53 citations · 152 across the 9 of their papers we have counts for
10 papers
Frequency-modulated combs via on-chip field enhancement
Urban Senica, Alexander Dikopoltsev, Andres Forrer +5
Frequency-modulated (FM) combs feature flat intensity spectra with a linear frequency chirp, useful for metrology and sensing applications. Generating FM combs in semiconductor las…
THz optical beat-note detection with a fast Hot Electron Bolometer operating up to 31 GHz
G. Torrioli, A. Forrer, M. Beck +10
We study the performance of an hot-electron bolometer (HEB) operating at THz frequencies based on superconducting niobium nitride films. We report on the voltage response of the de…
THz optical solitons from dispersion-compensated antenna-coupled planarized ring quantum cascade lasers
Paolo Micheletti, Urban Senica, Andres Forrer +6
Quantum Cascade Lasers (QCL) constitute an intriguing opportunity for the production of on-chip optical Dissipative Kerr Solitons (DKS): self-organized optical waves which can trav…
Planarized THz quantum cascade lasers for broadband coherent photonics
Urban Senica, Andres Forrer, Tudor Olariu +6
Recently, there has been a growing interest in integrated THz photonics for various applications in communications, spectroscopy and sensing. We present a new integrated photonic p…
Frequency chirped Fourier-Transform spectroscopy
Sergej Markmann, Martin Frankié, Mathieu Bertrand +6
Fast (sub-second) spectroscopy with high spectral resolution is of vital importance for revealing quantum chemistry kinetics of complex chemical and biological reactions. Fourier t…
Exceptional Point Singularities in Multi-Section DFB Lasers
Mehran Shahmohammadi, Martin J. Süess, Romain Peretti +4
A laser exhibits both controllable gain and loss and, under proper design conditions, is an ideal non-Hermitian system allowing the direct observation and engineering of spectral s…
Self-starting Harmonic Comb Emission in THz Quantum Cascade Lasers
Andres Forrer, Yongrui Wang, Mattias Beck +3
Harmonic comb state has proven to be emerging in quantum cascade lasers and promoted by an interplay between parametric gain and spatial hole burning. We report here on robust, pur…
An antipodal Vivaldi antenna for improved far-field properties and polarization manipulation of broadband terahertz quantum cascade lasers
Urban Senica, Elena Mavrona, Tudor Olariu +5
We present an antipodal Vivaldi antenna for broadband double metal waveguide terahertz quantum cascade lasers and frequency combs. Its exponentially curved flare profile results in…
Photon-driven broadband emission and RF injection locking of THz quantum cascade laser frequency combs
Andres Forrer, Martin Franckié, David Stark +4
We present homogeneous quantum cascade lasers (QCLs) emitting around 3 THz which display bandwidths up to 950 GHz with a single stable beatnote. Devices are spontaneously operating…
Coexisting frequency combs spaced by an octave in a monolithic quantum cascade laser
Andres Forrer, Markus Roesch, Matthew Singleton +3
Quantum cascade lasers are proving to be instrumental in the development of compact frequency comb sources at mid-infrared and terahertz frequencies. Here we demonstrate a heteroge…