195 citations · 478 across the 14 of their papers we have counts for
14 papers
Ultrafast Frustration-Breaking and Magnetophononic Driving of Singlet Excitations in a Quantum Magnet
Flavio Giorgianni, Björn Wehinger, Stephan Allenspach +6
Ideal magnetic frustration forms the basis for the emergence of exotic quantum spin states that are entirely nonmagnetic. Such singlet spin states are the defining feature of the S…
Universal coupling between the photonics and phononics in a 3D graphene sponge
M. Shalaby, C. Vicario, F. Giorgianni +6
Photon-phonon coupling holds strong potential for sound and temperature control with light, opening new horizons in detector technology, remote sound generation and signal broadcas…
High Efficiency and Low Distortion Photoacoustic Effect in 3D Graphene Sponge
Flavio Giorgianni, Carlo Vicario, Mostafa Shalaby +7
The conversion of light in sound plays a crucial role in spectroscopy, applied physics, and technology. In this paper, light sound conversion in 3D graphene sponge through a photot…
Subcycle insulator-to-metal transition in vanadium dioxide by terahertz-field-driven tunneling
Flavio Giorgianni, Carlo Vicario, Mostafa Shalaby +4
In vanadium dioxide, the interplay between coherent lattice transformation and electronic correlation drives an insulator-to-metal transition (IMT). This phase commutation can be t…
Multi-octave spectrally tunable strong-field Terahertz laser
Carlo Vicario, Andrey V. Ovchinnikov, Oleg V. Chefonov +1
The ideal laser source for the emerging research field of nonlinear Terahertz (THz) spectroscopy should offer radiation with a large versatility and deliver both ultra-intense mult…
A multi-milliJoule femtosecond Raman laser emitting at 1.28 um
Carlo Vicario, Mostafa Shalaby, Aleksandr Konyashchenko +2
We report on the generation of broadband, high-energy femtosecond pulses centered at 1.28 um by stimulated Raman scattering in pressurized hydrogen cell. Stimulated Raman scatterin…
Intense THz source based on BNA organic crystal pumped at Ti:Sapphire wavelength
Mostafa Shalaby, Carlo Vicario, Karunanithi Thirupugalmani +2
We report on high energy terahertz pulses by optical rectification (OR) in the organic crystal N-benzyl-2-methyl-4-nitroaniline (BNA) directly pumped by a conventional Ti:Sapphire…
Simultaneous electronic and the magnetic excitation of a ferromagnet by intense THz pulses
Mostafa Shalaby, Carlo Vicario, Christoph P. Hauri
The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynami…
Ultrafast Laser-Induced Melting of Long-Range Magnetic Order in Multiferroic TbMnO3
Jeremy A. Johnson, T. Kubacka, M. C. Hoffmann +25
We performed ultrafast time-resolved near-infrared pump, resonant soft X-ray diffraction probe measurements to investigate the coupling between the photoexcited electronic system a…
The terahertz frontier for ultrafast coherent magnetic switching: Terahertz-induced demagnetization in ferromagnets
Mostafa Shalaby, Carlo Vicario, Christoph P. Hauri
The transition frequency between nonthermal coherent magnetic precessions and ultrafast demagnetization is arguably the most sought after answer in magnetism science and technology…
Generation of 1.5-octave intense infrared pulses by nonlinear interactions in DAST crystal
Carlo Vicario, Balazs Monoszlai, Gunnar Arisholm +1
Infrared pulses with large spectral width extending from 1.2 to 3.4 um are generated in the organic crystal DAST (4-N, N-dimethylamino-4-N-methylstilbazolium tosylate). The input p…
Anomalous visualization of sub-2 THz photons on standard silicon CCD and COMS sensors
Mostafa Shalaby, Carlo Vicario, Christoph P. Hauri
We experimentally show that indirect light-induced electron transitions could lead to THz detection on standard CCD and CMOS sensors, introducing this well-established technologica…
High energy terahertz pulses from organic crystals: DAST and DSTMS pumped at Ti:sapphire wavelength
B. Monoszlai, C. Vicario, M. Jazbinsek +1
High energy terahertz pulses are produced by optical rectification (OR) in organic crystals DAST and DSTMS by a Ti:sapphire amplifier system centered at 0.8 microns. The simple sch…
Field-driven femtosecond magnetization dynamics induced by ultrastrong coupling to THz transients
C. Ruchert, C. Vicario, F. Ardana-Lamas +4
Controlling ultrafast magnetization dynamics by a femtosecond laser is attracting interest both in fundamental science and industry because of the potential to achieve magnetic dom…