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Proceedings Paper

Real-time measurement of the full spatiotemporal field of a single terahertz pulse by pulsed digital holography
Author(s): Xiaolei Wang; Hongchen Zhai; Lujie Li
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Paper Abstract

Up to now, a variety of methods have been developed for the single-shot THz detection, which include spectral encoding technique [2-3], optical streak camera [4], non-collinear geometry spatial encoding [5], non-collinear cross correlation technique [6], retrieval algorithm based on in-line spectral interferometry [7], two-dimensional electro-optic imaging with dual echelons [8], tilted front collinear geometry [9], etc. For a single-shot characterization of THz pulse, all of the schemes mentioned above can be, however, only employed to measure the electric field of a single-shot THz either in its spatial or temporal domain, respectively, in real time. In this paper, we describe a method for a single-shot recording of the full spatiotemporal electric field, E(x, y, t), of freely propagating terahertz pulse based on the electro-optic (E-O) sampling technique and the pulsed digital holographic approach. From a series of sub-holograms recorded digitally, the complete THz electric field E(x, y, t) can be recovered by the following digital reconstruction algorithm. The spatial and temporal resolutions are limited by the wavelength of terahertz pulse and the probe pulse duration, respectively. Our new method will open a possibility of a full characterization of the three-dimensional THz field E(x, y, t) in a single-shot mode.

Paper Details

Date Published: 2 December 2010
PDF: 6 pages
Proc. SPIE 7851, Information Optics and Optical Data Storage, 78510J (2 December 2010); doi: 10.1117/12.872482
Show Author Affiliations
Xiaolei Wang, Nankai Univ. (China)
Hongchen Zhai, Nankai Univ. (China)
Lujie Li, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 7851:
Information Optics and Optical Data Storage
Feijun Song; Shiquan Tao; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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