Direct hyperspectral dual-comb imaging
Articles
Overview
published in
- Optica Journal
publication date
- March 2020
start page
- 199
end page
- 202
issue
- 3
volume
- 7
Digital Object Identifier (DOI)
full text
International Standard Serial Number (ISSN)
- 2334-2536
abstract
- Even though dual-comb-based systems are employed almost routinely nowadays in an ever-increasing number of applica-tions, an efficient combination of this effective technique withan imaging arrangement, which would undoubtedly revolu-tionize hyperspectral imaging, had not yet been demonstrated. Here we present, to our knowledge, the first hyperspectral dual-comb imaging system in which interferograms are directly detected by a video camera. The system, based on a dual-comb scheme capable of consistently generating interfer-ograms at a rate of 1 Hz and below, combines fast hyperspectral imaging with unprecedented optical resolution and fully multiplex operation. Various proof-of-principle experiments demonstrating hyperspectral imaging of molecular resonances have proved that the direct hyperspectral dual-comb imaging method presented here is capable of characterizing a scene with super-fine resolution in a narrow optical span within 1 s.
Classification
subjects
- Electronics
keywords
- interferometry; spectroscopy; video cameras; fine resolution; hyperspectral; imaging method; interferograms; molecular resonances; optical resolution; proof-of-principle experiments; hyperspectral imaging