Owing to the recent technological advances in mid-infrared (3-15 µm; MIR) laser technology, especially cascade laser spectroscopy (CSL) has evolved into a state-of-the-art tool for the selective and sensitive quantification of trace analytes in liquid, solid, and gaseous state in a wide variety of sensing scenarios. High output power, narrow linewidths, single-mode operation, low power consumption, broad tunability and compact dimensions are just some of the most outstanding features of cascade lasers. The unique combination with mid-infrared fiberoptic facilitates the development of innovative MIR catheter technologies for analyzing cartilage damage in-vivo during arthroscopic surgery.
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