| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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New terahertz dispersive device for single-shot spectral measurements of terahertz pulse |
| Wu Yin-Zhong (巫殷忠)a b, Zhao Zong-Qing (赵宗清)a b, Gu Yu-Qiu (谷渝秋)a b, Wei Lai (魏来)b, Cao Lei-Feng (曹磊峰)a b |
a Science and Technology on Plasma Physics Laboratory, China Academy of Engineering Physics, Mianyang 621900, China;
b Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang 621900, China |
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Abstract A new terahertz dispersive device designed for single-shot spectral measurements of broadband terahertz pulses is proposed. With two-dimensional quasi-randomly distributed element design, the device exhibits approximately the dispersive property of single-order diffraction in far field. Its far-field diffraction pattern is experimentally verified employing a continuous terahertz source centered at 2.52 THz and a pyroelectric focal-plane-array camera, which is in good agreement with the numerical result. The device provides a new approach for direct single-shot spectral measurements of broadband terahertz waves.
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Received: 27 July 2014
Revised: 11 August 2014
Accepted manuscript online:
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PACS:
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52.70.Kz
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(Optical (ultraviolet, visible, infrared) measurements)
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| Fund: Project supported by the Foundation of Science and Technology Development of China Academy of Engineering Physics (Grant No. 2011B0102023) and the Foundation of Plasma Physics Laboratory (Grant No. 9140C680304110C6806). |
Corresponding Authors:
Cao Lei-Feng
E-mail: liaode_2002@yahoo.com.cn
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Cite this article:
Wu Yin-Zhong (巫殷忠), Zhao Zong-Qing (赵宗清), Gu Yu-Qiu (谷渝秋), Wei Lai (魏来), Cao Lei-Feng (曹磊峰) New terahertz dispersive device for single-shot spectral measurements of terahertz pulse 2014 Chin. Phys. B 23 125202
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