Momentum distributions of symmetric (H2+) and asymmetric (HeH2+) molecular ions in a circularly polarized laser field under different ionization mechanisms

doi:10.1088/1674-1056/ad7c2b

中国物理B ›› 2024, Vol. 33 ›› Issue (12): 123401-123401.doi: 10.1088/1674-1056/ad7c2b

Momentum distributions of symmetric (H₂⁺) and asymmetric (HeH²⁺) molecular ions in a circularly polarized laser field under different ionization mechanisms

Xin-Yu Hao(郝欣宇), Shu-Juan Yan(闫淑娟), Ying Guo(郭颖), and Jing Guo(郭静)†

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

收稿日期:2024-05-13 修回日期:2024-09-11 接受日期:2024-09-18 发布日期:2024-11-12
通讯作者: Jing Guo E-mail:gjing@jlu.edu.cn
基金资助:
Project supported by the Natural Science Foundation of Jilin Province (Grant No. 20220101010JC) and the National Natural Science Foundation of China (Grant No. 12074146).

Momentum distributions of symmetric (H₂⁺) and asymmetric (HeH²⁺) molecular ions in a circularly polarized laser field under different ionization mechanisms

Xin-Yu Hao(郝欣宇), Shu-Juan Yan(闫淑娟), Ying Guo(郭颖), and Jing Guo(郭静)†

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

Received:2024-05-13 Revised:2024-09-11 Accepted:2024-09-18 Published:2024-11-12
Contact: Jing Guo E-mail:gjing@jlu.edu.cn
Supported by:
Project supported by the Natural Science Foundation of Jilin Province (Grant No. 20220101010JC) and the National Natural Science Foundation of China (Grant No. 12074146).

摘要/Abstract

摘要： By numerically solving the two-dimensional (2D) time-dependent Schrödinger equation (TDSE), we present photoelectron momentum distributions (PMDs) and photoelectron angular distributions (PADs) of symmetric (${{\rm H}_{2}^{+}}$) and asymmetric (${{\rm HeH}^{2+}}$) molecular ions in circularly polarized (CP) laser pulses. By adjusting the laser wavelength, two circumstances of resonance excitation and direct ionization were considered. The ionization mechanism of the resonance excitation was mainly investigated. The results show that the PMDs of ${{\rm H}_{2}^{+}}$ and ${{\rm HeH}^{2+}}$ in the $y$-direction gradually increase with increasing intensity, and the number of PMDs lobes is in good agreement with the results predicted by the ultrafast ionization model. In the resonance excitation scenario, the PMDs of ${{\rm H}_{2}^{+}}$ are dominated by two-photon ionization, whereas the PMDs of HeH$^{2+}$ are dominated by three-photon ionization. Furthermore, the PMDs of ${{\rm HeH}^{2+}}$ are stronger in the resonance excitation scenario than those of ${{\rm H}_{2}^{+}}$, which can be explained by the time-dependent population of electrons. In addition, the molecular structure is clearly imprinted onto the PMDs.

关键词: resonance excitation, time-dependent Schrödinger equation, ultrafast ionization model, photoelectron momentum distributions

Abstract: By numerically solving the two-dimensional (2D) time-dependent Schrödinger equation (TDSE), we present photoelectron momentum distributions (PMDs) and photoelectron angular distributions (PADs) of symmetric (${{\rm H}_{2}^{+}}$) and asymmetric (${{\rm HeH}^{2+}}$) molecular ions in circularly polarized (CP) laser pulses. By adjusting the laser wavelength, two circumstances of resonance excitation and direct ionization were considered. The ionization mechanism of the resonance excitation was mainly investigated. The results show that the PMDs of ${{\rm H}_{2}^{+}}$ and ${{\rm HeH}^{2+}}$ in the $y$-direction gradually increase with increasing intensity, and the number of PMDs lobes is in good agreement with the results predicted by the ultrafast ionization model. In the resonance excitation scenario, the PMDs of ${{\rm H}_{2}^{+}}$ are dominated by two-photon ionization, whereas the PMDs of HeH$^{2+}$ are dominated by three-photon ionization. Furthermore, the PMDs of ${{\rm HeH}^{2+}}$ are stronger in the resonance excitation scenario than those of ${{\rm H}_{2}^{+}}$, which can be explained by the time-dependent population of electrons. In addition, the molecular structure is clearly imprinted onto the PMDs.

Key words: resonance excitation, time-dependent Schrödinger equation, ultrafast ionization model, photoelectron momentum distributions

中图分类号: (Molecular excitation and ionization)

34.80.Gs

32.80.-t (Photoionization and excitation) 31.15.xv (Molecular dynamics and other numerical methods) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

Xin-Yu Hao(郝欣宇), Shu-Juan Yan(闫淑娟), Ying Guo(郭颖), and Jing Guo(郭静). Momentum distributions of symmetric (H₂⁺) and asymmetric (HeH²⁺) molecular ions in a circularly polarized laser field under different ionization mechanisms[J]. 中国物理B, 2024, 33(12): 123401-123401.

