Efficient computation of arbitrary beam scattering on a sphere

Kashter, Yuval; Falek, Eran; Ginzburg, Pavel

doi:10.1016/j.jqsrt.2020.106887

Cited by 8 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, much more terms in the expansion are needed. This is a typical case, where electrically large scatterers are considered 33 . Those scenarios, however, are better described with the aid of physical optics.…”

Section: Resultsmentioning

confidence: 99%

Coronavirus-like all-angle all-polarization broadband scatterer

Mikhailovskaya,

Vovchuk,

Grotov

et al. 2023

Commun Eng

Self Cite

View full text Add to dashboard Cite

Creeping waves traveling around a volumetric electromagnetic scatterer provide a significant contribution to its radar cross-section. While quite a few efforts were devoted to suppressing creeping waves as a part of radar countermeasures, here we utilize specially engineered creeping waves to our advantage to create broadband, all-angle, and polarization scatterers. Metalized spherical surfaces, patterned with corona virus-like spikes are designed to provide a broadband constructive interference between the specular reflection and creeping waves, elevating the scattering cross-section. The demonstrated miniature corona scatterers utilize both resonant cascading phenomena and traveling wave interference to tailor electromagnetic interactions, outperforming a resonant dipole in terms of amplitude and bandwidth quite significantly. Our experimental samples are fabricated with an additive manufacturing technique, where a 3D-printed plastic skeleton is subsequently metalized. Micron-thick layers allow governing electromagnetic interactions as if the entire object was made of solid metal. Lightweight, all-angle, all-polarization, and broadband compact scatterers such as these, reported here, have numerous applications, including radar deception, electromagnetic beckoning, and many others.

show abstract

Section: Resultsmentioning

confidence: 99%

Coronavirus-like all-angle all-polarization broadband scatterer

Mikhailovskaya,

Vovchuk,

Grotov

et al. 2023

Commun Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…The relationship between the Stokes parameters of the incident and scattered light in scattering theory 2 , 21 can be expressed using the Mueller matrix as follows: (S0′S1′S2′S3′)=(M11M1200M12M110000M33M3400−M34M33)(S0S1S2S3).…”

Section: Theorymentioning

confidence: 99%

Depolarization diagrams for circularly polarized light scattering for biological particle monitoring

Nishizawa,

Esumi,

Ganko

2024

J. Biomed. Opt.

View full text Add to dashboard Cite

The depolarization of circularly polarized light (CPL) caused by scattering in turbid media reveals structural information about the dispersed particles, such as their size, density, and distribution, which is useful for investigating the state of biological tissue. However, the correlation between depolarization strength and tissue parameters is unclear.Aim: We aimed to examine the generalized correlations of depolarization strength with the particle size and wavelength, yielding depolarization diagrams.Approach: The correlation between depolarization intensity and size parameter was examined for single and multiple scattering using the Monte Carlo simulation method. Expanding the wavelength width allows us to obtain depolarization distribution diagrams as functions of wavelength and particle diameter for reflection and transparent geometries.Results: CPL suffers intensive depolarization in a single scattering against particles of various specific sizes for its wavelength, which becomes more noticeable in the multiple scattering regime.Conclusions: The depolarization diagrams with particle size and wavelength as independent variables were obtained, which are particularly helpful for investigating the feasibility of various particle-monitoring methods. Based on the obtained diagrams, several applications have been proposed, including blood cell monitoring, early embryogenesis, and antigen-antibody interactions.

show abstract

“…Here, we apply a Fourier optical method and decompose the input beam into an angular spectrum of plane waves. The scattered field due to each plane wave in the spectrum can be found by Mie theory 11 and summed coherently to determine the total scattered field 12 . As an example, we consider a 2.5 µm radius particle (polystyrene in air) that is centered on and illuminated by a light beam with a beam waist of 5 µm.…”

Section: Theoretical Considerationsmentioning

confidence: 99%

Scattering of light with orbital angular momentum from single particles

Hart

Sivaprakasam

Lindle

et al. 2023

Ocean Sensing and Monitoring XV

View full text Add to dashboard Cite

The use of light with orbital angular momentum (OAM) is being investigated in a wide range of fields that include material interrogation, light propagation, sensing and communication 1 . The defining characteristic of the electric field of OAM light is an angular term described by an azimuthal component such as e -imφ , which produces helical phasefronts and an angular momentum equal to mħ 2 . For the cases where m ≠ 0 the beams can have an intensity minima along the central axis creating a beam of light which is tube-like in structure. This, together with the angular component of the energy flux, can cause the scattering interactions with materials to be different than that from plane waves. Theoretical angular scattering calculations show that the light scattering maxima can occur at different angles from the forward direction of zero degrees. In this work we investigate the scattering properties of OAM light from single, micron sized spherical particles that are suspended in a linear electrodynamic trap. Using phase plates we generate OAM beams (wavelength of 532 nm) that are incident on a single suspended particle. Using three separate CCDs we capture the scattered light intensity over a total range across 40 degrees in the forward, back and side scattering planes. Comparisons between angular scattering measurements from Gaussian beams and OAM mode equal to 3 is presented.

show abstract

Efficient computation of arbitrary beam scattering on a sphere

Cited by 8 publications

References 27 publications

Coronavirus-like all-angle all-polarization broadband scatterer

Coronavirus-like all-angle all-polarization broadband scatterer

Depolarization diagrams for circularly polarized light scattering for biological particle monitoring

Scattering of light with orbital angular momentum from single particles

Contact Info

Product

Resources

About