Abstract
The spatial coherence and the propagation property of a laser beam propagating through several optical components were studied experimentally. A measurement of the Wigner distribution function of a laser beam at a single plane was shown to yield the total degree of coherence, the beam quality parameter, and both near-field and far-field information on the propagating beam. A more complete characterization of the laser beam could be achieved by applying a he fine details of the property of coherence can be understood from the characteristics of the dominantly contributing eigenmodes.
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