Quantum Cascade lasers for sensing (Conference Presentation)

The quantum cascade laser has opened the mid-infrared for sensing applications. A key feature of that device is that through quantum engineering, emission can be achieved throughout the mid-infrared from the same active region material. On important novel developments is the quantum cascade surface emitting laser promise, through the very low footprint and dissipation, enables cheap and portable sensors. The other is the quantum walk laser, in which the emission spectrum can be engineered actively by radiofrequency injection.