Formation and all-optical control of optical patterns in semiconductor microcavities
Refereed conference paper presented and published in conference proceedings

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AbstractSemiconductor microcavities offer a unique way to combine transient all-optical manipulation of GaAs quantum wells with the benefits of structural advantages of microcavities. In these systems, exciton-polaritons have dispersion relations with very small effective masses. This has enabled prominent effects, for example polaritonic Bose condensation, but it can also be exploited for the design of all-optical communication devices. The latter involves non-equilibrium phase transitions in the spatial arrangement of exciton-polaritons. We consider the case of optical pumping with normal incidence, yielding a spatially homogeneous distribution of exciton-polaritons in optical cavities containing the quantum wells. Exciton-exciton interactions can trigger instabilities if certain threshold behavior requirements are met. Such instabilities can lead, for example, to the spontaneous formation of hexagonal polariton lattices (corresponding to six-spot patterns in the far field), or to rolls (corresponding to two-spot far field patterns). The competition among these patterns can be controlled to a certain degree by applying control beams. In this paper, we summarize the theory of pattern formation and election in microcavities and illustrate the switching between patterns via simulation results.
All Author(s) ListBinder R., Tsang C.Y., Tse Y.C., Luk M.H., Kwong N.H., Chan C.K.P., Leung P.T., Lewandowski P., Schumacher S., Lafont O., Baudin E., Tignon J.
Name of ConferenceUltrafast Bandgap Photonics
Start Date of Conference18/04/2016
End Date of Conference20/04/2016
Place of ConferenceBaltimore
Country/Region of ConferenceUnited States of America
Volume Number9835
LanguagesEnglish-United Kingdom
Keywordsall-optical switching, modulational instabilities, Semiconductor microcavity

Last updated on 2020-22-09 at 02:31