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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 6 — Mar. 15, 2008
  • pp: 560–562

Spectral-purity-enhancing layer for multilayer mirrors

M. M. J. W. van Herpen, R. W. E. van de Kruijs, D. J. W. Klunder, E. Louis, A. E. Yakshin, S. Alonso van der Westen, F. Bijkerk, and V. Banine  »View Author Affiliations


Optics Letters, Vol. 33, Issue 6, pp. 560-562 (2008)
http://dx.doi.org/10.1364/OL.33.000560


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Abstract

We demonstrate, both theoretically and experimentally, that special spectral-purity-enhancing multilayer mirror systems can be designed and fabricated to substantially reduce the level of out-of-band radiation expected in an extreme ultraviolet lithographic tool. A first proof of principle of applying such spectral-purity-enhancement layers showed reduced out-of-band reflectance by a factor of five, while the in-band reflectance is only 4.5% (absolute) less than for a standard capped multilayer.

© 2008 Optical Society of America

OCIS Codes
(310.1210) Thin films : Antireflection coatings
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.2460) Other areas of optics : Filters, interference
(310.4165) Thin films : Multilayer design

ToC Category:
X-ray Optics

History
Original Manuscript: November 7, 2007
Revised Manuscript: January 29, 2008
Manuscript Accepted: January 30, 2008
Published: March 11, 2008

Citation
M. M. J. W. van Herpen, R. W. E. van de Kruijs, D. J. W. Klunder, E. Louis, A. E. Yakshin, S. Alonso van der Westen, F. Bijkerk, and V. Banine, "Spectral-purity-enhancing layer for multilayer mirrors," Opt. Lett. 33, 560-562 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-6-560

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