Calculation of diffractive optical elements in geometrical optics approximation
3.1 Calculation of DOE for focusing into a curve in geometrical optics approximation
One of the most interesting types of DOE is formed by focusators of laser radiation. Focusators are the DOEs focusing laser radiation into thin lines or small areas of space calculated in the geometrical optics approximation and having the regular structure of the microrelief. They were proposed and discussed the first time in Russia in 1981 [1]. The studies of I.N. Sisakin, V.A. Soifer, V.A. Danilov and of a number of other Russian investigators in the first half of the 80s resulted in the fundamental geometrical optics solutions of focusing and in the construction of various ...
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