参考文献

[1] Agostini P, Fabre F, Mainfray G, Petite G and Rahman N K 1979 Phys. Rev. Lett. 42 1127
[2] Li W K, Lei Y, Li X, Yang T, Du M, Jiang Y, Li J L, Luo S Z, Liu A H, He L H, Ma P, Zhang D D and Ding D J 2021 Chin. Phys. Lett. 38 053202
[3] Meng C S, Lü Z H, Wang X W, Zhang D W, Zhao Z X and Yuan J M 2022 Chin. Phys. Lett. 39 113701
[4] Yang Q, Leng J, Wang Y H, Sun Y N, Du H B, Zhang D D, Song L L, He L H and Liu F C 2022 Chin. Phys. Lett. 39 023301
[5] Corkum P B, Burnett N H and Brunel F 1989 Phys. Rev. Lett. 62 1259
[6] Watanabe S, Kondo K, Nabekawa Y, Sagisaka A and Kobayashi Y 1994 Phys. Rev. Lett. 73 2692
[7] Peatross J and Meyerhofer D D 1995 Phys. Rev. A 52 3976
[8] Miyazaki K and Takada H 1995 Phys. Rev. A 52 3007
[9] Krausz F and Ivanov M 2009 Rev. Mod. Phys. 81 163
[10] Chang Z H and Corkum P B 2010 J. Opt. Soc. Am. B 27 B9
[11] Paul P M, Toma E S, Breger P, Mullot G, Auge F, Balcou PH, Muller H G and Agostini P 2001 Science 292 1689
[12] Baltuska A, Udem Th, Uiberacker M, Hentschel M, Goulielmakis E, Gohle Ch, Holzwarth R, Yakovlev V S, Scrinzi A, Hansch T W and Krausz F 2003 Nature 421 611
[13] Corkum P B 2013 Attosecond Physics (Springer Series in Optical Sciences)
[14] Kfir O, Grychtol P, Turgut E, Knut R, Zusin D, Fleischer A, Bordo E, Fan T, Popmintchev D, Popmintchev T and others 2016 J. Phys. B: At. Mol. Opt. Phys. 49 123501
[15] Zhang X F, Li L, Zhu X S, Liu X, Zhang Q B, Lan P F and Lu P X 2016 Phys. Rev. A 94 053408
[16] Milošević D B 2016 Phys. Rev. A 93 051402
[17] Bandrauk A D, Mauger F and Yuan K J 2016 J. Phys. B: At. Mol. Opt. Phys. 49 23LT01
[18] Reich D M and Madsen L B 2016 Phys. Rev. A 93 043411
[19] Zhang C P and Miao X Y 2023 Chin. Phys. Lett. 40 124201
[20] Niikura H, Villeneuve D M and Corkum P B 2005 Phys. Rev. Lett. 94 083003
[21] Shao H C and Starace A F 2010 Phys. Rev. Lett. 105 263201
[22] Meckel M, Comtois D, Zeidler D, Staudte A, Pavicic D, Bandulet H C, Pepin H, Kieffer J C, Dorner R, Villeneuve D M and Corkum P B 2008 Science 320 1478
[23] Yuan K J, Chelkowski S and Bandrauk A D 2015 Chem. Phys. Lett. 638 173
[24] Zhang H D, Ben S, Xu T T, Song K L, Tian Y R, Xu Q Y, Zhang S Q, Guo J and Liu X S 2018 Phys. Rev. A 98 013422
[25] Li Y, Qin M Y, Zhu X S, Zhang Q B, Lan P F and Lu P X 2015 Opt. Express 23 10687
[26] Yuan K J, Lu H Z and Bandrauk A D 2011 Phys. Rev. A 83 043418
[27] Yuan K J and Bandrauk A D 2012 J. Phys. B: At. Mol. Opt. Phys. 45 105601
[28] Hatsui T, Nagasono M and Kosugi N 2004 J. Electron. Spectrosc. Relat. Phenom. 137 435
[29] Hollstein M and Rohringer N 2019 Phys. Rev. A 99 013425
[30] Chen Y and Zhang B 2012 Phys. Rev. A 86 023415
[31] Miao X Y and Du H N 2013 Phys. Rev. A 87 053403
[32] Xu Q Y, Yang Z J, He Y L, Gao F Y, Lu H Z and Guo J 2021 Opt. Express 29 32312
[33] Guan X, Secor E B, DuToit R C and Bartschat K 2012 Phys. Rev. A 86 053425
[34] Bian X B and Bandrauk A D 2011 Phys. Rev. A 83 023414
[35] Campos J A, Nascimento D L, Cavalcante D T, Fonseca A L and Numesa A O 2006 Int. J. Quantum Chem. 106 2587
[36] Yuan K J, Chelkowski S and Bandrauk A D 2014 Chem. Phys. Lett. 592 334
[37] Wind H 1965 J. Chem. Phys. 42 2371
[38] Bandrauk A D and Shen H 1993 J. Chem. Phys. 99 1185
[39] Bandrauk A D and Lu H 2013 J. Theor. Comput. Chem. 12 1340001
[40] Ben-Itzhak I, Gertner I, Heber O and Rosner B 1993 Phys. Rev. Lett. 71 1347
[41] Zuo T, Bandrauk A D and Corkum P B 1996 Chem. Phys. Lett. 259 313
[42] Odenweller M, Takemoto N, Vredenborg A, Cole K, Pahl K, Titze J, Schmidt L P, Jahnke T, Dorner R and Becker A 2011 Phys. Rev. Lett. 107 143004
[43] Akoury D, Kreidi K, Jahnke T, et al. 2007 Science 318 949
[44] Ansari Z, Böttcher M, Manschwetus B, et al. 2008 New J. Phys. 10 093027

Momentum distributions of symmetric (H₂⁺) and asymmetric (HeH²⁺) molecular ions in a circularly polarized laser field under different ionization mechanisms

Momentum distributions of symmetric (H₂⁺) and asymmetric (HeH²⁺) molecular ions in a circularly polarized laser field under different ionization mechanisms

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