首页 > 论文 > 光学学报 > 38卷 > 7期(pp:702002--1)

强激光场作用下He原子低激发态的制备和控制

Control and Preparation of Low Excited States of He Atoms Interacted with Strong Laser Field

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

基于精确的角动量依赖的模型势,提出了利用激光脉冲驱动He原子产生布居数可控的基态与较低激发态的制备方案。通过数值求解三维含时薛定谔方程得到了相应的波长、峰值强度和脉宽激光参数。数值模拟结果表明,对于2s、2p、3p激发态,激光脉冲结束时的布居数均可达到100%。而对于3s和3d态,由于它们之间的能级差较小,且存在一定的电离几率,布居数最高仅到80%和86%。

Abstract

A method for preparing the ground and low excited states with controllable populations of He atoms driven by a laser pulse is proposed based on an accurate angular-momentum-dependent model potential. The corresponding laser parameters of wavelength, peak intensity and pulse duration are obtained by the numerical solution of the three-dimensional time-dependent Schrdinger equation. The numerical simulation results show that for the 2s, 2p and 3p states, the populations at the end of laser pulse can all reach 100%, while for the states of 3s and 3d, the maximum populations are only 80% and 86%, respectively, because of their very close energy levels and small ionization probabilities.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:O437

DOI:10.3788/aos201838.0702002

所属栏目:原子与分子物理

基金项目:国家自然科学基金(11465016, 11764038, 11564033)

收稿日期:2018-01-25

修改稿日期:2018-03-06

网络出版日期:--

作者单位    点击查看

朱斌:西北师范大学物理与电子工程学院, 甘肃 兰州 730070
王国利:西北师范大学物理与电子工程学院, 甘肃 兰州 730070
李小勇:西北民族大学实验中心, 甘肃 兰州 730030
周效信:西北师范大学物理与电子工程学院, 甘肃 兰州 730070

联系人作者:王国利(wanggl@nwnu.edu.cn)

备注:朱斌(1992-),男,硕士研究生,主要从事强场物理方面的研究。E-mail: 1172350241@qq.com

【1】Krausz F, Ivanov M. Attosecond physics[J]. Reviews of Modern Physics, 2009, 81(1): 163-234.

【2】Corkum P B. Plasma perspective on strong field multiphoton ionization[J]. Physical Review Letters, 1993, 71(13): 1994-1997.

【3】Xu Z Z, Zhang Z Q, Li X X, et al. Coherent soft X-ray radiation obtained by high-order harmonic generation[J]. Acta Optica Sinica, 1997, 17(7): 957-958.
徐至展, 张正泉, 李学信, 等. 利用超快强光场产生的高次谐波获得相干软X射线辐射[J]. 光学学报, 1997, 17(7): 957-958.

【4】Zhang L Y, Dai Y, Zheng Y H, et al. Bright high-order harmonic generation via multi-jet arrays[J]. Chinese Journal of Lasers, 2017, 44(10): 1001002.
张路遥, 戴晔, 郑颖辉, 等. 采用多喷嘴阵列产生高亮度高次谐波[J]. 中国激光, 2017, 44(10): 1001002.

【5】Itatani J, Levesque J, Zeidler D, et al. Tomographic imaging of molecular orbitals[J]. Nature, 2004, 432(7019): 867-871.

【6】Miao J W, Ishikawa T, Robinson I K, et al. Beyond crystallography: Diffractive imaging using coherent X-ray light sources[J]. Science, 2015, 348(6234): 530-535.

【7】Haworth C A, Chipperfield L E, Robinson J S, et al. Half-cycle cutoffs in harmonic spectra and robust carrier-envelope phase retrieval[J]. Nature Physics, 2007, 3: 52-57.

【8】Chang Z, Corkum P B, Leone S R. Attosecond optics and technology: Progress to date and future prospects[J]. Journal of the Optical Society of America B, 2016, 33(6): 1081-1097.

【9】Calegari F, Sansone G, Stagira S, et al. Advances in attosecond science[J]. Journal of Physics B: Atomic, Molecular and Optical Physics, 2016, 49(6): 062001.

【10】Krausz F. The birth of attosecond physics and its coming of age[J]. Physica Scripta, 2016, 91: 063011.

