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Proceedings Paper

Fundamental performance improvement to dispersive spectrograph based imaging technologies
Author(s): Jeff T. Meade; Bradford B. Behr; Andrew T. Cenko; Peter Christensen; Arsen R. Hajian; Jan Hendrikse; Frederic D. Sweeney
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Paper Abstract

Dispersive-based spectrometers may be qualified by their spectral resolving power and their throughput efficiency. A device known as a virtual slit is able to improve the resolving power by factors of several with a minimal loss in throughput, thereby fundamentally improving the quality of the spectrometer. A virtual slit was built and incorporated into a low performing spectrometer (R ~ 300) and was shown to increase the performance without a significant loss in signal. The operation and description of virtual slits is also given. High-performance, lowlight, and high-speed imaging instruments based on a dispersive-type spectrometer see the greatest impact from a virtual slit. The impact of a virtual slit on spectral domain optical coherence tomography (SD-OCT) is shown to improve the imaging quality substantially.

Paper Details

Date Published: 21 February 2011
PDF: 9 pages
Proc. SPIE 7890, Advanced Biomedical and Clinical Diagnostic Systems IX, 789013 (21 February 2011); doi: 10.1117/12.874995
Show Author Affiliations
Jeff T. Meade, Univ. of Waterloo (Canada)
Bradford B. Behr, Univ. of Waterloo (Canada)
Andrew T. Cenko, Univ. of Waterloo (Canada)
Peter Christensen, Tornado Medical Systems (Canada)
Arsen R. Hajian, Univ. of Waterloo (Canada)
Tornado Medical Systems (Canada)
Jan Hendrikse, Tornado Medical Systems (Canada)
Frederic D. Sweeney, Tornado Medical Systems (Canada)


Published in SPIE Proceedings Vol. 7890:
Advanced Biomedical and Clinical Diagnostic Systems IX
Anita Mahadevan-Jansen; Tuan Vo-Dinh; Warren S. Grundfest M.D., Editor(s)

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