中国物理B ›› 2023, Vol. 32 ›› Issue (2): 24203-024203.doi: 10.1088/1674-1056/ac70b6

• • 上一篇    下一篇

Laser shaping and optical power limiting of pulsed Laguerre-Gaussian laser beams of high-order radial modes in fullerene C60

Jie Li(李杰)1, Wen-Hui Guan(管文慧)1, Shuo Yuan(袁烁)1, Ya-Nan Zhao(赵亚男)1, Yu-Ping Sun(孙玉萍)2, and Ji-Cai Liu(刘纪彩)1,†   

  1. 1 Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China;
    2 School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China
  • 收稿日期:2022-01-18 修回日期:2022-04-27 接受日期:2022-05-18 出版日期:2023-01-10 发布日期:2023-01-18
  • 通讯作者: Ji-Cai Liu E-mail:jicailiu@ncepu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974108 and 11574082), Fundamental Research Funds for the Central Universities (Grant No. 2021MS046), and the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019MA020).

Laser shaping and optical power limiting of pulsed Laguerre-Gaussian laser beams of high-order radial modes in fullerene C60

Jie Li(李杰)1, Wen-Hui Guan(管文慧)1, Shuo Yuan(袁烁)1, Ya-Nan Zhao(赵亚男)1, Yu-Ping Sun(孙玉萍)2, and Ji-Cai Liu(刘纪彩)1,†   

  1. 1 Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China;
    2 School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China
  • Received:2022-01-18 Revised:2022-04-27 Accepted:2022-05-18 Online:2023-01-10 Published:2023-01-18
  • Contact: Ji-Cai Liu E-mail:jicailiu@ncepu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974108 and 11574082), Fundamental Research Funds for the Central Universities (Grant No. 2021MS046), and the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019MA020).

摘要: We study the strong nonlinear optical dynamics of nanosecond pulsed Laguerre-Gaussian laser beams of high-order radial modes with zero orbital angular momentum propagating in the fullerene C60 molecular medium. It is found that the spatiotemporal profile of the incident pulsed Laguerre-Gaussian laser beam is strongly reshaped during its propagation in the C60 molecular medium. The centrosymmetric temporal profile of the incident pulse gradually evolves into a non-centrosymmetric meniscus shape, and the on-axis pulse duration is clearly depressed. Furthermore, the field intensity is distinctly attenuated due to the field-intensity-dependent reverse saturable absorption, and clear optical power limiting behavior is observed for different orders of the input pulsed Laguerre-Gaussian laser beams before the takeover of the saturation effect; the lower the order of the Laguerre-Gaussian beam, the lower the energy transmittance.

关键词: pulsed Laguerre-Gaussian laser beams, high-order radial mode, optical power limiting, reverse saturable absorption

Abstract: We study the strong nonlinear optical dynamics of nanosecond pulsed Laguerre-Gaussian laser beams of high-order radial modes with zero orbital angular momentum propagating in the fullerene C60 molecular medium. It is found that the spatiotemporal profile of the incident pulsed Laguerre-Gaussian laser beam is strongly reshaped during its propagation in the C60 molecular medium. The centrosymmetric temporal profile of the incident pulse gradually evolves into a non-centrosymmetric meniscus shape, and the on-axis pulse duration is clearly depressed. Furthermore, the field intensity is distinctly attenuated due to the field-intensity-dependent reverse saturable absorption, and clear optical power limiting behavior is observed for different orders of the input pulsed Laguerre-Gaussian laser beams before the takeover of the saturation effect; the lower the order of the Laguerre-Gaussian beam, the lower the energy transmittance.

Key words: pulsed Laguerre-Gaussian laser beams, high-order radial mode, optical power limiting, reverse saturable absorption

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
42.65.Sf (Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics) 32.80.Rm (Multiphoton ionization and excitation to highly excited states)