Vector-valued Lambertian fields and their sources

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Vector-valued Lambertian fields and their sources. / Blomstedt, Kasimir; Setälä, Tero; Tervo, Jani; Hoenders, Bernhard J.; Turunen, Jari; Friberg, Ari T.

julkaisussa: Physical Review A, Vuosikerta 93, Nro 5, 053813, 09.05.2016, s. 1-10.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Harvard

Blomstedt, K, Setälä, T, Tervo, J, Hoenders, BJ, Turunen, J & Friberg, AT 2016, 'Vector-valued Lambertian fields and their sources' Physical Review A, Vuosikerta. 93, Nro 5, 053813, Sivut 1-10. https://doi.org/10.1103/PhysRevA.93.053813

APA

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Author

Blomstedt, Kasimir ; Setälä, Tero ; Tervo, Jani ; Hoenders, Bernhard J. ; Turunen, Jari ; Friberg, Ari T. / Vector-valued Lambertian fields and their sources. Julkaisussa: Physical Review A. 2016 ; Vuosikerta 93, Nro 5. Sivut 1-10.

Bibtex - Lataa

@article{8bdb750cd5a94d4ca5499e98fca632b5,
title = "Vector-valued Lambertian fields and their sources",
abstract = "The electromagnetic field within an aperture in the wall of a blackbody cavity is a known example of a Lambertian source producing a far field which is unpolarized in all directions. In this work we show that in the electromagnetic context other Lambertian sources exist whose far fields, while obeying the cosine law for the radiant intensity, differ by their polarization states and degrees. For example, the far field may be azimuthally, radially, or circularly polarized, or the polarization state may vary depending on the direction. For specific Lambertian fields generated by quasihomogeneous sources it is possible to calculate explicitly the 3×3 electric cross-spectral density matrix of the nonevanescent part of the source. This enables one to assess the source's spatial coherence and partial polarization properties. In all cases, the coherence length turns out to be roughly half a wavelength, whereas the polarization characteristics of the sources may differ significantly. Our results could find uses, for instance, in radiometry and photometry, lighting applications, and remote sensing.",
author = "Kasimir Blomstedt and Tero Set{\"a}l{\"a} and Jani Tervo and Hoenders, {Bernhard J.} and Jari Turunen and Friberg, {Ari T.}",
year = "2016",
month = "5",
day = "9",
doi = "10.1103/PhysRevA.93.053813",
language = "English",
volume = "93",
pages = "1--10",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "5",

}

RIS - Lataa

TY - JOUR

T1 - Vector-valued Lambertian fields and their sources

AU - Blomstedt, Kasimir

AU - Setälä, Tero

AU - Tervo, Jani

AU - Hoenders, Bernhard J.

AU - Turunen, Jari

AU - Friberg, Ari T.

PY - 2016/5/9

Y1 - 2016/5/9

N2 - The electromagnetic field within an aperture in the wall of a blackbody cavity is a known example of a Lambertian source producing a far field which is unpolarized in all directions. In this work we show that in the electromagnetic context other Lambertian sources exist whose far fields, while obeying the cosine law for the radiant intensity, differ by their polarization states and degrees. For example, the far field may be azimuthally, radially, or circularly polarized, or the polarization state may vary depending on the direction. For specific Lambertian fields generated by quasihomogeneous sources it is possible to calculate explicitly the 3×3 electric cross-spectral density matrix of the nonevanescent part of the source. This enables one to assess the source's spatial coherence and partial polarization properties. In all cases, the coherence length turns out to be roughly half a wavelength, whereas the polarization characteristics of the sources may differ significantly. Our results could find uses, for instance, in radiometry and photometry, lighting applications, and remote sensing.

AB - The electromagnetic field within an aperture in the wall of a blackbody cavity is a known example of a Lambertian source producing a far field which is unpolarized in all directions. In this work we show that in the electromagnetic context other Lambertian sources exist whose far fields, while obeying the cosine law for the radiant intensity, differ by their polarization states and degrees. For example, the far field may be azimuthally, radially, or circularly polarized, or the polarization state may vary depending on the direction. For specific Lambertian fields generated by quasihomogeneous sources it is possible to calculate explicitly the 3×3 electric cross-spectral density matrix of the nonevanescent part of the source. This enables one to assess the source's spatial coherence and partial polarization properties. In all cases, the coherence length turns out to be roughly half a wavelength, whereas the polarization characteristics of the sources may differ significantly. Our results could find uses, for instance, in radiometry and photometry, lighting applications, and remote sensing.

UR - http://www.scopus.com/inward/record.url?scp=84966356218&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.93.053813

DO - 10.1103/PhysRevA.93.053813

M3 - Article

VL - 93

SP - 1

EP - 10

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 5

M1 - 053813

ER -

ID: 4125559