小型化轴流式非链式脉冲氟化氘激光器

采用轴流循环流动方式更新非链式脉冲氟化氘(DF)激光器工作介质,搭建了一台小型化自引发放电DF激光器实验装置,开展了轴流DF激光器输出性能实验研究。单脉冲工作时,在工作气体配比SF6∶D2=10∶1,总气压8 kPa时,实现单脉冲能量800 mJ激光输出,全波半高宽约120 ns,其性能与横流放电非链式脉冲DF激光器相似。重复频率放电时,实现了DF激光器重复频率20 Hz稳定运转,得到的最大输出功率为13.1 W,重频脉冲幅值差优于±5%,并展望了轴流式DF激光器高重频工作的前景。文中提出的轴流式非链式脉冲DF激光器为小型化、工程化中红外光源提供了新的技术途径。

Miniaturized axial flow non-chain pulsed deuterium fluoride laser

A compact non-chain pulse deuterium fluoride (DF) laser renewing the working gas by axial-flow has been established. The characteristics of miniaturized axial flow non-chain pulse DF laser were studied experimentally. When the ratio of working gas SF₆∶D₂ = 10∶1 and total pressure=8 kP, the output energy of DF laser was about 800 mJ and full width at half maximum was about 120 ns at single pulse mode, which was similar to transverse flow DF laser. When working at repetition rate of 20 Hz, a maximum output power of 13.1 W was reached in this laser, whose amplitude difference of laser pulses was less than 5%. Then, the possibility of high repetition rate operation of axial flow DF laser was prospected. An axial flow non-chain pulse DF laser was proposed in this paper, which provides a new technology approach for the miniaturization and engineering application of the mid-infrared laser.