Investigation on partially coherent vector beams and their propagation and focusing properties

Abstract

The propagation and focusing properties of partially coherent vector beams including radially polarized and azimuthally polarized (AP) beams are theoretically and experimentally investigated. The beam profile of a partially coherent radially or AP beam can be shaped by adjusting the initial spatial coherence length. The dark hollow, flat-topped, and Gaussian beam spots can be obtained, which will be useful in trapping particles. The experimental observations are consistent with the theoretical results.

Controllable Self‐Focusing Circular Vortex Pearcey Gaussian Beam with Low Spatial Coherence

“…Since the well-established theory of optical coherence, [1] partially coherent beams, such as partially coherent vector beams, [2][3][4][5][6][7] partially coherent circular beams, [8,9] and partially coherent dark diffraction beams [10] have been a topic of great interest in optics. Their features have been studied extensively due to the special advantages in particle trapping [11][12][13] and the anti-interference ability in optical communication in free space.…”