Here, you’ll find all the recordings of the invited talks, which are also accessible on the official ETH repository.


Opening remarks by Jérôme Faist, ETH Zürich.


Session I, Interlevel emission from 2D systems

Session chair: Jérôme Faist, ETH Zürich


Erich Gornik,TU Wien. The long search for tunable THz lasers and sources.


Gérald Bastard, École Normale Supérieure, Paris. Describing the eigenstates and lifetimes of electrons in QCLs and other heterostructures.


Manfred Helm, Helmholtz-Zentrum Dresden-Rossendorf, TU Dresden. A personal journey through four decades of THz sources, or how I didn’t invent the QCL.


Session II, Non-linear optics in quantum structures

Session chair: Carlo Sirtori, ENS, Paris


Jacob Khurgin, Johns Hopkins University. Ambivalent role of intersubband scattering in QCLs, looking at it through the prism of time.


Kazuhiko Hirakawa, University of Tokyo. Quantum cascade structures for electron cooling.


Miriam Vitiello, CNR. Quantum cascade laser induced high harmonic generation in 2D materials.


Session III, Quantum Cascade Lasers

Session chair: Erich Gornik, TU Wien


Jérôme Faist, ETH Zürich. It lives and prospers with an ultrafast gain: the Quantum Cascade Laser turns thirty.


Carlo Sirtori, École Normale Supérieure, Paris. Patch-antenna laser arrays and a short discussion on materials for QC Lasers.


Session IV, Quantum Cascade Lasers – Technology and integration

Session chair: Edmund Linfield, University of Leeds


Gottfried Strasser, TU Wien. Quantum Cascade material systems: growth, processing, integration.


Mikhail Belkin, TU Munich. Intersubband polaritonic nonlinear metasurfaces for flat mid-infrared nonlinear optics.


Session V, Quantum Cascade Lasers – Frequency combs in circular cavities

Session chair: Karl Unterrainer, TU Wien


Alexander Dikopoltsev, ETH Zürich. Manipulation of liquid light in fast-gain lasers.


David Burghoff, University of Texas. Bandwidth limits and gain shaping of frequency-modulated combs.


Giacomo Scalari, ETH Zürich. THz Quantum cascade lasers: from FM combs to pulses…and back.


Session VI, Quantum Cascade Lasers – Applications

Session chair: Gottfried Strasser, TU Wien


Angela Vasanelli, Université Paris Cité. Unipolar quantum optoelectronics for free-space optical communications.


Lukas Emmenegger, EMPA. From the ground to the stratosphere – two decades of trace-gas detection by QCL direct absorption spectroscopy.


Jana Jagerska, The Arctic University of Norway. Mid-Infrared waveguides for on-chip laser absorption spectroscopy.


Session VII, Quantum Cascade Lasers – Frequency combs and dynamics

Session chair: Giacomo Scalari, ETH Zürich


Benedikt Schwarz, TU Wien. Driving frequency comb research through the synergy of theory and experiment.


Michael Schreiber, TU Munich. Maxwell-Bloch based modeling of RF-modulated ring Quantum Cascade Lasers.


Dmitry Kazakov, Harvard University. The twisted route of ring QCL combs: from confusion to conviction.


Session VIII, Quantum Cascade Lasers – Integration and design

Session chair: Jana Jagerska, The Arctic University of Norway


Joshua Freeman, University of Leeds. Temporal and spectral control of terahertz quantum cascade lasers.


Thomas Grange, Nextnano GmbH. QCL design evolution analysed through non-equilibrium Green’s function simulations.


Longqi Zhou, University of Sheffield. Hybrid integration of Mid-IR Quantum Cascade Lasers on Ge-on-Si platform for on-chip sensing applications.