A new technique for modifying the coherence of a light field is described theoretically, and experimental confirmation is presented. A hologram of a coherently illuminated spatially random diffuser and a reference plane wave is recorded. When the processed hologram is placed back into position and the diffuser is illuminated by partially coherent light, the coherent reference plane wave is reconstructed by the hologram. Thus this optical system can be used to separate a coherent component from partially coherent illumination.
© 1981 Optical Society of America
D. Courjon, J. Bulabois, and W. H. Carter, "Use of a holographic filter to modify the coherence of a light field," J. Opt. Soc. Am. 71, 469-473 (1981)