| Dynamical behavior and propagation characteristic of partially coherent sinh-Airy beams in oceanic turbulence |
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| 作者姓名： | 周燕 程科 朱博源 姚纳 钟先琼 |
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| 作者单位： | College of Optoelectronic Technology |
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| 基金项目： | This work has been supported by the Natural Science Foundation of Sichuan Education Committee(No.17ZA0072)。 |
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| 摘 要： | By introducing the hyperbolic sine function to Airy beam, the dynamic behavior and propagation characteristics of partially coherent sinh-Airy beams in oceanic turbulence are studied using approximate analytical intensity expression. The influence of sinh modulation parameter, coherence length and ocean parameters on intensity evolution, beam width and kurtosis parameter is mainly discussed. The results show that a non-zero sinh modulation parameter presents not only the insensitivity to oceanic turbulence, but a smaller beam width. Furthermore, it also improves kurtosis parameter. These findings bring advantages in signal reception for long distance. In addition, a larger relative intensity of temperature or salinity fluctuations, mean square temperature dissipation rate, or a smaller dissipation rate of turbulence kinetic energy is more liable to increase beam width, or decrease intensity and kurtosis parameter of partially coherent sinh-Airy beams. The results provide an opportunity for improving signal reception of underwater communication or target detection by Airy beams or their groups.
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| 关 键 词： | parameter. TURBULENCE COHERENT |
| 收稿时间： | 2019/11/24 0:00:00 |
| 修稿时间： | 2020/2/17 0:00:00 |
Dynamical behavior and propagation characteristic of partially coherent sinh-Airy beams in oceanic turbulence |
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| ZHOU Yan,CHENG Ke,ZHU Bo-yuan,YAO Na and ZHONG Xian-qiong.Dynamical behavior and propagation characteristic of partially coherent sinh-Airy beams in oceanic turbulence[J].Opto-electronics Letters,2021,17(1):59-64. |
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| Authors: | ZHOU Yan CHENG Ke ZHU Bo-yuan YAO Na and ZHONG Xian-qiong |
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| Affiliation: | College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China,College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China,College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China,College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China and College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China |
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| Abstract: | By introducing the hyperbolic sine function to Airy beam, the dynamic behavior and propagation characteristics of partially coherent sinh-Airy beams in oceanic turbulence are studied using approximate analytical intensity expression. The influence of sinh modulation parameter, coherence length and ocean parameters on intensity evolution, beam width and kurtosis parameter is mainly discussed. The results show that a non-zero sinh modulation parameter presents not only the insensitivity to oceanic turbulence, but a smaller beam width. Furthermore, it also improves kurtosis parameter. These findings bring advantages in signal reception for long distance. In addition, a larger relative intensity of temperature or salinity fluctuations, mean square temperature dissipation rate, or a smaller dissipation rate of turbulence kinetic energy is more liable to increase beam width, or decrease intensity and kurtosis parameter of partially coherent sinh-Airy beams. The results provide an opportunity for improving signal reception of underwater communication or target detection by Airy beams or their groups. |
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