期刊
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
卷 6, 期 5, 页码 649-657出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TTHZ.2016.2584861
关键词
Computational imaging; light-field; plenoptics; radiation pattern; silicon lens; terahertz (THz); transmission-mode imaging
资金
- University of Wuppertal, Wuppertal, Germany
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.
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