Realization of double uniform line self-focusing of elliptical Airyprime beams

LETO / LETO-3 Spatial Light Modulators
Beam Shaping / Beam Steering Bessel-/ Airy Beam Generation
Published on:
Authors: Jian He, Jiahao Chen, Yimin Zhou, Fei Wang, Yangjian Cai, and Guoquan Zhou
Abstract:

Double line self-focusing characteristics of elliptical Airyprime beams (EAPBs) with different elliptical vertical-axis factor β are investigated by varying the main ring radius r0. Overly large or small r0 results in the inhomogeneous distribution of light intensity at one linear focus of the double line self-focusing. Only when r0 is appropriate and β is within a certain range, can double uniform line self-focusing happen to the EAPB. Moreover, the self-focusing ability of the second line self-focusing is weaken than that of the first line self-focusing. Under the premise of our selected values of beam parameters, the EAPB can achieve double uniform line self-focusing when r0 = 0.3 mm and β = 0.58∼0.71. The focal length of the first line self-focusing, the lengths of double linear focus, and the self-focusing abilities of the double uniform line self-focusing can be regulated by varying β within the range of 0.58∼0.71. If β is smaller than 0.58 or larger than 0.71, it will lead to nonuniform line self-focusing. An explanation of the physical mechanism behind the double uniform line self-focusing of the EAPB is proposed. Finally, the experimental measurements of the line self-focusing of the EAPB confirm the validity of the above conclusions. This research provides a new solution on how to generate double uniform line self-focusing and new insights into the practical application of elliptical self-focusing beams.

Open Access

Publication: Optics Express
Issue/Year: Opt. Express 32, 14116-14132 (2024)
DOI: 10.1364/OE.520279
Link: https://doi.org/10.1364/OE.520279

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