We describe the anomalous behavior of the spectral degree of coherence as a function of light frequency in the vicinity of phase singularities of partially spatially coherent, polychromatic wave fields. We distinguish the discovered spectral coherence anomalies from conventional spectral anomalies realized with fully spatially coherent optical fields. We also demonstrate how the previously reported spectral anomalies can be engineered in partially spatially coherent fields.
© 2013 Optical Society of America
Coherence and Statistical Optics
Original Manuscript: April 30, 2013
Revised Manuscript: June 5, 2013
Manuscript Accepted: June 18, 2013
Published: July 12, 2013
Luyu Wang, Sergey A. Ponomarenko, and Zhizhang (David) Chen, "Spectral coherence anomalies," Opt. Lett. 38, 2557-2559 (2013)