Forschungszentrum Rossendorf E.v.

Humboldt-universtaet Zu Berlin

Sebastian Dressler

Mykhaylo Semtsiv

William Ted Masselink

Manfred Helm

Nikolai Georgiev

Thomas Dekorsy

Mathias Ziegler

A quantum cascade laser structure in accordance with the invention comprises a number of cascades (), each of which comprises a number of alternately arranged quantum wells (to) and barrier layers (to). The material of at least one quantum well (to) as well as the material of at least one barrier layer (to) is under mechanical strain, with the respective strain being either a tensile strain or a compression strain. The quantum wells (to) and barrier layers (to) are engineered in the quantum cascade laser structure in accordance with the invention so that existing strains are largely compensated within a cascade (). In the quantum cascade laser structure in accordance with the invention, each material of the quantum wells (to) has only one constituent material and the material of at least one barrier layer () has at least two constituent materials ().

Quantum cascade laser structure

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Berlin, Germany

Sebastian Dressler