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23 September 2015 Modular optical design for flexible beam shaping of a top-hat profile
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Abstract
For practical application of refractive laser beam shapers it is of major interest to know the desired manufacturing specifications to fabricate the particular elements so that an appropriate quality of the top-hat beam profile can be achieved. In the scope of this paper two different systems consisting of aspheric lenses are described, which efficiently transform a collimated Gaussian beam to a collimated top-hat beam. Both systems are of the Galilean telescope type. The design principles are discussed and the as-built performance is analyzed and compared quantitatively with the theoretical design. For this different criteria to evaluate the quality of the top-hat beam profile are defined. Additionally, the effects of deviations from the actual optical design conditions such as wavelength, input beam profile and working distance are considered for the as-built system. Consequently, valuable statements on the manufacturing requirements of the aspheric lenses can be made.
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A. Möhl, S. Wickenhagen, and U. Fuchs "Modular optical design for flexible beam shaping of a top-hat profile", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96261W (23 September 2015); https://doi.org/10.1117/12.2191062
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