Dresden 2014 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 30: Poster: Quantum dots and wires: Preparation, characterization, optical properties and transport
HL 30.24: Poster
Montag, 31. März 2014, 17:00–20:00, P2
Investigation of CdS nanowire lasing emission — Robert Röder1, •Max Riediger1, Daniel Ploß2, Adrian Kriesch2, Ulf Peschel2, and Carsten Ronning1 — 1Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena — 2Institut für Optik, Information und Photonik, Friedrich-Alexander Universität Erlangen-Nürnberg, Staudstraße 7, 91058 Erlangen
Nanophotonic on-chip integrated components are a promising approach to overcome forthcoming limitations of electronic integrated circuits. Optical data transmission and processing by exploiting semiconductor nanowires, which offer efficient waveguide properties and mark the lower size limit of photonic laser systems, builds a possible route to overcome these challenges. High quality cadmium sulfide nanowires (CdS NW) open up the green spectral range around 2.4 eV acting as Fabry-Pérot laser resonators with a remarkable low threshold of 10 kW/cm^2 at room temperature [Geburt et al, Nanotechnology 23, 365204 (2012)] and operating even in cw emission mode [Röder et al, Nano Letters 13, 3602 (2013)]. Since optical processing is specified by the direct emission of the device, a head-on setup was developed to investigate the light output originating from the end facet of a single nanowire laser. This setup is suited to determine super luminescence (ASE) as well as lasing emission dependent on the polarization of the optical pump beam. Furthermore the angular distribution of nanowire lasing emission can be measured.