Generation of ultrafast terahertz radiation pulses on metallic nanostructured surfaces

• Published in: Optics express Vol. 17; no. 4; p. 2470
• Main Authors: Welsh, Gregor H., Wynne, Klaas
• Format: Journal Article
• Language: English
• Published: United States 16.02.2009
• Subjects: Computer Simulation; Gold - chemistry; Infrared Rays; Microwaves; Models, Chemical; Nanostructures - chemistry; Nanostructures - ultrastructure; Silver - chemistry; Surface Plasmon Resonance - methods

A resonant "incoherent" rectification process is presented relying on the excitation of surface plasmons on a nanostructured metal surface. Excitation of gold and silver films with 800-nm femtosecond laser pulses results in the emission of terahertz radiation with an angle-dependent effici...