Journal
INFRARED PHYSICS & TECHNOLOGY
Volume 67, Issue -, Pages 21-24Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.infrared.2014.07.001
Keywords
Antenna; Antenna impedance; Detector; FUR; Infrared
Categories
Funding
- JSPS KAKENHI Grant [24360142, 25630156]
- Grants-in-Aid for Scientific Research [25630156] Funding Source: KAKEN
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To improve the response performance of superconducting infrared detectors, we propose using a photonic antenna with a micro-detector in conjunction with a nano-structure. In this paper, we report evaluation results that show the basic characteristics of a photonic antenna in the mid-infrared region. The antenna consists of a nano-slot antenna and a thin-film load resistance placed in the center of the antenna. The antennas were designed for operation at approximately several tens of THz by using an electromagnetic simulator. Through measurements of the spectral reflectance characteristics, clear absorptions caused by the antenna properties were observed at approximately 50 THz, and high polarization dependencies were also observed. The results of the simulation qualitatively agreed with the results of the experiment. The effective area of the antenna was also evaluated and was found to be approximately 3.5 mu m(2) at 54 THz. (C) 2014 Elsevier B.V. All rights reserved.
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