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MEASUREMENT OF THE DIAMETER VARIATION AND REFRACTIVE INDEX INHOMOGENEITY OF A FUSED SILICA SPHERE USING FOURSURFACE PHASE-SHIFTING INTERFEROMETRY

C.-S. Kang, U. Griesmann, J. A. Soons
  • Abstract:
    The diameter variation and refractive index inhomogeneity of a fused silica sphere were measured with a frequency-shifting Fizeau interferometer in a four-surface configuration. The phase-shifting algorithms to analyze the interference signals for each basic cavity were designed using the characteristic polynomial theory. We describe the experimental setup and preliminary results.
  • Keywords:
    phase-shifting interferometry, characteristic polynomial, sphere measurement, diameter variation, refractive index inhomogeneity
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  • DOI:
    _unreg_wc-2012.TC14-O9

Event details:

  • IMEKO TC:
  • Event name:
    XX IMEKO World Congress
  • Title:

    Metrology for Green Growth

  • Place:
    Busan, REPUBLIC of KOREA
  • Time:
    09 September 2012 - 12 September 2012