Special Section on Advances in Infrared Remote Sensing and Instrumentation

Quasioptical terahertz detector based on the series connection of Nb5N6 microbolometers

[+] Author Affiliations
Xuecou Tu

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Lei Xu

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Qingkai Mao

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Chao Wan

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Lin Kang

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Biaobing Jin

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Jian Chen

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

Peiheng Wu

Nanjing University, Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing 210093, China

J. Appl. Remote Sens. 8(1), 084992 (Mar 26, 2014). doi:10.1117/1.JRS.8.084992
History: Received December 3, 2013; Revised January 26, 2014; Accepted February 26, 2014
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Abstract.  We present the experimental demonstration of a quasioptical terahertz (THz) detector. It is based on the series connection of three Nb5N6 microbolometers. This detector is of high responsivity and broadband response to THz signals. The maximum optical responsivity is 428V/W at 0.245 THz and the minimum is 102V/W at 0.367 THz. The thermal time constant of the detector has been demonstrated to be 1.3 μs, which is similar to the ones obtained for single-element microbolometers. These results make arrays of antenna-coupled Nb5N6 microbolometers promising for the development of pixels in THz focal-plane arrays.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Xuecou Tu ; Lei Xu ; Qingkai Mao ; Chao Wan ; Lin Kang, et al.
"Quasioptical terahertz detector based on the series connection of Nb5N6 microbolometers", J. Appl. Remote Sens. 8(1), 084992 (Mar 26, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.084992


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