Optical Criterion Of The Selection Of Material Pairs For High-Reflectance Soft X-Ray Multilayers

Masaki Yamamoto; Jianlin Cao; Takeshi Namioka

doi:10.1117/12.961862

27 November 1989 Optical Criterion Of The Selection Of Material Pairs For High-Reflectance Soft X-Ray Multilayers

Masaki Yamamoto, Jianlin Cao, Takeshi Namioka

Proceedings Volume 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation; (1989) https://doi.org/10.1117/12.961862
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

We have investigated, in a complex plane, the behavior of the Berning's formula for the complex amplitude reflectance of a multilayer to find a theoretical basis for the selection of a proper material pair needed to produce a high-reflectance soft X-ray multilayer. An optical criterion has been derived for the selection of such a pair. The criterion is that in a complex plane the Fresnel reflection coefficients of two materials with respect to vacuum should lie close to the real axis and should be far apart from each other. Some examples are given to illustrate the usefulness of this criterion in the design of multilayers.

Citation Download Citation

Masaki Yamamoto, Jianlin Cao, and Takeshi Namioka "Optical Criterion Of The Selection Of Material Pairs For High-Reflectance Soft X-Ray Multilayers", Proc. SPIE 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation, (27 November 1989); https://doi.org/10.1117/12.961862

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