We report on the investigation and observation of Bloch surface wave polaritons, resulting from
the interaction between excitons in ZnO and a Bloch surface wave supported by a distributed
Bragg reflector (DBR), for temperatures up to 430 K. The samples were fabricated using pulsed
laser deposition and consist of a DBR made of 6.5 layer pairs of yttrica-stabilized zirconia and
Al2O3 with a ZnO surface layer. We measured the reflectivity of transverse electric modes using a
SiO2 prism in Kretschmann–Raether configuration, giving access to high in-plane momenta.
Whereas the lower polariton branch was clearly observable, the upper polariton branch was not
visible, due to the strong absorption in ZnO above the excitonic resonance. By employing a
coupled oscillator model for the interaction between the bare surface mode and exciton, we
derived a corresponding Rabi splitting between 100–192 meV at 294 K, which decreases with
increasing temperature.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:85058 |
| Date | 02 May 2023 |
| Creators | Henn, Sebastian, Grundmann, Marius, Sturm, Chris |
| Publisher | IOP Publishing |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1367-2630, 093031 |
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