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Chin. Phys. B, 2014, Vol. 23(6): 064202    DOI: 10.1088/1674-1056/23/6/064202
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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

Wang Xiao-Leia, Fei Yanga, Li Lu-Jiea, Wang Qianga, Zhu Zhu-Qingb
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
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.
Keywords:  spatiotemporal field of single-shot terahertz pulse      Dammann grating      interference band-pass filter      spectral holography     
Received:  22 November 2013      Published:  15 June 2014
PACS:  42.40.-i (Holography)  
  87.50.U-  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10904079).
Corresponding Authors:  Zhu Zhu-Qing     E-mail:  njzqzhu@163.com

Cite this article: 

Wang Xiao-Lei, Fei Yang, Li Lu-Jie, Wang Qiang, Zhu Zhu-Qing Detection of the spatiotemporal field of a single-shot terahertz pulse based on spectral holography 2014 Chin. Phys. B 23 064202

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