Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields

doi:10.1088/1674-1056/acad70

中国物理B ›› 2023, Vol. 32 ›› Issue (7): 73301-073301.doi: 10.1088/1674-1056/acad70

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

收稿日期:2022-10-24 修回日期:2022-12-03 接受日期:2022-12-21 出版日期:2023-06-15 发布日期:2023-06-15
通讯作者: Yingbin Li, Benhai Yu E-mail:liyingbin2008@163.com;hnyubenhai@163.com
基金资助:
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.

Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Received:2022-10-24 Revised:2022-12-03 Accepted:2022-12-21 Online:2023-06-15 Published:2023-06-15
Contact: Yingbin Li, Benhai Yu E-mail:liyingbin2008@163.com;hnyubenhai@163.com
Supported by:
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.

摘要/Abstract

摘要： 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.

关键词: high-order harmonic generation, attosecond pulse, elliptically polarized

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.

Key words: high-order harmonic generation, attosecond pulse, elliptically polarized

中图分类号: (Ultraviolet spectra)

33.20.Lg

42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)

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[J]. 中国物理B, 2023, 32(7): 73301-073301.

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Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields

Elliptically polarized high-order harmonic generation in nitrogen molecules with cross-linearly polarized two-color laser fields

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