Work

Mode conversion of controllable anomalous elliptical hollow beams in strongly nonlocal nonlinear media induced by cross-phase

Year: 2025

Type: article

Abstract: This paper proposes a controllable anomalous elliptical hollow cross-phase (CAEHCP) beam. Based on the Huygens-Fresnel integral principle and the transformation matrix of strong nonlocal nonlinear medium (SNNM), the analytical expression of beam propagation in SNNM is derived. The propagation characteristics of the CAEHCP beam—including intensity, phase, axial intensity, curvature radius, and beam width—are computed and analyzed numerically. Additionally, we examine the impact of the cross-phase on critical power variations. The results indicate that, under certain conditions, the intensity distribution demonstrates symmetry relative to parameter a , enabling the CAEHCP beam to transition into a hollow structure. The cross-phase effect induces periodic changes and rotation in the transverse intensity distribution of the CAEHCP beam. When the beam modulation parameter is a complex number, the intensity distribution exhibits rotational characteristics, with the rotation amplitude gradually increasing as the cross-phase increases. These findings establish a theoretical foundation for potential applications of cross-phase beams in optical communication, light-field control, and related fields.

Source: Optics Express

DOI: 10.1364/oe.561213

Authors: Meng Zhang, Shaohua Zhang, Zhenglan Zhou, Jun Qu

Institution: Huainan Normal University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China