Slow reflection and two-photon generation of microcavity exciton-polaritons
arXiv:1408.1680 · doi:10.1364/OPTICA.2.000001
Abstract
We resonantly inject polaritons into a microcavity and track them in time and space as they feel a force due to the cavity gradient. This is an example of "slow reflection," as the polaritons, which can be viewed as renormalized photons, slow down to zero velocity and then move back in the opposite direction. These measurements accurately measure the lifetime of the polaritons in our samples, which is 180 10 ps, corresponding to a cavity leakage time of 135 ps and a cavity of 320,000. Such long-lived polaritons propagate millimeters in these wedge-shaped microcavities. Additionally, we generate polaritons by two-photon excitation directly into the polariton states, allowing the possibility of modulation of the two-photon absorption by a polariton condensate.
4 figures. Supplemental info included after bibliography
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Cited by in corpus (18)
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