介绍了一种小型化火花预电离高能输出横向激励大气压(TEA)CO2激光器。激光器的主放电电极采取紧凑式Ernst电极,加大了电极间距,增大了激活区体积,从而提高了输出能量。激光器采用火花阵列预电离方式,有利于主放电均匀、稳定。低重复频率下,自由振荡情况下的输出能量可达到2J。使用单片机控制的光栅调谐后,10P(20)谱线多模输出能量可达到1J,10 P(20)谱线输出脉冲宽度为100ns。 A miniaturized spark pre-ionization high energy output lateral excitation atmospheric pressure (TEA) CO2 laser is introduced. The main discharge electrode of the laser adopts the compact Ernst electrode, which increases the electrode spacing and increases the volume of the active region, thereby increasing the output energy. The laser adopts spark array pre-ionization mode, which is beneficial to the main discharge uniform and stable. Low repetition rate, the output energy of free oscillation up to 2J. The multi-mode output power of the 10P (20) line can reach 1J after the grating controlled by the single chip is tuned, and the output pulse width of the 10P (20) line is 100ns.