Abstract
We consider the method for improving the sensitivity of measurements in the formation of aberration-free interference images of wedge plates, which do not require a priori knowledge of the position of the wedge edge. It is shown that the sensitivity in the measurement of the wedge angle in real time interferometry is doubled in the case of recording on the reference hologram of the wedge plate followed by its reconstruction by the object light wave that has passed through the wedge plate rotated through 180° relative to the normal. It turns out that recording of a pair of holograms of the wedge plate, one of which is the image of the wedge plate turned through 180° relative to the normal to the plate, makes it possible to increase the sensitivity of measurements by more than an order of magnitude by eliminating the systematic components of measuring errors due to complete compensation of aberrations. The results of experimental testing of the method are considered.
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Original Russian Text © A.I. But’, A.M. Lyalikov, 2012, published in Zhurnal Tekhnicheskoi Fiziki, 2012, Vol. 82, No. 5, pp. 78–83.
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But’, A.I., Lyalikov, A.M. Improvement of the sensitivity of measurements in the formation of holographic interferograms of wedge plates. Tech. Phys. 57, 657–661 (2012). https://doi.org/10.1134/S1063784212050064
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DOI: https://doi.org/10.1134/S1063784212050064