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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 9 — Mar. 20, 2013
  • pp: 1897–1912

Interferometric homogeneity test using adaptive frequency comb illumination

Klaus Mantel and Johannes Schwider  »View Author Affiliations

Applied Optics, Vol. 52, Issue 9, pp. 1897-1912 (2013)

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The homogeneity test of glass plates in a Fizeau interferometer requires the measurement of the glass sample in reflected as well as in transmitted light. For the measurement in transmitted light, the sample has to be inserted into the ray path of a Fizeau or Twyman–Green interferometer, which leads to a nested cavity setup. To separate the interference signals from the different cavities, we illuminate a Fizeau interferometer with an adaptive frequency comb. In this way, rigid glass plates can be measured, and linear variations in the homogeneity can also be detected. The adaptive frequency comb is provided by a variable Fabry–Perot filter under broadband illumination from a superluminescence diode. Compared to approaches using a two-beam interferometer as a filter for the broadband light source, the visibility of the fringe system is considerably higher.

© 2013 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: December 20, 2012
Manuscript Accepted: February 7, 2013
Published: March 14, 2013

Klaus Mantel and Johannes Schwider, "Interferometric homogeneity test using adaptive frequency comb illumination," Appl. Opt. 52, 1897-1912 (2013)

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