473 citations · 2.4k across the 24 of their papers we have counts for
19 papers · 1 filter
An all-dielectric metasurface polarimeter
Yash D. Shah, Adetunmise C. Dada, James P. Grant +6
The polarization state of light is a key parameter in many imaging systems. For example, it can image mechanical stress and other physical properties that are not seen with convent…
Fast and slow nonlinearities in ENZ materials
Jacob B. Khurgin, Matteo Clerici, Nathaniel Kinsey
Novel materials, with enhanced light-matter interaction capabilities, play an essential role in achieving the lofty goals of nonlinear optics. Recently, Epsilon-Near-Zero (ENZ) med…
Broad frequency shift of parametric processes in Epsilon-Near-Zero time-varying media
Vincenzo Bruno, Stefano Vezzoli, Clayton DeVault +6
The ultrafast changes of material properties induced by short laser pulses can lead to frequency shift of reflected and transmitted radiation. Recent reports highlight how such a f…
Negative refraction in time-varying, strongly-coupled plasmonic antenna-ENZ systems
V. Bruno, C. DeVault, S. Vezzoli +14
Time-varying metasurfaces are emerging as a powerful instrument for the dynamical control of the electromagnetic properties of a propagating wave. Here we demonstrate an efficient…
Adiabatic frequency shifting in epsilon near zero materials: The role of group velocity
Jacob B Khurgin, Matteo Clerici, Vincenzo Bruno +9
We investigate adiabatic frequency conversion using epsilon near zero (ENZ) materials and show that while the maximum frequency conversion for a given change of permittivity does n…
Polarisation and Transparency of Relativistically Rotating Two-Level Atoms
Calum Maitland, Matteo Clerici, Fabio Biancalana
Electromagnetism and light-matter interaction in rotating systems is a rich area of ongoing research. We study the interaction of light with a gas of non-interacting two-level atom…
Towards On-Chip Integrated Optical Quantum Frequency Combs
Lucia Caspani, Christian Reimer, Michael Kues +12
Recent development in quantum photonics allowed to start the process of bringing photonic-quantum-based systems out of the lab into real world applications. As an example, devices…
Optical time reversal from time-dependent Epsilon-Near-Zero media
Stefano Vezzoli, Vincenzo Bruno, Clayton DeVault +7
Materials with a spatially uniform but temporally varying optical response have applications ranging from magnetic field-free optical isolators to fundamental studies of quantum fi…
Linearizing nonlinear optics
Bruno E. Schmidt, Philippe Lassonde, Guilmot Ernotte +4
In the framework of linear optics, light fields do not interact with each other in a medium. Yet, when their field amplitude becomes comparable to the electron binding energies of…
Observation of image pair creation and annihilation from superluminal scattering sources
Matteo Clerici, Gabriel C. Spalding, Ryan E. Warburton +6
The invariance of the speed of light implies a series of consequences related to our perception of simultaneity and of time itself. Whilst these consequences are experimentally wel…
Two-dimensional materials and the coherent control of nonlinear optical interactions
Shraddha M. Rao, Ashley Lyons, Thomas Roger +3
Deeply sub-wavelength two-dimensional films may exhibit extraordinarily strong nonlinear effects. Here we show that 2D films exhibit the remarkable property of a phase-controllable…
Sub-wavelength terahertz beam profiling of a THz source via an all-optical knife-edge technique
Sze Phing Ho, Anna Mazhorova, Mostafa Shalaby +6
We propose an all-optical Knife Edge characterization technique and we demonstrate its working principle by characterizing the sub-λ features of a spatially modulated Terahertz sou…
Experimental characterisation of nonlocal photon superfluids
David Vocke, Thomas Roger, Francesco Marino +4
Quantum gases of atoms and exciton-polaritons are nowadays a well established theoretical and experimental tool for fundamental studies of quantum many-body physics and suggest pro…
Terahertz bandwidth integrated radio frequency spectrum analyzer via nonlinear optics
Marcello Ferrera, Christian Reimer, Alessia Pasquazi +7
We report an integrated all-optical radio frequency spectrum analyzer based on a ~ 4cm long doped silica glass waveguide, with a bandwidth greater than 2.5 THz. We use this device…
Novel architecture for ultra-stable micro-ring resonator based optical frequency combs
Alessia Pasquazi, Lucia Caspani, Marco Peccianti +8
We report a novel geometry for OPOs based on nonlinear microcavity resonators. This approach relies on a self-locked scheme that enables OPO emission without the need for thermal l…
Phase-Insensitive Scattering of Terahertz Radiation
M. Petev, N. Westerberg, E. Rubino +6
The nonlinear interaction between Near-Infrared (NIR) and Terahertz pulses is principally investigated as a means for the detection of radiation in the hardly accessible THz spectr…
Nonlinear imaging and 3D-mapping of terahertz fields with Kerr media
Matteo Clerici, Daniele Faccio, Lucia Caspani +6
We investigate the spatially and temporally resolved four-wave mixing of terahertz fields and optical pulses in large band-gap dielectrics, such as diamond. We show that it is poss…
Counter-propagating frequency mixing with Terahertz waves in diamond
Matteo Clerici, Lucia Caspani, Eleonora Rubino +6
Frequency conversion by means of Kerr-nonlinearity is one of the most common and exploited nonlinear optical processes in the UV, visible, IR and Mid-IR spectral regions. Here we s…
Scaling mechanism for efficient wavelength conversion in laser plasmas
Matteo Clerici, Marco Peccianti, Bruno E. Schmidt +9
Laser-induced ionization is a fundamental tool for the frequency conversion of lasers into spectral regions so far inaccessible, including both extreme ultraviolet and terahertz. T…