Experimental evidence of the spatial coherence moiré and the filtering of classes of radiator pairs.
Evidence of the physical existence of the spatial coherence moiré is obtained by confronting numerical results with experimental results of spatially partial interference. Although it was performed for two particular cases, the results reveal a general behavior of the optical fields in any state of spatial coherence. Moreover, the study of the spatial coherence moiré deals with a new type of filtering, named filtering of classes of radiator pairs, which allows changing the power spectrum at the observation plane by modulating the complex degree of spatial coherence, without altering the power distribution at the aperture plane or introducing conventional spatial filters. This new procedure can optimize some technological applications of actual interest, as the beam shaping for instance.
Physics School, Universidad Nacional de Colombia Sede Medellín, A.A. 3840, Medellín, Colombia.
Roman
R
Castaneda
Mario
M
Usuga-Castaneda
Jorge
J
Herrera-Ramírez