We introduce a class of partially coherent beams with spatially varying correlation properties. It is shown that mathematically simple modifications in the coherence function of conventional Gaussian Schell-model beams lead to partially coherent fields with extraordinary free-space propagation characteristics, such as locally sharpened and laterally shifted intensity maxima. We study the properties of such fields based on an elementary-mode interpretation and by numerical simulations. The results demonstrate the potential of coherence modulation for beam shaping applications.
© 2011 Optical Society of America
Coherence and Statistical Optics
Original Manuscript: August 9, 2011
Manuscript Accepted: September 12, 2011
Published: October 14, 2011
Hanna Lajunen and Toni Saastamoinen, "Propagation characteristics of partially coherent beams with spatially varying correlations," Opt. Lett. 36, 4104-4106 (2011)