Open AccessLarge dynamic resonance transition between surface plasmon and localized surface plasmon modes
Author(s) -
Zhen Tian,
Abul K. Azad,
Xinchao Lu,
Jianqiang Gu,
Jiaguang Han,
Qirong Xing,
Antoinette J. Taylor,
John F. O’Hara,
Weili Zhang
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.012482
Subject(s) - surface plasmon , plasmon , materials science , surface plasmon polariton , surface plasmon resonance , terahertz radiation , localized surface plasmon , optics , optoelectronics , resonance (particle physics) , physics , nanoparticle , nanotechnology , particle physics
We present resonant terahertz transmission in a composite plasmonic film comprised of an array of subwavelength metallic patches and semiconductor holes. A large dynamic transition between a dipolar localized surface plasmon mode and a surface plasmon resonance near 0.8 THz is observed under near infrared optical excitation. The reversal in transmission amplitude from a stop-band to a pass-band and up to pi/2 phase shift achieved in the composite plasmonic film make it promising in large dynamic phase modulation, optical changeover switching, and active terahertz plasmonics.