Title :
THz radiation from optically-induced magnetization in GaAs
Author :
Newson, Ryan W. ; Hübner, Jens ; Van Driel, Henry M. ; Nastos, F. ; Sipe, John E.
Author_Institution :
Department of Physics and Institute for Optical Sciences, University of Toronto, 60 St George St, ON, M5S1A7, Canada
Abstract :
A transient magnetization is induced in a semiconductor via optical spin injection by 100 fs, 800 nm circularly polarized pulses. The weak emitted THz radiation is identified against that from a much stronger photogalvanic source.
Keywords :
Gallium arsenide; Laser excitation; Magnetization; Nonlinear optics; Optical polarization; Optical pumping; Optical retarders; Spin polarized transport; Stimulated emission; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431616
