放电电极对毛细管放电软X光激光的影响  

Influence of the Electrode on Capillary Discharge Soft-X-Ray Laser

作　　者：谢耀[1] 赵永蓬[1] 王骐[1] 栾伯晗[1] 刘涛[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150080

出　　处：《中国激光》2009年第4期819-822,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60608007);国家863计划(2007AA804705);哈尔滨工业大学优秀青年教师培养计划(HITQNJS.2006.23);哈尔滨工业大学优秀团队支持计划资助项目

摘　　要：自软X光激光发现以来,实现低激发阈、台式软X光激光一直是一个十分重要的研究方向。利用毛细管放电激励产生软X光激光,是实现台式软X光激光的主要方案之一。实验采用20 cm长的毛细管,利用X射线二极管(XRD)探测了毛细管放电抽运软X光46.9 nm激光输出。研究表明,放电电极的材料并不是影响激光输出质量的决定性因素。但考虑到电极元素的飞溅,在长时间的实验研究中,选择钼电极更为有利。电极形状在放电过程中只影响预脉冲的导通情况,而对激光影响并不大。在更长毛细管的实验中,选择锥状端面的电极将有利于预脉冲的导通,以便获得激光输出。Since the first soft-X-ray was achieved, to realize the low excited threshold and table-top soft-X-ray laser is a significant research. Capillary discharge soft-X-ray laser is one of the crucial quomodo to realize table-top soft-X- ray laser. The capillary discharge 46.9nm soft-X-ray laser has been detected by X-ray diffraction diode（XRD）. The experimental results indicate that the influence of the material of the electrode on capillary discharge soft-X-ray laser is not the critical factor. Considering the sputtering of the element, choosing the electrode made of molybdenum is advantageous. The shape of the electrode mainly influences on the conduction of the pre-current pulse but not on laser, and it is easier for the pre-current pulse to conduct in longer capillary by choosing the pyramidal electrode.

关 键 词：X射线光学 软X光激光 毛细管放电 放电电极 Blumlein传输线 

分 类 号：TN248.6[电子电信—物理电子学]