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Proceedings Paper

New interferometric method for measuring refractive index distribution in GRIN optical blanks
Author(s): Ludmila A. Gerasimova; A. V. Fedorov
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Paper Abstract

A new interferometric method for control of refractive index distribution in a plane-parallel section cut from a gradient-index (GRIN) lens blank is described. It uses a standard double- pass interferometric scheme modified to provide single passing of the beam through the investigated GRIN sample. The two-dimensional dependence of refractive index in transverse dimensions along the sample surface is measured with the accuracy better than 1 multiplied by 10-4.

Paper Details

Date Published: 6 May 1996
PDF: 8 pages
Proc. SPIE 2799, Atomic and Quantum Optics: High-Precision Measurements, (6 May 1996); doi: 10.1117/12.239869
Show Author Affiliations
Ludmila A. Gerasimova, St. Petersburg Institute of Fine Mechanics and Optics (Russia)
A. V. Fedorov, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 2799:
Atomic and Quantum Optics: High-Precision Measurements
Sergei N. Bagayev; Anatoly S. Chirkin, Editor(s)

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