100 J侧面滑闪预电离TE CO2激光器

提出了一种新型侧面滑闪放电技术,为TE CO2激光器均匀放电提供高效、均匀的紫外预电离。采用这种技术,成功实现5.5 cm电极间距的高气压CO2均匀放电,放电截面达27.5 cm2。放电体积为5.5 cm×5 cm×90 cm的单元模块采用V(CO2)∶V(N2)∶V(He)=1∶1∶4的混合气体在60 kPa的气压下,获得了53 J的激光脉冲输出,激光比输出能量达3.46×10-4J/(L.Pa)。采用简单的谐振腔,利用两个相同的单元模块串联实现了103 J的激光输出。实验表明双模块器件存在很强的激光脉冲能量增强效应,双模块串联输出的激光能量比单模块激光能量的两倍还大15%。

100 J TE CO2 Laser with Side-Sliding Discharge Preionization

The development of a new side-sliding discharge scheme can provide efficient uniform ultraviolet (UV) preionization for transverse excitation (TE) CO2 laser. The use of the scheme has resulted in the successful generation of CO2 laser discharges between electrodes separated by 5.5 cm, total cross section is 27.5 cm2. The laser is modular in construction, under the condition of V(CO2)∶V(N2)∶V(He)=1∶1∶4 mixtures and 60 kPa gas pressure, a modular with active discharge volume 5.5 cm×5 cm×90 cm has yielded output energy of 53 J, the specific output energy ratio is 3.46×10-4 J/(L·Pa). When a pair of discharge modulars are employed in series in a simple oscillator configuration, output energy of 103 J is yielded. An effect of laser energy enhancement occurs in dual-modular, the output energy of dual-modular is 15% higher than twifold energy of single modular.