1.1k citations · 3.8k across the 38 of their papers we have counts for
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Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
Leonardo Viti, Miriam Serena Vitiello
The discovery of graphene and its fascinating capabilities have triggered an unprecedented interest in inorganic two-dimensional (2D) materials. Van der Waals (vdW) layered materia…
Tunable, grating-gated, graphene-on-polyimide terahertz modulators
Alessandra Di Gaspare, Eva A. A. Pogna, Luca Salemi +10
We present an electrically switchable graphene terahertz (THz) modulator with a tunable-by-design optical bandwidth and we exploit it to compensate the cavity dispersion of a quant…
Thermoelectric graphene photodetectors with sub-nanosecond response times at Terahertz frequencies
Leonardo Viti, Alisson R. Cadore, Xinxin Yang +7
Ultrafast and sensitive (noise equivalent power <1 nWHz-1/2) light-detection in the Terahertz (THz) frequency range (0.1-10 THz) and at room-temperature is key for applications suc…
HBN-encapsulated, graphene-based room-temperature terahertz receivers with high speed and low noise
Leonardo Viti, David G. Purdie, Antonio Lombardo +2
Uncooled Terahertz (THz) photodetectors (PDs) showing fast (ps) response and high sensitivity (noise equivalent power (NEP) < ) over a broad (0.5THz-10THz) frequency r…
Optoelectronic devices, plasmonics and photonics with topological insulators
Antonio Politano, Leonardo Viti, Miriam S. Vitiello
Topological insulators are innovative materials with semiconducting bulk together with surface states forming a Dirac cone, which ensure metallic conduction in the surface plane. T…
Black phosphorus nanodevices at terahertz frequencies: photodetectors and future challenges
Leonardo Viti, Antonio Politano, Miriam Serena Vitiello
The discovery of graphene triggered a rapid rise of unexplored two-dimensional materials and heterostructures having optoelectronic and photonics properties that can be tailored on…
Near-field terahertz probes with room-temperature nanodetectors for subwavelength resolution imaging
Oleg Mitrofanov, Leonardo Viti, Enrico Dardanis +5
Near-field imaging with terahertz (THz) waves is emerging as a powerful technique for fundamental research in photonics and across physical and life sciences. Spatial resolution be…
High dynamic range, heterogeneous, terahertz quantum cascade lasers featuring thermally-tunable frequency comb operation over a broad current range
Katia Garrasi, Francesco P. Mezzapesa, Luca Salemi +7
We report on the engineering of broadband quantum cascade lasers (QCLs) emitting at Terahertz (THz) frequencies, which exploit a heterogeneous active region scheme and have a curre…
THz detection with epitaxial graphene field effect transistors on silicon carbide
F. Bianco, D. Perenzoni, D. Convertino +6
We report on room temperature THz detection by means of antenna-coupled field effect transistors fabricated by using epitaxial graphene grown on silicon carbide substrate. Two inde…
Unveiling spectral purity and tunability of terahertz quantum cascade laser sources based on intra-cavity difference frequency generation
Luigi Consolino, Seungyong Jung, Annamaria Campa +10
Terahertz sources based on intra-cavity difference-frequency generation in mid-infrared quantum cascade lasers (THz DFG-QCLs) have recently emerged as the first monolithic electric…