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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 10 — May. 12, 2008
  • pp: 7049–7054

Using the compensating effect for Rayleigh anomalies to design a type of broadband mid-IR grating

Shanwen Zhang and Bayanheshig  »View Author Affiliations

Optics Express, Vol. 16, Issue 10, pp. 7049-7054 (2008)

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We suggest and numerically demonstrate a specific design method of broadband mid-IR echelette grating. The method, which applies the compensating of the efficiency blaze in TM-plane polarization to Rayleigh anomalies, is called compensating effect method. This idea allows the grating designer to realize fully the considerable advantages of this type of echelette grating with an apex angle 90° and a blaze angle 19.47°, especially, it can be fabricated easily with conventional (holographic and ruled) techniques. Its diffraction efficiency in unpolarized light has a minimum value of 40%. The cases of Littrow mount and off-Littrow mount are both discussed.

© 2008 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory

ToC Category:
Diffraction and Gratings

Original Manuscript: March 3, 2008
Revised Manuscript: April 10, 2008
Manuscript Accepted: April 22, 2008
Published: May 1, 2008

Shanwen Zhang and Heshig Bayan, "Using the compensating effect for Rayleigh anomalies to design a type of broadband mid-IR grating," Opt. Express 16, 7049-7054 (2008)

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