Paper
12 July 1994 Nonscalar properties of high groove frequency gratings for soft x-ray and XUV regions
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Abstract
It was found that grating efficiency in short spectral range has unpredictable changes both under the alterations in groove geometry, groove frequency, angle of incidence and wavelength; and under replacement of reflectance, i.e. under the use of another coating material with the stand point of scalar theory. As is shown, this non-scalar effect becomes greatly apparent only for high-frequency gratings (up to 3600 g/mm) and includes two aspects. They are: (1) it is impossible to predict grating efficiency under the changing of coating material (without changes of all the other parameters) by multiplication on the ratio of coating material Fresnel reflectance; (2) optimum parameters (angle of incidence, groove depth, groove width for lamellar grating) found for one kind of coating material are not optimum for another.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Leonid I. Goray "Nonscalar properties of high groove frequency gratings for soft x-ray and XUV regions", Proc. SPIE 2278, X-Ray and UV Detectors, (12 July 1994); https://doi.org/10.1117/12.180012
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KEYWORDS
Diffraction gratings

Coating

Refractive index

Gold

X-rays

Diffraction

Extreme ultraviolet

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