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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 5 — Mar. 2, 2009
  • pp: 3196–3210

Null test of an off-axis parabolic mirror. I. Configuration with spherical reference wave and flat return surface

Jan Burke, Kai Wang, and Adam Bramble  »View Author Affiliations

Optics Express, Vol. 17, Issue 5, pp. 3196-3210 (2009)

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We demonstrate the precise figure measurement of a one-inch (25.4 mm) diamond-turned 90° off-axis commercial-quality parabolic mirror. The test is carried out with a phase-shifting Fizeau interferometer fitted with a spherical reference surface, auxiliary components and a flat return mirror. We present a detailed and systematic appraisal of the necessary steps for alignment and calibration of the instrument and the alignment of the parabolic mirror. Alignment errors and interferometric sensitivity variations are characterised and corrected, and the results give some insight into the diamond-turning process.

© 2009 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(220.1250) Optical design and fabrication : Aspherics
(110.2650) Imaging systems : Fringe analysis

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: December 12, 2008
Revised Manuscript: January 28, 2009
Manuscript Accepted: February 6, 2009
Published: February 17, 2009

Jan Burke, Kai Wang, and Adam Bramble, "Null test of an off-axis parabolic mirror. I. Configuration with spherical reference wave and flat return surface," Opt. Express 17, 3196-3210 (2009)

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