| Presentation | 2015-01-22 Study of Superconducting Mid-infrared Photo-detectors with Nano-antennas Akira KAWAKAMI, Junsei HORIKAWA, Masaharu Hyodo, Shukichi TANAKA, Masanori TAKEDA, Hisashi SHIMAKAGE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have proposed using nano-antennas with superconducting detector to improve the response performance of infrared detectors. Dipole nano-antennas which have an NbN load resistance were fabricated to evaluate the antenna properties. By using EM simulation, the antenna length was set at 2400 nm for the operation around 7-μm-wavelength. The antennas were evaluated by using Fourier transform infrared spectroscopy. In an evaluation of spectral transmission characteristics, clear absorption caused by antenna effects was observed at around 1400 cm^<-1>. The results of the simulation qualitatively agreed with the results of the experiment. The antenna effective area was also evaluated, and the area was estimated to be approximately 5.4 μm^2 at 1420 cm^<-1>. We have fabricated prototype of mid-infrared photo-detectors which were formed with 45 dipole-antennas with an NbN strip. The antennas were placed within an area of 20 × 20 μm^2, and they were connected by bias line in series. By the irradiation of mid-infrared (λ=4.9 μm) light, the responses with high polarization dependencies caused by antenna effect were observed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Detector / Infrared / Nano antenna / NbN / Polarization |
| Paper # | SCE2014-52 |
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| Committee | SCE |
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| Conference Date | 2015/1/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of Superconducting Mid-infrared Photo-detectors with Nano-antennas |
| Sub Title (in English) | |
| Keyword(1) | Detector |
| Keyword(2) | Infrared |
| Keyword(3) | Nano antenna |
| Keyword(4) | NbN |
| Keyword(5) | Polarization |
| 1st Author's Name | Akira KAWAKAMI |
| 1st Author's Affiliation | NICT() |
| 2nd Author's Name | Junsei HORIKAWA |
| 2nd Author's Affiliation | NICT:Ibaraki University |
| 3rd Author's Name | Masaharu Hyodo |
| 3rd Author's Affiliation | Kanazawa University |
| 4th Author's Name | Shukichi TANAKA |
| 4th Author's Affiliation | NICT |
| 5th Author's Name | Masanori TAKEDA |
| 5th Author's Affiliation | Shizuoka University |
| 6th Author's Name | Hisashi SHIMAKAGE |
| 6th Author's Affiliation | Ibaraki University |
| Date | 2015-01-22 |
| Paper # | SCE2014-52 |
| Volume (vol) | vol.114 |
| Number (no) | 406 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |