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2004
Journal Article
Titel
Infrared semiconductor lasers for sensing and diagnostics
Alternative
Infrarot-Halbleiterlaser für die Sensorik und Diagnostik
Abstract
There is an increasing demand for spectrally agile compact solid-state lasers for spectroscopic sensing and diagnostics. This demand can be met by III-V semiconductor-based lasers employing various design concepts for the active region. These concepts include, apart from the classical type-I interband diode laser, the type-II W-laser and the unipolar quantum cascade laser. Representative device data will be presented for these three types of lasers in conjunction with a discussion of the relative merits of the different active-region concepts.