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DataRay Inc. - ISO 11146-Compliant Laser Beam Profilers
Photonics Dictionary

mutual coherent function

A function that quantifies the performance degradation of coherent communications systems, imaging systems and all systems that rely on the spot size of a laser beam that has propagated along an atmosphere path; physically, the cross-sectional function of the optical fields that are separated by a distance in a plane that is normal to the direction of propagation.
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