6 papers
Plasmonic superchiral lattice resonances in the mid-infrared
Francesco Mattioli, Giuseppe Mazzeo, Giovanna Longhi +14
Recent efforts in the field of surface-enhanced spectroscopies have focused on the paradigm of superchirality, entailing the engineering of the local electromagnetic fields to boos…
Superchiral Surface Waves for All-Optical Enantiomer Separation
Giovanni Pellegrini, Marco Finazzi, Michele Celebrano +4
We introduce the use of superchiral surface waves for the all-optical separation of chiral compounds. Using a combination of electrodynamics modeling and analytical techniques, we…
Evidence for cascaded third harmonic generation in non-centrosymmetric gold nanoantennas
Michele Celebrano, Andrea Locatelli, Lavinia Ghirardini +10
The optimization of nonlinear optical processes at the nanoscale is a crucial step for the development of nanoscale photon sources for quantum-optical networks. The development of…
Mid Infrared Nonlinear Plasmonics using Germanium Nanoantennas on Silicon Substrates
Marco P. Fischer, Aaron Riede, Kevin Gallacher +8
We demonstrate third harmonic generation in plasmonic antennas made of highly doped germanium and designed to be resonant in the mid infrared. Owing to the near-field enhancement,…
Plasmon-enhanced second harmonic sensing
Lavinia Ghirardini, Anne-Laure Baudrion, Marco Monticelli +7
It has been recently suggested that the nonlinear optical processes in plasmonic nanoantennas allow for a substantial boost in the sensitivity of plasmonic sensing platforms. Here…
Local field enhancement: comparing self-similar and dimer nanoantennas
Giovanni Pellegrini, Michele Celebrano, Marco Finazzi +1
We study the local field enhancement properties of self-similar nanolenses and compare the obtained results with the performance of standard dimer nanoantennas. We report that, des…