Phase distortion of a probe beam transmitting through a transparent medium bulk

A highly feasible full-field phase-measuring methodology has been developed to investigate the phase distortions of a probe beam transmitting through a LiB3O5 (LBO) crystal under different conditions. The results show that wavefront phase exhibits inhomogeneous distribution when the crystal is heated and the phase difference becomes small as time goes by when the heating temperature is kept unchanged. The technique provides an easy and feasible way to accurately measure the phase images of a probe beam transmitting through a crystal. The procedure provided in this report can be also used to study the rapid phase changes that take place in other types of optical materials.

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