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O: Fachverband Oberflächenphysik

O 22: Organic-Inorganic Hybrid Systems and Organic Films III

O 22.3: Vortrag

Montag, 20. März 2017, 17:30–17:45, WIL A317

Optimization and experimental investigation of hybrid organic-inorganic (plasmon-) nanolaser designs — •Martin Rothe, Günter Kewes, and Oliver Benson — Humboldt-Universität zu Berlin, Department of Physics, Nanooptics Group, Newtonstraße 15, 12489 Berlin, Germany

The understanding of coherent scattering, amplification and lasing in nanoscopic structures is essential for future optical and optoelectronical devices. Due to their nonlinear threshold behaviour, lasing systems could be used as active building blocks or fast modulators in such devices. However this requires a deeper understanding of the interplay between gain medium and resonators. We focus on hybrid nanolaser designs consisting of inorganic resonators and organic gain medium.

In order to optimize those structures we study various nanoresonator geometries and materials. Therefore we investigate both, plasmonic nanowires (to build a spaser) and dielectric resonators (to build a nanolaser). The nanostructures are analyzed in our optical setup, allowing for spatial, spectral and temporal analysis of single systems as well as ensembles, various illumination/excitation geometries, including dark field imaging as well as confocal scanning. In parallel we use numerical simulations to validate our experimental findings and to optimize the designs.