Publication Abstracts

Mishchenko et al. 2017

Mishchenko, M.I., G. Videen, and P. Yang, 2017: Extinction by a homogeneous spherical particle in an absorbing medium. Opt. Lett., 42, 4873-4876, doi:10.1364/OL.42.004873.

We use a recent computer implementation of the first- principles theory of electromagnetic scattering to compute far-field extinction by a spherical particle embedded in an absorbing unbounded host. Our results show that the suppressing effect of increasing absorption inside the host medium on the ripple structure of the extinction efficiency factor as a function of size parameter is similar to the well- known effect of increasing absorption inside a particle embedded in a nonabsorbing host. However, the accompanying effects on the interference structure of the extinction efficiency curves are diametrically opposite. As a result, sufficiently large absorption inside the host medium can cause negative particulate extinction. We offer a simple physical explanation of the phenomenon of negative extinction consistent with the interpretation of the interference structure as being the result of interference of the field transmitted by the particle and the diffracted field due to an incomplete wave-front resulting from the blockage of the incident plane wave by the particle's geometrical projection.

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BibTeX Citation

@article{mi08320e,
  author={Mishchenko, M. I. and Videen, G. and Yang, P.},
  title={Extinction by a homogeneous spherical particle in an absorbing medium},
  year={2017},
  journal={Opt. Lett.},
  volume={42},
  pages={4873--4876},
  doi={10.1364/OL.42.004873},
}

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RIS Citation

TY  - JOUR
ID  - mi08320e
AU  - Mishchenko, M. I.
AU  - Videen, G.
AU  - Yang, P.
PY  - 2017
TI  - Extinction by a homogeneous spherical particle in an absorbing medium
JA  - Opt. Lett.
VL  - 42
SP  - 4873
EP  - 4876
DO  - 10.1364/OL.42.004873
ER  -

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