飞秒激光在氦气中的高次谐波  

High-Order Harmonic Generation in He Driven by Ti∶Sapphire Femtosecond Laser

作　　者：夏元钦[1] 陈建新[1] 姚琴[1] 王骐[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所可调谐激光技术国家级重点实验室,哈尔滨150001

出　　处：《光学学报》2002年第9期1035-1038,共4页Acta Optica Sinica

基　　金：国家科委 86 3高科技项目;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 795nm的线偏振的钛宝石超短脉冲激光除为抽运源 ,在氦气中观察到 40nm～ 16 0nm第 5～ 17次谐波的软X射线激光辐射 ,着重研究了高次谐波谱线强度随气压的变化规律 ,发现高次谐波谱线强度随充气气压的增加而增强 ,实验中考虑到如果充气气压过高 ,探测仪器可能受到损害 。The 5th～7th high order harmonics soft X-ray radiation with He in static gas target ranging from 40 nm to 160 nm driven by linearly-polarized 105 femtosecond Ti∶sapphire laser at 795 nm are observed. The change of high-order harmonic intensity vs gas pressures is studied. The high-order harmonic intensity increases with gas pressures, but the optimal gas pressures have not been obtained considering the possible destruction to the detector under higher gas pressures.

关 键 词：飞秒激光 超短脉冲激光 氦气 高次谐波 X射线激光辐射 钛宝石激光系统 相互作用 

分 类 号：O437[机械工程—光学工程] TN248.1[理学—光学]