【摘要】 通过简单的理论计算及与平面透射光栅的对比阐述声光调制器的工作原理,并给出一幅比较清楚的物理图像,以加深学生对实验的理解和知识面的拓展。更多还原

【Abstract】 The working principle of photoacoustic modulation is described through a theoretical analysis and by the comparison with transmitting grating. A clearer physical picture was obtained for the process of the photo -beating.Therefore students can understand the experiment thoroughly,and their knowledge can be broadened extensively.更多还原