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Propagation-invariant vortex Airy beam whose singular point follows its main lobe

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Title: Propagation-invariant vortex Airy beam whose singular point follows its main lobe
Authors: Suzuki, Masato Browse this author
Yamane, Keisaku Browse this author →KAKEN DB
Omatsu, Takashige Browse this author
Morita, Ryuji Browse this author →KAKEN DB
Keywords: optical vortex
orbital angular momentum
Airy beams
Issue Date: Nov-2021
Publisher: IOP Publishing
Journal Title: New Journal of Physics
Volume: 23
Issue: 11
Start Page: 113043
Publisher DOI: 10.1088/1367-2630/ac37af
Abstract: We propose and demonstrate a novel vortex Airy beam which is a superposition of an Airy beam and its laterally sheared beam with a pi/2 phase shift. This new-type of vortex Airy beam exhibits stable propagation dynamics, wherein its singular point closely follows its main lobe, unlike conventional vortex Airy beams. Notably, the orbital angular mode purity of this new vortex Airy beam is up to 10% better than that of a conventional vortex Airy beam. We anticipate that this new type of vortex Airy beam, which combines the characteristics of an optical vortex and a diffraction-free Airy beam, will facilitate new directions in applications such as microscopy, material processing and nonlinear optics.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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