Determining ideal grating parameters for UV blazed gratings

Jared A.B. Termini, Keri Hoadley, Casey DeRoo, Cecilia Fasano, Erika Hamden, Jessica Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Ultraviolet (UV, 900−2000 Å) spectroscopy simultaneously traces the most common elements (e.g., H, He, O, C, N) in many phases, in the form of ionic, atomic, and molecular lines. UV grating spectrometers hence offer unique insights into astrophysical systems and the impacts of their evolution. This work seeks to understand how we might best optimize certain grating designs for targeted astrophysical tracers. Our work is intended to guide proposers in determining the ideal grating parameters given their specific science objectives. We report on the results of the initial phase of the project, a thorough design phase to determine the ideal grating parameters and electron-beam lithography/potassium hydroxide patterning prescriptions for blazed UV gratings. We use grating simulation software to explore a grating-parameter space and determine the key performance expectations for gratings in next-generation UV space instruments. We present our results for a rough grid in grating-parameter space (blaze angle: ∼30°−76°, grating period: 100−5000 nm). Future work will explore specific cases that include the nominal grating prescriptions for current (e.g., Hyperion, PolStar, LUVOIR) and future mission designs.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2022
Subtitle of host publicationUltraviolet to Gamma Ray
EditorsJan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa
PublisherSPIE
ISBN (Electronic)9781510653436
DOIs
StatePublished - 2022
EventSpace Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray - Montreal, United States
Duration: Jul 17 2022Jul 22 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12181
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSpace Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray
Country/TerritoryUnited States
CityMontreal
Period7/17/227/22/22

Keywords

  • blazed
  • gratings
  • instrumentation
  • laminar
  • PCGrate
  • ultraviolet
  • UV

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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