Open AccessOptical transmission enhancement of two-dimensional subwavelength hole arrays in metallic films
Author(s) -
Yi Yue,
Guoping Wang,
Yun-Ze Long,
Hong Shan
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.604
Subject(s) - materials science , extraordinary optical transmission , surface plasmon , excitation , transmission (telecommunications) , metal , optoelectronics , coupling (piping) , optics , surface (topology) , plasmon , surface plasmon polariton , physics , telecommunications , geometry , mathematics , quantum mechanics , computer science , metallurgy
Numerical simulation has been performed on the optical transmission enhancement of a metallic film with a two-dimensional subwavelength hole array- The results show that the ideal conducting film of the same array structure also presents a transmission enhancement, but the enhancement is not higher than that of the real one- Further analysis reveals that a complicated waveguide coupling effect is responsible for the enhanced transmission- The excitation of surface current on metallic surface transfers the light energy of incidence from metallic surfaces to the holes and then adjusts the optical transmission- We believe that the resonant excitation of surface plasmon is not necessary for the enhancement effect-