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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 8 — Aug. 1, 1982
  • pp: 1056–1061

High-efficiency concave-grating monochromator with wavelength-independent focusing characteristics

D. E. Aspnes  »View Author Affiliations

JOSA, Vol. 72, Issue 8, pp. 1056-1061 (1982)

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A cylindrical grating with tangential focusing provided by exponentially spaced grooves can be used by itself or in conjunction with an elliptical mirror to construct a monochromator that has better resolution over its entire tuning range than a toroidal-grating monochromator has at its optimum wavelength. In contrast to conventional Wadsworth or Rowland circle designs, a cylindrical-grating monochromator is always in focus, always on blaze with respect to the principal ray, has wavelength-independent resolution and focusing properties, and can be tuned over an order of magnitude with a simple linear motion.

© 1982 Optical Society of America

D. E. Aspnes, "High-efficiency concave-grating monochromator with wavelength-independent focusing characteristics," J. Opt. Soc. Am. 72, 1056-1061 (1982)

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