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physics.optics2024
Double tips for in-plane polarized near-field microscopy and spectroscopy
Patryk Kusch, Jose Pareja Arcos, Aleksei Tsarapkin +4
Near-field optical microscopy and spectroscopy provide high-resolution imaging below the diffraction limit, crucial in physics, chemistry, and biology for studying molecules, nanop…
physics.optics2024
Double helical plasmonic antennas
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz +5
Plasmonic double helical antennas are a means to funnel circularly polarized light down to the nanoscale. Here, an existing design tool for single helices is extended to the case o…
physics.optics2024
Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna
Lilli Kuen, Lorenz Löffler, Aleksei Tsarapkin +4
Plasmonic antennas with helical geometry are capable transducers between linearly polarized dipole emission and purely circular polarized far-fields. Besides large Purcell enhancem…