Light and heavy hole exciton polariton Faraday rotation in a single GaAs microcavity

33rd International Conference on the Physics of Semiconductors

Ferreira, D.C.T.^1 ; Pimenta, A.C.S.P.^1 ; Matinaga, F.M.^1

Depto de Fisica, ICEX, UFMG, MG, Belo Horizonte, Brazil^1

关键词: Emitted photons;    Excited systems;    Exciton energies;    External magnetic field;    Field momentum;    Heavy hole excitons;    Magnetic field parallel;    Spin population;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012082/pdf
DOI  :  10.1088/1742-6596/864/1/012082

来源: IOP

【 摘 要 】

Faraday rotation (FR) can also be observed in a resonantly excited system without an external magnetic field. In a microcavity, polaritons spin population imbalance generates an effective magnetic field across the cavity mode, which results in an amplified FR on the emitted photon. Also, when the cavity is tuned to light hole (LH) exciton energy, an additional field momentum will be added to the effective magnetic field parallel to cavity mode, resulting in a aditional FR.