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EN
The methodology of calculation of the fifth-order aberrations of gradient-index (GRIN) media by application of computer symbolic calculations (computer algebra) is presented. The software package applied was REDUCE. The results obtained enabled us to correct the results known from the literature. The designed computer program has also been added. A special computer program has also been designed.
3
Content available remote Boundary diffraction wave as a phase filter correction tool.
EN
A filter which transforms the Gaussian intensity distribution into the uniform one has been considered. Two examples of the modification of the filter function near its edge, making the intensity distribution smoother, are shown.
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