中国物理B ›› 2024, Vol. 33 ›› Issue (9): 94301-094301.doi: 10.1088/1674-1056/ad57ad

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Orbital angular momentum conversion of acoustic vortex beams via planar lattice coupling

Qingbang Han(韩庆邦)1, Zhipeng Liu(刘志鹏)1, Cheng Yin(殷澄)1,†, Simeng Wu(吴思梦)1, Yinlong Luo(罗寅龙)2, Zixin Yang(杨子鑫)2, Xiuyang Pang(庞修洋)2, Yiqiu Wang(王溢秋)1, Xuefen Kan(阚雪芬)3, Yuqiu Zhang(张雨秋)2, Qiang Yu(俞强)2,4, and Jian Wu(吴坚)2,‡   

  1. 1 College of Information Science and Engineering, Hohai University, Changzhou 213200, China;
    2 College of Advanced Interdisciplinary Studies, Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China;
    3 School of Transportation Engineering, Jiangsu Shipping College, Nantong 226010, China;
    4 i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
  • 收稿日期:2024-04-02 修回日期:2024-05-23 接受日期:2024-06-13 发布日期:2024-08-15
  • 通讯作者: Cheng Yin, Jian Wu E-mail:yinch@hhu.edu.cn;wujian15203@163.com
  • 基金资助:
    This work was supported by the National Natural Science foundation of China (Grant No. 12174085), the Fundamental Research Funds for the Central Universities (Grant No. B220202018), the Basic Science (Natural Science) Research Project for the Universities of Jiangsu Province (Grant No. 23KJD140002), and Natural Science Foundation of Nantong (Grant No. JC2023081).

Orbital angular momentum conversion of acoustic vortex beams via planar lattice coupling

Qingbang Han(韩庆邦)1, Zhipeng Liu(刘志鹏)1, Cheng Yin(殷澄)1,†, Simeng Wu(吴思梦)1, Yinlong Luo(罗寅龙)2, Zixin Yang(杨子鑫)2, Xiuyang Pang(庞修洋)2, Yiqiu Wang(王溢秋)1, Xuefen Kan(阚雪芬)3, Yuqiu Zhang(张雨秋)2, Qiang Yu(俞强)2,4, and Jian Wu(吴坚)2,‡   

  1. 1 College of Information Science and Engineering, Hohai University, Changzhou 213200, China;
    2 College of Advanced Interdisciplinary Studies, Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China;
    3 School of Transportation Engineering, Jiangsu Shipping College, Nantong 226010, China;
    4 i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
  • Received:2024-04-02 Revised:2024-05-23 Accepted:2024-06-13 Published:2024-08-15
  • Contact: Cheng Yin, Jian Wu E-mail:yinch@hhu.edu.cn;wujian15203@163.com
  • Supported by:
    This work was supported by the National Natural Science foundation of China (Grant No. 12174085), the Fundamental Research Funds for the Central Universities (Grant No. B220202018), the Basic Science (Natural Science) Research Project for the Universities of Jiangsu Province (Grant No. 23KJD140002), and Natural Science Foundation of Nantong (Grant No. JC2023081).

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摘要： Orbital angular momentum (OAM) conversion is critical in understanding interactions between a structural sound field and a planar lattice. Herein, we explore the evolution of a monochromatic acoustic vortex beam (AVB) that is scattered by a phononic crystal (PnC) or a correlated random lattice. The phenomenon is ascribed to the enhanced orbit-orbit angular momentum coupling induced by the band structure. By modifying the coupling condition, accurate and continuous micro-manipulation of AVBs can be achieved, including the transverse/lateral gravity shift, the dynamics of the phase singularities, and the spatial distribution of acoustic pressure, etc. This research provides insight to the inhomogeneous coupling of AVBs with both propagating Bloch waves and localized Anderson modes, and may facilitate development of novel OAM-based acoustic devices for active sound field manipulation.

关键词: acoustic vortex beam, phononic crystal, Anderson localization, Imbert-Fedorov effect

Abstract: Orbital angular momentum (OAM) conversion is critical in understanding interactions between a structural sound field and a planar lattice. Herein, we explore the evolution of a monochromatic acoustic vortex beam (AVB) that is scattered by a phononic crystal (PnC) or a correlated random lattice. The phenomenon is ascribed to the enhanced orbit-orbit angular momentum coupling induced by the band structure. By modifying the coupling condition, accurate and continuous micro-manipulation of AVBs can be achieved, including the transverse/lateral gravity shift, the dynamics of the phase singularities, and the spatial distribution of acoustic pressure, etc. This research provides insight to the inhomogeneous coupling of AVBs with both propagating Bloch waves and localized Anderson modes, and may facilitate development of novel OAM-based acoustic devices for active sound field manipulation.

Key words: acoustic vortex beam, phononic crystal, Anderson localization, Imbert-Fedorov effect

中图分类号:  (Structural acoustics and vibration)

  • 43.40.+s
43.20.+g (General linear acoustics) 46.40.-f (Vibrations and mechanical waves) 46.40.Cd (Mechanical wave propagation (including diffraction, scattering, and dispersion))