Ultrafast Acoustic Gating of Photocurrent in Nanodevices with Quantum Wells

A. V. Akimov；D. Moss；B. A. Glavin；O. Makarovsky；R. P. Campion；C. T. Foxon；L. Eaves；A. J. Kent

Chinese Journal of Physics

49卷1期（2011 / 02 / 01）

133 - 140

英文

Picosecond acoustic wave packets are used to control the photocurrent excited by a femtosecond optical pulse in multilayer GaAs-based devices containing a quantum well. The change in photocurrent arises from the strain-induced shift of the quantum-well excitonic resonance due to the deformation potential of electron-phonon coupling.