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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 24 — Aug. 20, 2008
  • pp: 4321–4330

Step method: a new synthesis method for the design of optical filters with intermediate refractive indices

Stéphane Larouche and Ludvik Martinu  »View Author Affiliations


Applied Optics, Vol. 47, Issue 24, pp. 4321-4330 (2008)
http://dx.doi.org/10.1364/AO.47.004321


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Abstract

We propose a new synthesis method for the design of multilayer optical filters with intermediate refractive indices, the step method. This method consists in adding infinitesimally small index steps in the index profile at optimal positions and then reoptimizing the thickness and the refractive index of the layers. Application of the method to the design of an antireflective coating, a low-pass edge filter, and an immersed polarizing beam splitter shows that it provides interesting solutions, even in the absence of a proper starting design. The formalism developed for the method also serves to demonstrate that the optimal filter consists of either homogeneous layers that maximize the effective refractive index contrast, or of graded-index layers.

© 2008 Optical Society of America

OCIS Codes
(310.0310) Thin films : Thin films
(310.1620) Thin films : Interference coatings
(310.5696) Thin films : Refinement and synthesis methods

ToC Category:
Thin Films

History
Original Manuscript: May 13, 2008
Revised Manuscript: July 9, 2008
Manuscript Accepted: July 11, 2008
Published: August 13, 2008

Citation
Stéphane Larouche and Ludvik Martinu, "Step method: a new synthesis method for the design of optical filters with intermediate refractive indices," Appl. Opt. 47, 4321-4330 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-24-4321

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