Title :
Two color picosecond time resolved PL studies of anti-Stokes PL in GaAs/AlGaAs asymmetric double quantum wells
Author :
Hohng, S.C. ; Kim, D.S. ; Citrin, D.S.
Author_Institution :
Dept. of Phys., Seoul Nat. Univ., South Korea
Abstract :
Summary form only given. We have performed two color picosecond time-resolved PL experiments on the anti-Stokes PL (ASPL) in GaAs/AlGaAs asymmetric double quantum well (ADQW) at 10 K. We have demonstrated that the forbidden two step absorption process has strong contribution to the ASPL in our ADQW samples by performing novel two color picosecond PL experiments. In addition, we found that the very long lived states play the important role in two step absorption process of ASPL, which is invisible by other experimental methods.
Keywords :
III-V semiconductors; aluminium compounds; excitons; gallium arsenide; photoluminescence; semiconductor quantum wells; time resolved spectra; 10 K; GaAs-AlGaAs; anti-Stokes PL; asymmetric double quantum wells; excitons; forbidden two step absorption process; two color picosecond time resolved PL; very long lived states; wide well heavy hole; Absorption; Delay effects; Excitons; Gallium arsenide; Laser tuning; Magnetic separation; Photoluminescence; Photonic band gap; Physics; Probes;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-576-X
DOI :
10.1109/QELS.1999.807542
