Title :
Terahertz magneto-spectroscopy of quantum wells: Stability of high-density excitons in high magnetic fields
Author :
Qi Zhang ; Weilu Gao ; Watson, John D. ; Manfra, Michael J. ; Kono, Junichiro
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
We study the dynamics of excitons in GaAs quantum wells via optical-pump/terahertz-probe spectroscopy in magnetic fields. We found that the 1s-2p, intra-excitonic transition is robust at high magnetic fields even under high excitation fluences, indicating magnetically enhanced stability of excitons.
Keywords :
III-V semiconductors; excitons; gallium arsenide; magneto-optical effects; optical pumping; semiconductor quantum wells; terahertz wave spectra; 1s-2p intra-excitonic transition; GaAs; high magnetic fields; high-density exciton stability; magnetically enhanced stability; optical-pump spectroscopy; quantum wells; terahertz magneto-spectroscopy; terahertz-probe spectroscopy; Excitons; Gallium arsenide; Magnetic fields; Magnetic resonance; Optical amplifiers; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
