Exact dipolar moments of a localized electric current distribution

Optics Express
Ivan Fernandez-CorbatonCarsten Rockstuhl

Abstract

The multipolar decomposition of current distributions is used in many branches of physics. Here, we obtain new exact expressions for the dipolar moments of a localized electric current distribution. The typical integrals for the dipole moments of electromagnetically small sources are recovered as the lowest order terms of the new expressions in a series expansion with respect to the size of the source. All the higher order terms can be easily obtained. We also provide exact and approximated expressions for dipoles that radiate a definite polarization handedness (helicity). Formally, the new exact expressions are only marginally more complex than their lowest order approximations.

References

Nov 6, 2010·Science·T KaelbererN I Zheludev
May 28, 2013·Physical Review Letters·Carl Pfeiffer, Anthony Grbic
Aug 27, 2013·Physical Review Letters·Ivan Fernandez-CorbatonGabriel Molina-Terriza
Apr 4, 2015·Physical Review Letters·Mikolaj K SchmidtJuan José Sáenz

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Citations

May 5, 2016·Nanoscale·Xavier Zambrana-Puyalto, Nicolas Bonod
Jan 10, 2019·Nanoscale·Rocio Camacho-MoralesMartti Kauranen
Aug 10, 2017·Scientific Reports·Ivan Fernandez-CorbatonCarsten Rockstuhl
Mar 16, 2017·Optics Letters·E MobiniC Rockstuhl
Feb 27, 2020·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ivan Fernandez-CorbatonWim Klopper
Apr 1, 2021·Chemical Reviews·Changhyoup LeeMark Tame

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