Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna
arXiv:2402.00664 · doi:10.1063/5.0201748
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.
References in corpus (17)
- DNA-based Self-Assembly of Chiral Plasmonic Nanostructures with Tailored Optical Response
- On-command enhancement of single molecule fluorescence using a gold nanoparticle as an optical nano-antenna
- Nanoantennas for visible and infrared radiation
- Photonic quantum information processing: a review
- Impedance matching and emission properties of optical antennas in a nanophotonic circuit
- Optical Signatures of Quantum Emitters in Suspended Hexagonal Boron Nitride
- Adaptive Finite Element Method for Simulation of Optical Nano Structures
- Objects of maximum electromagnetic chirality
- Chiroptical response of a single plasmonic nanohelix
- Doubly resonant optical nanoantenna arrays for polarization resolved measurements of surface-enhanced Raman scattering
- The resonant behavior of a single plasmonic helix
- Plasmonic Gold Helices for the visible range fabricated by oxygen plasma purification of electron beam induced deposits
- Time-Harmonic Optical Chirality in Inhomogeneous Space
- Numerical analysis of nanostructures for enhanced light extraction from OLEDs
- Mode-matching for Optical Antennas
- Towards maximally electromagnetically chiral scatterers at optical frequencies
- Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna