| 标准盐度下水的受激布里渊散射阈值研究 |
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| 引用本文： | 赵晚昭,刘伟,周柳娜,赵晚春. 标准盐度下水的受激布里渊散射阈值研究[J]. 物联网技术, 2012, 0(8): 41-43,47 |
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| 作者姓名： | 赵晚昭 刘伟 周柳娜 赵晚春 |
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| 作者单位： | 广西大学行健文理学院;江西省锅炉压力容器检验检测研究院;广西交通技师学院 |
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| 摘 要： | 从基本的耦合波方程出发,推导出受激布里渊散射公式,同时得出了可探测到的受激布里渊散射条件,以及间接可探测受激布里渊散射的阈值方法。采用测量激光射入不同长度样品产生SBS回波信号及透过介质激光能量强度的改变,并通过特定公式得出35‰的海水标准盐度下不同长度样品对激光的衰减情况。最后在项目所处条件下,验证了35‰海水标准盐度下受激布里渊散射阈值的存在。对受激布里渊散射阈值的产生进行了分析,并在与纯水中SBS阈值的对比中,得出了相同条件标准盐度下水的阈值较纯水中大的结果。
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| 关 键 词： | 受激布里渊散射 35‰盐度 阈值 激光 |
Study of stimulated Brillouin scattering threshold in water with standard salinity |
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| ZHAO Wan-zhao,LIU Wei,ZHOU Liu-na,ZHAO Wan-chun. Study of stimulated Brillouin scattering threshold in water with standard salinity[J]. Internet of things technologies, 2012, 0(8): 41-43,47 |
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| Authors: | ZHAO Wan-zhao LIU Wei ZHOU Liu-na ZHAO Wan-chun |
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| Affiliation: | 1.Xingjian College of Sciences and Liberal Arts,Guangxi University,Nanning 530005,China;2.Jiangxi Province Boiler and Pressure Vessel Inspection and Testing Institute,Nanchang 330000,China 3.Guangxi Traffic Technician College,Nanning 530000,China) |
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| Abstract: | Stimulated Brillouin scattering(SBS) formula is derived from basic coupled wave equation.The conditions of SBS detection and an indirect measuring technique for SBS threshold are obtained at the same time.SBS echo signals formed by the reflected portion of laser at different lengths of water sample are measured and the change of the laser energy intensity through the medium is analyzed.Attenuation coefficient of laser beam at different lengths of water sample of 35‰ salinity is got.Finally,the existence of SBS threshold under the condition of sea water of 35‰ salinity is tested and the producing conditions of SBS threshold is analyzed.Compared with SBS threshold in pure water,threshold in water of standard salinity is larger than that in pure water under the same condition. |
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| Keywords: | stimulated Brillouin scattering salinity of 35 permille threshold laser |
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