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

Man, Zhongsheng; Dou, Xiujie; Urbach, H. P.

doi:10.1016/j.optcom.2019.124790

Cited by 23 publications

(6 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been found that transverse spin density (SD) has a strong connection with the spin Hall effect of light [5,6] , and the purely transverse SDVs (tSDVs) lead to an interesting optical phenomenon-the 'photonic wheel' [7][8][9] ; furthermore, the spiral behavior of the SDVs provides a new rotation freedom in optical tweezers [10][11][12] . The new features of SDVs continue to be observed [13,14] .…”

Section: Introductionmentioning

confidence: 89%

“…Maybe the most typical quantity for characterizing threedimensional (3D) optical vector fields is the spin (angular momentum) density vector (SDV), whose direction represents the orientation of the polarization ellipse, and the scale indicates the density of the spin angular momentum [1,2] . Since its important role in 3D nano-optics, for instance, in controlling lightmatter interaction [3] and in the emission directivity of a dipole-like nano-particle [4] , the SDV has attracted much attention in recent years [5][6][7][8][9][10][11][12][13][14] . It has been found that transverse spin density (SD) has a strong connection with the spin Hall effect of light [5,6] , and the purely transverse SDVs (tSDVs) lead to an interesting optical phenomenon-the 'photonic wheel' [7][8][9] ; furthermore, the spiral behavior of the SDVs provides a new rotation freedom in optical tweezers [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evolution of spin density vectors in a strongly focused composite field

2021

View full text Add to dashboard Cite

The evolution of the spin density vectors (SDVs) is studied in a strongly focused composite field. It is found that the SDVs can be spiral along the propagation axis, and they are perpendicular to the y s direction on the y s axis. This behavior is governed by the Gouy phase difference between the field polarization components. The 60°rotation of the spatial distribution of the transverse SDVs is also generated, which is found to be controlled by the Gouy phase difference between the field orbital angular momentum modes. Additionally, the spin density singularities are observed in the evolution of the SDVs.

show abstract

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Evolution of spin density vectors in a strongly focused composite field

2021

View full text Add to dashboard Cite

show abstract

“…In more recently, Z. Man etal analytically demonstrate the angular momentum properties of hybrid cylindrical vortex vector beam in tightly focused optical system [59,60]. In this paper, we numerically discuss the generation of axially splitted multiple focal spots/holes by tightly focusing of generalized CVB with annular Walsh function filter as a pupil filter.…”

Section: Introductionmentioning

confidence: 94%

Generation of axially splitted ultra-long multiple optical needles/optical tubes using generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter

Thiruarul¹,

Charles²,

Lavanya³

et al. 2022

Opt Quant Electron

View full text Add to dashboard Cite

Based on vector diffraction theory and annular Walsh function filter, axially splitted ultra-long multiple optical needles/optical tubes of electric as well as magnetic field distributions are numerically generated by generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter. This multiple optical structures can be conveniently tailored by properly tuning the initial phase of the Cylindrical vector beam(CVB) and Walsh order of the annular Walsh function filter. Furthermore, the effect of energy flux density(Poynting vector) as well as Spin angular momentum(SAM) distribution in the focal region are theoretically analyzed. We expect that such an axially splitted focal systems could be applicable in optical trapping and manipulation of multiple particles, optical super resolution microscopy etc.

show abstract

“…This leads to many extraordinary properties of non-paraxial fields, such as transverse spin angular momentum (SAM). [27][28][29][30][31][32][33][34][35][36][37][38] It is well known that SAM is closely related to optical helicity through the continuity equation. [39][40][41] Furthermore, the optical helicity is proportional to the optical chirality of the monochromatic field.…”

Section: Introductionmentioning

confidence: 99%

Optical chirality induced by spin-orbit interaction of light in a tightly focused Laguerre-Gaussian beam

Zhu

Man

2023

Chinese Phys. B

View full text Add to dashboard Cite

Optical chirality is one of the important and fundamental dynamic properties of light besides energy, momentum and angular momentum. The quantification of electromagnetic chirality has been conceptualized only recently. Now, it is well known that for paraxial plane waves of light, the optical chirality is proportional to the ellipticity of the polarization ellipse, i.e. completely independent of the phase distribution. Here it is shown that optical vortex and state of polarization of the source paraxial field both have contributions to the optical chirality of the nonparaxial field generated by tightly focused Laguerre-Gaussian beam, which is in stark contrast to the paraxial plane wave of light known from classical optics. The physical reason is the redistribution of local electromagnetic polarization in three dimensions associated with spin-orbit interaction.

show abstract

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

Cited by 23 publications

References 44 publications

Evolution of spin density vectors in a strongly focused composite field

Evolution of spin density vectors in a strongly focused composite field

Generation of axially splitted ultra-long multiple optical needles/optical tubes using generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter

Optical chirality induced by spin-orbit interaction of light in a tightly focused Laguerre-Gaussian beam

Contact Info

Product

Resources

About