【摘 要】
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Based on the Cantor function and phase modulation,a tunable fractal axicon is formed on a liquid crystal on silicon(LCos)with an improved generating method.It h
【机 构】
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State Key Lab for Advanced Photonic Materials and Devices,Department of Optical Science and Engineer
论文部分内容阅读
Based on the Cantor function and phase modulation,a tunable fractal axicon is formed on a liquid crystal on silicon(LCos)with an improved generating method.It has higher focusing efficiency in higher fractal stage and approaches to 100% theoretically.The on-axis intensity keeps its fractal structure unchanged in operation of fractal stages.The tunability of the axicon is demonstrated by tune fractal stage from 1 to 3 and focal length from 0.8m to 1 m.We also provide details of theoretical analyses and experimental results.
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