Large dynamic resonance transition between surface plasmon and localized surface plasmon modes

Zhen Tian; Abul K Azad; Xinchao Lu; Jianqiang Gu; Jiaguang Han; Qirong Xing; Antoinette J Taylor; John F O'Hara; Weili Zhang

doi:10.1364/OE.18.012482

Large dynamic resonance transition between surface plasmon and localized surface plasmon modes

Opt Express. 2010 Jun 7;18(12):12482-8. doi: 10.1364/OE.18.012482.

Authors

Zhen Tian¹, Abul K Azad, Xinchao Lu, Jianqiang Gu, Jiaguang Han, Qirong Xing, Antoinette J Taylor, John F O'Hara, Weili Zhang

Affiliation

¹ School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA.

PMID: 20588374
DOI: 10.1364/OE.18.012482

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.