[Article] Optical polarization grating in semiconductors induced by exciton- polaritons
نویسندگان
چکیده
منابع مشابه
Optical spin hall effect.
A remarkable analogy is established between the well-known spin Hall effect and the polarization dependence of Rayleigh scattering of light in microcavities. This dependence results from the strong spin effect in elastic scattering of exciton polaritons: if the initial polariton state has a zero spin and is characterized by some linear polarization, the scattered polaritons become strongly spin...
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We report the photo-induced transmission change of the photonic crystal slab in which an active semiconductor, (C6H5C2H4NH3)2PbI4, is introduced. In the transmission spectrum without irradiating the pump light, sharp dips are observed, which are attributed to the excitation of exciton-polaritons (mixed modes of excitons in the embedded semiconductor and quasi-guided optical modes) in the slab. ...
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We studied optical reflection (OR) and contactless electroreflection (CER) from a periodic system of multiple GaAs/AlGaAs quantum wells (QWs). The system was designed in such way that the electromagnetic resonance of Bragg reflection occurs at the frequency that coincides or is close to the frequency of the exciton-polariton resonance in the wells. Under these conditions there should be electro...
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The results of study of the optical reflection and contactless electroreflection from a periodic system of multiple GaAs/AlGaAs quantum wells will be presented. The quantum well width was 15 or 20 nm and the barriers were 104 nm thick. In this system, the electromagnetic resonance of the Bragg reflection occurs at the frequency that coincides or is close to the frequency of the exciton-polarito...
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We photoexcite slab polymer waveguides doped with J-aggregating dye molecules and measure the leaky emission from strongly coupled waveguide exciton polariton modes at room temperature. We show that the momentum of the waveguide exciton polaritons can be controlled by modifying the thickness of the excitonic waveguide. Nonresonantly pumped excitons in the slab excitonic waveguide decay into tra...
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تاریخ انتشار 2016