We analyze the coherence properties of a partially coherent optical field emerging from two pinholes in a plane opaque screen. We show that at certain pairs of points in the region of superposition the light is fully coherent, regardless of the state of coherence of the light at the pinholes. In particular, this result also holds if each pinhole is illuminated by a different laser.
© 2003 Optical Society of America
Hugo F. Schouten, Taco D. Visser, and Emil Wolf, "New effects in Young’s interference experiment with partially coherent light," Opt. Lett. 28, 1182-1184 (2003)