长脉冲TECO2激光器的调谐特性  

Tunable characteristic of long pulse TE CO_2 laser

作　　者：王云飞[1] 吴谨[1] 刘世明[1] 汪训忠[1] 卢远添[1] 王东蕾[1] 张阔海[1] 

机构地区：[1]中国科学院电子学研究所

出　　处：《红外与激光工程》2008年第2期226-229,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(60678019)

摘　　要：采用光栅谐振腔,对基于Pulser/Sustainer技术的紫外预电离长脉冲TE CO2激光器的调谐特性进行了实验研究。在增益体积为1.17 L,激光混合气体比CO2:N2:He=1:5:19的条件下,比较了刻槽密度分别为80、120、150 line/mm的光栅在不同工作气压和激励电路条件下的激光器调谐特性,其中,120 line/mm的光栅谐振腔可以输出75条激光谱线,4条主要谱线(9R(20)、9P(20)、10R(20)、10P(20))输出能量与采用全反铜镜的非调谐谐振腔激光器输出能量相当。深入实验研究了120 line/mm光栅谐振腔激励电路和工作气压对长脉冲TE CO2激光器调谐特性的影响。A grating tuned long pulse UV-preionized TE CO2 laser excited by Pulser/Sustainer discharge was developed. With an active volume of 1.17 L, gas mixture of CO2：N2：He =1：5：19, the tunable characteristics of three gratings with different grooves of 80,120,150 line/mm were investigated under different gas pressure and discharge voltage. 75 spectral lines were obtained by the grating 120 line/mm , and the output energies of the four spectral lines 9R（20）, 9P（20）, 10R（20） and 10P（20） were comparable to the output energy of conventional resonant cavity with full reflector rather than grating. The tunable characteristics of the laser under different discharge voltages, discharge pulse widths or gas pressures were investigated by the grating of 120 line/mm.

关 键 词：激光技术 长脉冲TECO2激光器 调谐特性 紫外预电离 Pulser/Sustainer技术 

分 类 号：TN248.2[电子电信—物理电子学]