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Often the polynomial description of a wavefront shape is inaccurate because sharp local deformations are difficult to represent. In this case an analytical representation in terms of Gaussians may… (More)
Birefringence in rods with a gradient refractive index (GRIN rods) is caused by anisotropic stresses produced in the doping process that is used to introduce its inhomogeneity. Due to this… (More)
The wavefronts in some optical systems like radial Gradient Index (GRIN) rods and aspherical lenses have large radial slopes at the circular edge of the pupil. Then some special mathematical tools… (More)