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报道了射频激励扩散型冷却板条波导 Ｃ Ｏ２ 激光器远场呈空间窄单斑分布的模式特性及其模式演化过程的实验现象，实验研究了远场出现压窄单斑时的模式结构．通过实验研究发现实验中所获得的近场呈多点分布和远场呈空间窄单峰分布的板条波导激光器输出模式是一种新的单模频振荡模式．
This paper reports the experimental characteristics of the mode characteristic and the evolution of mode evolution in the far field of RF excited diffusion-type cooled slab waveguide C O2 laser in the far field. The mode structure of the squeezed narrow band single spot is experimentally studied. Experimental results show that the slab waveguide laser output mode with near-field multi-point distribution and narrow spatial distribution in far-field is a new mode of single-mode oscillation.