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Acoustic orbital angular momentum prism for efficient vortex perception
Applied Physics Letters ( IF 4 ) Pub Date : 2021-02-16 , DOI: 10.1063/5.0041398 Xue Jiang 1 , Nengyin Wang 2 , Chuanxin Zhang 1 , Xinsheng Fang 2 , Shengquan Li 3 , Xiaoyu Sun 3 , Yong Li 2 , Dean Ta 1 , Weiqi Wang 1
Applied Physics Letters ( IF 4 ) Pub Date : 2021-02-16 , DOI: 10.1063/5.0041398 Xue Jiang 1 , Nengyin Wang 2 , Chuanxin Zhang 1 , Xinsheng Fang 2 , Shengquan Li 3 , Xiaoyu Sun 3 , Yong Li 2 , Dean Ta 1 , Weiqi Wang 1
Affiliation
Acoustic orbital angular momentum (OAM) has emerged as a new multiplexing degree of freedom in acoustic communication and shows application prospect in particle manipulation. The separation and detection of acoustic vortices carrying different OAM are significant in OAM-based signal de-multiplexing. In this work, we theoretically proposed and experimentally demonstrated an OAM prism for efficient and quantitative vortex perception, which converts the spiral vortices into the transmitted plane waves of different refraction angles. The refraction angle is linearly dependent on the topological charge of the vortices, enabling the expedient readout of the information coded in each vortex. The designed OAM prism provides a simple and effective method for vortex perception and on-chip detection in the transmission field.
中文翻译:
声学轨道角动量棱镜,可有效感知涡旋
声轨道角动量(OAM)作为声通信中的一种新的复用自由度而出现,并显示了在粒子操纵中的应用前景。带有不同OAM的声涡流的分离和检测在基于OAM的信号多路分解中非常重要。在这项工作中,我们从理论上提出并通过实验证明了OAM棱镜可有效且定量地感知涡旋,该涡旋将螺旋旋涡转换为具有不同折射角的透射平面波。折射角线性依赖于漩涡的拓扑电荷,从而可以方便地读取每个漩涡中编码的信息。设计的OAM棱镜为传输领域中的涡旋感知和片上检测提供了一种简单有效的方法。
更新日期:2021-02-19
中文翻译:
声学轨道角动量棱镜,可有效感知涡旋
声轨道角动量(OAM)作为声通信中的一种新的复用自由度而出现,并显示了在粒子操纵中的应用前景。带有不同OAM的声涡流的分离和检测在基于OAM的信号多路分解中非常重要。在这项工作中,我们从理论上提出并通过实验证明了OAM棱镜可有效且定量地感知涡旋,该涡旋将螺旋旋涡转换为具有不同折射角的透射平面波。折射角线性依赖于漩涡的拓扑电荷,从而可以方便地读取每个漩涡中编码的信息。设计的OAM棱镜为传输领域中的涡旋感知和片上检测提供了一种简单有效的方法。