1.5kW新型长脉冲TE CO_2激光器  

Novel Long Pulse TE CO_2 Laser with 1.5 kW Average Output Power

作　　者：吴谨[1] 卢远添[1] 王东蕾[1] 刘世明[1] 张阔海[1] 

机构地区：[1]中国科学院电子学研究所,北京100190

出　　处：《中国激光》2010年第7期1697-1703,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(60678019)资助课题

摘　　要：研究了一台增益体积为2.48 L,采用pulser/sustainer放电技术激励的高功率长脉冲紫外预电离TE CO2激光器的运转特性。激光器采用普通平凹稳定腔输出或光栅谐振腔调谐输出。在20～40 kPa气压范围,10～50μs放电脉冲宽度下,均获得均匀稳定的大体积辉光放电和大能量长脉冲激光输出。给出了激光器在不同脉冲宽度、不同气压下的典型放电电压、放电电流波形和详细的激光输出脉冲能量及电光转换效率数据;也给出了采用光栅谐振腔调谐输出时4条主要激光跃迁谱线的输出激光脉冲波形。工作在非调谐谐振腔和激光混合气气压30 kPa时,激光器以50.1μs放电脉冲宽度工作,单脉冲输出激光能量11.1 J,相应脉冲功率达220 kW;以31.6μs放电脉冲宽度150 Hz高重复频率工作输出平均功率达1.52 kW,相应平均脉冲能量10.0 J,脉冲功率超过300 kW。The performance of a high power long-pulse ultraviolet-preionized TE CO2 laser with an active volume of 2.48 L utilizing pulser/sustainer discharge technique is investigated in detail.The laser head consists of a plano-concave resonator for non-tunable operation or a grating resonator for tunable operation.Stable volume discharge and high laser pulse energy output are obtained under various mixture pressures of 20～40 kPa and various discharge lengths of 10～50 μs.Typical laser discharge voltage/current waveforms and detailed data of laser output pulse energy and electro-optical conversion efficiency under various discharge lengths and various mixture pressures are given.The laser pulse profiles of the four main transition lines are demonstrated as operated with a grating resonator.When operated under a non-tunable resonator and 30 kPa mixture pressure,the laser generates 11.1 J pulse energy at 50.1 μs discharge length,corresponding a laser pulse power of 220 kW;1.52 kW average power at 31.6 μs discharge length and 150 Hz high repetition rate,resulting in an average pulse energy of 10.0 J and an average pulse power of over 300 kW.

关 键 词：激光器 长脉冲TECO2激光器 pulser/sustainer技术 光栅谐振腔 高重复频率 

分 类 号：TN248.22[电子电信—物理电子学]