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激光发生系统一般由动力源、气体处理系统,冷却系统和激光发生系统及控制系统组成.激光的光束非常集中,可聚焦在一个很小的区域上,因此单位面积的能量可达10~8W/时~2.这样大的能量足以使很多材料熔化.图1为激光系统示意图.CO_2、N_2和He的混合气体是激光的工作介质.连续的电光激发N_2,N_2又将这个激发能量传给CO_2,使CO_2处于高能级状态.当CO_2从高能级下降时,就发出了激光.He的作用是促进混合气体冷却,也可提高激光的效率.在
Laser generation system generally consists of power source, gas processing system, cooling system and laser generating system and control system.Laser beam is very concentrated, can be focused on a small area, so the energy per unit area up to 10 ~ 8W / When ~ 2. Such a large amount of energy is sufficient to melt many materials.Figure 1 shows a schematic diagram of a laser system.The mixed gas of CO 2, N 2 and He is the working medium of the laser.The continuous electro-optical excitation of N 2 and N 2 transfers the excitation energy to CO 2 , So that CO_2 at a high energy state.When CO_2 from high energy level down, it emits laser.He role is to promote the mixed gas cooling, but also improve the efficiency of the laser in