紫外示波纸用于列阵相机测光束角分布

Ultraviolet Oscilloscope Paper Used in Array Camera to Record the Far Field of Laser Beam

用列阵相机测１．０６μｍ波长激光束远场角分布，采用黑白胶片感光，列阵点不易读准，且受显影条件的影响，而采用紫外示波纸就可避免这些缺点，两者测量光束角分布的结果吻合。用紫外示波纸测量光束７０％能量的光束发散角相对误差起伏最大为１０％。

For recording the far field of 1.06 μm wavelength laser beam with an array camera, and using film to record the array spot diameter, it is difficult to read the spots diameter exactly and also affected by the developing condition. However, there are no such problems if the ultraviolet oscilloscope (UO) paper is used instead of the film. Using the UO paper to record the array spot diameter, the measured beam divergence (at 70% energy) fluctuation is less than 10%, and the energy (at mean divergence) fluctuation is within 5%.