中国物理B ›› 2014, Vol. 23 ›› Issue (6): 64202-064202.doi: 10.1088/1674-1056/23/6/064202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Detection of the spatiotemporal field of a single-shot terahertz pulse based on spectral holography

王晓雷a, 费扬a, 李璐杰a, 王强a, 朱竹青b   

  1. a Institute of Modern Optics, Optical Information Science and Technology Key Laboratory of the Ministry of Education, Nankai University, Tianjin 300071, China;
    b Jiangsu Provincial Key Laboratory of Optoelectronic Technology, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
  • 收稿日期:2013-11-22 修回日期:2014-01-28 出版日期:2014-06-15 发布日期:2014-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10904079).

Detection of the spatiotemporal field of a single-shot terahertz pulse based on spectral holography

Wang Xiao-Lei (王晓雷)a, Fei Yang (费扬)a, Li Lu-Jie (李璐杰)a, Wang Qiang (王强)a, Zhu Zhu-Qing (朱竹青)b   

  1. a Institute of Modern Optics, Optical Information Science and Technology Key Laboratory of the Ministry of Education, Nankai University, Tianjin 300071, China;
    b Jiangsu Provincial Key Laboratory of Optoelectronic Technology, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
  • Received:2013-11-22 Revised:2014-01-28 Online:2014-06-15 Published:2014-06-15
  • Contact: Zhu Zhu-Qing E-mail:njzqzhu@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10904079).

摘要: According to electro-optical sampling theory, we propose a new method to detect the spatiotemporal field of a single-shot terahertz pulse by spectral holography for the first time. The single-shot terahertz pulse is coupled into a broadened chirped femtosecond pulse according to electro-optical sampling theory in the detecting system. Then the reference wave and the signal wave are split by Dammann grating and spread into the interference band-pass filter. The filtered sub-waves are at different central-frequencies because of the different incident angles. These sub-waves at different central-frequencies interfere to form sub-holograms, which are recorded in a single frame of a charge coupled device (CCD). The sub-holograms are numerically processed, and the spatiotemporal field distribution of the original terahertz pulse is reconstructed. The computer simulations verify the feasibility of the proposed method.

关键词: spatiotemporal field of single-shot terahertz pulse, Dammann grating, interference band-pass filter, spectral holography

Abstract: According to electro-optical sampling theory, we propose a new method to detect the spatiotemporal field of a single-shot terahertz pulse by spectral holography for the first time. The single-shot terahertz pulse is coupled into a broadened chirped femtosecond pulse according to electro-optical sampling theory in the detecting system. Then the reference wave and the signal wave are split by Dammann grating and spread into the interference band-pass filter. The filtered sub-waves are at different central-frequencies because of the different incident angles. These sub-waves at different central-frequencies interfere to form sub-holograms, which are recorded in a single frame of a charge coupled device (CCD). The sub-holograms are numerically processed, and the spatiotemporal field distribution of the original terahertz pulse is reconstructed. The computer simulations verify the feasibility of the proposed method.

Key words: spatiotemporal field of single-shot terahertz pulse, Dammann grating, interference band-pass filter, spectral holography

中图分类号:  (Holography)

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