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Optics Letters

Optics Letters


  • Vol. 30, Iss. 12 — Jun. 15, 2005
  • pp: 1464–1466

All-reflective snapshot hyperspectral imager for ultraviolet and infrared applications

William R. Johnson, Daniel W. Wilson, and Greg Bearman  »View Author Affiliations

Optics Letters, Vol. 30, Issue 12, pp. 1464-1466 (2005)

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Snapshot hyperspectral imaging simultaneously acquires spatial and spectral information about a scene. We report on the first, to our knowledge, all-reflective snapshot hyperspectral imager in the form of a computed tomography imaging spectrometer (CTIS). The reflective design allows for instrument simplicity for applications in the ultraviolet and infrared. To realize a CTIS in a reflective Offner configuration, a reflective two-dimensional computer-generated hologram grating is fabricated on a convex spherical substrate by direct-write electron-beam lithography. Furthermore, a reconfigurable reflective field stop is implemented with a micromirror array to provide high-contrast spatial-spectral filtering, region-of-interest selection, and spatial structure formation.

© 2005 Optical Society of America

OCIS Codes
(090.1970) Holography : Diffractive optics
(100.6950) Image processing : Tomographic image processing
(110.0110) Imaging systems : Imaging systems
(300.6190) Spectroscopy : Spectrometers

William R. Johnson, Daniel W. Wilson, and Greg Bearman, "All-reflective snapshot hyperspectral imager for ultraviolet and infrared applications," Opt. Lett. 30, 1464-1466 (2005)

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