Open AccessInfrared hyperspectral imaging using a broadly tunable external cavity quantum cascade laser and microbolometer focal plane array
Author(s) -
Mark C. Phillips,
Nicolas Hô
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.001836
Subject(s) - microbolometer , optics , hyperspectral imaging , quantum cascade laser , materials science , laser , cardinal point , optoelectronics , infrared , far infrared laser , detector , bolometer , physics , remote sensing , geology
A versatile mid-infrared hyperspectral imaging system is demonstrated by combining a broadly tunable external cavity quantum cascade laser and a microbolometer focal plane array. The tunable midinfrared laser provided high brightness illumination over a tuning range from 985 cm(-1) to 1075 cm(-1) (9.30-10.15 mum). Hypercubes containing images at 300 wavelengths separated by 0.3 cm(-1) were obtained in 12 s. High spectral resolution chemical imaging of methanol vapor was demonstrated for both static and dynamic systems. The system was also used to image and characterize multiple component liquid and solid samples.