| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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 |
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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.
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Received: 23 February 2024
Revised: 27 March 2024
Accepted manuscript online: 12 April 2024
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PACS:
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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| Fund: 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). |
Corresponding Authors:
Wei-Chao Jiang
E-mail: jiang.wei.chao@szu.edu.cn
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Cite this article:
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 2024 Chin. Phys. B 33 074204
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