Ultrafast Electron Dynamics in Ge Quantum Dots
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ABSTRACT An analysis of the ultrafast response of Ge quantum dots, with average radii of 4 nm and 16 nm, is reported here. Pump and probe experiments allowed investigation of the wavelength region between 450 and 750 nrm, characterized by the absorption peaks due to the E, and E1+A1 interband transitions. Two different time regimes have been identified: a first one (t
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