摘要
报告了作为高亮度电子注入器的钠钾锑光电阴极在YAG激光(λ=1.06μm,脉冲宽度为50ps)作用下的亚阈值光电发射,其为2光子发射。研究了阴极的光电发射限制问题,从实验上证明在激光能量比较大极间电压比较低时,阴极受空间电荷限制。
We report the study of Na_2KSb photocathode as high brillance electronicinjector.We have measured the properties of the multiphoton photoelectron emis-sion with ultra short pulse laser (the wavelength is 1.06μm,the width of a pulse is50ps).It was two photons effect.We have also studied photoelectron emission lim-it.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1996年第1期96-102,共7页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金
关键词
钠钾锑阴极
电子注入器
光电阴极
光电发射特性
Na_2KSb photocathode
ultra short laser pulse
photoelectron emission of subthreshold
space charge limit
