Daniel Matteo
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Bidirectional Cascaded Superfluorescent Lasing in Air Enabled by Resonant Third Harmonic Photon Exchange from Nitrogen to Argon Open
Cavity-free lasing in atmospheric air has stimulated intense research toward a fundamental understanding of underlying physical mechanisms. In this Letter, we identify a new mechanism-a third-harmonic photon mediated resonant energy transf…
Bidirectional cascaded superfluorescent lasing in air enabled by resonant third harmonic photon exchange from nitrogen to argon Open
Cavity-free lasing in atmospheric air has stimulated intense research towards fundamental understanding of underlying physical mechanisms. In this Letter, we identify a new mechanism -- third harmonic photon mediated resonant energy transf…
Self-channeling of a multi-Joule 10 µm picosecond pulse train through long distances in air Open
In the long-wave infrared (LWIR) range, where, due to wavelength scaling, the critical power of Kerr self-focusing P cr in air increases to 300-400 GW, we demonstrate that without external focusing a train of picosecond CO 2 laser pulses c…
View article: The next generation cameras for the Large-Sized Telescopes of the Cherenkov Telescope Array Observatory
The next generation cameras for the Large-Sized Telescopes of the Cherenkov Telescope Array Observatory Open
The latest generation of silicon photomultipliers (SiPM) offers twice as much sensitivity to Cherenkov light observed at ground level when compared to photomultipliers.Their use for imaging atmospheric Cherenkov telescopes is increasing, f…
Tellurium crystal pumped with ultrafast 10 µm pulses demonstrates a giant nonlinear optical response Open
The nonresonant nonlinear optical response of bulk tellurium (Te) is studied using 220 fs 10 µm laser pulses with photon energy roughly three times smaller than the band gap energy. The Kerr nonlinearity is found to be extremely large (n 2…
Highly spin-polarized multi-GeV electron beams generated by single-species plasma photocathodes Open
High-gradient and high-efficiency acceleration in plasma-based accelerators has been demonstrated, showing its potential as the building block for a future collider operating at the energy frontier of particle physics. However, generating …
Cross-polarized common-path temporal interferometry for high-sensitivity strong-field ionization measurements Open
Absolute density measurements of low-ionization-degree or low-density plasmas ionized by lasers are very important for understanding strong-field physics, atmospheric propagation of intense laser pulses, Lidar etc. A cross-polarized common…
Highly spin-polarized multi-GeV electron beams generated by single-species plasma photocathodes Open
High-gradient and high-efficiency acceleration in plasma-based accelerators has been demonstrated, showing its potential as the building block for a future collider operating at the energy frontier of particle physics. However, generating …
Mid- and Far-Infrared Supercontinuum Generation in Bulk Tellurium Spanning from 5.3 $μ$m to 32 $μ$m Open
Supercontinuum generation is performed in the bulk semiconductor tellurium (Te) with a high-power picosecond CO$_2$ laser at peak intensities up to 20 GW/cm$^2$. The spectrum spans from the second harmonic of the pump at 5.3 $μ$m to 32 $μ$…
Observation of breakdown wave mechanism in avalanche ionization produced atmospheric plasma generated by a picosecond CO2 laser Open
Understanding the formation and long-timescale evolution of atmospheric plasmas produced by ultrashort, long-wavelength infrared (LWIR) pulses is an important but partially understood problem. Of particular interest are plasmas produced in…
<i>In Situ</i> Generation of High-Energy Spin-Polarized Electrons in a Beam-Driven Plasma Wakefield Accelerator Open
In situ generation of a high-energy, high-current, spin-polarized electron beam is an outstanding scientific challenge to the development of plasma-based accelerators for high-energy colliders. In this Letter, we show how such a spin-polar…
Control of the nonlinear response of bulk GaAs induced by long-wavelength infrared pulses Open
The nonlinear optical response of GaAs is studied using extremely nonresonant 10 μm laser pulses with peak intensities greater than 2 GW/cm 2. We observe over an order of magnitude enhancement in the four-wave mixing efficiency by decreasi…
Study of Four-Wave Mixing in Bulk Semiconductors Excited by GW/cm 10 μm Laser Fields Open
Semiconductors such as GaAs, Ge, and ZnSe have long been important materials for optics and photonics applications in the middle infrared range (2-20 μm), finding use as windows or in optoelectronic devices. The nonlinear refractive index …