Metamaterial optics: from Cosmic Microwave Background telescopes to tunable optical systems.C

by Giampaolo Pisano (Cardiff University (UK))

Monday 11 Mar 2019, 16:00 → 18:00 Europe/Rome

Aula Conversi (Dipartimento di Fisica - Ed. G.Marconi)

The detection of the Cosmic Microwave Background primordial B-modes will
provide information about the Inflation and the primordial gravitational
waves. Future instruments require high sensitivities and accurate control
of the optical systematics. Recent developments on metamaterials allowed
the realisation of surfaces able to arbitrarily manipulate amplitude, phase
and polarisation of mm-wave optical beams. ‘Metamaterial telescopes’ can be
built as stacks of flat devices that can also minimise the systematics at
hardware level. This technology can be used to realise negative index
materials, magnetic mirrors, photon orbital angular momentum devices,
Toraldo-pupils, etc. The transposition into the Silicon technology could
lead to the realisation of arbitrarily tunable optical devices.