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Phys Rev Lett. 2012 Apr 20;108(16):166401. Epub 2012 Apr 18.

Room-temperature polariton parametric scattering driven by a one-dimensional polariton condensate.

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State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China.


We demonstrate a novel way to realize room-temperature polariton parametric scattering in a one-dimensional ZnO microcavity. The polariton parametric scattering is driven by a polariton condensate, with a balanced polariton pair generated at the adjacent polariton mode. This parametric scattering is experimentally investigated by the angle-resolved photoluminescence spectroscopy technique under different pump powers and it is well described by the rate equation of interacting bosons. The direct relation between the intensity of the scattered polariton signal and that of the polariton reservoir is acquired under nonresonant excitation, exhibiting the explicit nonlinear characteristic of this room-temperature polariton parametric process.

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