Plasmonic nanoantenna design and fabrication based on evolutionary optimization

被引：25

作者：

Feichtner, Thorsten ^{[1
,2
]}

Selig, Oleg ^{[1
,3
]}

Hecht, Bert ^{[1
]}

机构：

[1] Univ Wurzburg, Rontgen Res Ctr Complex Mat Res RCCM, Dept Expt Phys 5, Nanoopt & Biophoton Grp,Phys Inst, D-97074 Wurzburg, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie, Inst Nanoarchitectures Energy Convers, Hahn Meitner Pl 1, D-14109 Berlin, Germany

[3] FOM Inst AMOLF, Biomol Photon Grp, Sci Pk 104, NL-1098 XG Amsterdam, Netherlands

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 10期

关键词：

SPLIT-RING-RESONATORS; RESONANCES; ANTENNAS;

D O I：

10.1364/OE.25.010828

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nanoantennas can tailor light-matter interaction for optical communication, sensing, and spectroscopy. Their design is inspired by radio-frequency rules which partly break down at optical frequencies. Here we find unexpected nanoantenna designs exhibiting strong light localization and enhancement by using a general and scalable evolutionary algorithm based on FDTD simulations that also accounts for geometrical fabrication constraints. The resulting nanoantennas are "printed" directly by focused-ion beam milling and their fitness ranking is validated experimentally by two-photon photoluminescence. We find the best antennas' operation principle deviating from that of classical radio wave-inspired designs. Our work sets the stage for a widespread application of evolutionary optimization in nano photonics. (C) 2017 Optical Society of America

引用

页码：10828 / 10842

页数：15

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