Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 21: Poster Monday: Plasmonics and Nanooptics
O 21.4: Poster
Montag, 1. April 2019, 17:45–20:00, Poster F
Switchable cavity-assisted energy transfer in the infrared via surface phonon polaritons — •Mohsen Janipour1, Matthias Hensen2, and Walter Pfeiffer1 — 1Fakultät für Physik, Universität Bielefeld, Universitätsstr. 25, Bielefeld 33615, Germany — 2Physikalische Chemie, Universität Würzburg, Am Hubland, Würzburg, Germany
Devices providing switchable energy and/or signal transfer in the infrared frequency range are essential to realize novel integrated photonic circuits. In the infrared and terahertz regime, Silicon-Carbide (SiC) supports the low-loss surface phonon polaritons. Based on finite difference time domain simulations we investigate high-quality tunable photonic modes in an elliptical metal-SiC heterostructure cavity which serves as a low-loss transfer channel for efficient coupling between two spatially separated locations in the cavity. Tuning of such modes in the Reststrahlen band of SiC is achieved via the longitudinal optical phonon resonance that depends on the carrier concentration. We demonstrate photonic mode shifts larger than 20 times the mode line width and conclude that these cavity modes are well suited to realize optically switchable resonant energy transfer channels in the range between 24-29 THz.