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Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields |
Chunyang Zhai(翟春洋)†, Yinmeng Wu(吴银梦)†, Lingling Qin(秦玲玲), Xiang Li(李翔), Luke Shi(史璐珂), Ke Zhang(张可), Shuaijie Kang(康帅杰), Zhengfa Li(李整法), Yingbin Li(李盈傧)‡, Qingbin Tang(汤清彬), and Benhai Yu(余本海)§ |
College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China |
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Abstract Circularly and elliptically polarized high-order harmonics have unique advantages when used in studying the chiral and magnetic features of matter. Here, we studied the polarization properties of high-order harmonics generated from alignment nitrogen molecules driven by cross-linearly polarized two-color laser fields. Through adjusting various laser parameters and targets, such as the relative phase, the crossing angle, the intensity ratio of the driving fields, and the molecular alignment angle, we obtained highly elliptically polarized high-order harmonics with the same helicity in a wide spectral range. This provides a possible effective way to generate elliptically polarized attosecond pulses. Finally, we showed the probability of controlling the spectral range of elliptically polarized harmonics.
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Received: 24 October 2022
Revised: 03 December 2022
Accepted manuscript online: 21 December 2022
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PACS:
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33.20.Lg
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(Ultraviolet spectra)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12104389, 12074329, and 12004323) and the Nanhu Scholars Program for Young Scholars of XYNU. |
Corresponding Authors:
Yingbin Li, Benhai Yu
E-mail: liyingbin2008@163.com;hnyubenhai@163.com
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Cite this article:
Chunyang Zhai(翟春洋), Yinmeng Wu(吴银梦), Lingling Qin(秦玲玲), Xiang Li(李翔), Luke Shi(史璐珂), Ke Zhang(张可), Shuaijie Kang(康帅杰), Zhengfa Li(李整法), Yingbin Li(李盈傧), Qingbin Tang(汤清彬), and Benhai Yu(余本海) Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields 2023 Chin. Phys. B 32 073301
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