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Quantum Cascade Laser

The quantum cascade laser (QCL) is a semiconductor laser that can emit in the mid to far infrared range. Quantum cascade lasers are distinguished from other lasers by two features: unipolarity and cascade pattern.

Laser emission is achieved by inter-subband transition of a quantum confined structure, a quantum well, composed of a multitude of heterostructures. The multi-stage cascade scheme allows electrons to be recycled from one period to the next, contributing to the gain and emission of photons each time.

Discover our range of LaserTune widely tunable mid-infrared quantum cascade lasers.