调制因子对拉曼-纳斯声光衍射的影响  

Effects of Modulation Factor on Raman-Nath Acoustooptic Diffraction Intensity Distribution

作　　者：周亚梅[1] 周金运[1] 雷亮[1] 冉坐[1] 邓亚飞[1] 林清华[1] 

机构地区：[1]广东工业大学物理与光电工程学院,广东广州510006

出　　处：《压电与声光》2013年第5期640-642,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(60977029;61107029);广东工业大学重大项目培育专项基金资助项目(092010)

摘　　要：通过建立拉曼-纳斯衍射模型,运用数值模拟法,获得了拉曼-纳斯声光衍射的各级光强分布规律。表明调制因子对拉曼-纳斯衍射现象的产生有重大作用,且随着调制因子的增加,各衍射级的光强相对系数变化明显,且各级衍射光强变得匀滑。同时进行了相应的实验测试,实验结果与理论分析一致。The light intensity distribution of Raman-Nath diffraction at all levels is obtained by establishing Ra- man-Nath-diffraction model and using numerical simulation method. The simulation results indicates that the modu- lation factor v has an important effect on Raman-Nath diffraction phenomenon, and the relative coefficient of light intensity at all levels is clearly changed and become smoothing with the increase of modulation factor. Simultaneous- ly the corresponding experiment is carried out, and the experimental results are consistent with theoretical analysis.

关 键 词：声光作用 拉曼-纳斯衍射 衍射光强 调制因子 声光器件 

分 类 号：O426.3[理学—声学]