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Browsing by Author "Penttila, Antti"
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Beam tracing with diffraction
Taylor, Laurence; Hesse, Evelyn; Ulanowski, Z.; Kaye, Paul H.; Penttila, Antti; Nousiainen, Timo (2015-06-21) -
Discussion of a physical optics method and its application to absorbing smooth and slightly rough hexagonal prisms
Hesse, Evelyn; Taylor, Laurence; Collier, Christopher T.; Penttila, Antti; Nousiainen, Timo; Ulanowski, Zbigniew (2018-10-01)Three different mathematical solutions of a physical optics model for far field diffraction by an aperture due to Karczewski and Wolf are discussed. Only one of them properly describes diffraction by an aperture and can, ... -
Effects of Surface Roughness with Two Scales on Light Scattering by Hexagonal Ice Crystals Large Compared to the Wavelength: DDA Results
Collier, Christopher T.; Hesse, Evelyn; Taylor, Laurence; Ulanowski, Zbigniew; Penttila, Antti; Nousiainen, Timo (2016-10-01)The effect of ice crystal surface roughness on light scattering by ice crystals which are large compared to the wavelength was studied, in particular changes to the 2D scattering patterns, azimuthally averaged phase ... -
Light scattering by Gaussian rough ice crystals : experimental and modelling results
Collier, Christopher Thomas; Hesse, Evelyn; Ulanowski, Joseph; Penttila, Antti; Nousiainen, Timo; Brousseau, Emmanuel (2013-06-17)It is qualitatively well understood that ice and mixed-phase clouds have an important role in the radiation balance and climate of the Earth [1,2]. However, quantitative understanding of these clouds is poor, and is one ...