Mid- and far-infrared semiconductor devices exploiting surface-plasmon waveguides

摘要

Quantum cascade lasers are versatile semiconductor laser sources which are able to cover the mid-infrared (λñ 5–20 µm) and THz (λñ60 – 200 µm) ranges of the electromagnetic spectrum. At these very long wavelengths, surface-plasmons (SP) can be used for waveguiding. In this talk, we will show how the metallic waveguides offer the opportunity of implementing new functionalities (single mode, well-behaved surface-emission…) for semiconductor lasers within a simple technological approach.