Title :
Single color injection of ballistic spin-polarized currents in strained [110]-oriented GaAs quantum wells
Author :
Bieler, M. ; Laman, N. ; van Driel, H.M. ; Smirl, Arthur L.
Author_Institution :
Dept. of Phys., Toronto Univ., Ont., Canada
Abstract :
Spin-polarized ballistic charge currents are generated in strained GaAs with single 60 fs optical pulses and detected via THz experiments. State filling and carrier-dependent momentum scattering lead to a sublinear intensity dependence at high pump intensities.
Keywords :
III-V semiconductors; ballistic transport; gallium arsenide; semiconductor quantum wells; spin polarised transport; submillimetre waves; 60 fs; GaAs; THz radiation; carrier-dependent momentum scattering; single color injection; spin-polarized ballistic charge currents; state filling; strained GaAs quantum wells; Capacitive sensors; Gallium arsenide; Laser excitation; Nonlinear optics; Optical polarization; Optical pulse generation; Optical pulses; Optical scattering; Probes; Pulse measurements;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548865
