Investigation of the noise-like structures of the total scattering cross-section of random media.
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The pseudospectral time-domain (PSTD) algorithm is implemented to numerically solve Maxwell's equations to obtain the optical properties of millimeter-scale random media consisting of hundreds of micron-scale dielectric scatterers. Our methodology accounts for near-field interactions and coherent interference effects that are not easily modeled using other techniques. In this paper, we show that the total scattering cross-section (TSCS) of a cluster of closely packed scatterers exhibits a high-frequency oscillation structure, similar to noise. Furthermore, the characteristics and origin of such noise-like oscillation structure have been analyzed and determined based on first-principles.
author list (cited authors)
Tseng, S., Taflove, A., Maitland, D., Backman, V., & Walsh, J.
complete list of authors
Tseng, Snow||Taflove, Allen||Maitland, Duncan||Backman, Vadim||Walsh, Joseph