Ultrafast optical control of terahertz surface plasmon polariton in subwavelength hole-arrays at room temperature

Author

Azad, Abul K. ; Tian, Zhen ; Chen, Hou-Tong ; Lu, Xinchao ; Kasarla, Satish R. ; Zhang, Weili ; Taylor, Antoinette J. ; O´Hara, John F.

Author_Institution

MPA-CINT, Los Alamos Nat. Lab., Los Alamos, NM, USA

fYear

2009

fDate

2-4 June 2009

Firstpage

1

Lastpage

2

Abstract

We demonstrate ultrafast optical control of surface plasmon assisted terahertz (THz) transmission in a subwavelength metallic hole array on a semiconductor substrate. The transient photoconductivity of the substrate allows modulation of the THz resonance amplitude via optical excitation with a time scale of ~10 ps.

Keywords

photoconductivity; polaritons; semiconductor materials; surface plasmons; optical excitation; subwavelength hole-arrays; subwavelength metallic hole array; terahertz surface plasmon polariton; transient photoconductivity; Gallium arsenide; Gratings; Optical attenuators; Optical control; Optical filters; Optical pumping; Optical superlattices; Plasmons; Resonance; Ultrafast optics; (240.6680) Surface Plasmons; (300.6495) Terahertz; (320.0320) Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-55752-869-8

Electronic_ISBN

978-1-55752-869-8

Type

conf

Filename

5224642