From terahertz to mid-infrared ultra-broadband radiation generated from few-cycle laser pulse interaction with gas plasma filament
Author:
Affiliation:

1.Key Laboratory of Nondestructive Testing (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, China;2.School of Measuring and Optical Engineering, Nanchang Hangkong University, Nanchang 330063, China

Clc Number:

O434.3

Fund Project:

Supported by the National Natural Science Foundation of China (12064028); Jiangxi Provincial Natural Science Foundation (20232BAB201045); and Open Foundation of Key Laboratory of Nondestructive Testing Technology (Ministry of Education) (EW202108218)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The strong few-cycle laser pulse interaction with the gas plasma filament can generate strong and broadband terahertz radiation. Here, we investigate the detail of plasma current and its terahertz radiation produced by the few-cycle laser pulse interaction with the gas plasma based on the calculations. The ionization during the plasma filamentation is in the transition between the tunnel ionization and the multiphoton ionization. The results show that this scheme can generate ultra-broadband radiation from the range of terahertz to mid-infrared, and its amplitude is a periodic function of the carrier-envelope phase of the few-cycle laser pulse. The frequency of the terahertz pulse is determined by the duration of the laser pulse, the time evolution of ionization and the plasma current, rather than by the density of the plasma. This work might give a useful clue to carry out the experiment of ultra-broadband terahertz generation by the few-cycle laser pulse interaction with the gas plasma filament.

    Reference
    Related
    Cited by
Get Citation

DU Hai-Wei, WANG Jing-Yi, SUN Chang-Ming, LI Qiang-Shuang. From terahertz to mid-infrared ultra-broadband radiation generated from few-cycle laser pulse interaction with gas plasma filament[J]. Journal of Infrared and Millimeter Waves,2023,42(6):788~794

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:March 02,2023
  • Revised:November 03,2023
  • Adopted:May 08,2023
  • Online: November 03,2023
  • Published: