Abstract
This paper reports the development of an interferometric technique for studying the
dynamics of the appearance and relaxation of the refractive-index variation of optical glasses,
produced when intense light acts on them. The technique is based on the use of a cyclic
shearing interferometer. The rationale for choosing this type of interferometer is given, and
its basic characteristics are presented. The solution obtained in this paper for the problem
of reconstructing the wavefront deformations caused by the action of light on the test objects
is explained. Results are presented for the use of the technique to study photoinduced
refractive-index variations in cerium-doped optical glasses. The mechanisms of the observed
effects are discussed.
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