Title :
Extreme terahertz nonlinearities in undoped GaAs driven by ultrahigh near-fields in metamaterials
Author :
Lange, C. ; Maag, T. ; Hohenleutner, M. ; Baierl, S. ; Edwards, E. ; Bougeard, D. ; Woltersdorf, G. ; Huber, Rainer
Author_Institution :
Dept. of Phys., Univ. of Regensburg, Regensburg, Germany
Abstract :
Local terahertz fields of multiple 10 MV/cm tailored in gold metamaterials drive electronic interband transitions in intrinsic GaAs. The bandgap exceeds the THz photon energy 400-fold. Photoluminescence microscopy maps the THz near-field distribution.
Keywords :
III-V semiconductors; gallium arsenide; gold; nonlinear optics; optical metamaterials; optical microscopy; photoluminescence; terahertz waves; wide band gap semiconductors; Au; GaAs; bandgap; extreme terahertz nonlinearities; gold metamaterial drive electronic interband transitions; intrinsic gallium arsenide; photoluminescence microscopy maps; terahertz near-field distribution; terahertz photon energy; Antennas; Gallium arsenide; Metamaterials; Nonlinear optics; Optical resonators; Photonics; Transient analysis;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
