| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Effect of multiple rescattering processes on harmonic emission in spatially inhomogeneous field |
| Cai-Ping Zhang(张彩萍)1,2, Chang-Long Xia(夏昌龙)1, Xiang-Fu Jia(贾祥富)1, Xiang-Yang Miao(苗向阳)1 |
1 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China;
2 College of Chemistry and Materials Science, Shanxi Normal University, Linfen 041004, China |
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Abstract The effect of multiple rescattering processes on the harmonic emission from He atom in a spatially inhomogeneous field is discussed by solving the one-dimensional time-dependent Schrödinger equation and the classical equation of motion. By establishing the physical model of the harmonic emission in the inhomogeneous field, we discuss the related characters of the multiple rescatterings process in the harmonic generation process. It shows that the second rescattering rather than the first rescattering tends to determine the harmonic cutoff energy when the inhomogeneous parameter is larger than 0.0055. Additionally, with the classical simulation, the underlying physical mechanism of the continuum-continuum harmonics is also revealed. Moreover, this work may provide new physical insight into the harmonic generation in an inhomogeneous field, and is beneficial to further extract the harmonic emission from molecular systems.
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Received: 03 November 2017
Revised: 19 December 2017
Accepted manuscript online:
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PACS:
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.25.Hz
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(Interference)
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33.80.Rv
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(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11404204, 11274215, and 11504221), the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2015021023), Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi Province, China, and Innovation Project for Postgraduates of Shanxi Province, China (Grant No. 2017BY085). |
Corresponding Authors:
Xiang-Fu Jia, Xiang-Yang Miao
E-mail: jiaxf@dns.sxnu.edu.cn;sxxymiao@126.com
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Cite this article:
Cai-Ping Zhang(张彩萍), Chang-Long Xia(夏昌龙), Xiang-Fu Jia(贾祥富), Xiang-Yang Miao(苗向阳) Effect of multiple rescattering processes on harmonic emission in spatially inhomogeneous field 2018 Chin. Phys. B 27 034206
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