Light Scattering By Particles: Computational Methods

Boundary element method for resonances in dielectric microcavities

“…Figure 5 shows the total cross section σ for plane-wave scattering with incidence angle φ = 15 • computed from Eq. (20). The dominant structure is a series of equidistant peaks of roughly Lorentzian shape.…”

“…Let us fix φ to an appropriate value and plot the total cross section in Eq. (20) as function of k in the range of interest. Resonances can be identified as peaks.…”

“…Moreover, they can be removed with a simple trick: use k with a small negative imaginary part in Eq. (20).…”

“…Ref. [20]) and to results of the wave-matching method obtained for the quadrupolar cavity [1]. Only for extremely long-lived resonances larger b are necessary to determine the very small imaginary parts of k accurately (recall that this is important for distinguishing spurious solutions from real resonances).…”

Comparison of techniques for non-intrusive fuel drop size measurements in a subscale gas turbine combustor

“…The differences in the internal intensities for minimally and highly absorbing drops were computed using Mie scattering code for spheres published by Barber and Hill, 1990. Although these internal intensities are for the incident wavelength only, it is assumed that the fluorescence signal will be proportional to the intensity of the exciting laser light.…”