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HL: Fachverband Halbleiterphysik

HL 54: Focus Session: Nanophotonic concepts and materials for energy harvesting - Plasmonics, transformation optics, upconversion, and beyond II

HL 54.1: Hauptvortrag

Mittwoch, 18. März 2015, 15:00–15:30, EW 201

Nanophotonic light harvesting concepts from the visible to the mid-infrared — •Stefan A Maier — Imperial College London, London, UK

Surface polariton modes facilitate the controlled focusing of electromagnetic energy from the far to the near field, overcoming the diffraction limit of optics. This talk will discuss new developments in this field, focusing firstly on surface plasmon polaritons based on metallic nanostructures. Here, transformation optics serves as a useful design tool and also as a powerful formalism to reveal the underlying physics of the light harvesting process. At mid-infrared frequencies, surface phonon polariton modes in polar dielectrics are preferable due to longer phonon lifetimes and hence less absorption-induced damping. Examples of light harvesting with silicon carbide and hexagonal boron nitride nanostructures will be presented in the second part of the talk, including the characterization of hyperbolicity in polar van der Waals crystals.