Abstract

The coherence area is measured in a simple Young’s experiment using parametric downconversion light produced in a nonlinear crystal (LiIO3) pumped by a continuous argon-ion laser. The normalized mutual intensity or degree of coherence is obtained from the intensity distribution interference patterns and compared with a standard theory in which the light source behaves as a surface with infinitesimal uncorrelated emitters.

© 1994 Optical Society of America

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