We studied photoinduced Kerr effect in cavity polaritons in a semiconductor microcavity by carefully measuring the time-resolved Kerr rotation and ellipticity spectra. The Kerr rotation angle of the microcavity polaritons is a hundred times larger than a conventional single quantum well. A spectral shape analysis of the observed spectra suggests that the photomdeced Kerr effect mainly results from a line broadening of the polarions due to spin-polarized polariton-polaritcm scattering. Enhancement in oscillator strength also contributes to the large rotation angle.
|Physica Status Solidi (C) Current Topics in Solid State Physics
|出版済み - 2009
|8th International Conference on Excitonic Processes in Condensed Matter, EXCON'08 - Kyoto, 日本
継続期間: 2008 6月 22 → 2008 6月 27