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Laser heterodyne probing as a method of imaging internal inhomogeneities in optical materials

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Abstract

A method for studying materials phase inhomogeneities by point-to-point three-dimensional heterodyne probing is proposed. The probe is a micrograting, formed by two focused overlapping beams. Imaging of phase inhomogeneities distribution in laser ceramics is demonstrated.

© 2019 The Author(s)

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