Physics – Optics
Scientific paper
Jun 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apopt..35.2997g&link_type=abstract
Applied Optics, Volume 35, Issue 16, June 1, 1996, pp.2997-3001
Physics
Optics
3
Gradient-Index Lenses, Imaging Systems, Instrumentation: Measurement: And Metrology, Interferometry, Materials, Nondestructive Testing, Optical Design And Fabrication, Optical Properties Of Materials, Optical Testing, Refraction, Refractive Index
Scientific paper
A new interferometric method for measuring the refractive-index distribution in a plane-parallel section cut from a gradient-index lens blank is described. A standard double-pass interferometric scheme modified to provide a single pass of the beam through the investigated gradient-index sample is used. The two-dimensional variation of the refractive index in dimensions transverse to the sample surface is measured with an accuracy of better than 1 \times 10-4. interferometry, nondestructive testing, refractometry, optical properties, index of refraction.
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