18 June 1998 Design of diffractive beam-shaping elements for nonuniform illumination waves
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Abstract
A method for the design of diffractive beam-shaping elements is presented which extends the finite-element-meshes method proposed by Dresel et al. In particular, the modified method can be applied to non-uniform intensity distributions in the input and output planes. This extension is of practical significance due to the non-uniformity of real laser beam intensity distributions. The method is shown to result in so-called smooth phase functions which are desired for beam- shaping applications to overcome the well-known speckle problem. Transmission functions of diffractive phase-only elements have been computed solving beam-shaping problems of practical relevance. We have demonstrated by numerical simulation experiments that the computed elements perform the desired beam-shaping operations in good approximation.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andreas Hermerschmidt, Andreas Hermerschmidt, Hans Joachim Eichler, Hans Joachim Eichler, Stephan Teiwes, Stephan Teiwes, Joerg Schwartz, Joerg Schwartz, } "Design of diffractive beam-shaping elements for nonuniform illumination waves", Proc. SPIE 3291, Diffractive and Holographic Device Technologies and Applications V, (18 June 1998); doi: 10.1117/12.310592; https://doi.org/10.1117/12.310592
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