282 citations · 543 across the 7 of their papers we have counts for
8 papers
Broadband monolithic extractor for metal-metal waveguide based terahertz quantum cascade laser frequency combs
Markus Rösch, Ileana-Cristina Benea-Chelmus, Christopher Bonzon +4
We present a monolithic solution to extract efficiently light from terahertz quantum cascade lasers with metal-metal waveguides suitable for broadband frequency comb applications.…
Intensity autocorrelation measurements of quantum cascade laser frequency combs in the Terahertz range
Ileana-Cristina Benea-Chelmus, Markus Rösch, Giacomo Scalari +2
We report on the first direct measurement of the emission character of quantum cascade laser based frequency combs, using intensity autocorrelation. The correlation technique is ba…
Ultra-broadband quantum cascade laser operating from 1.88 to 3.82 THz
Markus Rösch, Mattias Beck, Martin J. Süess +4
We report on a heterogeneous active region design for terahertz quantum cascade laser based frequency combs. Dynamic range, spectral bandwidth as well as output power have been sig…
Negative free carrier absorption in terahertz quantum cascade lasers
C. Ndebeka-Bandou, M. Rösch, K. Ohtani +2
We analyze the peculiar case where the free carrier absorption arising from LO phonon absorption-assisted transitions becomes negative and therefore turns into a gain source for qu…
Short pulse generation and mode control of broadband terahertz quantum cascade lasers
Dominic Bachmann, Markus Rösch, Martin J. Süess +5
We report on a waveguide engineering technique that enables the generation of a bandwidth up to 1 THz and record ultra-short pulse length of 2.5 ps in injection seeded terahertz qu…
On-chip, self-detected THz dual-comb spectrometer
Markus Rösch, Giacomo Scalari, Gustavo Villares +3
We present a directly generated on-chip dual-comb source at THz frequencies. The multi-heterodyne beating signal of two free-running THz quantum cascade laser frequency combs is me…
Quantum Cascade Laser Frequency Combs
Jérôme Faist, Gustavo Villares, Giacomo Scalari +4
It was recently demonstrated that broadband quantum cascade lasers can operate as frequency combs. As such, they operate under direct electrical pumping at both mid-infrared and TH…
Octave-spanning semiconductor laser
Markus Rösch, Giacomo Scalari, Mattias Beck +1
We present here a semiconductor injection laser operating in continuous wave with an emission covering more than one octave in frequency, and displaying homogeneous power distribut…