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Analysis of cylindrical microlenses simultaneously implementing beam-splitting and focusing based on rigorous electromagnetic theory

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A cylindrical microlens for implementing both functions of beam-splitting and focusing on the preset positions is proposed. Phase functions of the microlenses are determined by the ray-tracing method. The performance of the microlenses is investigated based on rigorous electromagnetic theory and the boundary element method. Numerical results show that the designed microlenses basically can realize beam-splitting and focusing on the preassigned positions simultaneously. Dual and triple beam-splitting and focusing on the expected positions by the designed microlenses are demonstrated. Diffraction efficiency of the the beam-splitting and focusing is evaluated.

Document Type: Research Article


Affiliations: 1: Department of Physics, Harbin Institute of Technology, Harbin 150001, P.R. China 2: Institute of Physics, Academia Sinica, P.O. Box 603, Beijing 100080, P.R. China

Publication date: September 1, 2004


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