Title :
Extraordinary optical transmission property of gold umbrella-like tap blocked nanohole arrays
Author :
Xue, H.D. ; Liu, Y.W. ; Dong, Z.D.
Author_Institution :
Coll. of Sci., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A novel umbrella-like structure is proposed with cap and additional plasmonic gold pillar blocking the nanohole arrays. We observed that the transmission efficiency is not reduced while the nanohole is blocked though the total light transmission area is reduced due to the additional gold pillar inside the hole. It can realize a giant transmission efficiency in the order of 87% that is much larger than the blocked one only by nanocap, which is due to the stronger coupling effect.
Keywords :
gold; infrared spectra; light transmission; nanostructured materials; plasmonics; visible spectra; Au; extraordinary optical transmission property; gold umbrella-like tap blocked nanohole array; nanocap; plasmonic gold pillar blocking; stronger coupling effect; total light transmission efficiency; Couplings; Electric fields; Gold; Optical arrays; Optical films; Plasmons; finite difference time domain method; surface plasmon polariton; umbrella-like tap;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2015 14th International Conference on
Conference_Location :
Nanjing
DOI :
10.1109/ICOCN.2015.7203664
