Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 27: Nano-Optics III

Q 27.4: Vortrag

Dienstag, 7. März 2017, 15:15–15:30, P 11

Exceptional mode organization in a resonator microcavity based on a hyperbolic metamaterial — •Evgenij Travkin, Sascha Kalusniak, Sergey Sadofev, and Oliver Benson — Humboldt-Universität zu Berlin, Institut für Physik, Newtonstraße 15, 12489 Berlin

Metamaterials offer a variety of exciting possibilities for manipulation of light among which are i.e. the control of phase and group velocity and negative refraction. We investigate a hyperbolic metamaterial (HMM) based on stacked layer pairs of epitactically grown ZnO/ZnO:Ga embedded in a resonator microcavity. The highly anisotropic and frequency dependent HMM refractive index enables a unique distribution of resonant modes. Several modes of the same order can exist at different frequencies and the relative spectral positions of higher and lower order modes can interchange resulting in an anomalous mode organization. We present experimental spectra demonstrating unconventional mode emergence and reversal of the mode order in differently scaled HMM-based cavities and supplement them by transfer matrix calculations and dispersion relations derived from the cavity roundtrip condition. Our system can be fully tailored by tuning of the layer thickness ratio and doping level of the HMM.