Raman-Nath衍射光强的研究  

Research on Light Intensity for Raman-Nath Diffraction

作　　者：杨桂娟[1] 郝斌[2] 王君[1] 石华[1] 

机构地区：[1]大连海洋大学理学院,辽宁大连116023 [2]中国科学院研究生院,北京100049

出　　处：《压电与声光》2011年第4期533-535,共3页Piezoelectrics & Acoustooptics

基　　金：中国高等教育学会2010年专项课题基金资助项目(2010CX116);辽宁省教育科学"十一五"规划立项课题基金资助项目(JG09DB024);辽宁省教育厅基金资助项目[辽教发(2007)140号];大连海洋大学基金资助项目[水院发(2009)139号]

摘　　要：介绍了一种新的关于拉曼-内斯(Raman-Nath)衍射光强的推导方法。采用先推导超声光栅中一个"栅缝"的衍射光强,然后再考虑周期排列的N个缝的缝间干涉因子的思路,从而得到光强。该方法体现了周期性,得出了主极大的半角宽度,次级大的数目位置等性质,最后对这些性质的应用进行了探讨。A new method of the deduction of light intensity for Raman-Nath diffraction was introduced. The conclusion was obtained by deducing the intensity of single slit of the ultrasonic grating firstly, then interference factor for N slits in periodic order was taken into consideration. The method showed not only the periodic property, but the half-angular breadth of principle maximum,the number and position of secondary maximum etc, which could not be deduced by other methods. The applications of these properties obtained in the deduction process were discussed.

关 键 词：声光效应 拉曼-内斯(Raman-Nath)衍射 超声光栅 衍射光强 

分 类 号：O426.3[理学—声学]