Terahertz emission from surface-immobilized gold nanospheres

• Published in: Optics letters Vol. 37; no. 19; p. 4053
• Main Authors: Kajikawa, Kotaro, Nagai, Yusuke, Uchiho, Yuichi, Ramakrishnan, Gopakumar, Kumar, Nishant, Ramanandan, Gopika K P, Planken, Paul C M
• Format: Journal Article
• Language: English
• Published: United States 01.10.2012

Electromagnetic wave emission based on optical rectification at terahertz (THz) wavelengths was observed from surface-immobilized gold nanospheres (SIGNs) above a gold surface. Although the excitation wavelength is off-resonant with the localized surface plasmons, the THz emission field was observed...