4. Laser and optical interferometry

S.S. Anufrik, A.I. But’, I.A. Lyavshuk, A.M. lyalikov, A.N. Ploschenko
Yanka Kupala State University of Grodno, Belarus

Elimination of variable aberrations in interferometer for dynamics visualization of thermal fields

The possibility is considered of increasing the degree of compensation of residual aberrations in holographic long lateral shear interferometry by using several reference patterns recorded at different lateral shear lengths. This aberration compensation technique was used to visualize distributions of refractive index variations in glass samples of different sizes and shapes that appear as a result of a thermal action on them.
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