Terahertz Light-Field Imaging
Terahertz Light-Field Imaging
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DOI：
10.1109/tthz.2016.2584861
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发表时间：
2016-09-01
影响因子：
3.2
通讯作者：
Pfeiffer, Ullrich R.
中科院分区：
文献类型：
--
作者：
Jain, Ritesh;Grzyb, Janusz;Pfeiffer, Ullrich R.
光场成像是一种用途广泛的计算方法，传统上仅限于电磁光谱的可见频率范围。本文首次提出了一种太赫兹(THz)辐射光场技术的实现方法。采用硅超半球透镜集成的32×32像素的CMOS机作为太赫兹光场采样器，并对其进行像面扫描，记录来自点太赫兹光源的完整静态光场。已经进行了两个实验，以证明在太赫兹频率上建立光场的可行性。在第一个实验中，记录了一个工作在0.53THz的16像素透镜耦合电源模块的光场，并计算了其辐射方向图。在另一种情况下，演示了基于光场的传输模式成像，该光源基于x48倍增器，基于25-dBI 0.65-THz光源，而不使用外部光列。
Light-field imaging is a highly versatile computational method that has been traditionally limited to the visible frequency range of the electromagnetic spectrum. This paper presents an implementation of the light-field technique in terahertz (THz) radiation for the first time. A silicon hyper-hemispherical lens-integrated 32 x 32 pixel CMOS camera was used as the THz light-field sampler and it was scanned across an image plane to record the complete static light-field from a point THz source. Two experiments have been performed to demonstrate the feasibility of light-fields at THz frequencies. In the first experiment, the light-field from a 16-pixel lens-coupled power source module operating at 0.53 THz was recorded and its radiation pattern was computationally rendered. In the other, light-field based transmission mode imaging was demonstrated for a x 48 multiplier based 25-dBi 0.65-THz source without the use of an external optical train.