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In this work a transient grating experiment was used to explore the inplane transport properties and two-colour pump-probe and time resolved photolu-minescence experiments were used to explore the population dynamics of excitons in ZnO quantum wells. By implementing stepped barriers in such quantum wells we also show that the overlap of the electron and hole wavefunctions can be controlled.
We have performed one and two colour, spectrally resolved four-wave mixing (FWM) experiments on a series of ZnO/Zn1-xMgxO quantum wells with different oxygen ion implantation doses. The results show that at room temperature and with resonant excitation, excitonic coherences are maintained beyond the duration of the laser pulse. A transient signal observed at negative delays in the two-colour experiments...
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