飞秒掺钛蓝宝石激光三倍频理论和实验研究  

Theoretical and experimental studies on third harmonic generation of femtosecond Ti:sapphire laser

作　　者：刘运全[1] 张杰[1] 梁文锡[1] 王兆华[1] 

机构地区：[1]中国科学院物理研究所,北京100080

出　　处：《物理学报》2005年第4期1593-1598,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 3 90 160 ;60 12 85 0 5 );国家重点基础研究专项基金 (批准号 :G19990 75 2 0 6)资助的课题~~

摘　　要：从理论和实验上分别研究了飞秒掺钛蓝宝石激光二倍频和三倍频的非线性频率转换过程 .采用Ⅰ类相位匹配非共线和频方法得到飞秒掺钛蓝宝石激光的三倍频 2 6 0 1nm输出 ,转换效率达 6 4 % ,脉冲宽度为 16 9fs.In this paper, nonlinear frequency conversion of second harmonic and third harmonic of femtosecond Ti: sapphire laser is theoretically and experimentally studied. Noncolinear type I phase matching process is chosen to generate third harmonic of femtosecond Ti:sapphire laser, and we have obtained conversion efficiency of 6.2% at 260 mu output. The pulse duration is about 169 fs. This work will serve as femtosecond ultraviolet source for time-resolved electron microscopy.

关 键 词：三倍频 时间分辨 BBO晶体 飞秒蓝宝石激光 啁啾脉冲放大 

分 类 号：TN24[电子电信—物理电子学]