Title :
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
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;
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
