Wavelength-Dependent Multifunctional Metalens Devices via Genetic Optimization
Wavelength-Dependent Multifunctional Metalens Devices via Genetic Optimization
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DOI：
10.1364/ome.442605
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发表时间：
2021-10
影响因子：
2.8
通讯作者：
Jianzheng Ren;Tianyue Li;Boyan Fu;Shuming Wang;Zhenlin Wang;Shi-ning Zhu
中科院分区：
文献类型：
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作者：
Jianzheng Ren;Tianyue Li;Boyan Fu;Shuming Wang;Zhenlin Wang;Shi-ning Zhu
Metalenses with non-trivial performance, abundant applications, and tremendous potential, have emerged as a flat optical element or configuration in recent years. The increasing concerns about how to integrate more functions into a single metalens have become a hot topic. Here, based on a genetic algorithm, we demonstrate several metalenses with more than two optical functions depending on the wavelength of light. We first design three arbitrary chromatic dispersive metalenses, whose focal planes can be determined at will at different wavelengths. Then, a metalens-based color router is presented, which is able to guide and focus the light with four wavelengths to different positions. Furthermore, we exhibit a tri-functional structured light generator to produce focused beam, focused orbital angular momentum beam, and the Bessel beam at three wavelengths, respectively. Our results may have potential applications in dispersion manipulation, optical micro-manipulation, and subwavelength resolution spectral imaging.
