| 干涉法测量低频表面波的衰减系数 |
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| 引用本文： | 苗润才,时坚,赵晓凤.干涉法测量低频表面波的衰减系数[J].光子学报,2005,34(3):382-385. |
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| 作者姓名： | 苗润才 时坚 赵晓凤 |
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| 作者单位： | 榆林学院物理系,陕西榆林,719000;陕西师范大学物理学与信息技术学院,西安,710062;陕西师范大学物理学与信息技术学院,西安,710062 |
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| 基金项目： | 教育部骨干教师基金资助项目(200065) |
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| 摘 要： | 对于频率为几十赫兹的低频衰减液体表面波，结合激光干涉法和激光扫描法，实验得到反衬度很高的调制干涉图样，理论上给出了干涉图样的条纹宽度，条纹分布范围与表面声波振幅之间的解析关系，实时测量了液体表面波的衰减系数.
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| 关 键 词： | 光干涉 表面声波 衰减系数 |
| 收稿时间： | 2003-12-30 |
| 修稿时间： | 2003年12月30 |
Determination of the Attenuation Coefficient of Surface Acoustic Wave by Means of the Light Interference |
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| Miao Runcai,Shi Jian,Zhao Xiaofeng.Determination of the Attenuation Coefficient of Surface Acoustic Wave by Means of the Light Interference[J].Acta Photonica Sinica,2005,34(3):382-385. |
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| Authors: | Miao Runcai Shi Jian Zhao Xiaofeng |
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| Institution: | 1 Department of Physics,Yulin College,Shaanxi Yulin 719000;2 Institute of Physics and Information Technology Shaanxi Normal University Xi′an 710062 |
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| Abstract: | A practicable method for liquid-surface acoustic-wave at the frequencies of a few tens Hertz, based on the combination of optical interference and scanning wave slope, has been developed. Moreover, this technique was used to determine the attenuation coefficient of the surface wave at these frequencies in real time. |
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| Keywords: | Light Interference Surface acoustic-waves Attenuation coefficient |
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