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LaB6在低压强氮气和氦气中的放电特性
引用本文:侯静,肖瑞,姜宗福,舒柏宏,陈金宝,刘泽金.LaB6在低压强氮气和氦气中的放电特性[J].强激光与粒子束,2006,18(10):0-1588.
作者姓名:侯静  肖瑞  姜宗福  舒柏宏  陈金宝  刘泽金
作者单位:1.电子科技大学 光电信息学院, 成都 61 0054
基金项目:国家高技术研究发展计划(863计划)
摘    要:研究了LaB6在1~10 Pa氮气和氦气中的直流和脉冲放电特性以及放电过程对电极的影响。结果表明,电极直径为5 mm的LaB6氦气放电管在脉冲工作状态下可以长期稳定放电。在脉冲电压为2.2 kV、脉冲宽度10 ms、频率13.3 Hz下,脉冲峰值放电电流超过120 A。氦气放电管在放电过程中,阴极表面有离子的清洗和活化作用,可以使电极的表面逸出功降低,提高放电管的发射能力和稳定性。LaB6作为气体放电电极具有寿命长、延迟时间短、放电电流大等优点,可用于重复强流脉冲气体放电的高压高速开关器件。

关 键 词:LaB6    气体放电    氦气放电管    高压脉冲开关
文章编号:1001-4322(2006)10-1585-04
收稿时间:2006-04-03
修稿时间:2006-07-13

Coherent beam combination of three ytterbium fiber amplifiers
HOU Jing,XIAO Rui,JIANG Zong-Fu,SHU Bo-hong,CHENG Jin-Bao,LIU Ze-jin.Coherent beam combination of three ytterbium fiber amplifiers[J].High Power Laser and Particle Beams,2006,18(10):0-1588.
Authors:HOU Jing  XIAO Rui  JIANG Zong-Fu  SHU Bo-hong  CHENG Jin-Bao  LIU Ze-jin
Affiliation:1.School of Opto-electronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China
Abstract:Coherent beam combination of fiber laser array is an important technology in realizing high power fiber laser system. In this paper, master oscillator-power amplifier scheme is used to realize phase control of three ytterbium fiber amplifiers. In the experiments, the output power of each ytterbium fiber amplifier is not less than 1 W and the total output power of the three amplifiers is not less than 3 W. Phases are controlled by LiNbO­3 phase modulator. The heterodyne detection control system works at 40 MHz and the control precision is l/20. The fibers are polarizedly maintained. The experimental results of both two and three fiber amplifiers are given. When the control loop is off, the far field interference pattern is dynamic and blurred. While the control loop is on, the far field
Keywords:Fiber laser array  Coherent beam combination  Phase detection and correction  Fiber amplifier  MOPA
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