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

doi:10.1088/1674-1056/23/6/064202

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
Revised: 28 January 2014
Accepted manuscript online:

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 (王晓雷), Fei Yang (费扬), Li Lu-Jie (李璐杰), Wang Qiang (王强), Zhu Zhu-Qing (朱竹青) 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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Detection of the spatiotemporal field of a single-shot terahertz pulse based on spectral holography

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