Highly efficient blazed grating with multilayer coating for tender X-ray energies
| Autor: | Frederik Bijkerk, Z. S. Wang, Jacobus Marinus Sturm, Ch. Waberski, Thomas Zeschke, I. Rudolph, Grzegorz Gwalt, Robbert Wilhelmus Elisabeth van de Kruijs, Alexei Erko, Frank Siewert, O. Kutz, J. Wolf, Eric Louis, I. Packe, Andrey Sokolov, Franz Schäfers, Stephanie Lemke, F. Senf, M. Mertin, F. Eggenstein, Qiushi Huang |
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| Přispěvatelé: | XUV Optics, Faculty of Science and Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
030103 biophysics Materials science X-ray optics Physics::Optics IR-101932 Photon energy Grating Diffraction efficiency 01 natural sciences law.invention 010309 optics 03 medical and health sciences Optics law 0103 physical sciences Blazed grating METIS-318633 Diffraction grating business.industry Stray light Atomic and Molecular Physics and Optics Photon counting Optoelectronics Inhouse research on structure dynamics and function of matter business |
| Zdroj: | Optics express, 24(12), 13220-13230. The Optical Society |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.24.013220 |
| Popis: | For photon energies of 1 – 5 keV, blazed gratings with multilayer coating are ideally suited for the suppression of stray and higher orders light in grating monochromators. We developed and characterized a blazed 2000 lines/mm grating coated with a 20 period Cr/C- multilayer. The multilayer d-spacing of 7.3 nm has been adapted to the line distance of 500 nm and the blaze angle of 0.84° in order to provide highest efficiency in the photon energy range between 1.5 keV and 3 keV. Efficiency of the multilayer grating as well as the reflectance of a witness multilayer which were coated simultaneously have been measured. An efficiency of 35% was measured at 2 keV while a maximum efficiency of 55% was achieved at 4 keV. In addition, a strong suppression of higher orders was observed which makes blazed multilayer gratings a favorable dispersing element also for the low X-ray energy range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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