Evaluation of detectable angle of mid-infrared slot antennas

29th International Symposium on Superconductivity

Obara, R.^1 ; Horikawa, J.^2 ; Shimakage, H.^1 ; Kawakami, A.^3

Graduate School of Science and Engineering, Ibaraki University, Hitachi, Ibaraki

316-8511, Japan^1

National Institute of Technology, Fukui College, Sabae, Fukui

916-0064, Japan^2

National Institute of Information and Communications Technology, Kobe, Hyogo

651-2492, Japan^3

关键词: Angular dependence;    Antenna properties;    Directivity;    Measurement system;    NbN thin film;    Polarization angle;    Polarization dependence;    Radio frequencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012080/pdf
DOI  :  10.1088/1742-6596/871/1/012080

来源: IOP

【 摘 要 】

For evaluations of a mid-infrared (MIR) detectors with antenna, we constructed an angular dependence measurement system of the antenna properties. The fabricated MIR detector consisted of twin slot antennas and a bolometer. The area of the slot antennas was designed to be 2.6 × 0.2 μm2as to resonate at 61 THz, and they were located parallel and separated 1.6 μm each other. The bolometer was fabricated using by a 7.0-nm thick NbN thin film, and located at the center of the twin antennas. We measured polarization angle dependence and directivity, and showed that the MIR antennas have polarization dependence and directivity like radiofrequency antennas.