Line spread functions of blazed off-plane gratings operated in the Littrow mounting

W2299239725 · 수집 2026-10-04 18:12:24

T11338 Advancements in Photolithography Techniques

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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.

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PDF 본문 자동 추출 실패: [download] not a PDF (Content-Type: text/html, final URL: https://www.spiedigitallibrary.org/journals/Journal-of-Astronomical-Telescopes-Instruments-and-Systems/volume-2/issue-2/025001/Line-spread-functions-of-blazed-off-plane-gratings-operated-in/10.1117/1.JATIS.2.2.025001.pdf) (2026-10-05 01:18:24)

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