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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 4 — Feb. 1, 2014
  • pp: A88–A95

Design and realization of advanced multi-index systems

Hans Becker, Diana Tonova, Michael Sundermann, Henrik Ehlers, Stefan Günster, and Detlev Ristau  »View Author Affiliations

Applied Optics, Vol. 53, Issue 4, pp. A88-A95 (2014)

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Practically all thin film systems for normal incidence can be realized using only two-layer materials. But for oblique incidence, polarization effects occur, designs may become complex, and polarization control is difficult or impossible to achieve. Here multi-index or gradient designs offer additional degrees of freedom, and can simplify or even enable challenging designs. Such gradient thin film stacks can be designed ab initio without any start or index profile approximations using a new design software developed by Carl Zeiss. With this software, a rugate omnidirectional AR coating was calculated and transferred to three different multi-index systems. All three examples were realized using ion beam sputter technology, and characterized at Laser Zentrum Hannover. Here we present comparative measurements of the optical performance together with femtosecond laser-induced damage threshold measurements.

© 2013 Optical Society of America

OCIS Codes
(310.1620) Thin films : Interference coatings
(310.1860) Thin films : Deposition and fabrication

Original Manuscript: September 6, 2013
Revised Manuscript: October 16, 2013
Manuscript Accepted: October 23, 2013
Published: November 19, 2013

Hans Becker, Diana Tonova, Michael Sundermann, Henrik Ehlers, Stefan Günster, and Detlev Ristau, "Design and realization of advanced multi-index systems," Appl. Opt. 53, A88-A95 (2014)

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  1. S. W. Anzengruber, E. Klann, R. Ramlau, and D. Tonova, “Numerical methods for the design of gradient-index optical coatings,” Appl. Opt. 51, 8277–8295 (2012). [CrossRef]
  2. D. Ristau, “Ion beam sputtering—state of the art and industrial application,” in Proceedings of the 8th International Conference on Coatings on Glass and Plastics, 2010, pp. 203–208.
  3. M. Lappschies, B. Görtz, and D. Ristau, “Optical monitoring of rugate filters,” Proc. SPIE 5963, 59631Z (2005). [CrossRef]
  4. C. J. Stolz and D. Ristau, “Thin film femtosecond laser damage competition,” Proc. SPIE 7504, 75040S (2009). [CrossRef]

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