Phase-Sensitive Terahertz Self-Heterodyne System Based on Photodiode and Low-Temperature-Grown GaAs Photoconductor at 1.55 μm

被引：57

作者：

Hisatake, Shintaro ^{[1
]}

Kitahara, Genki ^{[1
]}

Ajito, Katsuhiro ^{[2
]}

Fukada, Youichi ^{[3
]}

Yoshimoto, Naoto ^{[3
]}

Nagatsuma, Tadao ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Div Adv Elect & Opt Sci, Osaka 5608531, Japan

[2] NTT Corp, NTT Microsyst Integrat Labs, Atsugi, Kanagawa 2430198, Japan

[3] NTT Corp, NTT Access Network Serv Syst Labs, Atsugi, Kanagawa 2390847, Japan

来源：

IEEE SENSORS JOURNAL | 2013年 / 13卷 / 01期

关键词：

Continuous wave; low-temperature-grown GaAs; phase sensitive detection; photonic local oscillator (LO); self-heterodyne detection; terahertz (THz) wave; SPECTROSCOPY; RADIATION;

D O I：

10.1109/JSEN.2012.2218281

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose and demonstrate a technique for phase change measurement of a continuous terahertz (THz) wave, based on 1.55-mu m photonic techniques. The generation of the THz wave is based on photomixing using a uni-traveling-carrier photodiode. The detection of the THz wave is based on heterodyne mixing of the THz wave, using a low-temperature-grown GaAs photoconductor with frequency-shifted photonic local oscillator signal. The measurement of a phase shift induced by a single sheet of paper with 85-mu m thickness has been demonstrated at 300 GHz.

引用

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