Compact and inexpensive continuous-wave subterahertz imaging system with a fiber-coupled multimode laser diode
Compact and inexpensive continuous-wave subterahertz imaging system with a fiber-coupled multimode laser diode
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DOI：
10.1063/1.2730739
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发表时间：
2007-04
影响因子：
4
通讯作者：
K. Shibuya;M. Tani;M. Hangyo;O. Morikawa;H. Kan
中科院分区：
文献类型：
--
作者：
K. Shibuya;M. Tani;M. Hangyo;O. Morikawa;H. Kan
作者演示了一种使用光纤耦合多模激光二极管（MLD）和光导天线的亚太赫兹连续波成像系统。太赫兹波的产生是基于在MLD的同时振荡的纵向模式之间的光混合。由于使用光纤耦合MLD作为光源，该系统结构紧凑且价格低廉。利用产生的太赫兹波的近单色特性，通过测量延迟线上适当两点的信号，获得特定频率下的幅值和相位信息。
The authors demonstrate a continuous-wave subterahertz imaging system using a fiber-coupled multimode laser diode (MLD) and photoconductive antennas. The terahertz wave generation is based on photomixing between simultaneously oscillating longitudinal modes of the MLD. The system is compact and inexpensive since a fiber-coupled MLD is used as a light source. By using the nearly monochromatic property of the generated terahertz wave, both amplitude and phase information at a specific frequency are obtained by measuring the signal at appropriate two points on the delay line.