中国物理B ›› 2024, Vol. 33 ›› Issue (4): 47803-047803.doi: 10.1088/1674-1056/ad2509

所属专题： SPECIAL TOPIC — Optical field manipulation

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Strong field ionization of molecules on the surface of nanosystems

Qiwen Qu(曲棋文)1, Fenghao Sun(孙烽豪)1, Jiawei Wang(王佳伟)1, Jian Gao(高健)1,2, Hui Li(李辉)1,†, and Jian Wu(吴健)1,2,3,4   

  1. 1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China;
    2 Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401121, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    4 CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai 201800, China
  • 收稿日期:2023-12-27 修回日期:2024-01-25 接受日期:2024-02-02 出版日期:2024-03-19 发布日期:2024-04-07
  • 通讯作者: Hui Li E-mail:hli@lps.ecnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Fundation of China (Grant Nos. 92050105, 92250301, and 12227807).

Strong field ionization of molecules on the surface of nanosystems

Qiwen Qu(曲棋文)1, Fenghao Sun(孙烽豪)1, Jiawei Wang(王佳伟)1, Jian Gao(高健)1,2, Hui Li(李辉)1,†, and Jian Wu(吴健)1,2,3,4   

  1. 1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China;
    2 Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401121, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    4 CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai 201800, China
  • Received:2023-12-27 Revised:2024-01-25 Accepted:2024-02-02 Online:2024-03-19 Published:2024-04-07
  • Contact: Hui Li E-mail:hli@lps.ecnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Fundation of China (Grant Nos. 92050105, 92250301, and 12227807).

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摘要： Besides the diverse investigations on the interactions between intense laser fields and molecular systems, extensive research has been recently dedicated to exploring the response of nanosystems excited by well-tailored femtosecond laser fields. Due to the fact that nanostructures hold peculiar effects when illuminated by laser pulses, the underlying mechanisms and the corresponding potential applications can make significant improvements in both fundamental research and development of novel techniques. In this review, we provide a summarization of the strong field ionization occurring on the surface of nanosystems. The molecules attached to the nanoparticle surface perform as the precursor in the ionization and excitation of the whole nanosystem, the fundamental processes of which are yet to be discovered. We discuss the influence on nanoparticle constituents, geometric shapes and sizes, as well as the specific waveforms of the excitation laser fields. The intriguing characteristics observed in surface ion emission reflect how enhanced near field affects the localized ionizations and nanoplasma expansions, thereby paving the way for further precision controls on the light-and-matter interactions in the extreme spatial temporal levels.

关键词: nanoparticle, femtosecond laser field, local field enhancement

Abstract: Besides the diverse investigations on the interactions between intense laser fields and molecular systems, extensive research has been recently dedicated to exploring the response of nanosystems excited by well-tailored femtosecond laser fields. Due to the fact that nanostructures hold peculiar effects when illuminated by laser pulses, the underlying mechanisms and the corresponding potential applications can make significant improvements in both fundamental research and development of novel techniques. In this review, we provide a summarization of the strong field ionization occurring on the surface of nanosystems. The molecules attached to the nanoparticle surface perform as the precursor in the ionization and excitation of the whole nanosystem, the fundamental processes of which are yet to be discovered. We discuss the influence on nanoparticle constituents, geometric shapes and sizes, as well as the specific waveforms of the excitation laser fields. The intriguing characteristics observed in surface ion emission reflect how enhanced near field affects the localized ionizations and nanoplasma expansions, thereby paving the way for further precision controls on the light-and-matter interactions in the extreme spatial temporal levels.

Key words: nanoparticle, femtosecond laser field, local field enhancement

中图分类号:  (Nanocrystals, nanoparticles, and nanoclusters)

  • 78.67.Bf
82.53.Xa (Femtosecond probes of molecules in solids and of molecular solids) 79.60.Bm (Clean metal, semiconductor, and insulator surfaces) 52.20.Hv (Atomic, molecular, ion, and heavy-particle collisions)