Physics and technology of Terahertz quantum cascade lasers

MS Vitiello, A Tredicucci - Advances in Physics: X, 2021 - Taylor & Francis
Even though already in the seventies, right after the invention of the quantum cascade laser
(QCL) concept, it was argued that this device could be operated in the THz (far-infrared) …

Photonic engineering technology for the development of terahertz quantum cascade lasers

Y Zeng, B Qiang, QJ Wang - Advanced Optical Materials, 2020 - Wiley Online Library
A terahertz (THz) quantum cascade laser (QCL) is an electrically pumped semiconductor
laser based on the inter‐subband electron transitions in a multiple‐quantum‐well …

Tamm-cavity terahertz detector

X Tu, Y Zhang, S Zhou, W Tang, X Yan, Y Rui… - Nature …, 2024 - nature.com
Efficiently fabricating a cavity that can achieve strong interactions between terahertz waves
and matter would allow researchers to exploit the intrinsic properties due to the long …

Graphene‐coupled terahertz semiconductor lasers for enhanced passive frequency comb operation

H Li, M Yan, W Wan, T Zhou, K Zhou, Z Li… - Advanced …, 2019 - Wiley Online Library
Optical frequency combs, consisting of well‐controlled equidistant frequency lines, have
been widely used in precision spectroscopy and metrology. Terahertz combs have been …

Frequency-tunable continuous-wave random lasers at terahertz frequencies

S Biasco, HE Beere, DA Ritchie, L Li… - Light: Science & …, 2019 - nature.com
Random lasers are a class of devices in which feedback arises from multiple elastic
scattering in a highly disordered structure, providing an almost ideal light source for artefact …

A tunable unidirectional source for GUSTO's local oscillator at 4.74 THz

A Khalatpour, AK Paulsen… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
The Galactic/Extra Ultra-Long-Duration Balloon Spectroscopic-Stratospheric Terahertz
Observatory (GUSTO) is a NASA balloon-borne project and is scheduled for launch in late …

Spin high harmonic generation through terahertz laser-driven phonons

NM Allafi, MH Kolodrubetz, M Bukov, V Oganesyan… - Physical Review B, 2024 - APS
In the realm of open quantum systems, steady states and high-harmonic generation (HHG)
existing far from equilibrium have become core pillars of ultrafast science. Most solid-state …

Predictions of resonant mode characteristics for terahertz quantum cascade lasers with distributed feedback utilizing machine learning

P Tang, X Chi, B Chen, C Wu - Optics Express, 2021 - opg.optica.org
Terahertz quantum cascade lasers (THz QCLs) are the most powerful solid-state THz
sources so far and THz QCLs with various distributed feedback (DFB) gratings have …

Highly efficient surface-emitting semiconductor lasers exploiting quasi-crystalline distributed feedback photonic patterns

S Biasco, A Ciavatti, L Li, A Giles Davies… - Light: Science & …, 2020 - nature.com
Quasi-crystal distributed feedback lasers do not require any form of mirror cavity to amplify
and extract radiation. Once implemented on the top surface of a semiconductor laser, a …

On-chip dual-comb source based on terahertz quantum cascade lasers under microwave double injection

Z Li, W Wan, K Zhou, X Liao, S Yang, Z Fu, JC Cao… - Physical Review …, 2019 - APS
High-power and broadband dual-comb sources in the terahertz frequency regime are much
in demand for fast and high-resolution spectroscopies. The terahertz quantum cascade laser …