【11】Xu X H, Xia C L, Guo Z W, et al. Study on the spatial distribution of high-order harmonic emission in few-cycle chirped laser pulse and the isolated attosecond pulse generation[J]. Chinese Journal of Lasers, 2018, 45(6): 0601007.
徐小虎, 夏昌龙, 郭志伟, 等. 啁啾场调控的高次谐波空间分布及孤立阿妙脉冲产生研究[J]. 中国激光, 2018, 45(6): 0601007.

【12】Li X X, Xu Z Z, Zhang W Q. The effect of initial population on the generation of high order harmonics[J]. Chinese Journal of Lasers, 1997, 24(12): 1124-1128.
李学信, 徐至展, 张文琦. 初始粒子数布居数对高次谐波的影响[J]. 中国激光, 1997, 24(12): 1124-1128.

【13】Zhai Z, Chen J, Yan Z C, et al. Direct probing of electronic density distribution of a Rydberg state by high-order harmonic generation in a few-cycle laser pulse[J]. Physical Review A, 2010, 82(4): 043422.

【14】Zhai Z, Zhu Q R, Chen J, et al. High-order harmonic generation with Rydberg atoms by using an intense few-cycle pulse[J]. Physical Review A, 2011, 83(4): 043409.

【15】Yang Y J, Chen J G, Chi F P, et al. Ultrahigh harmonic generation from an atom with superposition of ground state and highly excited states[J]. Chinese Physics Letters, 2007, 24(6): 1537-1540.

【16】Chacón A, Ciappina M F, Conde A P. High-order harmonic generation enhanced by coherent population return[J]. The European Physical Journal D, 2015, 69: 133.

【17】Yuan X L, Wei P F, Liu C D, et al. Enhanced high-order harmonic generation from excited argon[J]. Applied Physics Letters, 2015, 107(4): 041110.

【18】Bleda E A, Yavuz I, Altun, et al. High-order-harmonic generation from Rydberg states at fixed Keldysh parameter[J]. Physical Review A, 2013, 88(4): 043417.

【19】Faria C F de M, Drr M, Sandner W. Importance of excited bound states in harmonic generation[J]. Physical Review A, 1998, 58(4): 2990-2999.

【20】Mohebbi M. Controlling the ionization and recombination rates of an electron in preexcited ions to generate an intense isolated sub-4-as pulse in a multicycle regime[J]. Physical Review A, 2015, 91(2): 023835.

【21】Chini M, Wang X W, Cheng Y, et al. Coherent phase-matched VUV generation by field-controlled bound states[J]. Nature Photonics, 2014, 8: 437-441.

【22】Xiong W H, Jin J Z, Peng L Y, et al. Numerical observation of two sets of low-order harmonics near the ionization threshold[J]. Physical Review A, 2017, 96(2): 023418.

【23】Beaulieu S, Camp S, Descamps D, et al. Role of excited states in high-order harmonic generation[J]. Physical Review Letters, 2016, 117(20): 203001.

【24】Li P C, Laughlin C, Chu S I. Generation of isolated sub-20-attosecond pulses from He atoms by two-color midinfrared laser fields[J]. Physical Review A, 2014, 89(2): 023431.

【25】Tong X M, Chu S I. Theoretical study of multiple high-order harmonic generation by intense ultrashort pulsed laser fields: A new generalized pseudospectral time-dependent method[J]. Chemical Physics, 1997, 217(2): 119-130.

【26】Hermann M R, Fleck J A, Jr. Split-operator spectral method for solving the time-dependent Schrdinger equation in spherical coordinates[J]. Physical Review A, 1988, 38(12): 6000-6012.

【27】NIST. Atomic Spectra Database[DB/OL]. (2017-11-15)[2017-12-15]. http://physics.nist.gov/asd.

引用该论文

Zhu bin,Wang Guoli,Li Xiaoyong,Zhou Xiaoxin. Control and Preparation of Low Excited States of He Atoms Interacted with Strong Laser Field[J]. Acta Optica Sinica, 2018, 38(7): 0702002

朱斌,王国利,李小勇,周效信. 强激光场作用下He原子低激发态的制备和控制[J]. 光学学报, 2018, 38(7): 0702002

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF