Open AccessFirst order design of compact, broadband, high spectral resolution ultraviolet-visible imaging spectrometer
Author(s) -
Qinghua Yang
Publication year - 2020
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.384603
Subject(s) - optics , spectrometer , spectral resolution , interferometry , physics , spectral imaging , broadband , imaging spectrometer , detector , ultraviolet , wavelength , resolution (logic) , materials science , spectral line , computer science , astronomy , artificial intelligence
An imaging spectrometer combining an entrance slit, a Fabry-Perot interferometer (FPI) and a plane transmission grating is presented. Each unit of the entrance slit is imaged on a separate column of the detector and different wavelengths are dispersed across different rows of that column. To cover the full spectral range, the FPI needs to scan N steps. For each unit of the entrance slit, one spectrum is obtained at each FPI spacing position and a total of N spectra are sequentially obtained to constitute a high resolution spectrum. The combination of imaging, interferometry and dispersive spectrometry enables the instrument to obtain spatial information and high-resolution spectral information of a broadband source in the ultraviolet-visible spectral region. First-order approximations of system performance are given. The unique design of the optics will make the instrument compact and suitable for high-spectral-resolution broadband ultraviolet-visible spectral imaging.