Ruzicka, Brian AndrewHigley, KarlWerake, Lalani KumariZhao, Hui2011-04-062011-04-062008-07B.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.78.045314https://hdl.handle.net/1808/7361Permissions were not obtained for sharing the full text of this article. Full text is available at the American Physical Society and at arXiv. See links in this record.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.Materials ScienceMesoscale and Nanoscale PhysicsOther10.1103/PhysRevB.78.045314openAccess