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Spin flip in a 2D electron gas is realized with a 2 ps, off-resonant laser pulse. Complete spin flip leads to spin precessions that are symmetric with respect to the arrival time of the pi-pulse.
Using a two-color, three-pulse differential transmission technique, we manipulate nonlinear optical processes of electron spins in a modulation-doped CdTe quantum well through exciton injection. The spin manipulation takes place without optical spin rotation.
Using a two-color, three-pulse differential transmission technique, we manipulate nonlinear optical processes of electron spins in a modulation-doped CdTe quantum well through exciton injection. The spin manipulation takes place without optical spin rotation.
Experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) in GaAs and InGaAs quantum wells show that many body interactions between excitons strongly modify the TRFR response from the electron spin coherence.
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