25 citations · 26 across the 6 of their papers we have counts for
6 papers
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…
Optical feedback induced irregular and chaotic dynamics in terahertz quantum cascade laser combs
Xiaoqiong Qi, Carlo Silvestri, Thomas Taimre +1
In this work, we systematically investigate the optical feedback dynamics of terahertz (THz) frequency combs generated from quantum cascade lasers (QCLs) using the effective semico…
Detectorless 3D terahertz imaging: achieving subwavelength resolution with reflectance confocal interferometric microscopy
Jorge Silva, Martin Plöschner, Karl Bertling +18
Terahertz imaging holds great potential for non-destructive material inspection, but practical implementation has been limited by resolution constraints. In this study, we present…
Shaping terahertz harmonic frequency combs with frequency dependent external reflectors
Carlo Silvestri, Xiaoqiong Qi, Thomas Taimre +1
We present a method for engineering harmonic frequency combs (HFCs) in the terahertz spectral region. This approach involves interfacing a quantum cascade laser (QCL) with an exter…
Frequency combs induced by optical feedback and harmonic order tunability in quantum cascade lasers
Carlo Silvestri, Xiaoqiong Qi, Thomas Taimre +1
This study investigates the interaction between frequency combs and optical feedback effects in Quantum Cascade Lasers (QCLs). The theoretical analysis reveals new phenomena arisin…
Multi-mode Dynamics of Terahertz Quantum Cascade Lasers: spontaneous and actively induced generation of dense and harmonic coherent regimes
Carlo Silvestri, Xiaoqiong Qi, Thomas Taimre +1
We present an extended study concerning the dynamics of dense and harmonic coherent regimes in quantum cascade lasers (QCLs) in a Fabry--Perot (FP) configuration emitting in the te…