An innovative laser for wavelengths between 3 and 4 μm, which could be applied in the fields of Electrical engineering & electronics and Measurement technology & microsystems, has been developed by the university. Infrared lasers with wavelengths in the range of 3 -4 μm are generally required in sensor systems for e.g. trace gas detection, as fundamental vibrationalrotational transitions (e.g. for C-H compounds) are in this wavelength range.
The invention describes a new interband cascade laser active region with wavelengths in the infrared. The wavelength can be tuned in a broad range from 3 to 4 μm, making it very suitable for Tunable Diode Laser Spectroscopy (TDLS). It is one of the first lasers to cover wavelengths above 3.5 μm.
The new laser-source improves the sensibility and functionality of sensors systems for e.g. trace gas detection. The main market segment for these wavelengths is the segment of hydrocarbon detection and monitoring. The broad tuning range is of interest for the sensing of multicomponent gas mixtures, e.g. in industrial (combustion diagnostics, leak detection) or medical applications (optical breath analyzers, blood glucose level sensors).
Feasibility has been shown. The epitaxy process has been established. The university offers support in bringing the technology to production.
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