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Infrared Computer-Generated Holograms: Design and Application for the WFIRST Grism Using Wavelength-Tuning InterferometryInterferometers using computer-generated holograms (CGHs) have become the industry standard to accurately measure aspheric optics. The CGH is a diffractive optical element that can create a phase or amplitude distribution and can be manufactured with low uncertainty using modern lithographic techniques. However, these CGHs have conventionally been used with visible light and piezo-shifting interferometers. Testing the performance of transmissive optics in the infrared requires infrared CGHs and an infrared interferometer. Such an instrument is used in this investigation, which introduces its phase shift via wavelength-tuning. A procedure on how to design and manufacture infrared CGHs and how these were successfully used to model and measure the Wide-Field Infrared Survey Telescope grism elements is provided. Additionally, the paper provides a parametric model, simulation results, and calculations of the errors and measurements that come about when interferometers introduce a phase variation via wavelength-tuning interferometry to measure precision aspheres.
Document ID
20190001898
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Dominguez, Margaret Z.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Marx, Catherine T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gong, Qian
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hagopian, John G.
(Applied Technology Associates (ATA) Aerospace Albuquerque, NM, United States)
Griesmann, Ulf
(National Inst. of Standards and Technology (NIST) Gaithersburg, MD, United States)
Burge, James H.
(Arizona Univ. Tucson, AZ, United States)
Kim, Dae Wook
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
March 26, 2019
Publication Date
July 14, 2018
Publication Information
Publication: Optical Engineering
Publisher: SPEI
Volume: 57
Issue: 7
ISSN: 0091-3286
e-ISSN: 1560-2303
Subject Category
Optics
Report/Patent Number
GSFC-E-DAA-TN66351
Report Number: GSFC-E-DAA-TN66351
ISSN: 0091-3286
E-ISSN: 1560-2303
Funding Number(s)
CONTRACT_GRANT: NNG15CR64C
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Keywords
Communication
Spaceborne Telescopes
Engineering
Physics
Slitless spectrometer
Space Sciences
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