Toward new frontiers for terahertz quantum cascade laser frequency combs

MS Vitiello, L Consolino, M Inguscio, P De Natale - Nanophotonics, 2020 - degruyter.com
Broadband, quantum-engineered, quantum cascade lasers (QCLs) are the most powerful
chip-scale sources of optical frequency combs (FCs) across the mid-infrared and the …

Direct observation of terahertz frequency comb generation in difference-frequency quantum cascade lasers

L Consolino, M Nafa, M De Regis, F Cappelli… - Applied Sciences, 2021 - mdpi.com
Terahertz quantum cascade laser sources based on intra-cavity difference frequency
generation from mid-IR devices are an important asset for applications in rotational …

Sculpting harmonic comb states in terahertz quantum cascade lasers by controlled engineering

E Riccardi, MAJ Guerrero, V Pistore, L Seitner… - Optica, 2024 - opg.optica.org
Optical frequency combs (OFCs), which establish a rigid phase-coherent link between the
microwave and optical domains of the electromagnetic spectrum, are emerging as key high …

Heterogeneous terahertz quantum cascade lasers exceeding 1.9 THz spectral bandwidth and featuring dual comb operation

M Rösch, M Beck, MJ Süess, D Bachmann… - …, 2018 - degruyter.com
We report on a heterogeneous active region design for terahertz quantum cascade laser
based frequency combs. Dynamic range, spectral bandwidth and output power have been …

Chip‐Scale Terahertz Frequency Combs through Integrated Intersubband Polariton Bleaching

FP Mezzapesa, L Viti, L Li, V Pistore… - Laser & Photonics …, 2021 - Wiley Online Library
Quantum cascade lasers (QCLs) represent a fascinating accomplishment of quantum
engineering and enable the direct generation of terahertz (THz) frequency radiation from an …

Terahertz frequency combs exploiting an on-chip, solution-processed, graphene-quantum cascade laser coupled-cavity

FP Mezzapesa, K Garrasi, J Schmidt, L Salemi… - ACS …, 2020 - ACS Publications
The ability to engineer quantum-cascade-lasers (QCLs) with ultrabroad gain spectra, and
with a full compensation of the group velocity dispersion, at terahertz (THz) frequencies, is …

Tunable and compact dispersion compensation of broadband THz quantum cascade laser frequency combs

FP Mezzapesa, V Pistore, K Garrasi, L Li, AG Davies… - Optics …, 2019 - opg.optica.org
Miniaturized frequency combs (FCs) can be self-generated at terahertz (THz) frequencies
through four-wave mixing in the cavity of a quantum cascade laser (QCL). To date, however …

Broadband terahertz photonics

DP Burghoff - 2014 - dspace.mit.edu
In recent years, quantum cascade lasers have emerged as mature semiconductor sources of
light in the terahertz range, the frequency range spanning 1 to 10 THz. Though technological …

High dynamic range, heterogeneous, terahertz quantum cascade lasers featuring thermally tunable frequency comb operation over a broad current range

K Garrasi, FP Mezzapesa, L Salemi, L Li… - ACS …, 2018 - ACS Publications
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 …

Engineering the spectral bandwidth of quantum cascade laser frequency combs

M Beiser, N Opačak, J Hillbrand, G Strasser… - Optics Letters, 2021 - opg.optica.org
Quantum cascade lasers (QCLs) facilitate compact optical frequency comb sources that
operate in the mid-infrared and terahertz spectral regions, where many molecules have their …