Coherence of Electron Photoexcitation by Extremely Short Strong Light Pulses |
| A. Kalvováa and B. Velickýa,b aInstitute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 180 40 Praha 8, Czech Republic bFaculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2, Czech Republic |
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| For a semiconductor alloy with a predominant disorder scattering, we show that, under appropriate conditions, electrons photoexcited by a short strong light pulse form a coherent transient at first, while the incoherently backscattered electrons take over only gradually, with a time lag comparable with the pulse duration. The time evolution of the electron distribution is obtained by a direct evaluation of the non-equilibrium Green function. |
| DOI: 10.12693/APhysPolA.94.374 PACS numbers: 71.55.Eq, 72.10.Bg, 78.47.+p |