Share Email Print

Optical Engineering

Effective receiving area of the antenna-coupled terahertz detector
Author(s): Qingkai Mao; Xuecou Tu; Lei Xu; Chao Wan; Lin Kang; Jian Chen; Peiheng Wu
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In order to accurately characterize the radio frequency (RF) responsivity of the antenna-coupled detector in the terahertz (THz) band, we introduce an iterative deconvolution algorithm to extract the effective receiving area. We use this method to characterize an antenna-coupled Nb 5 N 6 microbolometer as an example. The effective receiving area is approximately 0.7  mm 2 , which is 7.4 times larger than the physical area of the detector. The RF responsivity of the Nb 5 N 6 microbolometer is 480  V/W at 0.28 THz, including the effect of the antenna coupling and the substrate interference. This work offers an effective way to characterize antenna-coupled THz detectors and to analyze the element-to-element spacing along two orthogonal directions in THz focal plane array chips.

Paper Details

Date Published: 27 February 2014
PDF: 6 pages
Opt. Eng. 53(2) 023103 doi: 10.1117/1.OE.53.2.023103
Published in: Optical Engineering Volume 53, Issue 2
Show Author Affiliations
Qingkai Mao, Nanjing Univ. (China)
Xuecou Tu, Nanjing Univ. (China)
Lei Xu, Nanjing Univ. (China)
Chao Wan, Nanjing Univ. (China)
Lin Kang, Nanjing Univ. (China)
Jian Chen, Nanjing Univ. (China)
Peiheng Wu, Nanjing Univ. (China)

© SPIE. Terms of Use
Back to Top