Mid-Infrared Reflectance Spectroscopy Based on External Cavity Quantum Cascade Lasers for Mineral Characterization

Mineral characterization using tunable external cavity quantum cascade lasers for mid-infrared reflectance spectroscopy is presented. Reflection spectra taken on common minerals are shown along with their spectral variations. Measurements at different incident angles were also obtained to mimic in the field applications. Finally, spectra were obtained on mineral mixtures and their analysis assesses the quality and usability of the technique for mineral characterization.

Automated summary

This study presents the characterization of minerals using tunable external cavity quantum cascade lasers for mid-infrared reflectance spectroscopy. Reflection spectra of common minerals and their variations are shown. Measurements at different incident angles were conducted to mimic field applications. Finally, the technique's quality and usability for mineral characterization were assessed through spectra obtained from mineral mixtures.