Finite-element solution of the Maxwell equations for absorption and scattering of electromagnetic radiation by a coated sphere

James R. Brock; Moon Kyu Choi

doi:10.1117/12.145706

24 May 1993 Finite-element solution of the Maxwell equations for absorption and scattering of electromagnetic radiation by a coated sphere

James R. Brock, Moon Kyu Choi

Author Affiliations +

Proceedings Volume 1862, Laser Applications in Combustion and Combustion Diagnostics; (1993) https://doi.org/10.1117/12.145706
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The problem of scattering and absorption of electromagnetic radiation by particles can be solved analytically for only the simplest case, but established numerical methods allow a straightforward extension to particles with arbitrary homogeneities, arbitrary shapes, and nonlinear response. In this paper a recently developed frequency domain method involving CFD techniques is reviewed and applied to the problem of a dielectric coated sphere of arbitrary size parameter. Numerical results are in good agreement with analytical solutions. The problem is solved via the Debye amplitude formulation and then the field observables such as the heat generation are calculated. Results obtained suggest that finite element methods have promise for analytically intractable scattering/absorption problems.

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James R. Brock and Moon Kyu Choi "Finite-element solution of the Maxwell equations for absorption and scattering of electromagnetic radiation by a coated sphere", Proc. SPIE 1862, Laser Applications in Combustion and Combustion Diagnostics, (24 May 1993); https://doi.org/10.1117/12.145706

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