Observation of strong light-matter coupling by spectroscopic ellipsometry
| Autor: | Marius Grundmann, Chris Sturm, Bernd Rheinländer, R. Schmidt-Grund, Helena Hilmer |
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| Rok vydání: | 2010 |
| Předmět: |
Coupling
Photoluminescence Materials science business.industry Exciton Physics::Optics Substrate (electronics) Condensed Matter Physics Pulsed laser deposition Condensed Matter::Materials Science Resonator Ellipsometry Optoelectronics General Materials Science Electrical and Electronic Engineering business Yttria-stabilized zirconia |
| Zdroj: | Superlattices and Microstructures. 47:19-23 |
| ISSN: | 0749-6036 |
| DOI: | 10.1016/j.spmi.2009.06.007 |
| Popis: | We report on the observation of strong coupling between excitons and cavity photons in a ZnO-based microresonator up to room temperature. The ZnO-based resonator was grown by means of pulsed laser deposition (PLD) on c-sapphire substrate and consists of a half-wavelength ZnO-cavity between two Bragg reflectors, each made of 10.5 layer pairs of yttria stabilized zirconia and Al2O3. Angle-resolved spectroscopic ellipsometry revealed the resonator to be in the strong coupling regime at room temperature. This was confirmed for temperatures between 10 K and 290 K by means of angle-resolved photoluminescence and reflection experiments. Prior studies on a Fabry–Perot resonator containing a half-wavelength YSZ-cavity (empty resonator) demonstrate the ability of ellipsometry to gain comprehensive information on mode-structure properties of resonators without coupling effects. |
| Databáze: | OpenAIRE |
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