Influence of the ground state wave function on the atomic high-order harmonic generation spectrum

LI Zhongyuan; GUO Yingchun; WANG bingbing

doi:10.3969/j.issn.1000-5641.202022002

Issue 1

Jan. 2021

Turn off MathJax

Article Contents

Article Navigation > Journal of East China Normal University (Natural Sciences) > 2021 > (1): 103-111

LI Zhongyuan, GUO Yingchun, WANG bingbing. Influence of the ground state wave function on the atomic high-order harmonic generation spectrum[J]. Journal of East China Normal University (Natural Sciences), 2021, (1): 103-111. doi: 10.3969/j.issn.1000-5641.202022002

Citation:

LI Zhongyuan, GUO Yingchun, WANG bingbing. Influence of the ground state wave function on the atomic high-order harmonic generation spectrum[J]. Journal of East China Normal University (Natural Sciences), 2021, (1): 103-111. doi: 10.3969/j.issn.1000-5641.202022002

Citation:

PDF( 0 KB)

Influence of the ground state wave function on the atomic high-order harmonic generation spectrum

doi: 10.3969/j.issn.1000-5641.202022002

1.
School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China
2.
Laboratory of Optical Physics, Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing　100190, China

Received Date: 2020-02-21
Publish Date: 2021-01-27

Abstract

Abstract

High-order harmonic generation (HHG) may occur during the interaction between an intense laser field and an atom or molecule; HHG has become an important xtreme utility vehicle(XUV) light source which can be used to probe atomic and molecular structures. In this paper, we investigate the effect of the radial distribution of electric density on the HHG spectra by calculating the HHG spectrum of noble atomic gases in a polarized laser field using s and p orbital functions as ground state wave functions. The results show that the form of the wave function does not influence the cutoff value of the harmonic spectrum, which is determined by the ionization threshold energy and the laser intensity. However, different types of orbital wave functions do lead to different envelopes for the HHG spectrum. In particular, there is an additional dip in the plateau area for the p orbital case compared with the spectrum for the s orbital case. By analyzing the formula for the HHG spectrum, we attributed the dip position on the HHG spectrum to the density distribution of the ground state wave function in momentum space. This work may shed light on applications for using the HHG spectrum to visualize atomic orbitals.
- envelope of high-order harmonic generation spectrum,
- s orbital,
- p orbital

FullText(HTML)

References(22)

References

[1]	TAKAHASHI E J, KANAI T, ISHIKAWA K L, et al. Coherent water window x-ray by phase-matched high-order harmonic generation in neutral media [J]. Physical Review Letters, 2008, 101(25): 253901.
[2]	POPMINTCHEV T, CHEN M C, POPMINTCHEV D, et al. Bright coherent ultrahigh harmonics in the keV x-ray regime from mid-infrared femtosecond Laser [J]. Science, 2012, 336(6086): 1287-1291.
[3]	宋浩, 吕孝源, 朱若碧, 等. 利用脉宽10 fs偏振控制脉冲获得孤立阿秒脉冲 [J]. 物理学报, 2019, 68(18): 184201.
[4]	FRUMKER E, KAJUMBA N, BERTRAND J B, et al. Publisher’s note: Probing polar molecules with high harmonic spectroscopy [J]. Physical Review Letters, 2012, 109(24): 233904.
[5]	KRAUS P M, RUPENYAN A, WÖRNER H J. High-harmonic spectroscopy of oriented OCS molecules: Emission of even and odd harmonics [J]. Physical Review Letters, 2012, 109(23): 233903.
[6]	ITATANI J, LEVESQUE J, ZEIDLER D, et al. Tomographic imaging of molecular orbitals [J]. Nature, 2004, 432: 867-871.
[7]	MCFARLAND B K, FARRELL J P, BUCKSBAUM P H, et al. High harmonic generation from multiple orbitals in N₂ [J]. Science, 2008, 322(5905): 1232-1235.
[8]	SHAFIR D, MAIRESSE Y, VILLENEUVE D M, et al. Atomic wavefunctions probed through strong-field light–matter interaction [J]. Nature Physics, 2009, 5(6): 412-416.
[9]	BAUER D, HANSEN K K. High-harmonic generation in solids with and without topological edge states [J]. Physical Review Letters, 2018, 120(17): 177401.
[10]	JIA L, ZHANG Z Y, YANG D Z, et al. High harmonic generation in magnetically doped topological insulators [J]. Physical Review B, 2019, 100(12): 125144.
[11]	CORKUM P B. Plasma perspective on strong-field multiphoton ionization [J]. Physical Review Letters, 1994, 71(13): 1994-1997.
[12]	LEWENSTEIN M, BALCOU P, IVANOV M Y, et al. Theory of high harmonic generation below frequency laser fields [J]. Physcal Review A, 1994, 49(3): 2117-2132.
[13]	PAN Y, GUO F M, YANG Y J, et al. Effect of laser intensity on quantum trajectories in the macroscopic high order harmonic generation [J]. Chinese Physics B, 2019, 28(11): 113201.
[14]	ZHANG F B, LIU Z X, YAO J P, et al. Spectrum- and time-resolved investigation of pre-excited argon atoms [J]. Physics Review A, 2019, 100(6): 063425.
[15]	CIPURA F, HALFMANN T. Resonantly enhanced harmonic generation via dressed states with large Autler–Townes splittings [J]. Journal of the Optical Society of America B, 2019, 36(10): 2777-2784.
[16]	ZHOU J W, JIAO Z H, LI P C, et al. Role of the dressed and bound states on below-threshold harmonic generation of He atom [J]. Chinese Physics B, 2019, 28(10): 103202.
[17]	SERRAT C, SERES J, SERES E, et al. Extreme-ultraviolet coherent pulse amplification in argon [J]. Physical Review A, 2019, 99(6): 063425.
[18]	GAO L H, LI X F, FU P M, et al. Nonperturbative quantum electrodynamics theory of high order harmonic generation [J]. Physical Review A, 2000, 61(6): 063407.
[19]	MILOSEVIC D B. Circularly polarized high harmonics generated by a bicircular field from inert atomic gases in the p state: A tool for exploring chirality-sensitive processes [J]. Physical Review A, 2015, 92(4): 043827.
[20]	BORDO E, NEUFELD O, KFIR O, et al. Spectroscopy of atomic orbital sizes using bi-elliptical high-order harmonic generation [J]. Physical Review A, 2019, 100(4): 043419.
[21]	XIA C L, LAN Y Y, LI Q Q, et al. Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields [J]. Chinese Physics B, 2019, 28(10): 103203.
[22]	LEVESQUE J, ZEIDLER D, MARANGOS J P, et al. High harmonic generation and the role of atomic orbital wave functions [J]. Physical Review Letters, 2007, 98(18): 183903.