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All-optical generation and detection of subpicosecond ac spin-current pulses in GaAs
Ruzicka, Brian Andrew Higley, Karl Werake, Lalani Kumari Zhao, Hui
Ruzicka, Brian Andrew
Higley, Karl
Werake, Lalani Kumari
Zhao, Hui
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Abstract
Subpicosecond ac spin-current pulses are generated optically in GaAs bulk and quantum wells at room temperature and at 90 K through quantum interference between one-photon and two-photon absorptions driven by two phase-locked ultrafast laser pulses that are both circularly polarized. The dynamics of the current pulses are detected optically by monitoring, in real time and in real space, the nanoscale motion of electrons with high-resolution pump probe techniques.
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Date
2008-07
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American Physical Society
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Materials Science, Mesoscale and Nanoscale Physics
Citation
B.A. Ruzicka, K. Higley, L.K. Werake, and Hui Zhao, All-optical generation and detection of subpicosecond ac spin-current pulses in GaAs, Physical Review B 78, 045314 (2008). http://link.aps.org/doi/10.1103/PhysRevB.78.045314