Time-resolved hot luminescence and resonant Raman scattering: Cu2O revisited |
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| Authors: | JS Weiner PY Yu |
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| Institution: | Department of Physics, University of California, Berkeley, CA 94720, USA;Materials and Molecular Research Division, Lawrence Berkeley Laboratory Berkeley, CA 94720, USA |
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| Abstract: | Time-resolved resonant scattering of both one-phonon and two-phonon Raman modes at the 1s ortho-exciton state of the yellow series in Cu2O is reported. From the time dependence of the one-phonon mode we determine the scattering rate among the triply degenerate ortho-exciton states to be 2.5 × 108sec-1. From the two-phonon modes we directly determine the exciton lifetime as a function of its kinetic energy. In both cases the resonant scattering is found to be dominated by hot luminescence. |
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