Double-exposure speckle interferometry is used to measure the degree of spatial coherence from an extended quasi-monochromatic source. The method closely follows the theory of spatial coherence and allows easy interpretation of results; it can be implemented with a compact interferometer based on laser speckle patterns.
© 1992 Optical Society of America
Original Manuscript: January 14, 1992
Published: June 1, 1992
Celso L. Ladera and Manuel A. Bautista, "Measuring the spatial coherence from an extended quasi-monochromatic source by double-exposure speckle interferometry," Opt. Lett. 17, 825-827 (1992)