A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector | Zendy

Ying Zhang | Zendy; Xiaoling Zhang | Zendy; Shaoxian Li | Zendy; Jianqiang Gu | Zendy; Yanfeng Li | Zendy; Zhen Tian | Zendy; Chunmei Ouyang | Zendy; Mingxia He | Zendy; Jiaguang Han | Zendy; Weili Zhang | Zendy

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A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

Author(s) -

Ying Zhang,

Xiaoling Zhang,

Shaoxian Li,

Jianqiang Gu,

Yanfeng Li,

Zhen Tian,

Chunmei Ouyang,

Mingxia He,

Jiaguang Han,

Weili Zhang

Publication year - 2016

Publication title -

scientific reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.24

H-Index - 213

ISSN - 2045-2322

DOI - 10.1038/srep26949

Subject(s) - terahertz radiation , optoelectronics , common emitter , materials science , detector , laser , terahertz time domain spectroscopy , broadband , optics , photoconductivity , antenna (radio) , time domain , terahertz spectroscopy and technology , physics , telecommunications , computer science , computer vision

We demonstrate a 4-f terahertz time-domain spectroscopy (THz-TDS) system using an organic crystal DSTMS as the THz emitter and a low temperature grown (LTG) InGaAs/InAlAs photoconductive antenna as the receiver. The system covers a frequency range from 0.2 up to 8 THz. The influences of the pump laser power, the probe laser power and the azimuthal angle of the DSTMS crystal on the time-domain THz amplitude are experimentally analyzed. The frequency accuracy of the system is verified by measuring two metamaterial samples and a lactose film in this THz-TDS system. The proposed combination of DSTMS emission and PC antenna detection realizes a compact and low-cost THz-TDS scheme with an ultra-broad bandwidth, which may promote the development and the applications of THz-TDS techniques.

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