Paper
1 February 1991 Performance of multilayer-coated figured optics for soft x-rays near the diffraction limit
Eric L. Raab, Donald M. Tennant, Warren K. Waskiewicz, Alastair A. MacDowell, Richard R. Freeman
Author Affiliations +
Abstract
The imaging performance of a spherical mirror was measured at 14nm. A Foucault knife-edge test was used to determine the focal spot size formed by a 400 mm radius mirror at a numerical aperture of 0.04. The image formed by the mirror is compared with a single-layer AuPd coating is compared with that formed when coated with a Mo/Si multilayer. By fitting the results with a diffraction model, it is possible to quantify the change in effective surface figure caused by the multilayer. It is concluded that a multilayer-coated mirror can perform at the diffraction limit under certain conditions.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eric L. Raab, Donald M. Tennant, Warren K. Waskiewicz, Alastair A. MacDowell, and Richard R. Freeman "Performance of multilayer-coated figured optics for soft x-rays near the diffraction limit", Proc. SPIE 1343, X-Ray/EUV Optics for Astronomy, Microscopy, Polarimetry, and Projection Lithography, (1 February 1991); https://doi.org/10.1117/12.23183
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KEYWORDS
Mirrors

Multilayers

Coating

X-ray optics

Diffraction

X-rays

Imaging systems

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