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Nitrogen air lasing induced by multiple filaments array

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Abstract

Air lasing emission by launching intense ultrafast laser pulses in atmosphere has recently attracted increasing interest in the ultrafast laser science and atmospheric science fields, especially for remote sensing techniques. We demonstrated the fluorescence emissions at 337 nm, 357 nm and 391 nm induced by multiple filaments using four kinds of step phase plates. Our results have indicated that the fluorescence signal has been amplified as it propagates along the filament through amplified spontaneous emission (ASE), and the fluorescence intensity is also enhanced in the backward direction via multiple filaments. Furthermore, the gain coefficient through ASE is increased with the number of filaments.

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Acknowledgments

We acknowledge Professor LIU Weiwei for his discussions and assistance in setting up this experiment.

Author information

Authors and Affiliations

  1. Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, Tianjin, 300387, China

    Di Zhu, Chunhua Li, Zhongkun Gao & Xiaodong Sun

  2. School of Electronics and Information Engineering, Tiangong University, Tianjin, 300387, China

    Di Zhu, Chunhua Li & Xiaodong Sun

  3. School of Life Science, Tiangong University, Tianjin, 300387, China

    Zhongkun Gao

  4. School of Physical Science and Technology, Tiangong University, Tianjin, 300387, China

    Hui Gao

Authors
  1. Di Zhu
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  2. Chunhua Li
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  3. Zhongkun Gao
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  4. Xiaodong Sun
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  5. Hui Gao
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Corresponding author

Correspondence to Xiaodong Sun.

Additional information

This work has been supported by the National Natural Science Foundation of China (No.61605144), the Natural Science Foundation of Tianjin City (No.17JCQNJC02000), the Tianjin Municipal Education Commission Program (No.2017KJ099), and the Undergraduate Innovation and Entrepreneurship Training Program of Tiangong University (No.202010058106).

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The authors declare that there are no conflicts of interest related to this article.

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Zhu, D., Li, C., Gao, Z. et al. Nitrogen air lasing induced by multiple filaments array. Optoelectron. Lett. 18, 354–359 (2022). https://doi.org/10.1007/s11801-022-1182-y

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  • DOI: https://doi.org/10.1007/s11801-022-1182-y

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