Multi-Wavelength Interferometric Testing

William Swantner; Charles R. Hayslett

doi:10.1117/12.955897

21 November 1977 Multi-Wavelength Interferometric Testing

William Swantner, Charles R. Hayslett

Proceedings Volume 0126, Clever Optics: Innovative Applications of Optics; (1977) https://doi.org/10.1117/12.955897
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

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.

Citation Download Citation

William Swantner and Charles R. Hayslett "Multi-Wavelength Interferometric Testing", Proc. SPIE 0126, Clever Optics: Innovative Applications of Optics, (21 November 1977); https://doi.org/10.1117/12.955897

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