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Proceedings Paper

Multi-Wavelength Interferometric Testing
Author(s): William Swantner; Charles R. Hayslett
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Paper Abstract

We have built a modified Twyman-Green interferometer illuminated with a krypton laser. The configuration allows for center of curvature or autocollimation testing at various selected wavelengths. Software data reduction uses a Zernike polynomial fit to the wavefront. The interferograms are all made without moving the source, so the effects of axial color, lateral color, and chromatic variation of aberrations will exhibit themselves in a straightforward fashion in terms of the coefficients of the Zernike polynomials. Also, a scheme for using this information in the calculation of a polychromatic optical transfer function (OTF) has been developed. Requirements for the interferometer's optics are examined, and interferometer calibration discussed.

Paper Details

Date Published: 21 November 1977
PDF: 5 pages
Proc. SPIE 0126, Clever Optics: Innovative Applications of Optics, (21 November 1977); doi: 10.1117/12.955897
Show Author Affiliations
William Swantner, US Army White Sands Missile Range (United States)
Charles R. Hayslett, US Army White Sands Missile Range (United States)

Published in SPIE Proceedings Vol. 0126:
Clever Optics: Innovative Applications of Optics
N. Balasubramanian; James C. Wyant, Editor(s)

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