Alpes Lasers Sa

Antoine Muller

Mattias Beck

J&eacute;r&ocirc;me Faist

Alfredo Bismuto

Jérôme Faist

Richard Maulini

Johanna Wolf

Quantum cascade laser especially comprising a gain region () formed from several layers () which each comprise: The layers of the gain region () each constitute an active region extending from one to the other of the injection barriers () which are adjacent to it. The strata () are dimensioned such that:

Quantum cascade laser

Quantum cascade laser with optical phonon excitation

The invention concerns a quantum cascade laser, comprising a substrate, a stack of layers, having a prismatic shape with substantially trapezoidal cross-section, comprising a lower surface arranged on the substrate, an upper surface and lateral surfaces, said stack forming a gain region and two walls between which the region is interposed, two electrodes arranged on either side of the stack, one of which is formed by an electrically conductive material layer covering at least partially the surface of the stack opposite the substrate, and an electrically insulating layer interposed between the two electrodes. The invention is characterised in that the electrically insulating layer completely covers the lateral surfaces of the prism, without overlapping on the upper surface, and its thickness is equal to at least a third of the stack thickness.

Quantum cascade laser and method for making same

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Neuchâtel, Switzerland

Antoine Muller