利用声光效应测量波长的设计与研究

提出了利用声光效应原理来测量激光波长的方案.基于声光Bragg衍射效应原理，利用比较法，以He-Ne激光波长作为基准波长，推导出待测激光波长与与衍射光斑间距的关系式.据此设计了未知激光的波长的方案，并对两种波长的激光波长进行了测量，结果表明测量值和理论值之间的误差小.

Studying of the design and implementation of wavelength measurement based on acousto-optic effect

In this work， we proposed a design to measure the laser wavelength based on the theory of acousto-optic effect. According to the acousto-optic Bragg diffraction effect， the relationship between the laser wavelength and diffraction spot spacing was derived by using the comparison method and taking the He-Ne laser wavelength as the standard wavelength. According to the above relationship， the method of measuring the unknown laser wavelength was proposed， and the wavelengths of two different lasers were measured. The results show that the deviation between the measured value and theoretical vale is small.