Direct hyperspectral dual-comb gas imaging in the mid-infrared Articles uri icon

publication date

  • September 2020

start page

  • 5335

end page

  • 5338

issue

  • 19

volume

  • 45

International Standard Serial Number (ISSN)

  • 0146-9592

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

abstract

  • In this Letter, we present and experimentally validate the first direct hyperspectral dual-comb gas imaging system operating in the mid-infrared region. This method provides an unmatched combination of super-fine spectral characterization and high temporal resolution without the need for thermal contrast between the target molecules and the background. In a proof-of-concept experiment, the system has allowed us to perform precision hyperspectral imaging of butane in the 3.4 µm band with a time resolution of 1 s.

keywords

  • interferometry; spectroscopy; hyperspectral; imaging method; interferograms; optical resolution; hyperspectral imaging