Optical EngineeringOptical correlation diagnostics of random fields and objects
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Interference and polarization-interference methods for measuring amplitude and phase parameters of random optical fields are reviewed and their applications to random field identification and diagnostics of random phase objects are discussed. The use of the correlation dimension of chaos in an optical field as a diagnostic tool is considered. The interference principles employed in parallel processing of large data bulks are shown to increase considerably the processing speed of diagnostic devices. That a proper account of the contribution of the longitudinal field component in the formation of such wave dislocations enables one to gain an insight into the wavefront formation mechanism in the vicinity of a zero amplitudeis also demonstrated.