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
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.
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
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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