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Proceedings Paper

Dual-channel spectral imaging with spectral zooming capability
Author(s): Bing Chen; Michael R. Wang; Jame J. Yang
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Paper Abstract

In this paper, a dual-channel spectral imaging system with agile spectral band access and spectral bandwidth tuning capability is presented. A diffractive grating is used as the spectral dispersion element for the dual-channel spectral imaging system. A 4-f spectral filtering channel using an adjustable slit is set up at the first diffraction order of the grating to realize coarse spectral band selection. An acousto-optic tunable filter selectively filters the spectrum of the non-dispersed zero order to realize fine spectral imaging. The spectral zooming function is achieved without increasing spectral frame number facilitating real-time spectral imaging operation. Feasibility of the spectral imaging has been demonstrated through preliminary experiments. Minimum 6 nm spectral resolution and 1.2° field of view have been achieved. The real-time spectral imaging capable of wide spectral band operation without loosing desired fine spectral capability is particularly useful for a variety of defense, medical, and environmental monitoring applications.

Paper Details

Date Published: 27 August 2008
PDF: 8 pages
Proc. SPIE 7086, Imaging Spectrometry XIII, 70860M (27 August 2008); doi: 10.1117/12.800481
Show Author Affiliations
Bing Chen, Univ. of Miami (United States)
Michael R. Wang, Univ. of Miami (United States)
Jame J. Yang, New Span Opto-Technology, Inc. (United States)


Published in SPIE Proceedings Vol. 7086:
Imaging Spectrometry XIII
Sylvia S. Shen; Paul E. Lewis, Editor(s)

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