Terahertz imaging system with resonant tunneling diodes

被引:54
|
作者
Miyamoto, Tomoyuki [1 ]
Yamaguchi, Atsushi [1 ]
Mukai, Toshikazu [2 ]
机构
[1] Pioneer Corp, Kofu, Yamanashi 4000053, Japan
[2] ROHM Co Ltd, Kyoto 6158585, Japan
关键词
SPECTROSCOPY; GHZ; GENERATION; RADIATION; THZ; COMMUNICATION; OSCILLATIONS; DEVICES; SILICON; SERIES;
D O I
10.7567/JJAP.55.032201
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report a feasibility study of a terahertz imaging system with resonant tunneling diodes (RTDs) that oscillate at 0.30 THz. A pair of RTDs acted as an emitter and a detector in the system. Terahertz reflection images of opaque samples were acquired with our RTD imaging system. A spatial resolution of 1 mm, which is equal to the wavelength of the RTD emitter, was achieved. The signal-to-noise ratio (SNR) of the reflection image was improved by 6 dB by using polarization optics that reduced interference effects. Additionally, the coherence of the RTD enabled a depth resolution of less than 3 mu m to be achieved by an interferometric technique. Thus, RTDs are an attractive candidate for use in small THz imaging systems. (C) 2016 The Japan Society of Applied Physics
引用
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页数:6
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