Photothermal properties of strongly coupled Au nanopillars
P. Timoshenko1, V. Kaydashev2
1Physics Faculty, Southern Federal University, 5 Zorge St., Rostov-on-Don, Russia 344090
2Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology (MIPT), Institutskiy Per.9, 141701, Dolgoprudny, Russia
Abstract
Strongly coupled Au nanopillars are of great interest for near IR photonic devices including near IR fs pulses-to-THz radiation converters, optically controlled THz metasurfaces and SERS substrates. Near IR photothermal properties of pair of strongly coupled Au nanopillars separated by several nanometer gap are studied by numerical simulation using finite element method. The structures are studied on lithium niobate and VO2 substrates at temperature below and above isolator-to-conductor phase transition. Photothermal properties are characterized as function of pillars size and radiation incidence angle.
Speaker
Pavel Timoshenko
Physics Faculty, Southern Federal University, 5 Zorge St., Rostov-on-Don, Russia 344090
Russia
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