Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 4: Plasmonics and Nanooptics I: Light-Matter Interactions
O 4.5: Vortrag
Montag, 20. März 2017, 11:30–11:45, TRE Ma
Temporal dynamics of nanowire based lasers — •Robert Röder1, Themistoklis Sidiropoulos2, Rupert F. Oulton2, and Carsten Ronning1 — 1Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Germany — 2Imperial College London, UK
Reinforced work in the field of nanophotonics for on-chip integrated optical components is urgent to provide novel approaches for optical data processing which can circumvent the forthcoming limitations of conventional electronic circuits. Here, II-VI compound semiconductor nanowires (NW) provide robust high optical gain and show beneficial Fabry-Pérot resonator properties allowing low threshold NW lasing at room temperature [Geburt et al, Nanotechnology 23, 365204 (2012)] and even continuous wave emission [Röder et al, Nano Letters 13, 3602 (2013)]. Yet, optical confinement in semiconductor NWs, and thus there size, is diffraction limited. However, plasmonic lasers using semiconductor NWs as gain medium have generated significant interest, since the optical mode size in these systems is far below the vacuum wavelength. By exploiting the natural non-linearity of the laser process itself, we investigate the laser dynamics of both photonic [Röder et al, Nano Lett. 15, 4637 (2015)] and plasmonic NW lasers [Sidiropoulos et al., Nat. Phys. 10, 870 (2014)], which are of high interest for concepts of ultrafast optical switching, nanosensing and nanospectroscopy.