Scalar diffraction field calculation from curved surfaces via Gaussian beam decomposition
Journal of the Optical Society of America A: Optics and Image Science, and Vision
Optical Society of America
1459 - 1469
Item Usage Stats
MetadataShow full item record
We introduce a local signal decomposition method for the analysis of three-dimensional (3D) diffraction fields involving curved surfaces. We decompose a given field on a two-dimensional curved surface into a sum of properly shifted and modulated Gaussian-shaped elementary signals. Then we write the 3D diffraction field as a sum of Gaussian beams, each of which corresponds to a modulated Gaussian window function on the curved surface. The Gaussian beams are propagated according to a derived approximate expression that is based on the Rayleigh-Sommerfeld diffraction model. We assume that the given curved surface is smooth enough that the Gaussian window functions on it can be treated as written on planar patches. For the surfaces that satisfy this assumption, the simulation results show that the proposed method produces quite accurate 3D field solutions.
Three dimensional computer graphics
Published Version (Please cite this version)http://dx.doi.org/10.1364/JOSAA.29.001459
Showing items related by title, author, creator and subject.
Uzunov, V.; Esmer, G. B.; Gotchev, A.; Onural, L.; Ozaktas, H. M. (2007)A discrete computational model for the diffraction process is essential in forward problems related to holographic TV. The model must be as general as possible, since the shape of the displayed objects does not bear any ...
Esmer, G. B.; Uzunov, V.; Onural, L.; Gotchev, A.; Ozaktas, H. M. (2007)Diffraction field computation is an important task in the signal conversion stage of the holographic 3DTV. We consider an abstract setting, where the diffraction field of the desired 3D scene to be displayed is given by ...
The effect of growth conditions on the optical and structural properties of InGaN/GaN MQW LED structures grown by MOCVD Cetđn, S.; Sağlam, S.; Ozcelđk, S.; Ozbay, E. (Gazi University Eti Mahallesi, 2014)Five period InGaN/GaN MQW LED wafers were grown by low pressure MOCVD on an AlN buffer layer, which was deposited on a c-plane (0001)-faced sapphire substrate. The effect of growth conditions, such as the well growth time, ...