Scintillation of nonuniformly correlated beams in atmospheric turbulence

Abstract

We investigated the scintillation properties of nonuniformly correlated (NUC) beams in atmospheric turbulence and have shown that NUC beams can not only have lower scintillation but also higher intensity than Gaussian-Schell model beams and even higher intensity than coherent Gaussian beams over certain propagation distances.

Experimental generation of cosine-Gaussian-correlated Schell-model beams with rectangular symmetry

“…Since the sufficient condition for devising a genuine correlation function of a scalar or electromagnetic partially coherent beam was established by Gori and collaborators [3,4], a wide variety of partially coherent sources and beams became known, such as beams with locally varying spatial coherence [5], a nonuniformly correlated (NUC) beam [6][7][8][9], multi-Gaussian Schellmodel (MGSM) beam [10][11][12][13], cosine-Gaussian Schellmodel (CGSM) beam [14,15], Bessel-Gaussian (BGSM) and Laguerre-Gaussian Schell-model (LGSM) beam [16,17], and a special correlated partially coherent vector beam [18]. All these beams exhibit interesting features.…”

“…All these beams exhibit interesting features. The NUC beam displays a self-focusing effect and a lateral shift of the intensity maximum on propagation [6][7][8][9]. The MGSM beam displays a far-field flat-topped beam profile [10][11][12][13].…”

Correlation-induced self-focusing and self-shaping effect of a partially coherent beam

“…The evolution properties of the scintillation of an NCPC beam in atmospheric turbulence was illustrated in Ref. [20], and it was found that an NCPC beam can not only have lower scintillation but also higher intensity than a conventional Gaussian-Schell-model (GSM) beam, and it will be useful for long-distance free-space optical communications. Recently, the scalar NCPC beam was extended to the electromagnetic case [21] and the statistical properties of such beam in turbulent atmosphere were also investigated [22] .…”

Effect of the atmospheric turbulence on a special correlated radially polarized beam on propagation

“…Gu and Gbur investigated the NUC beam in atmosphere and found it to have superior scintillation characteristics [35]. The scintillations of multi-Gaussian Schell-model (MGSM) beams were investigated by Yuan et al theoretically [36] and Korotkova et al experimentally [37], and also found to have reduced scintillation.…”