衍射光偏转角计算方法的探讨

Research on the Method for the Calculation of Deflection Angle of Diffraction

光通过受到超声波扰动的介质时会导致光传播方向的偏转和衍射光强的调制,即声光效应.利用声光效应可以方便而有效控制光束的传播方向,而衍射光相对入射光的偏转角是一个很重要的物理量.就其计算方法进行探讨,推导了偏转角φ的计算公式,并对计算结果进行误差分析.

When light passes through a medium interfered by ultrasonic, its propagation direction will be deflected and intensity of diffraction be modulated. This phenomenon is called acousto-optic effect and can be used to effectively control the propagation direction of a beam of light. The deflection angle between diffraction light and incident light is a very important physical quantity. The method for its calculation was discussed and the error analysis was conducted for the calculated results.