112 citations · 648 across the 26 of their papers we have counts for
28 papers
8x8 Patch-Antenna-Coupled TeraFET Detector Array for Terahertz Quantum-Cascade-Laser Applications
Jakob Holstein, Nicholas K. North, Michael D. Horbury +10
Monolithically integrated, antenna-coupled field-effect transistors (TeraFETs) are rapid and sensitive detectors for the terahertz range (0.3-10~THz) that can operate at room tempe…
Sculpting harmonic comb states in terahertz quantum cascade lasers by controlled engineering
Elisa Riccardi, M. Alejandro Justo Guerrero, Valentino Pistore +6
Optical frequency combs (FCs), that establish a rigid phase-coherent link between the microwave and optical domains of the electromagnetic spectrum, are emerging as a key high-prec…
Liquid-Crystal-Based Controllable Attenuators Operating in the 1-4 Terahertz Band
Aniela Dunn, Zhaopeng Zhang, Michael D. Horbury +12
Liquid-crystal devices (LCDs) offer a potential route toward adaptive optical components for use in the < 2 THz band of the electromagnetic spectrum. We demonstrate LCDs using a co…
Detection of strong light-matter interaction in a single nano-cavity with a thermal transducer
Mario Malerba, Simone Sotgiu, Andrea Schirato +11
Recently, the concept of strong light-matter coupling has been demonstrated in semiconductor structures, and it is poised to revolutionize the design and implementation of componen…
Ultrashort pulse generation from a graphene-coupled passively mode-locked terahertz laser
Elisa Riccardi, Valentino Pistore, Seonggil Kang +10
The generation of stable trains of ultra-short (fs-ps), terahertz (THz)-frequency radiation pulses, with large instantaneous intensities, is an underpinning requirement for the inv…
10 Gbit/s free space data transmission at 9 m wavelength with unipolar quantum optoelectronics
Hamza Dely, Thomas Bonazzi, Olivier Spitz +12
The realization of high-frequency unipolar quantum optoelectronic devices enables the demonstration of high bitrate free space data transmission in the second atmospheric window. D…
Ultrabroadband THz/IR upconversion and photovoltaic response in semi-conductor ratchet based upconverter
Peng Bai, Ning Yang1, Weidong Chu +12
An ultrabroadband upconversion device is demonstrated by direct tandem integration of a p-type GaAs/AlxGa1-xAs ratchet photodetector (RP) with a GaAs double heterojunction LED (DH-…
Realization of ultrabroadband THz/IR photoresponse in a bias-tunable ratchet photodetector
Peng Bai, Xiaohong Li, Ning Yang +14
High performance Terahertz (THz) photodetector has drawn wide attention and got great improvement due to its significant application in biomedical, astrophysics, nondestructive ins…
A "Janus" double sided mid-IR photodetector based on a MIM architecture
Mario Malerba, Mathieu Jeannin, Stefano Pirotta +6
We present a mid-IR ( 8.3 m) quantum well infrared photodetector (QWIP) fabricated on a mid-IR transparent substrate, allowing photodetection with illumination from ei…
Chip-scale terahertz frequency combs through integrated intersubband polariton bleaching
Francesco P. Mezzapesa, Leonardo Viti, Lianhe Li +5
Quantum cascade lasers (QCLs) represent a fascinating accomplishment of quantum engineering and enable the direct generation of terahertz (THz) frequency radiation from an electric…
High temperature metamaterial terahertz quantum detector
Mathieu Jeannin, Thomas Bonazzi, Djamal Gacemi +7
We demonstrate a high temperature performance quantum detector of Terahertz (THz) radiation based on three-dimensional metamaterial. The metamaterial unit cell consists of an induc…
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…
Quantum Cascade Laser Based Hybrid Dual Comb Spectrometer
Luigi Consolino, Malik Nafa, Michele De Regis +9
Four-wave-mixing-based quantum cascade laser frequency combs (QCL-FC) are a powerful photonic tool, driving a recent revolution in major molecular fingerprint regions, i.e. mid- an…
Long-wavelength infrared photovoltaic heterodyne receivers using patch-antenna quantum cascade detectors
Azzurra Bigioli, Giovanni Armaroli, Angela Vasanelli +7
Quantum cascade detectors (QCD) are unipolar infrared devices where the transport of the photo excited carriers takes place through confined electronic states, without an applied b…
Quasi-static and propagating modes in three-dimensional THz circuits
Mathieu Jeannin, Djamal Gacemi, Angela Vasanelli +6
We provide an analysis of the electromagnetic modes of three-dimensional metamaterial resonators in the THz frequency range. The fundamental resonance of the structures is fully de…
Optomechanical response with nanometer resolution in the self-mixing signal of a terahertz quantum cascade laser
Andrea Ottomaniello, James Keeley, Pierluigi Rubino +7
The effectiveness of self-mixing interferometry has been demonstrated across the electromagnetic spectrum, from visible to microwave frequencies, in a plethora of sensing applicati…
Ultrafast two-dimensional field spectroscopy of terahertz intersubband saturable absorbers
Jürgen Raab, Christoph Lange, Jessica L. Boland +9
Intersubband (ISB) transitions in semiconductor multi-quantum well (MQW) structures are promising candidates for the development of saturable absorbers at terahertz (THz) frequenci…
Ultra-Strong Light-Matter Coupling in Deeply Subwavelength THz LC resonators
Mathieu Jeannin, Giacomo Mariotti Nesurini, Stéphan Suffit +7
The ultra-strong light-matter coupling regime has been demonstrated in a novel three-dimensional inductor-capacitor (LC) circuit resonator, embedding a semiconductor two-dimensiona…
Fully phase-stabilized quantum cascade laser frequency comb
Luigi Consolino, Malik Nafa, Francesco Cappelli +8
Optical frequency comb synthesizers (FCs) [1] are laser sources covering a broad spectral range with a number of discrete, equally spaced and highly coherent frequency components,…
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…
Ultrafast terahertz detectors based on three-dimensional meta-atoms
B. Paulillo, S. Pirotta, H. Nong +8
Terahertz (THz) and sub-THz frequency emitter and detector technologies are receiving increasing attention, underpinned by emerging applications in ultra-fast THz physics, frequenc…
Room temperature 9 m photodetectors and GHz heterodyne receivers
Daniele Palaferri, Yanko Todorov, Azzurra Bigioli +11
Room temperature operation is mandatory for any optoelectronics technology which aims to provide low-cost compact systems for widespread applications. In recent years, an important…
Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings
F. Castellano, S. Zanotto, L. H. Li +5
We have developed terahertz frequency quantum cascade lasers that exploit a double-periodicity distributed feedback grating to control the emission frequency and the output beam di…
Excitation, detection, and electrostatic manipulation of terahertz-frequency range plasmons in a two-dimensional electron system
Jingbo Wu, Alexander S. Mayorov, Christopher D. Wood +8
Terahertz time domain spectroscopy employing free-space radiation has frequently been used to probe the elementary excitations of low-dimensional systems. The diffraction limit blo…