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Proceedings Paper

Double Bragg grating tunable filter
Author(s): Sebastien Blais-Ouellette; Edward H. Wishnow; Patrick L Shopbell; Wil van Breugel; Keith Taylor; Roger Smith
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Paper Abstract

A novel concept for a very efficient tunable filter for the optical and near infrared is proposed. The filter consists of two parallel volume phase holographic Bragg gratings used in a dispersion-recombination configuration. The passband profile is determined by the first order grating efficiency curve which changes in wavelength according to the angle of incidence. The filter can be continuously tuned over ranges of wavelengths larger than 600 nm by adjusting the tilt of the gratings, while bandwidth can be selected between 0.1 and 200 nm. The conceptual design is presented, along with predicted performances. Potentially useful instruments for large volume surveys and targeted observations are explored, along with application in areas other than astronomy.

Paper Details

Date Published: 30 September 2004
PDF: 8 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.551743
Show Author Affiliations
Sebastien Blais-Ouellette, Photon etc. Inc. (Canada)
California Institute of Technology (United States)
Edward H. Wishnow, Lawrence Livermore National Lab. (United States)
Patrick L Shopbell, California Institute of Technology (United States)
Wil van Breugel, Lawrence Livermore National Lab. (United States)
Keith Taylor, California Institute of Technology (United States)
Roger Smith, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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