| 超声光栅与平面透射光栅衍射图样的比较研究 |
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| 引用本文： | 谢莉莎,刘彩霞,肖苏,邓小玖. 超声光栅与平面透射光栅衍射图样的比较研究[J]. 大学物理, 2010, 29(5) |
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| 作者姓名： | 谢莉莎 刘彩霞 肖苏 邓小玖 |
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| 作者单位： | 合肥工业大学物理系,安徽,合肥,230009;合肥工业大学物理系,安徽,合肥,230009;合肥工业大学物理系,安徽,合肥,230009;合肥工业大学物理系,安徽,合肥,230009 |
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| 基金项目： | 安徽省教学研究资助项目 |
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| 摘 要： | 分析了超声光栅的形成机理,给出了超声光栅衍射图样光强分布的解析表示,通过理论分析和数值模拟对超声光栅与平面透射光栅的衍射图样进行了比较研究.结果表明其衍射主极大满足类似的光栅方程,但衍射条纹的强度分布不同;都能产生缺级现象,但规律不同;超声光栅是一种动态光栅,各级衍射谱线的频率不同.
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| 关 键 词： | 超声光栅 平面透射光栅 衍射条纹 数值模拟 |
A comparative study for diffraction pattern of ultrasonic grating and plane transmission grating |
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| XIE Li-sha,LIU Cai-xia,XIAO Su,DENG Xiao-jiu. A comparative study for diffraction pattern of ultrasonic grating and plane transmission grating[J]. College Physics, 2010, 29(5) |
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| Authors: | XIE Li-sha LIU Cai-xia XIAO Su DENG Xiao-jiu |
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| Affiliation: | XIE Li-sha,LIU Cai-xia,XIAO Su,DENG Xiao-jiu(Department of Physics,Hefei University of Technology,Hefei,Anhui 230009,China) |
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| Abstract: | The formation mechanism of ultrasonic grating is analyzed,analytical expression for the light intensity distribution of diffraction pattern of ultrasonic grating is derived,as well as a comparative study of diffraction pattern of ultrasonic grating and plane transmission grating is given by theoretical analysis and numerical simulation.The results show that the diffraction principal maximum satisfies the similar grating equation,but the intensity distribution of the pattern is different,capable of generatin... |
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| Keywords: | ultrasonic grating plane transmission grating: diffraction fringes numerical simulation |
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