Propagation properties and radiation forces of the Hermite–Gaussian vortex beam in a medium with a parabolic refractive index

In this paper, an analytical expression with a triple sum of the Hermite–Gaussian vortex beam (HGVB) propagating in a medium with a parabolic transverse spatial distribution of the refractive index is carried out. The intensity, phase, Poynting vector, and angular momentum of the HGVB are demonstrat...

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Bibliographic Details
Published in:Applied optics (2004) 2020-09, Vol.59 (27), p.8342
Main Authors: Wu, You, Wu, Jinhong, Lin, Zejia, Fu, Xinming, Qiu, Huixin, Chen, Kaihui, Deng, Dongmei
Format: Article
Language:English
Subjects:
Angular momentum
Electron beams
Gaussian beams (optics)
Optical properties
Optical trapping
Propagation
Refractivity
Spatial distribution
Vortices
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Summary:In this paper, an analytical expression with a triple sum of the Hermite–Gaussian vortex beam (HGVB) propagating in a medium with a parabolic transverse spatial distribution of the refractive index is carried out. The intensity, phase, Poynting vector, and angular momentum of the HGVB are demonstrated analytically. The parabolic parameter, orders of the HGVB, and vortex topological charge affect the propagation properties, respectively. Also, the Poynting vector and angular momentum of the HGVB are shown so that we can further discover the properties. Furthermore, radiation forces are used to demonstrate the optical trapping ability of the HGVB, and several trapping positions are formed by the beam during propagation.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.400463