Partially Coherent Dual Nonparaxial Accelerating Beams

Abstract

Partially coherent dual nonparaxial accelerating beams are constructed from the perspective of a superposition of fully coherent modes and incoherent interference effects among these modes. It is found that divergence angle and partial coherence of such beams can be altered by a curvature parameter. At the beginning of the propagation, such beams focus in the case of constructive interference, but they leave a central dip in the destructive case. Additionally, the extension of a crossed‐shaped intensity distribution caused by interference is slower than that of the transverse beam frame evidently. In particular, moving along the nonparaxial accelerating trajectory on the micrometer scale, the main lobes of these beams can diverge to a nearly flat angle. As such, these beams are likely to have applications in microscopic particle manipulation and coherence image processing.

Nonparaxial Focusing of Partially Coherent Gaussian Schell-Model and Bessel-Correlated Beams in Free Space

“…Future research can be related to the consideration of focusing partially coherent and partially polarized vector beams [45]. Of practical interest is the consideration of structured vortex beams with spin angular momentum (SAM) and orbital angular momentum (OAM) [46][47][48], partially coherent accelerating beams [49], beams possessing self-healing abilities in a turbulent media [50], and spatiotemporal optical vortex beams [51].…”