%0 Generic %1 kuen2024chiral %A Kuen, Lilli %A Löffler, Lorenz %A Tsarapkin, Aleksei %A Zschiedrich, Lin %A Feichtner, Thorsten %A Burger, Sven %A Höflich, Katja %D 2024 %K chiral directional nano-optics near-field optical plasmon %R 10.48550 %T Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna %U https://browse.arxiv.org/abs/2402.00664 %X Plasmonic antennas with helical geometry are capable transducers between linearly polarized dipole emission and purely circular polarized far-fields. Besides large Purcell enhancements they possess a wide tunability due to the geometry dependence of their resonant modes. Here, the coupling of a dipole emitter embedded in a thin film to plasmonic single and double helices is numerically studied. Using a higher-order finite element method (FEM) the wavelength dependent Purcell enhancement of a dipole with different positions and orientations is calculated and the far-fields with respect to their chirality and radiation patterns are analyzed. Both single and double helices demonstrate highly directional and circularly polarized far-fields for resonant excitation but with significantly improved directional radiation for the case of double helices.

@misc{kuen2024chiral, abstract = {Plasmonic antennas with helical geometry are capable transducers between linearly polarized dipole emission and purely circular polarized far-fields. Besides large Purcell enhancements they possess a wide tunability due to the geometry dependence of their resonant modes. Here, the coupling of a dipole emitter embedded in a thin film to plasmonic single and double helices is numerically studied. Using a higher-order finite element method (FEM) the wavelength dependent Purcell enhancement of a dipole with different positions and orientations is calculated and the far-fields with respect to their chirality and radiation patterns are analyzed. Both single and double helices demonstrate highly directional and circularly polarized far-fields for resonant excitation but with significantly improved directional radiation for the case of double helices. }, added-at = {2024-02-02T15:16:09.000+0100}, archiveprefix = {arXiv}, author = {Kuen, Lilli and Löffler, Lorenz and Tsarapkin, Aleksei and Zschiedrich, Lin and Feichtner, Thorsten and Burger, Sven and Höflich, Katja}, biburl = {https://www.bibsonomy.org/bibtex/2626168837986d0e7991e6524d5d12ff4/ep5optics}, doi = {10.48550}, eprint = {2402.00664}, interhash = {7391a5fe10c12813437a9dfb71758753}, intrahash = {626168837986d0e7991e6524d5d12ff4}, keywords = {chiral directional nano-optics near-field optical plasmon}, language = {english}, month = {February}, primaryclass = {physics.optics}, timestamp = {2024-02-02T15:16:09.000+0100}, title = {Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna}, url = {https://browse.arxiv.org/abs/2402.00664}, year = 2024 }