飞秒强激光在充气毛细管中产生三次谐波的效率  

Efficiency of the third-order harmonic in gas-filled capillary driven by fs laser pulses

作　　者：陈宝振[1] 黄祖洽[2] 

机构地区：[1]北京师范大学射线束技术与材料改性教育部重点实验室,北京100875 [2]北京师范大学低能核物理研究所,北京100875

出　　处：《物理学报》2005年第1期113-116,共4页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :90 10 3 0 2 5 );教育部博士点基金(批准号 :DPF2 0 0 2 0 0 2 70 0 6)资助的课题~~

摘　　要：利用描写飞秒强激光在充气毛细管中产生三次谐波的一个理论模型讨论了三次谐波产生的信号_压强曲线 .结果发现 :在毛细管参量和激光参量确定的条件下 ,三次谐波效率受管内气压 ,三次谐波模式 ,走离效应 (walk_off)和相调制效应的影响 .同时 ,发现 。Using a theoretical model for generation of the third-order harmonic in a gas-filled capillary driven by fs laser pulses, the signal-pressure curves of the third-order harmonic generation in a gas-filled capillary driven by fs laser pulses are discussed. It is found that when the parameters of the capillary and laser pulse are given, the generation efficiency of the third harmonic is influenced by the waveguide modes of the third harmonic, the pressure, the walk-off and the phase modulation, and that the theoretical value of the generation efficiency of the third harmonic, which is given in this paper, approaches the experimental one.

关 键 词：三次谐波 毛细管 参量 充气 强激光 飞秒 调制效应 信号 理论模型 压强 

分 类 号：TN24[电子电信—物理电子学]