测量相关公式，验证了基于声光布拉格衍射测量待测光波波长方案的可行性. 并进行了实验方案的设计，实现了对不同光波

的波长测量，自制出可用于实验教学的实验仪器.本波长测量方案具有实验操作步骤简单、实验装置造价低廉、受环境因素干

扰较小等优势，同时可用于声光布拉格衍射的演示教学，直观的展示出布拉格衍射不同级数的衍射效率.

relation between wavelength of the acoustic wave and the wavelength of the monochromatic wave are deduced.

Then the unknown monochromatic wavelength is measured by adjusting the acoustic frequency. The scheme is based

on Bragg diffraction as the theoretical basis. In contrast to different technologies，we use acousto-optic devices with

the most stable and large acousto-optic factor，and solved the environmental factors on the impact of such experiments

is too large，cumbersome experimental steps and other issues successful. This program can directly adjust the

acoustic frequency to achieve a variety of monochromatic wavelength measurement，and wide the measurement range

of the wavelength of monochromatic.