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Why is it necessary than the object beam and reference beam in holography are highly coherent?

on 2012-12-05 21:10:39   by Shatanik   on Civil Engineering  1 answers

Aritra

on 2012-12-06 10:30:00  

during the image recording of holography, to get the 3-d nature of the object it is necessary that the object beam and reference beam interfere with each other. And, for interference, coherence is a must requirement...