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25 April 2016 Line spread functions of blazed off-plane gratings operated in the Littrow mounting
Casey T. DeRoo, Randall L. McEntaffer, Drew M. Miles, Thomas J. Peterson, Hannah R. Marlowe, James H. Tutt, Benjamin D. Donovan, Benedikt Menz, Vadim Burwitz, Gisela Hartner, Ryan Allured, Randall K. Smith, Ramses Günther, Alex Yanson, Giuseppe Vacanti, Marcelo Ackermann
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Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 2, Issue 2, 025001 (April 2016). https://doi.org/10.1117/1.JATIS.2.2.025001
Abstract
Future soft x-ray (10 to 50 Å) spectroscopy missions require higher effective areas and resolutions to perform critical science that cannot be done by instruments on current missions. An x-ray grating spectrometer employing off-plane reflection gratings would be capable of meeting these performance criteria. Off-plane gratings with blazed groove facets operating in the Littrow mounting can be used to achieve excellent throughput into orders achieving high resolutions. We have fabricated two off-plane gratings with blazed groove profiles via a technique that uses commonly available microfabrication processes, is easily scaled for mass production, and yields gratings customized for a given mission architecture. Both fabricated gratings were tested in the Littrow mounting at the Max Planck Institute for Extraterrestrial Physics (MPE) PANTER x-ray test facility to assess their performance. The line spread functions of diffracted orders were measured, and a maximum resolution of 800±20 is reported. In addition, we also observe evidence of a blaze effect from measurements of relative efficiencies of the diffracted orders.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Casey T. DeRoo, Randall L. McEntaffer, Drew M. Miles, Thomas J. Peterson, Hannah R. Marlowe, James H. Tutt, Benjamin D. Donovan, Benedikt Menz, Vadim Burwitz, Gisela Hartner, Ryan Allured, Randall K. Smith, Ramses Günther, Alex Yanson, Giuseppe Vacanti, and Marcelo Ackermann "Line spread functions of blazed off-plane gratings operated in the Littrow mounting," Journal of Astronomical Telescopes, Instruments, and Systems 2(2), 025001 (25 April 2016). https://doi.org/10.1117/1.JATIS.2.2.025001
Published: 25 April 2016
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Cited by 11 scholarly publications and 2 patents.
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KEYWORDS
Diffraction gratings
Magnesium
X-rays
Diffraction
Silicon
Spectroscopy
Sensors
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