In their paper 'Lens-free holographic imaging for on-chip cytometry and diagnostics', the team described how, by controlling the spatial coherence
of the illumination source, they recorded a 2D holographic diffraction pattern of each cell or micro-particle on a chip using a high resolution sensor array that has 2 [micro]m pixel size.
The study titled, "On the Spatial Coherence
of Magnetic Ejecta: Measurements of Coronal Mass Ejections by Multiple Spacecraft Longitudinally Separated by 0.01 au," was published Aug. 30 in the Astrophysical Journal Letters.
The spectral clustering results are used to estimate atmospheric light A first and then establish the spatial coherence
A spatial coherence
function can be obtained from two-frequency mutual coherence function (53), (59)-(60) by setting the frequency separation X to zero:
The use of light sources with partial spatial coherence
is shown to image a biological specimen and static and dynamic colloidal systems.
This is an important issue for post-communist EU countries with respect to the spatial coherence
of EU cohesion policy and national regional policies.
The QPS approach is introducing interferogram weighting based on overall spatial coherence
. This way a linear deformation trend can be satisfactorily evaluated also in areas coherent only within a limited number of input interferograms.
To regain some sort of spatial coherence
, maps needed to assume an imaginary bird's eye perspective that was alien to life as it was lived on the ground.
The author has organized the main body of his text in nine chapters devoted to random variables, random processes, first-order properties of light, the temporal and spatial coherence
of optical waves, problems involving higher-order coherence, the effects of partial coherence in imaging systems, and a variety of other related subjects.
The experimental setup for generating the GSM vortex beam, measuring its spatial coherence
length and scintillation index is shown in Figure 2 .