主开关改进对毛细管放电软X光激光的影响  

Impact of Modified Main-Switch on Capillary Discharge Soft X-ray Laser

作　　者：张兴强[1] 程元丽[1] 王骐[1] 赵永蓬[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江哈尔滨150001

出　　处：《中国激光》2009年第2期324-327,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60038010);国家863计划(863-8047-10);哈尔滨工业大学优秀团队支持计划资助项目

摘　　要：毛细管放电软X光激光方案是实现小型、台式、高效、经济适用的X光激光器的新途径。为获得稳定而较大的激光能量,对激光输出所依赖的众多参数进行优化是实验研究不可或缺的步骤。主开关结构直接决定着主脉冲电流的波形,继而影响激光输出。经过对三种主开关结构进行实验研究,结果表明:改进的并联金属棒支座圆环小圆盘型主开关的导通电感比较合适,可产生较好的主脉冲电流。主脉冲电流和激光输出的平均值比改进前分别提高了4%和31%,而出光率比最初的金属圆筒支座圆环-大圆盘型主开关提高了60%。改进的主开关在获得稳定而较大输出能量的情况下仍然继承了金属圆筒支座圆环-小圆盘型主开关的高耐压性,同时保持了激光束较小的脉宽。The capillary discharge soft X-ray laser scheme is a new way for generating small-size, table-top, highefficient and cost-effective X-ray laser. In order to obtain stable and high laser energy, it is necessary to optimize parameters related with laser output. The configuration of the main-switch directly determines the waveform of the main current which in turn influences laser output. By means of the study of three types of main-switch, it shows that the circuit inductance of the modified ring-small disk main-switch supported by parallel metal bars is feasible to achieve appropriate main current. It is also concluded that the average main current and average laser energy are increase by 4% and 31% respectively than those before modification, while the lasing probability is inereaseed by 60% than that of the original ring-large disk main-switch supported by circular metal pipe. Furthermore, under condition of larger and stable laser energy output, the modified main-switch still inherits the high-voltage resistance of ring-small disk main-switch supported by circular metal pipe, and keeps laser beam with narrow pulse width.

关 键 词：激光技术 主开关 毛细管放电 软X光激光 出光率 

分 类 号：TN248[电子电信—物理电子学]