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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 25 — Sep. 1, 2000
  • pp: 4486–4489

Beam shape effects on grating spectrometer resolution

Edwin F. Erickson and David Rabanus  »View Author Affiliations


Applied Optics, Vol. 39, Issue 25, pp. 4486-4489 (2000)
http://dx.doi.org/10.1364/AO.39.004486


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Abstract

The collimated optical beam in a grating spectrometer may be circular or elliptical in cross section, so that different parts of the beam illuminate different numbers of grooves on the grating. Here we estimate the consequent loss in spectral resolution relative to that obtained with a beam that illuminates a fixed number of grooves. The effect reduces the intrinsic resolving power of the spectrometer by ∼15%, exclusive of other contributions such as finite entrance-slit width.

© 2000 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(050.1950) Diffraction and gratings : Diffraction gratings

History
Original Manuscript: March 21, 2000
Revised Manuscript: May 23, 2000
Published: September 1, 2000

Citation
Edwin F. Erickson and David Rabanus, "Beam shape effects on grating spectrometer resolution," Appl. Opt. 39, 4486-4489 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-25-4486

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