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DOI: 10.17586/1023-5086-2023-90-05-29-40
УДК: 535.015
Modeling of the focal-pishaper with the ray-mapping method
Full text on elibrary.ru
Publication in Journal of Optical Technology
Subject of study. modified ray mapping method for the synthesis of two-component shaper. These shapers are used to obtain a uniform intensity flat-top profile. Aim of study. Development and approbation of an algorithm for the method of simultaneous synthesis of a pair of a two-component laser radiation Focal-piShaper. Method. The algorithm for calculating the design parameters of a pair of freeform optical surfaces is based on simultaneous ray tracing in the forward and reverse directions by modifying the ray-mapping method. Main results. It is shown that the implemented algorithm works efficiently enough with a large distance between the components. The calculated model of the beam-shaper has a residual transverse aberration Dyўmax < 0.82 mrad, the mean-square deviation of the intensity distribution of the output radiation from the required one is no more than 1% for the refractive surface tolerance equal to 0.05 µm. The effective conservation length of the output beam is up to 50 mm. Practical significance. The developed algorithm for the synthesis of the optical system of the laser Focal-piShaper uses a preset distribution of radiation intensity on the input and output target surfaces, can be used to design laser beam-shapers forming various intensity distribution profiles, that confirms its versatility.
laser beam-shaper, freeforms, optical system design, ray-mapping method, splines
OCIS codes: 080.0080, 080.4225, 140.0140, 080.1753
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