Title :
All-optical coherently controlled Terahertz AC charge currents from excitons in semiconductors
Author :
SameS, Christian ; Menard, Jean-Michel ; Betz, Markus ; Smirl, Arthur L. ; Van Driel, Henry M.
Author_Institution :
Dept. of Phys., Univ. of Toronto, Toronto, ON, Canada
Abstract :
THz radiation field emitted by a [100] oriented CdTe wafer is studied. Quantum interference between single- and two-photon absorption pathways of fundamental (omega) and second-harmonic (2omega) 150 fs optical pulses enables the optical injection of ballistic electron and hole currents in bulk semiconductors.
Keywords :
II-VI semiconductors; ballistic transport; cadmium compounds; excitons; high-speed optical techniques; optical harmonic generation; quantum interference phenomena; submillimetre wave spectra; two-photon processes; CdTe; THz radiation field; all-optical coherently controlled terahertz AC charge currents; ballistic electron currents; bulk semiconductors; excitons; hole currents; optical injection; quantum interference; second-harmonic optical pulses; single-photon absorption pathways; time 150 fs; two-photon absorption pathways; Acceleration; Electron optics; Excitons; Frequency; Microscopy; Nonlinear optics; Optical control; Optical pulses; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192556
