title: Large dynamic resonance transition between surface plasmon and localized surface plasmon modes.
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.
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Tian
authors.forename: Abul K
authors.initials: AK
authors.lastname: Azad
authors.forename: Xinchao
authors.initials: X
authors.lastname: Lu
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Gu
authors.forename: Jiaguang
authors.initials: J
authors.lastname: Han
authors.forename: Qirong
authors.initials: Q
authors.lastname: Xing
authors.forename: Antoinette J
authors.initials: AJ
authors.lastname: Taylor
authors.forename: John F
authors.initials: JF
authors.lastname: O'Hara
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang