Conference proceeding
Diffraction efficiency of radially-profiled off-plane reflection gratings
Proceedings of SPIE - The International Society for Optical Engineering, Vol.9603, pp.960316-960316-8
09/04/2015
DOI: 10.1117/12.2186842
Abstract
Future X-ray missions will require gratings with high throughput and high spectral resolution. Blazed off-plane reflection gratings are capable of meeting these demands. A blazed grating profile optimizes grating efficiency, providing higher throughput to one side of zero-order on the arc of diffraction. This paper presents efficiency measurements made in the 0.3 – 1.5 keV energy band at the Physikalisch-Technische Bundesanstalt (PTB) BESSY II facility for three holographically-ruled gratings, two of which are blazed. Each blazed grating was tested in both the Littrow configuration and anti-Littrow configuration in order to test the alignment sensitivity of these gratings with regard to throughput. This paper outlines the procedure of the grating experiment performed at BESSY II and discuss the resulting efficiency measurements across various energies. Experimental results are generally consistent with theory and demonstrate that the blaze does increase throughput to one side of zero-order. However, the total efficiency of the non-blazed, sinusoidal grating is greater than that of the blazed gratings, which suggests that the method of manufacturing these blazed profiles fails to produce facets with the desired level of precision. Finally, evidence of a successful blaze implementation from first diffraction results of prototype blazed gratings produce via a new fabrication technique at the University of Iowa are presented.
Details
- Title: Subtitle
- Diffraction efficiency of radially-profiled off-plane reflection gratings
- Creators
- Drew M Miles - University of IowaJames H Tutt - University of IowaCasey T DeRoo - University of IowaHannah Marlowe - University of IowaThomas J Peterson - University of IowaRandall L McEntaffer - University of IowaBenedikt Menz - Max Planck SocietyVadim Burwitz - Max Planck SocietyGisela Hartner - Max Planck SocietyChristian Laubis - Physikalisch-Technische BundesanstaltFrank Scholze - Physikalisch-Technische Bundesanstalt
- Contributors
- Stephen L O'Dell (Editor) - NASA Marshall Space Flight Ctr. (United States)Giovanni Pareschi (Editor) - INAF - Osservatorio Astronomico di Brera (Italy)
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of SPIE - The International Society for Optical Engineering, Vol.9603, pp.960316-960316-8
- Publisher
- SPIE
- DOI
- 10.1117/12.2186842
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Language
- English
- Date published
- 09/04/2015
- Academic Unit
- University College Courses; Physics and Astronomy
- Record Identifier
- 9984199712602771
Metrics
1 Record Views