Photonics Research, 2018, 6 (4): 04000296, Published Online: Aug. 1, 2018   

Clue to a thorough understanding of terahertz pulse generation by femtosecond laser filamentation Download: 733次

Author Affiliations
1 Shanghai Key Laboratory of Modern Optical Systems, College of Optics and Electronic Information Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2 Institute of Modern Optics, Key Laboratory of Optical Information Science and Technology, Ministry of Education, Nankai University, Tianjin 300071, China
3 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
4 e-mail: py@usst.edu.cn
5 e-mail: ymzhu@usst.edu.cn
Abstract
In this work, it has been demonstrated that in order to fully understand the terahertz (THz) pulse generation process during femtosecond laser filamentation, the interaction between THz wave and air plasma has to be taken into account. This interaction is mainly associated with the spatial confinement of the THz pulse by the plasma column, which could be described by the one-dimensional negative dielectric (1DND) waveguide model. By combining the 1DND model with the conventional four-wave mixing (4WM) and photocurrent (PC) models, the variation of THz spectral amplitude and width obtained in experiments could be better understood. Finally, a three-step procedure, with 1DND bridging 4WM and PC processes, has been established for the first time to describe the underlying mechanism of THz radiation from plasma sources.

Jiayu Zhao, Weiwei Liu, Shichang Li, Dan Lu, Yizhu Zhang, Yan Peng, Yiming Zhu, Songlin Zhuang. Clue to a thorough understanding of terahertz pulse generation by femtosecond laser filamentation[J]. Photonics Research, 2018, 6(4): 04000296.

本文已被 7 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!