Abstract
We use time-resolved spectroscopy with time resolution better than 100 fs to investigate the influence of intra- and intersubband relaxation of optically excited electrons in GaAs/AlGaAs quantum wells. We use a pump–probe setup to measure differential transmission spectra (DTS) after excitation with tunable near-infrared pump pulses. The samples consist of 40 periods of GaAs quantum wells separated by 20-nm Al0.35Ga0.65As barriers. The well thickness is 10 nm (sample A) and 15 nm (sample B), respectively.
© 1994 IEEE
PDF ArticleMore Like This
S. Hunsche, K. Leo, H. Kurz, and K. Köhler
QWH4 International Quantum Electronics Conference (IQEC) 1994
R. H. M. Groeneveld and D. Grischkowsky
QThB2 European Quantum Electronics Conference (EQEC) 1994
A. Seilmeier, M. Wörner, H.-J. Hübner, G. Abstreiter, G. Weimann, and W. Schlapp
ThB8 International Quantum Electronics Conference (IQEC) 1988