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Detection and upconversion of three-dimensional MMW/THz images to the visible

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Abstract

We present an inexpensive technique to obtain a three-dimensional (3D) millimeter wave (MMW) and terahertz (THz) image using upconversion. In this work we describe and demonstrate a method for upconversion of MMW/THz radiation to the visual band using a very inexpensive miniature glow discharge detector (GDD) and a silicon photodetector. We present MMW/THz upconversion images based on measuring the visual light emitting from the GDD rather than its electrical current. The results show better response time and better sensitivity compared to the electronic detection performed previously. Furthermore, in this work we perform frequency modulation continuous wave (FMCW) radar detection based on this method using a GDD lamp, with a photodetector to measure GDD light emission. By using FMCW detection, the range in addition to the intensity at each pixel can be obtained, thus yielding the 3D image. The GDD acts as a heterodyne mixer not only electronically but also optically. Thesuggested 3D upconversion technique using the GDD is simple and inexpensive and has better performance compared to other MMW/THz imaging systems suggested in the literature. This method provides minimum detectable signal power that is about 6 orders of magnitude better than similar plasma systems due to the very largeinternal signal gain deriving from the much smaller electrode separation and resulting in much higher plasma electric field.

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DOI:10.1364/prj.4.000306

基金项目:North Atlantic Treaty Organization (NATO); Science for Peace and Security (SPS) Program (MD.SFPP 984775).

收稿日期:2016-08-15

录用日期:2016-10-02

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Avihai Aharon (Akram):Department of Electrical and Electronic Engineering, Ariel University, Ariel, IsraelDepartment of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Daniel Rozban:Department of Electrical and Electronic Engineering, Ariel University, Ariel, IsraelDepartment of Electro-Optical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Avi Klein:Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
Amir Abramovich:Department of Electrical and Electronic Engineering, Ariel University, Ariel, Israel
Yitzhak Yitzhaky:Department of Electro-Optical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Natan S. Kopeika:Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva, IsraelDepartment of Electro-Optical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel

联系人作者:Avihai Aharon (Akram)(avihaiak@gmail.com)

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引用该论文

Avihai Aharon (Akram), Daniel Rozban, Avi Klein, Amir Abramovich, Yitzhak Yitzhaky, and Natan S. Kopeika, "Detection and upconversion of three-dimensional MMW/THz images to the visible," Photonics Research 4(6), 306-312 (2016)

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