Infrared computer-generated holograms: design and application for the WFIRST grism using wavelength-tuning interferometry

Margaret Z. Dominguez; Catherine T. Marx; Qian Gong; John G. Hagopian; Ulf Griesmann; James H. Burge; Dae Wook Kim

doi:10.1117/1.OE.57.7.074105

14 July 2018 Infrared computer-generated holograms: design and application for the WFIRST grism using wavelength-tuning interferometry

Margaret Z. Dominguez, Catherine T. Marx, Qian Gong, John G. Hagopian, Ulf Griesmann, James H. Burge, Dae Wook Kim

Author Affiliations +

Optical Engineering, Vol. 57, Issue 7, 074105 (July 2018). https://doi.org/10.1117/1.OE.57.7.074105

Abstract

Interferometers 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.

Citation Download Citation

Margaret Z. Dominguez, Catherine T. Marx, Qian Gong, John G. Hagopian, Ulf Griesmann, James H. Burge, and Dae Wook Kim "Infrared computer-generated holograms: design and application for the WFIRST grism using wavelength-tuning interferometry," Optical Engineering 57(7), 074105 (14 July 2018). https://doi.org/10.1117/1.OE.57.7.074105

Received: 29 April 2018; Accepted: 26 June 2018; Published: 14 July 2018

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