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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 12 — Apr. 20, 2008
  • pp: 2155–2160

Optimization of multilayer mirrors at 13.4 nm with more than two materials

S. M. Al-Marzoug and R. J.W. Hodgson  »View Author Affiliations


Applied Optics, Vol. 47, Issue 12, pp. 2155-2160 (2008)
http://dx.doi.org/10.1364/AO.47.002155


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Abstract

The design of multilayer mirrors with more than two materials is one of the key technologies for investigating lithography. We study a new procedure for optimizing multilayer mirrors of different combinations of materials at a wavelength of 13.4 nm . By adding Be and C layers in different orders to a Si/Mo stack, we have observed enhancement of the reflectivity and a reduction in the number of layers. The Luus–Jaakola optimization procedure has been implemented for the global optimization of the multilayer mirrors. With this algorithm it is not necessary to specify initially the number of layers present in a given design.

© 2008 Optical Society of America

OCIS Codes
(310.0310) Thin films : Thin films
(340.0340) X-ray optics : X-ray optics

ToC Category:
Thin Films

History
Original Manuscript: March 28, 2007
Revised Manuscript: January 31, 2008
Manuscript Accepted: February 1, 2008
Published: April 18, 2008

Citation
S. M. Al-Marzoug and R. J. Hodgson, "Optimization of multilayer mirrors at 13.4 nm with more than two materials," Appl. Opt. 47, 2155-2160 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-12-2155


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