利用声学共振产生声学轨道角动量
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- 英文论文题名：Convert acoustic resonances to orbital angular momentum
- 论文作者：江雪 ; 李勇 ; 梁彬 ; 程建春 ; 张黎昆
- 英文论文作者：JIANG Xue ; LI Yong ; LIANG Bin ; CHENG Jian-chun ; ZHANG Li-kun ; Institute of acoustics ; Nanjing University ; France and Université de Lorraine ; Institut Jean Lamour ; Boulevard des Aiguillettes ; Department of Physics and Center for Nonlinear Dynamics ; University of Texas at Austin
- 年：2016
- 作者机构：南京大学声学所;法国科学院;德克萨斯大学奥斯汀分校;
- 论文关键词：声学共振 ; 轨道角动量 ; 声学涡旋场
- 英文论文关键词：acoustic resonance ; orbital angular momentum ; acoustic vortex
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：O422.6
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：474k
- 原文格式：D
- 会议级别：全国
摘要
利用厚度为半波长的平面形声学共振体,使入射平面波的声波矢量发生扭曲,从而产生携带特定轨道角动量的声学涡旋场。通过在仿真和实验中产生贝塞尔型声学涡旋场来验证该种全新的轨道角动量转换机制。传统的产生声学涡旋场的方法,或需要繁冗复杂的换能器以及电路控制,或需要体积庞大的螺旋分布型几何结构。在该种转换机制下所设计的声学共振体具有高效率、小体积、平面状的特点,将为产生声学涡旋场提供新的可能性,促进在实际中的进一步应用。
We use acoustic resonances in a planar layer of half-wavelength thickness to twist wave vectors of an in-coming plane wave into a spiral phase dislocation of an outgoing vortex beam with orbital angular momentum(OAM). The mechanism is numerically and experimentally demonstrated by producing an airborne Bessel-like vortex beam. Our acoustic resonance-based OAM production differs from existing means for OAM production by enormous phased spiral sources or by elaborate spiral profiles. Our study can advance the capability of generating phase dislocaed wave fields for further applications of acoustic OAM.
We use acoustic resonances in a planar layer of half-wavelength thickness to twist wave vectors of an in-coming plane wave into a spiral phase dislocation of an outgoing vortex beam with orbital angular momentum(OAM). The mechanism is numerically and experimentally demonstrated by producing an airborne Bessel-like vortex beam. Our acoustic resonance-based OAM production differs from existing means for OAM production by enormous phased spiral sources or by elaborate spiral profiles. Our study can advance the capability of generating phase dislocaed wave fields for further applications of acoustic OAM.
引文
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[7]Jiang X,Zhao J,Liu S,et al.Broadband and stable acoustic vortex emitter with multi-arm coiling slits[J].Applied Physics Letters,2016,108(20):165.Jiang X,Li Y,Liang B,Cheng J C,Zhang L.Convert Acoustic Resonances to Orbital Angular Momentum[J].Physical Review Letters,2016,117.
[2]Zhang L,Marston P L.Angular momentum flux of nonparaxial acoustic vortex beams and torques on axisymmetric objects[J].Physical Review E,2011,84(6 Pt 2):2184-2188.
[3]Zhang L,Marston P L.Acoustic radiation torque on small objects in viscous fluids and connection with viscous dissipation[J].Journal of the Acoustical Society of America,2014,136(136):2917-2917.
[4]Anh?user A,Wunenburger R,Brasselet E.Acoustic rotational manipulation using orbital angular momentum transfer.[J].Physical Review Letters,2012,109(3):3701-3704.
[5]Hong Z,Zhang J,Drinkwater B W.Observation of orbital angular momentum transfer from bessel-shaped acoustic vortices to diphasic liquid-microparticle mixtures[J].Physical Review Letters,2015,114(21).
[6]Marchiano R,Thomas J L.Synthesis and analysis of linear and nonlinear acoustical vortices.[J].Physical Review E Statistical Nonlinear&Soft Matter Physics,2005,71(2):-.
[7]Jiang X,Zhao J,Liu S,et al.Broadband and stable acoustic vortex emitter with multi-arm coiling slits[J].Applied Physics Letters,2016,108(20):165.Jiang X,Li Y,Liang B,Cheng J C,Zhang L.Convert Acoustic Resonances to Orbital Angular Momentum[J].Physical Review Letters,2016,117.