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Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green's functions
T. Grange, D. Stark, G. Scalari +9
n-type Ge/SiGe terahertz quantum cascade laser are investigated using non-equilibrium Green's functions calculations. We compare the temperature dependence of the terahertz gain pr…
Room temperature surface emission on large-area photonic crystal quantum cascade lasers
Yong Liang, Zhixin Wang, Johanna Wolf +5
We design and fabricate large-area (1.1 mm 1.1 mm) photonic crystal quantum cascade lasers, enabling single-mode (wavelength 8.5 m) surface emission at room temp…
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…
Electric field correlation measurements on the electromagnetic vacuum state
Ileana-Cristina Benea-Chelmus, Francesca Fabiana Settembrini, Giacomo Scalari +1
Quantum mechanics ascribes to the ground state of the electromagnetic radiation zero-point electric field fluctuations that permeate empty space at all frequencies. No energy can b…
Magneto-transport controlled by Landau polariton states
Gian L. Paravicini-Bagliani, Felice Appugliese, Eli Richter +10
Hybrid excitations, called polaritons, emerge in systems with strong light-matter coupling. Usually, they dominate the linear and nonlinear optical properties with applications in…