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Journal of Applied Remote Sensing

Quasioptical terahertz detector based on the series connection of Nb5N6 microbolometers
Author(s): Xuecou Tu; Lei Xu; Qingkai Mao; Chao Wan; Lin Kang; Biaobing Jin; Jian Chen; Peiheng Wu
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Paper Abstract

We present the experimental demonstration of a quasioptical terahertz (THz) detector. It is based on the series connection of three Nb 5 N 6 microbolometers. This detector is of high responsivity and broadband response to THz signals. The maximum optical responsivity is 428  V/W at 0.245 THz and the minimum is 102  V/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 Nb 5 N 6 microbolometers promising for the development of pixels in THz focal-plane arrays.

Paper Details

Date Published: 26 March 2014
PDF: 9 pages
J. Appl. Rem. Sens. 8(1) 084992 doi: 10.1117/1.JRS.8.084992
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
Xuecou Tu, Nanjing Univ. (China)
Lei Xu, Nanjing Univ. (China)
Qingkai Mao, Nanjing Univ. (China)
Chao Wan, Nanjing Univ. (China)
Lin Kang, Nanjing Univ. (China)
Biaobing Jin, Nanjing Univ. (China)
Jian Chen, Nanjing Univ. (China)
Peiheng Wu, Nanjing Univ. (China)

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