Electron-Nuclear Dynamics in Molecular Harmonic Generation Driven by a Plasmonic Nonhomogeneous Field
文献类型：期刊论文
| 作者 | Li, Wen-Liang1,2,3; Feng, Li-Qiang2,3; Liu, Hang2,4 |
| 刊名 | ANNALEN DER PHYSIK
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 529期号:8 |
| 关键词 | Molecular high-order harmonic generation plasmon-enhanced nonhomogeneous field ionization channels contributions of harmonics from two-H nuclei minima in harmonic spectra |
| 英文摘要 | Electron (z)-nuclear (R) dynamics in the molecular high-order harmonic generation (MHHG) from H2+ driven by the plasmonic nonhomogeneous field, generated by the surface plasmon polaritons in the bowtie-shaped nanostructure, have been theoretically investigated through solving the two dimensional time-dependent Schrodinger equation with the Non-Bohn-Oppenheimer approximation. It is found that (i) due to the plasmonic enhancement of the laser intensity, the harmonic cutoff can be extended when the spatial position of H2+ is away from the gap center of the nanostructure. However, due to the limit of the gap size, the threshold value of the harmonic cutoff can be obtained at a given position of H2+. (ii) Due to the asymmetric enhancement of the laser intensity in space, the extended higher harmonics are respectively from E(t) > 0 a.u. or E(t) < 0 a.u. for the cases of the positive and the negative spatial position of H2+. As a result, the intensities of the extended higher harmonics are different and can be controlled by changing the carrier-envelope phase and the pulse duration of the laser field. (iii) In the few-cycle pulse duration, the MHHG mainly comes from the multi-photon resonance ionization (MPRI), while as the pulse duration increases, the MPRI, the charge-resonance enhanced ionization (CREI) and even the dissociative ionization (DI) are contributed to the MHHG. Moreover, as the spatial position of H2+ moves, the contributions of the MHHG from the MPRI, the CERI and the DI can be controlled. (iv) The contributions of the MHHG from the two-H nuclei have been investigated and found that when E(t) > 0 a.u., the intensities of the harmonics from the negative-H is higher than those from the positive-H; while when E(t) < 0 a.u., the intensities of the harmonics from the positive-H plays the main role in the MHHG. Moreover, the multi-minima, caused by the two-center interference can also be found. (v) Finally, by superposing a properly selected harmonics, a single isolated attosecond pulse (SIAP) with the full width at half maximum (FWHM) of 34 as can be obtained. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | INTENSE LASER FIELDS ; NONLINEAR OPTICS ; ATTOSECOND PULSE ; ENHANCEMENT ; IONIZATION ; EMISSION ; H-2(+) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000409204100017 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/149955]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Xinjiang Inst Engn, Key Lab Univ Educ, Dept Xinjiang Uygur Autonomous Region New Energy, Urumqi 830091, Peoples R China 2.Liaoning Univ Technol, Coll Sci, Modern Phys Lab, Jinzhou 121001, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 4.Liaoning Univ Technol, Sch Chem & Environm Engn, Lab Mol React Dynam, Jinzhou 121001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wen-Liang,Feng, Li-Qiang,Liu, Hang. Electron-Nuclear Dynamics in Molecular Harmonic Generation Driven by a Plasmonic Nonhomogeneous Field[J]. ANNALEN DER PHYSIK,2017,529(8). |
| APA | Li, Wen-Liang,Feng, Li-Qiang,&Liu, Hang.(2017).Electron-Nuclear Dynamics in Molecular Harmonic Generation Driven by a Plasmonic Nonhomogeneous Field.ANNALEN DER PHYSIK,529(8). |
| MLA | Li, Wen-Liang,et al."Electron-Nuclear Dynamics in Molecular Harmonic Generation Driven by a Plasmonic Nonhomogeneous Field".ANNALEN DER PHYSIK 529.8(2017). |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。