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Applied Optics

Applied Optics


  • Vol. 39, Iss. 22 — Aug. 1, 2000
  • pp: 3854–3863

Two-channel tunable monochromatic illuminator with a concave diffraction grating and an original scanning system

Elena Sokolova, Vladimir Sokolov, and Amelia Nunes  »View Author Affiliations

Applied Optics, Vol. 39, Issue 22, pp. 3854-3863 (2000)

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A two-channel monochromatic illuminator with only one diffraction grating and an original scanning system has been designed for multiple applications. This scanning system consists of two rotational plane mirrors that reflect light diffracted by a concave diffraction grating to the ±1 orders of the spectrum. The light reflected by the mirrors goes to two exit slits that correspond to two channels of the device. The positions of the centers of rotation of the mirrors are selected to produce minimal deviation of the direction of the light reflected during the scanning. The aberration characteristics of some variations in the optical mounting of the device made by use of spherical and toroidal holographic diffraction gratings recorded in stigmatic and astigmatic beams, the possibilities for application of the device for measuring the color sensitivity of the human eye, and the possibilities for measuring the efficiency of concave diffraction gratings, are also discussed.

© 2000 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

Original Manuscript: December 23, 1999
Revised Manuscript: April 19, 2000
Published: August 1, 2000

Elena Sokolova, Vladimir Sokolov, and Amelia Nunes, "Two-channel tunable monochromatic illuminator with a concave diffraction grating and an original scanning system," Appl. Opt. 39, 3854-3863 (2000)

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