145 citations · 1.1k across the 29 of their papers we have counts for
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Recent twists in twisted light: A perspective on optical vortices from dielectric metasurfaces
Marco Piccardo, Antonio Ambrosio
Optical vortices are the electromagnetic analogue of fluid vortices studied in hydrodynamics. In both cases the traveling wavefront, either made of light or fluid, is twisted like…
Response to Comment on Widely tunable compact terahertz gas lasers
Paul Chevalier, Arman Amirzhan, Fan Wang +4
We recently demonstrated a widely tunable THz molecular laser and reported mathematical formulas and a table for comparing how various molecules would perform as such lasers (Cheva…
Unifying frequency combs in active and passive cavities: Temporal solitons in externally-driven ring lasers
L. Columbo, M. Piccardo, F. Prati +8
Frequency combs have become a prominent research area in optics. Of particular interest as integrated comb technology are chip-scale sources, such as semiconductor lasers and micro…
Arbitrary polarization conversion for pure vortex generation with a single metasurface
Marco Piccardo, Antonio Ambrosio
The purity of an optical vortex beam depends on the spread of its energy among different azimuthal and radial modes. The smaller is this spread, the higher is the vortex purity and…
Mode-locked ultrashort pulses from an 8 m wavelength semiconductor laser
Johannes Hillbrand, Nikola Opacak, Marco Piccardo +4
Quantum cascade lasers (QCL) have revolutionized the generation of mid-infrared light. Yet, the ultrafast carrier transport in mid-infrared QCLs has so far constituted a seemingly…