Detail Project and Funding

Abstract: OMEN capitalises on a newly developed scheme for enhanced second order optical nonlinearities to design, fabricate and test new classical and quantum platforms based on all-dielectric nanoantennas and metasurfaces. OMEN will fulfil its ambitious goals by engineering near and far field patterns of nanoantennas and by demonstrating all-dielectric metasurfaces featuring control over the spatial, polarization and frequency properties of the nonlinearly-generated photons. We intend to prove that in these dielectric metasurfaces sum and difference frequency generation and spontaneous parametric down conversion can all be efficiently achieved. OMEN is designed to establish a framework for our researchers to access both fabrication and characterization facilities in an integrated fashion, fostering new research activities that will in the end spur applications for nanoscale photonic devices.

The Scientific Results:
1) Sensing through the optical radiation pattern in dielectric metastructures
2) Second harmonic generation in monolithic lithium niobate metasurfaces
3) Self-tuning of second-harmonic generation in GaAs nanowires enabled by nonlinear absorption
4) Silicon Metasurfaces for Third Harmonic Geometric Phase Manipulation and Multiplexed Holography
5) Second Harmonic Beam Shaping and Sensing in Dielectric Bow-Tie Antenna via Convex Optimization Array Synthesis Approach
6) Vertical emission of second and third harmonic light from GaAs nanowires below the band edge
7) Tuning the ultrafast response of fano resonances in halide perovskite nanoparticles
8) Gian electric and magnetic Purcell factor in dielectric oligomers
9) Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas
10) Switching the second harmonic generation by a dielectric metasurface via tunable liquid crystal
11) Numerical simulations on laser absorption enhancement in hybrid metallo-dielectric nanostructured targets for future nuclear astrophysics experiments
12) High-harmonic generation at the nanoscale boosted by bound states in the continuum