanoantennas,even though it should be forbidden due to symmetry reasons,is several orders of magnitude larger than that of the bare zinc sulfide nanoparticles.Even stronger second harmonic signals are generated by the hybrid dielectric/plasmonic nanoantennas.Control experiments with nanoantennas containing linear lanthanum fluoride nanoparticles reveal;however,that the increased SHG efficiency of the hybrid dielectric/plasmonic nanoantennas does not depend on the nonlinear optical susceptibility of the dielectric nanoparticles but is an effect of the modification of the dielectric environment.The combination of a hybrid dielectric/plasmonic nanoantenna,which is only resonant for the incoming pump light field,with a second nanoantenna,which is resonant for the generated second harmonic light,allows for a further increase in the efficiency of SHG.As the second nanoantenna mediates the coupling of the second harmonic light to the far field,this double-resonant approach also provides us with control over the polarization of the generated light.

著录项

来源
《光：科学与应用（英文版）》 |2016年第1期|65-71|共7页
作者
Heiko Linnenbank; Yevgen Grynko; Jens F(o)rstner; Stefan Linden;
展开▼
作者单位

Physikalisches Institut, Rheinische Friedrich-Wilhelms Universit(a)t Bonn, Bonn 53115, Germany;

Department of Electrical Engineering, Universit(a)t Paderborn, Paderborn 33102, Germany;

Department of Electrical Engineering, Universit(a)t Paderborn, Paderborn 33102, Germany;

Physikalisches Institut, Rheinische Friedrich-Wilhelms Universit(a)t Bonn, Bonn 53115, Germany;

展开▼
原文格式 PDF
正文语种 eng
中图分类
关键词

Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas

摘要

著录项

相关主题

期刊订阅