Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields

doi:10.1088/1674-1056/ad3dd3

中国物理B ›› 2024, Vol. 33 ›› Issue (7): 74204-074204.doi: 10.1088/1674-1056/ad3dd3

Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields

Li-Long Wu(吴立龙)¹, Wei-Chao Jiang(姜维超)^1,†, and Liang-You Peng(彭良友)²

1 Institute of Quantum Precision Measurement, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;
2 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China

收稿日期:2024-02-23 修回日期:2024-03-27 接受日期:2024-04-12 出版日期:2024-06-18 发布日期:2024-06-20
通讯作者: Wei-Chao Jiang E-mail:jiang.wei.chao@szu.edu.cn
基金资助:
This work is supported by the National Natural Science Foundation of China (Grant Nos. 12074265, 12234002, and 92250303) and the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022A1515010329).

Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields

Li-Long Wu(吴立龙)¹, Wei-Chao Jiang(姜维超)^1,†, and Liang-You Peng(彭良友)²

1 Institute of Quantum Precision Measurement, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;
2 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China

Received:2024-02-23 Revised:2024-03-27 Accepted:2024-04-12 Online:2024-06-18 Published:2024-06-20
Contact: Wei-Chao Jiang E-mail:jiang.wei.chao@szu.edu.cn
Supported by:
This work is supported by the National Natural Science Foundation of China (Grant Nos. 12074265, 12234002, and 92250303) and the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022A1515010329).

摘要/Abstract

摘要： Based on numerical solutions of the time-dependent Schrödinger equation, we theoretically investigate the photoelectron spectrum of hydrogen atoms ionized by a pair of ultrashort, intense, and orthogonally polarized laser pulses with a relative time delay in a pump-probe configuration. The pump pulse resonantly excites electrons from the 1s and 2p levels, inducing Rabi oscillations. The resulting dynamically enhanced Autler-Townes (AT) splitting is observed in the photoelectron energy spectrum upon interaction with the second probe pulse. In contrast to the previous parallel-polarization scheme, the proposed orthogonal-polarization configuration enables the resolution of dynamically enhanced AT splitting over a considerably wider range of probe photon energies.

关键词: Autler-Townes splitting, orthogonal XUV fields, photoelectron spectra, Rabi frequency

Abstract: Based on numerical solutions of the time-dependent Schrödinger equation, we theoretically investigate the photoelectron spectrum of hydrogen atoms ionized by a pair of ultrashort, intense, and orthogonally polarized laser pulses with a relative time delay in a pump-probe configuration. The pump pulse resonantly excites electrons from the 1s and 2p levels, inducing Rabi oscillations. The resulting dynamically enhanced Autler-Townes (AT) splitting is observed in the photoelectron energy spectrum upon interaction with the second probe pulse. In contrast to the previous parallel-polarization scheme, the proposed orthogonal-polarization configuration enables the resolution of dynamically enhanced AT splitting over a considerably wider range of probe photon energies.

Key words: Autler-Townes splitting, orthogonal XUV fields, photoelectron spectra, Rabi frequency

中图分类号: (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)

42.50.Hz

32.80.Rm (Multiphoton ionization and excitation to highly excited states) 32.80.Qk (Coherent control of atomic interactions with photons)

Li-Long Wu(吴立龙), Wei-Chao Jiang(姜维超), and Liang-You Peng(彭良友). Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields[J]. 中国物理B, 2024, 33(7): 74204-074204.

Li-Long Wu(吴立龙), Wei-Chao Jiang(姜维超), and Liang-You Peng(彭良友). Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields[J]. Chin. Phys. B, 2024, 33(7): 74204-074204.

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Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields

Dynamically enhanced Autler-Townes splitting by orthogonal XUV fields

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