Multifunctional acoustic holography based on compact acoustic geometric-phase meta-array
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影响因子：2.877
DOI码：10.1063/5.0085562
发表刊物：Journal of Applied Physics
关键字：Acoustics waves; Field-control; Geometric phase; Metasurface; Optical; Spatial orientations; Wave control; Hologram
摘要：Optical geometric-phase metasurfaces provide a robust and efficient means for light wave control by simply manipulating the spatial orientations of the in-plane anisotropic meta-atoms, where polarization conversion plays a vital role. However, the concept of acoustic geometric-phase modulation for acoustic field control remains unexplored because airborne acoustic waves lack a similar optical polarization conversion process. In this work, a new type of acoustic meta-atom with deep-subwavelength feature size is theoretically investigated and further applied to acoustic field engineering based on the emerged concept of acoustic geometric phase. Herein, tunable acoustic geometric-phase modulation of designated order is obtained via the near-field coupled orbital angular momentum transfer process, and the topological charge-multiplexed acoustic geometric phase endows our meta-arrays with multiple functionalities. Our work extends the capacity of the acoustic geometric-phase meta-arrays in high-quality acoustic field reconstruction and offers new possibilities in multifunctional acoustic meta-holograms.
合写作者：Qunshuo Wei,Zhaoxian Su,Yongtian Wang
第一作者：Bingyi Liu
论文类型：期刊论文
通讯作者：Lingling Huang
论文编号：000796003000001
学科门类：理学
文献类型：J
卷号：131
期号：18
页面范围：185108
字数：3000
ISSN号：ISSN 0021-8979
是否译文：否
发表时间：2022-05-14
收录刊物：SCI