A new technique of optical interferometry based on the statistics of the fully
developed speckle field is proposed. It is revealed that the complete randomness
of the speckle phase can play the role of a standard phase in a statistical
sense, and the phase of the object under testing can be derived in a statistical
way, in contrast to conventional interferometry. The technique is first
described in relation to the phase-shifting interferometry and the compensation
problem for the phase-shift error. Next the method is generalized as an
independent interferometric technique.
© 1991 Optical Society of America
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