Title :
Percolation-enhanced terahertz emission
Author :
Ramakrishnan, Gopakumar ; Planken, Paul C M
Author_Institution :
Dept. of Imaging Sci. & Technol., Delft Univ. of Technol., Delft, Netherlands
Abstract :
Emission of terahertz radiation is observed when semi-continuous ultrathin gold films near the percolation threshold are excited with femtosecond near-infrared laser pulses. Our experimental results suggest that the emission is through a percolation-enhanced second-order nonlinear optical rectification process.
Keywords :
gold; metallic thin films; nonlinear optics; percolation; terahertz wave spectra; Au; femtosecond near-infrared laser pulses; percolation threshold; percolation-enhanced second-order nonlinear optical rectification process; percolation-enhanced terahertz emission; semicontinuous ultrathin gold films; terahertz radiation; Gold; Nonlinear optics; Optical films; Optical pulses; Optical surface waves; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6104937
