396 citations · 761 across the 16 of their papers we have counts for
19 papers
Compact fiber-based compression of a 1 W, 76 MHz Yb laser to 15 fs for broadband ultrafast applications
Marco Polastri, Erika Benedetti, Eva Arianna Aurelia Pogna +1
We demonstrate a compact scheme for generating sub-20-fs pulses from a commercial ytterbium femtosecond laser delivering 80 fs pulses at 76 MHz repetition rate with 1 W average pow…
Quantum cascade laser roadmap
Carlo Silvestri, Aleksandar D. Rakić, Dragan Indjin +46
Quantum cascade lasers (QCLs) are unipolar semiconductor lasers first demonstrated in 1994. Since then, they have played a central role in advancing mid-infrared and terahertz phot…
Ultrafast Optical Control of Exciton Diffusion in WSe/Graphene Heterostructures Revealed by Heterodyne Transient Grating Spectroscopy
Lukas Rieland, Julian Wagner, Robin Bernhardt +8
Using heterodyne transient grating spectroscopy, we observe a significant enhancement of exciton diffusion within a monolayer WSe stacked on top of graphene. We further demonst…
Lattice dynamics and elastic properties of black phosphorus
Eva A. A. Pogna, Alexeï Bosak, Alexandra Chumakova +4
We experimentally determine the lattice dynamics of black phosphorus layered crystals through a combination of x-ray diffuse scattering and inelastic x-ray scattering, and we ratio…
Electrically tuneable nonequilibrium optical response of graphene
Eva A. A. Pogna, Andrea Tomadin, Osman Balci +9
The ability to tune the optical response of a material via electrostatic gating is crucial for optoelectronic applications, such as electro-optic modulators, saturable absorbers, o…
Hot-Carrier Cooling in High-Quality Graphene is Intrinsically Limited by Optical Phonons
Eva A. A. Pogna, Xiaoyu Jia, Alessandro Principi +20
Many promising optoelectronic devices, such as broadband photodetectors, nonlinear frequency converters, and building blocks for data communication systems, exploit photoexcited ch…
Angle-tunable intersubband photoabsorption and enhanced photobleaching in twisted bilayer graphene
Eva A. A. Pogna, Xianchong Miao, Driele von Dreifus +7
Van der Waals heterostructures obtained by artificially stacking two-dimensional crystals represent the frontier of material engineering, demonstrating properties superior to those…
Tunable broadband light emission from graphene
Lavinia Ghirardini, Eva A. A. Pogna, Giancarlo Soavi +12
Graphene is an ideal material for integrated nonlinear optics thanks to its strong light-matter interaction and large nonlinear optical susceptibility. Graphene has been used in op…
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…
Unveiling the detection dynamics of semiconductor nanowire photodetectors by terahertz near-field nanoscopy
Eva A. A. Pogna, Mahdi Asgari, Valentina Zannier +3
Semiconductor nanowire field-effect transistors represent a promising platform for the development of room-temperature (RT) terahertz (THz) frequency light detectors due to the str…
Hot electrons modulation of third harmonic generation in graphene
G. Soavi, G. Wang, H. Rostami +8
Hot electrons dominate the ultrafast (fs-ps) optical and electronic properties of metals and semiconductors and they are exploited in a variety of applications including phot…
Tracking the connection between disorder and energy landscape in glasses using geologically hyperaged amber
E. A. A. Pogna, A. I. Chumakov, C. Ferrante +2
Fossil amber offers the unique opportunity of investigating an amorphous material which has been exploring its energy landscape for more than 110 Myears of natural aging. By applyi…
Solution processable and optically switchable 1D photonic structures
G. M. Paternò, C. Iseppon, A. D'Altri +9
In this work, we report the first demonstration of a solution processable, optically switchable 1D photonic crystal by implementing phototunable doped metal oxide nanocrystals. The…
Photo-Induced Bandgap Renormalization Governs the Ultrafast Response of Single-Layer MoS2
Eva A. A. Pogna, Margherita Marsili, Domenico De Fazio +9
Transition metal dichalcogenides (TMDs) are emerging as promising two-dimensional (2d) semiconductors for optoelectronic and flexible devices. However, a microscopic explanation of…
Out-of-plane heat transfer in van der Waals stacks: electron-hyperbolic phonon coupling
K. J. Tielrooij, N. C. H. Hesp, A. Principi +20
Van der Waals heterostructures have emerged as promising building blocks that offer access to new physics, novel device functionalities, and superior electrical and optoelectronic…
Probing equilibrium glass flow up to exapoise viscosities
E. A. A. Pogna, C. Rodríguez-Tinoco, G. Cerullo +3
Glasses are out-of-equilibrium systems aging under the crystallization threat. During ordinary glass formation, the atomic diffusion slows down rendering its experimental investiga…
Valley and spin dynamics in monolayer MoS
S. Dal Conte, F. Bottegoni, E. A. A. Pogna +10
Valleytronics targets the exploitation of the additional degrees of freedom in materials where the energy of the carriers may assume several equal minimum values (valleys) at non-e…
Charge photogeneration in few-layer MoS2
Tetiana Borzda, Christoph Gadermaier, Natasa Vujicic +12
The two-dimensional semiconductor MoS2 in its mono- and few-layer form is expected to have a significant exciton binding energy of several 100 meV, leading to the consensus that ex…
Acoustic-like dynamics of amorphous drugs in the THz regime
E. A. A. Pogna, C. Rodriguez-Tinoco, M. Krisch +2
The high frequency dynamics of Indomethacin and Celecoxib glasses has been investigated by inelastic x-ray scattering, accessing a momentum-energy region still unexplored in amorph…