Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma

The explicit expression of orbital angular momentum (OAM) spiral spectrum of Laguerre-Gaussian (LG) beam propagating in anisotropic plasma turbulence is derived based on Rytov theory. The relationship between the detection probability of OAM and the crosstalk with the anisotropy parameters, topologi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yankun Wang, Lu Bai, Danmeng Zhang, Jinyu Xie, Ya Guo, Lixin Guo
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Orbital angular momentum spiral spectrum anisotropic turbulence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/30f56e1ad7b3453cad446759c0731cc5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:30f56e1ad7b3453cad446759c0731cc5
record_format	dspace
spelling	oai:doaj.org-article:30f56e1ad7b3453cad446759c0731cc52021-11-09T00:00:08ZSpiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma1943-065510.1109/JPHOT.2021.3119337https://doaj.org/article/30f56e1ad7b3453cad446759c0731cc52021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9568711/https://doaj.org/toc/1943-0655The explicit expression of orbital angular momentum (OAM) spiral spectrum of Laguerre-Gaussian (LG) beam propagating in anisotropic plasma turbulence is derived based on Rytov theory. The relationship between the detection probability of OAM and the crosstalk with the anisotropy parameters, topological charge, radial index, wavelength, beam width, receiving aperture, inner and outer scales are discussed in detail. In order to quantify the effect of plasma turbulence, we compared it with atmospheric turbulence based on restriction function. To optimize OAM detection probability, we also compared the effects of circular aperture method (CAM) with focusing mirror method (FMM) on the propagation characteristics of the spiral spectrum. The results show that even in the strong turbulence region of atmospheric turbulence, the radial dimension of LG beam in plasma turbulence is nearly twice that of atmospheric turbulence and the modes crosstalk has almost reached its upper bound. Besides, by comparing the two optimization methods, we found the ability to reduce crosstalk is related to the choice of beam width and receiving aperture. Therefore, we give a method to optimally select between the CAM and the FMM. We found the corresponding relationship and gave an analytical formula. The FMM has a greater ability to reduce crosstalk than the CAM when the beam width ≥4 cm and the aperture ≥3 cm. We quantified the effect of plasma turbulence and provide a guideline for the selection of beam width and receiving aperture under these two optimization methods. The research results may be helpful in the field of optical communication.Yankun WangLu BaiDanmeng ZhangJinyu XieYa GuoLixin GuoIEEEarticleOrbital angular momentumspiral spectrumanisotropic turbulenceApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 13, Iss 6, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Orbital angular momentum spiral spectrum anisotropic turbulence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Orbital angular momentum spiral spectrum anisotropic turbulence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Yankun Wang Lu Bai Danmeng Zhang Jinyu Xie Ya Guo Lixin Guo Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
description	The explicit expression of orbital angular momentum (OAM) spiral spectrum of Laguerre-Gaussian (LG) beam propagating in anisotropic plasma turbulence is derived based on Rytov theory. The relationship between the detection probability of OAM and the crosstalk with the anisotropy parameters, topological charge, radial index, wavelength, beam width, receiving aperture, inner and outer scales are discussed in detail. In order to quantify the effect of plasma turbulence, we compared it with atmospheric turbulence based on restriction function. To optimize OAM detection probability, we also compared the effects of circular aperture method (CAM) with focusing mirror method (FMM) on the propagation characteristics of the spiral spectrum. The results show that even in the strong turbulence region of atmospheric turbulence, the radial dimension of LG beam in plasma turbulence is nearly twice that of atmospheric turbulence and the modes crosstalk has almost reached its upper bound. Besides, by comparing the two optimization methods, we found the ability to reduce crosstalk is related to the choice of beam width and receiving aperture. Therefore, we give a method to optimally select between the CAM and the FMM. We found the corresponding relationship and gave an analytical formula. The FMM has a greater ability to reduce crosstalk than the CAM when the beam width ≥4 cm and the aperture ≥3 cm. We quantified the effect of plasma turbulence and provide a guideline for the selection of beam width and receiving aperture under these two optimization methods. The research results may be helpful in the field of optical communication.
format	article
author	Yankun Wang Lu Bai Danmeng Zhang Jinyu Xie Ya Guo Lixin Guo
author_facet	Yankun Wang Lu Bai Danmeng Zhang Jinyu Xie Ya Guo Lixin Guo
author_sort	Yankun Wang
title	Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
title_short	Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
title_full	Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
title_fullStr	Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
title_full_unstemmed	Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma
title_sort	spiral spectrum of a laguerre-gaussian beam propagating in anisotropic turbulent plasma
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/30f56e1ad7b3453cad446759c0731cc5
work_keys_str_mv	AT yankunwang spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma AT lubai spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma AT danmengzhang spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma AT jinyuxie spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma AT yaguo spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma AT lixinguo spiralspectrumofalaguerregaussianbeampropagatinginanisotropicturbulentplasma
_version_	1718441373968891904

Spiral Spectrum of a Laguerre-Gaussian Beam Propagating in Anisotropic Turbulent Plasma

Ejemplares similares