167 citations · 538 across the 8 of their papers we have counts for
6 papers · 1 filter
Quantum cascade laser roadmap
Carlo Silvestri, Aleksandar D. Rakić, Dragan Indjin +46
Quantum cascade lasers (QCLs) are unipolar semiconductor lasers first demonstrated in 1994. Since then, they have played a central role in advancing mid-infrared and terahertz phot…
Sub-doppler trace-gas photoacoustic spectroscopy
Jacopo Pelini, Stefano Dello Russo, Chenghong Zhang +10
Molecules are emerging as new benchmark for metrology and fundamental physics research, driving the demand for spectroscopic techniques combining high sensitivity and resolution. P…
Bridging mid and near infrared by combining optomechanics and self mixing
Tecla Gabbrielli, Chenghong Zhang, Francesco Cappelli +8
This work describes a self-mixing-assisted optomechanical platform for transferring information between near- and mid-infrared radiation. In particular, the self-mixing signal of a…
Retrieval of phase relation and emission profile of quantum cascade laser frequency combs
Francesco Cappelli, Luigi Consolino, Giulio Campo +12
The major development recently undergone by quantum cascade lasers has effectively extended frequency comb emission to longer-wavelength spectral regions, i.e. the mid and far infr…
Observing the intrinsic linewidth of a quantum-cascade laser: beyond the Schawlow-Townes limit
S. Bartalini, S. Borri, P. Cancio +6
A comprehensive investigation of the frequency-noise spectral density of a free-running mid-infrared quantum-cascade laser is presented for the first time. It provides direct evide…
Saturated-absorption cavity ring-down spectroscopy
G. Giusfredi, S. Bartalini, S. Borri +4
We report on a novel approach to cavity-ring-down spectroscopy with the sample gas in saturated-absorption regime. This technique allows to decouple and simultaneously retrieve emp…