掺钛蓝宝石飞秒激光在氪气中的高次谐波  

High-Order Harmonic Generation in Krypton with Femtosecond Ti∶Sapphire Laser

作　　者：王骐[1] 夏元钦[1] 陈德应[1] 卢兴发[1] 吴小燕[1] 陈建新[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所

出　　处：《光学学报》2001年第5期534-537,共4页Acta Optica Sinica

基　　金：国家科委863高技术项目!激光技术主题;国家自然科学基金! (6 96 880 0 3)资助课题

摘　　要：利用中心波长在 780nm线偏振的掺钛蓝宝石超短脉冲激光 ,在氪气中观察到 40nm～ 110nm第 7～ 19次谐波的软X射线激光辐射 ,把中心波长调至 795nm时再次观察到相同的现象 ,特别是观察到谱线的移动 ,证实观察到的谱线是高次谐波 ,实验中还观察了谱线强度随气压的变化规律。Soft X-ray laser radiation ranged from 40 nm to 110 nm is obtained by the 7th to the 19th order harmonic generation in krypton with femtosecond Ti:sapphire laser operating at 780 nm, and the same phenomena especially the spectral shift is observed after the central wavelength of Ti:sapphire laser is tuned to 795 nm. So the high order harmonic generation is confirmed. The spectrum change pumped by linear polarization laser and the spectrum intensity change with gas pressure are also observed.

关 键 词：掺钛蓝宝石超短脉冲激光 氪气 高次谐波 X射线激光辐射 谱线强度 非线性光谱 

分 类 号：O437[机械工程—光学工程] TN248[理学—光学]