摘要
为获取得高能脉冲中红外激光,对两种形式的电引发非链式脉冲DF化学激光器进行了研究。通过研究紫外预电离自持放电非链式脉冲DF化学激光器的输出特性,确定了最佳气压比,实现了350 mJ的DF激光脉冲输出,激光峰值功率为1.4 MW,激光能量比输出达35 J/l.101.3 kPa,电光转换效率约为1.6%;为突破预电离条件的限制,研究了非链式脉冲DF化学激光器的自引发体放电特性,通过采用针-盘电极对放电来模拟单通道放电的过程,利用非均匀场粗糙表面阴极,在注入能量密度高达200 J/l时实现了无预电离的稳定体放电。实验结果表明,采用自引发体放电技术有望实现更高能量的中红外激光输出。
To obtain high power mid-infrared laser,two types of electric-discharge DF lasers are discribed.The output performance of UV preionized non-chain pulsed DF laser is investigated,and the optimum mixing ratio is determinated.The experimental results show that the laser pulse energy is up to 350 mJ with electric efficiency about 1.6%,the peak power is 1.4 MW,and the specific laser energy is 35 J/l·101.3 kPa.In order to break the preionization limitation,the SIVD′s character of non-chain pulsed DF laser is dicussed carefully.The pin-plate electrodes discharging is used to stimulate a singal channel dicharging.With the condition of 200 J/l energy deposition,a volume discharge is formed in non-uniform electric-field rough cathode and even anode without preionization.The experimental results indicate that the form of SIVD is promising for creation of high energy DF laser.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2010年第2期172-174,共3页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60708005)
国家"973"计划资助项目(5132802.2.6)
