Hyperspectral imaging in the ultraviolet to visible spectral region has applications in astronomy, biology, chemistry, medical sciences, etc. A novel electronically tunable, random-wavelength access, compact, no-moving-parts, vibration-insensitive, computer-controlled hyperspectral imager operating from 220 to 480 nm with a spectral resolution of 160 cm−1, e.g., 2 nm at 350 nm, has been developed by use of a KDP acousto-optic tunable filter (AOTF) with an enhanced CCD camera and a pair of crossed calcite Glan-Taylor polarizing prisms. The linear and angular apertures of the AOTF are 1.5 × 1.5 cm2 and 1.2°, respectively. Imager setup and spectral imaging results as well as analyses and discussion of various factors affecting image quality are presented.
© 2004 Optical Society of America
(110.0110) Imaging systems : Imaging systems
(110.2970) Imaging systems : Image detection systems
(110.3000) Imaging systems : Image quality assessment
(230.1040) Optical devices : Acousto-optical devices
(260.7190) Physical optics : Ultraviolet
Neelam Gupta and Vitaly Voloshinov, "Hyperspectral Imager, from Ultraviolet to Visible, with a KDP Acousto-Optic Tunable Filter," Appl. Opt. 43, 2752-2759 (2004)