Phase-matched nonlinear second-harmonic generation in plasmonic metasurfaces

Nanophotonics

article

S. Hamed Shams Mousavi¹  Robert Lemasters²  Feng Wang²  Ali Eshaghian Dorche¹  Hossein Taheri¹  Ali A. Eftekhar¹  Hayk Harutyunyan²  Ali Adibi¹ 

[1] School of Electrical and Computer Engineering, Georgia Institute of Technology;Department of Physics, Emory University

关键词: plasmonics;    metasurface;    nanoantenna;    nonlinear optics;    second harmonic generation;   

DOI  :  10.1515/nanoph-2018-0181

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

The phase matching between the propagating fundamental and nonlinearly generated waves plays an important role in the efficiency of the nonlinear frequency conversion in macroscopic crystals. However, in nanoscale samples, such as nanoplasmonic structures, the phase-matching condition is often ignored due to the sub-wavelength nature of the materials. Here, we first show that the phase matching of the lattice plasmon modes at the fundamental and second-harmonic frequencies in a plasmonic nanoantenna array can effectively enhance the surface-enhanced second-harmonic generation. Additionally, a significant enhancement of the second-harmonic generation is demonstrated using stationary band-edge lattice plasmon modes with zero phase.

【 授权许可】

CC BY