InGaAs-based bow-tie diode for spectroscopic terahertz imaging

被引:45
|
作者
Kasalynas, I. [1 ]
Venckevicius, R. [1 ]
Seliuta, D. [1 ]
Grigelionis, I. [1 ]
Valusis, G. [1 ]
机构
[1] Ctr Phys Sci & Technol, Inst Semicond Phys, LT-01108 Vilnius, Lithuania
关键词
TIME-DOMAIN SPECTROSCOPY; ROOM-TEMPERATURE; EXPLOSIVES; ARRAY;
D O I
10.1063/1.3658017
中图分类号
O59 [应用物理学];
学科分类号
摘要
Suitability of InGaAs-based bow-tie diodes for a spectroscopic terahertz imaging is demonstrated by inspecting explosive simulators packed in a thick plastic container. The transmission images were obtained within the frequency range of 0.58-2.52 THz at room temperature using optimized bow-tie diode connection scheme. Content of sucrose and tartaric acid in the test samples was discriminated. Measured absorbance was found to be in a good correlation with Fourier spectroscopy data. Performance of room temperature THz imaging using the bow-tie diode was compared versus a commercial pyro-electric sensor. (C) 2011 American Institute of Physics. [doi:10.1063/1.3658017]
引用
收藏
页数:6
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