Fuzzy control iterative algorithm for the design of diffractive optical elements for laser beam shaping

Yong Lin; Jiasheng Hu; Xu Wu; Kenan Wu

doi:10.1117/12.757023

4 January 2008 Fuzzy control iterative algorithm for the design of diffractive optical elements for laser beam shaping

Yong Lin, Jiasheng Hu, Xu Wu, Kenan Wu

Proceedings Volume 6832, Holography and Diffractive Optics III; 68322C (2008) https://doi.org/10.1117/12.757023
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

This paper proposes the Fuzzy Control Iterative Algorithm (FCIA) for the design of diffractive optical elements for laser beam shaping. Firstly, to improve the poor uniformity of output laser beam obtained by the G-S algorithm, we put forward the Profile Smoothing Algorithm (PSA), which is effective in improving beam uniformity but slack in controlling the Mean Square Error. Then we put forward the Fuzzy Control Iterative Algorithm, which combines PSA and G-S algorithm by fuzzy control theory. Taking advantages of GS and PSA, FCIA can decrease both Mean Square Error and nonuniformity of output beam simultaneously. Computer-designed result shows that an extremely ideal output beam is derived by using FCIA. The Mean Square Error is 0.75%. The nonuniformity is 0.46%. And the energy converting efficiency is up to 94.91%. This paper affords a novel algorithm for the design of diffractive optical elements for laser beam shaping.

Citation Download Citation

Yong Lin, Jiasheng Hu, Xu Wu, and Kenan Wu "Fuzzy control iterative algorithm for the design of diffractive optical elements for laser beam shaping", Proc. SPIE 6832, Holography and Diffractive Optics III, 68322C (4 January 2008); https://doi.org/10.1117/12.757023

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