Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 35: Focussed Session: Metasurfaces II
HL 35.5: Vortrag
Donnerstag, 15. März 2018, 10:30–10:45, EW 201
Towards macroscopic non-reciprocal light propagation by colloidal self-assembly of gain and loss nanoparticles — Max Schnepf1,3, Fabian Goßler1,3, Vaibhav Gupta1,3, and •Tobias König1,2,3 — 1Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics — 2Technische Universität Dresden, Physical Chemistry, Technische Universität Dresden — 3Cluster of Excellence Centre for Advancing Electronics Dresden (cfaed), Technische Universität Dresden
For the next generation of optical computing, a novel and cost efficient approach is needed. This future development requires both tailored control over nanometer-sized building blocks on large area and a fundamental understanding of the strong as well as coherent coupling mechanisms. Currently, practical demonstrations are scarce, and are limited in terms of how many devices may be fabricated in parallel. To realize fabrication on a larger scale, a synergy between optical metamaterials and colloidal self-assembly will be leveraged. This requires, on the one hand, applying concepts from parity-time symmetry metamaterials and, on the other hand, using pre-existing gain and loss building blocks, which form an organized structure on large area by reducing their free energy [Nano Lett. 2014, 14, 6863.; Faraday Discuss. 2016, 191, 159.]. We discuss our recent achievements in finite-difference time-domain modelling, large area self-assembly of tailored building blocks as well as time and space resolved optical characterization to fabricate cost-efficient, programmable and up-scalable photonic diodes.