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设计了一种紧凑型放电引发非链式氟化氘(DF)脉冲激光器,引入基于闸流管的一级磁脉冲压缩高压快上升沿放电引发回路,形成39.5kV、100ns上升沿高压快脉冲。紧凑型张氏放电电极结合紫外(UV)火花预电离,在电极间距为30mm激活区形成均匀辉光放电,注入能量密度达190J/L。激光谐振腔选用平平腔结构,激光工作气体采用SF6和D2,其气体配比优化为10:3,此时获得最大能量输出为877mJ,电光转换效率为1.9%,脉宽约200ns,光斑为30mm×9mm。
A compact discharge-induced deuterium-free deuterium fluoride (DF) pulsed laser was designed to introduce a thyristor-based first-order magnetic pulse compression high-voltage fast rising edge discharge triggering loop to form a 39.5kV, 100ns rising high-voltage fast pulse. A compact Zhang’s discharge electrode was pre-ionized with UV spark to form a uniform glow discharge at an active area of 30mm with an energy density of 190 J / L. The laser resonator is of flattened cavity structure. The working gas of the laser is SF6 and D2. The gas ratio is optimized to 10: 3, the maximum energy output is 877mJ, the electro-optical conversion efficiency is 1.9%, the pulse width is about 200ns and the light spot is 30mm × 9mm.