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利用锁模Ｎｄ：ＹＡＧ激光及其倍频激光照射漂浮在大气中的Ａｌ２Ｏ３、ＺｎＯ、ＺｒＯ２、１８号玻璃粉等气溶胶粒子，在不同光学参数下对光致大气击穿阈值进行了测量。测量结果表明：空气中含较大粒子（ｄ＞３０μｍ）的光致击穿阈值比含较小粒子（ｄ＜１μｍ）的空气击穿阈值低２～３个数量级；含杂空气的击穿阈值随入射激光束直径的增大而下降，随气溶胶粒子直径的增大而减小，且随气溶胶的成份的不同而不同；光致击穿阈值随波长的减小而增大
Atmospheric atmospheric breakdown thresholds were measured under different optical parameters by using mode-locked Nd: YAG laser and its frequency doubling laser to irradiate aerosol particles such as Al2O3, ZnO, ZrO2 and No. 18 glass powder floating in the atmosphere. The results show that the photoprocessed threshold of air containing larger particles (d> 30μm) is 2 to 3 orders of magnitude lower than that of air containing smaller particles (d <1μm) Decreases with the diameter of the incident laser beam and decreases with the increase of the diameter of the aerosol particles and varies with the composition of the aerosol. The photo-induced breakdown threshold increases with decreasing wavelength