BROWSE
Detail
Journal Article
Hyperspectral push-broom imager using a volume Bragg grating as an angular filter
- Authors
- Jung-Ho Song, Young-Hwan Kwon
- Issue Date
- 2024-03
- Citation
- Optics Express, v.32, no.6, pp.8736-8750
- ISSN
- 1094-4087
- Publisher
- Optica Publishing Group
- Language
- English
- Type
- Journal Article
- Abstract
- A hyperspectral push-broom imager has been designed, constructed, and tested. The narrow angular selectivity of a weakly index modulated volume Bragg grating is utilized to replace the objective lens, slit, and collimating lens of a conventional slit-based hyperspectral push-broom imager. The imager comprises a dispersion grating, an angular filter grating, a focusing lens, and an image sensor. The imager has a field of view (FOV) of 17 degrees in the spatial direction, a spectral range from 400 nm to 900 nm, and a spectral resolution of 2.1 nm. The acquired hyperspectral data cubes are presented, and the influence of wavelength-dependent incident angle errors is analyzed.
- KSP Keywords
- Angular selectivity, Bragg grating(FBG), Collimating lens, Data cube, Field of view(FOV), Focusing lens, Hyperspectral data, Image Sensor, Incident angle, Objective lens, Spectral range