中国物理B ›› 2022, Vol. 31 ›› Issue (9): 97801-097801.doi: 10.1088/1674-1056/ac6b28

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Measurement of CO, HCN, and NO productions in atmospheric reaction induced by femtosecond laser filament

Xiao-Dong Huang(黄晓东)1, Meng Zhang(张梦)1, Lun-Hua Deng(邓伦华)1,†, Shan-Biao Pang(庞山彪)1, Ke Liu(刘珂)1, and Huai-Liang Xu(徐淮良)1,2,3,‡   

  1. 1 State Key Laboratory of Precision Spectroscopy, East China Normal University(ECNU), Shanghai 200062, China;
    2 State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China;
    3 Chinese Academy of Sciences Center for Excellence in Ultra-Intense Laser Science, Shanghai 201800, China
  • 收稿日期:2022-03-07 修回日期:2022-04-21 接受日期:2022-04-28 出版日期:2022-08-19 发布日期:2022-08-30
  • 通讯作者: Lun-Hua Deng, Huai-Liang Xu E-mail:lhdeng@phy.ecnu.edu.cn;huailiang@jlu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 1625501 and 62027822) and the Research Funds of Happiness Flower ECNU, China (Grant No. 2021ST2110).

Measurement of CO, HCN, and NO productions in atmospheric reaction induced by femtosecond laser filament

Xiao-Dong Huang(黄晓东)1, Meng Zhang(张梦)1, Lun-Hua Deng(邓伦华)1,†, Shan-Biao Pang(庞山彪)1, Ke Liu(刘珂)1, and Huai-Liang Xu(徐淮良)1,2,3,‡   

  1. 1 State Key Laboratory of Precision Spectroscopy, East China Normal University(ECNU), Shanghai 200062, China;
    2 State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China;
    3 Chinese Academy of Sciences Center for Excellence in Ultra-Intense Laser Science, Shanghai 201800, China
  • Received:2022-03-07 Revised:2022-04-21 Accepted:2022-04-28 Online:2022-08-19 Published:2022-08-30
  • Contact: Lun-Hua Deng, Huai-Liang Xu E-mail:lhdeng@phy.ecnu.edu.cn;huailiang@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 1625501 and 62027822) and the Research Funds of Happiness Flower ECNU, China (Grant No. 2021ST2110).

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摘要： It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO, HCN, and NO, and the production CO and HCN are observed for the first time. The concentrations of the products are measured by mid-infrared tunable laser absorption spectroscopy. In the reduced pressure air, the decomposition of CO2 is enhanced by vibration excitation induced by laser filament, resulting in the enhanced production of CO and HCN. At the same time, the CO and HCN generated from the atmosphere suffer rotation excitation induced by laser filament, enhancing their absorption spectra. It is found that NO, CO, and HCN accumulate to 134 ppm, 80 ppm, and 1.6 ppm in sealed air after sufficient reaction time. The atmospheric chemical reaction induced by laser filament opens the way to changing the air composition while maintaining environmental benefits.

关键词: femtosecond laser filament, atmospheric reaction, CO, HCN, NO

Abstract: It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO, HCN, and NO, and the production CO and HCN are observed for the first time. The concentrations of the products are measured by mid-infrared tunable laser absorption spectroscopy. In the reduced pressure air, the decomposition of CO2 is enhanced by vibration excitation induced by laser filament, resulting in the enhanced production of CO and HCN. At the same time, the CO and HCN generated from the atmosphere suffer rotation excitation induced by laser filament, enhancing their absorption spectra. It is found that NO, CO, and HCN accumulate to 134 ppm, 80 ppm, and 1.6 ppm in sealed air after sufficient reaction time. The atmospheric chemical reaction induced by laser filament opens the way to changing the air composition while maintaining environmental benefits.

Key words: femtosecond laser filament, atmospheric reaction, CO, HCN, NO

中图分类号:  (Spectroscopy of solid state dynamics)

  • 78.47.-p
82.53.-k (Femtochemistry) 78.30.-j (Infrared and Raman spectra) 82.33.Tb (Atmospheric chemistry)