A New Discharge Scheme of a Prepulse Plus Two Main Pulses for Capillary-Discharge Soft-X-Ray Laser  

作　　者：栾伯晗 赵永蓬 王骐 程元丽 谢耀 

机构地区：[1]National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001

出　　处：《Chinese Physics Letters》2007年第6期1580-1582,共3页中国物理快报（英文版）

基　　金：Supported by the National High-Technology Research and Development Programme of China under Grant No 863-804-7- 10, the National Natural Science Foundation of China under Grant No 60608007, the Programme of Excellent Team in Harbin Institute of Technology, and the Development Programme for 0utstanding Young Teachers in Harbin Institute of Technology （HITQNJS.2006.023）.

摘　　要：Reducing the capillary-discharge current is one way of possibly decreasing the pumping power requirement. We examine the influence of various discharge currents on laser intensity and determine the suitable pre-discharge condition for a 46.9-nm discharge-pumped Ne-like Ar soft-x-ray amplifier. The experimental results show that a high additional pre-pulse current at amplitude of several kA and with a very short duration of several tens of nanosecond can effectively decrease the amplitude of the main discharge current at the lasing time. We propose a new discharge scheme of a pre^pulse plus two main pulses which appears to significantly decrease the requirement for discharge current. This in turn may decrease the pumping power requirement for the capillary discharge laser and can greatly increase laser efficiency.Reducing the capillary-discharge current is one way of possibly decreasing the pumping power requirement. We examine the influence of various discharge currents on laser intensity and determine the suitable pre-discharge condition for a 46.9-nm discharge-pumped Ne-like Ar soft-x-ray amplifier. The experimental results show that a high additional pre-pulse current at amplitude of several kA and with a very short duration of several tens of nanosecond can effectively decrease the amplitude of the main discharge current at the lasing time. We propose a new discharge scheme of a pre^pulse plus two main pulses which appears to significantly decrease the requirement for discharge current. This in turn may decrease the pumping power requirement for the capillary discharge laser and can greatly increase laser efficiency.

分 类 号：O43[机械工程—光学工程]