Abstract

There are two methods for discretizing the source when the formation of a photolithographic image is modelled in terms of the Abbe model: This can be done using a rectangular grid with various discretization steps, or with radial placement of the points on a rectangular grid with various steps along a radius and along the arc length between the points. It is shown that the use of a radial distribution of the points significantly speeds up the computation process, with the modelling accuracy being mainly determined by the step along the radius.

© 2012 OSA

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