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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 18 — Sep. 9, 2013
  • pp: 20730–20737

Inhomogeneity measurement at oblique incidence by phase measuring interferometers

Luan Zhu  »View Author Affiliations


Optics Express, Vol. 21, Issue 18, pp. 20730-20737 (2013)
http://dx.doi.org/10.1364/OE.21.020730


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Abstract

The huge power solid-state lasers require large optical materials with high quality. The inhomogeneity must be required to be measured. Inhomogeneity measurement is often done at normal incidence by interferometer, while the size of large blanks is limited to the interferometer aperture. A five-step method to measure refractive index inhomogeneity over the interferometer aperture is proposed in this paper. The variation of the refractive index inhomogeneity of the glass blank is directly calculated using five interferograms measured at oblique incidence. The high repeatability of the results is given. The reliability of the method is further verified by comparing the same part measured at normal incidence.

© 2013 OSA

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4630) Instrumentation, measurement, and metrology : Optical inspection

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: June 3, 2013
Revised Manuscript: August 12, 2013
Manuscript Accepted: August 20, 2013
Published: August 28, 2013

Citation
Luan Zhu, "Inhomogeneity measurement at oblique incidence by phase measuring interferometers," Opt. Express 21, 20730-20737 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-18-20730


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