The spatial coherence guarantees a uniform wavefront prior to beam splitting.
Even in this case, spatial coherence and normal incidence would still be required.
The spatial coherence in in-line scheme is defined by the size of the electron source.
More precisely, the spatial coherence is the cross-correlation between two points in a wave for all times.
Sometimes people also use "spatial coherence" to refer to the visibility when a wave-like state is combined with a spatially shifted copy of itself.
This was a bit disappointing, because spatial coherence is required to make light focus to a small spot-there goes any microscopy applications.
This was to study spatial coherences of the small scale ocean structure.
Keeping some rare sort of spatial coherence, the plume began to migrate upward and over.
Lasers are employed in applications where light of the required spatial or temporal coherence could not be produced using simpler technologies.
The emitted radiation, based on amplified spontaneous emission, has relatively low spatial coherence.