Hole spin-relaxation in quantum wells from saturation of inter-subband absorption

DOI to cite this document:: 10.5283/epub.11819

Kainz, Josef ; Schneider, Petra ; Ganichev, Sergey ; Rössler, U. ; Wegscheider, Werner ; Weiss, Dieter ; Prettl, Wilhelm ; Belkov, Vassilij ; Golub, Leonid E. ; Schuh, Dieter

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Date of publication of this fulltext: 11 Jan 2010 13:18

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Abstract

Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity ...