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The evolutions of spin density and energy flux of strongly focused standard full Poincaré beams. / Man, Zhongsheng; Dou, Xiujie; Urbach, Hendrik Paul.

In: Optics Communications, Vol. 458, 124790, 2020.

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@article{13c769f807874381b8391f1960107f77,
title = "The evolutions of spin density and energy flux of strongly focused standard full Poincar{\'e} beams",
abstract = "Nonzero transverse spin density, which describes phenomenon in which the electromagnetic fields of localized light spin in a plane containing its wavenumber vector, has gained enormous interest recently because of its useful applications like spin-direction coupling and routing. In this Letter, using the Richards–Wolf vectorial method for standard full Poincar{\'e} beams, we present an analytical model for the high-numerical-aperture focusing system to calculate all components of the electric and magnetic field strength vectors as well as spin density and Poynting vector. The role and contribution of the optical degrees of freedom including ellipticity, handedness, and orientation when the transverse spin density is present, are revealed based on this analytical model. Ellipticity affects the localization and magnitude of the transverse spin density for both transverse and longitudinal components. In contrast, handedness only affects the longitudinal component whereas orientation only affects the transverse component. Furthermore, the energy flux in the focal plane are also studied in detail for the standard full Poincar{\'e} beams. These findings may be help in spin-controlled directive coupling and optical tweezers.",
keywords = "Diffractive optics, Energy flow, Polarization, Spin density",
author = "Zhongsheng Man and Xiujie Dou and Urbach, {Hendrik Paul}",
year = "2020",
doi = "10.1016/j.optcom.2019.124790",
language = "English",
volume = "458",
journal = "Optics Communications",
issn = "0030-4018",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The evolutions of spin density and energy flux of strongly focused standard full Poincaré beams

AU - Man, Zhongsheng

AU - Dou, Xiujie

AU - Urbach, Hendrik Paul

PY - 2020

Y1 - 2020

N2 - Nonzero transverse spin density, which describes phenomenon in which the electromagnetic fields of localized light spin in a plane containing its wavenumber vector, has gained enormous interest recently because of its useful applications like spin-direction coupling and routing. In this Letter, using the Richards–Wolf vectorial method for standard full Poincaré beams, we present an analytical model for the high-numerical-aperture focusing system to calculate all components of the electric and magnetic field strength vectors as well as spin density and Poynting vector. The role and contribution of the optical degrees of freedom including ellipticity, handedness, and orientation when the transverse spin density is present, are revealed based on this analytical model. Ellipticity affects the localization and magnitude of the transverse spin density for both transverse and longitudinal components. In contrast, handedness only affects the longitudinal component whereas orientation only affects the transverse component. Furthermore, the energy flux in the focal plane are also studied in detail for the standard full Poincaré beams. These findings may be help in spin-controlled directive coupling and optical tweezers.

AB - Nonzero transverse spin density, which describes phenomenon in which the electromagnetic fields of localized light spin in a plane containing its wavenumber vector, has gained enormous interest recently because of its useful applications like spin-direction coupling and routing. In this Letter, using the Richards–Wolf vectorial method for standard full Poincaré beams, we present an analytical model for the high-numerical-aperture focusing system to calculate all components of the electric and magnetic field strength vectors as well as spin density and Poynting vector. The role and contribution of the optical degrees of freedom including ellipticity, handedness, and orientation when the transverse spin density is present, are revealed based on this analytical model. Ellipticity affects the localization and magnitude of the transverse spin density for both transverse and longitudinal components. In contrast, handedness only affects the longitudinal component whereas orientation only affects the transverse component. Furthermore, the energy flux in the focal plane are also studied in detail for the standard full Poincaré beams. These findings may be help in spin-controlled directive coupling and optical tweezers.

KW - Diffractive optics

KW - Energy flow

KW - Polarization

KW - Spin density

UR - http://www.scopus.com/inward/record.url?scp=85073727799&partnerID=8YFLogxK

U2 - 10.1016/j.optcom.2019.124790

DO - 10.1016/j.optcom.2019.124790

M3 - Article

AN - SCOPUS:85073727799

VL - 458

JO - Optics Communications

JF - Optics Communications

SN - 0030-4018

M1 - 124790

ER -

ID: 68364458