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Analysis of a Plasmonic Pole-Absorber Using a Periodic Structure
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A plasmonic black pole (PBP) consisting of a series of touching spherical metal surfaces is analyzed using the finite-difference time-domain (FDTD) method with the periodic boundary condition. First, the wavelength characteristics of the PBP are studied under the assumption that the PBP is omnidirectionally illuminated. It is found that partial truncation of each metal sphere reduces the reflectivity over a wide wavelength range. Next, we consider the case where the PBP is illuminated with a cylindrical wave from a specific direction. It is shown that an absorptivity of more than 80% is obtained over a wavelength range of λ=500 nm to 1000 nm. Calculation regarding the Poynting vector distribution also shows that the incident wave is bent and absorbed towards the center axis of the PBP.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E101-C No.7 pp.495-500
- Publication Date
- 2018/07/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E101.C.495
- Type of Manuscript
- Special Section INVITED PAPER (Special Section on Distinguished Papers in Photonics)
- Category
Authors
Junji YAMAUCHI
Hosei University
Shintaro OHKI
Hosei University
Yudai NAKAGOMI
Hosei University
Hisamatsu NAKANO
Hosei University
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Junji YAMAUCHI, Shintaro OHKI, Yudai NAKAGOMI, Hisamatsu NAKANO, "Analysis of a Plasmonic Pole-Absorber Using a Periodic Structure" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 7, pp. 495-500, July 2018, doi: 10.1587/transele.E101.C.495.
Abstract: A plasmonic black pole (PBP) consisting of a series of touching spherical metal surfaces is analyzed using the finite-difference time-domain (FDTD) method with the periodic boundary condition. First, the wavelength characteristics of the PBP are studied under the assumption that the PBP is omnidirectionally illuminated. It is found that partial truncation of each metal sphere reduces the reflectivity over a wide wavelength range. Next, we consider the case where the PBP is illuminated with a cylindrical wave from a specific direction. It is shown that an absorptivity of more than 80% is obtained over a wavelength range of λ=500 nm to 1000 nm. Calculation regarding the Poynting vector distribution also shows that the incident wave is bent and absorbed towards the center axis of the PBP.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.495/_p
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@ARTICLE{e101-c_7_495,
author={Junji YAMAUCHI, Shintaro OHKI, Yudai NAKAGOMI, Hisamatsu NAKANO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Analysis of a Plasmonic Pole-Absorber Using a Periodic Structure},
year={2018},
volume={E101-C},
number={7},
pages={495-500},
abstract={A plasmonic black pole (PBP) consisting of a series of touching spherical metal surfaces is analyzed using the finite-difference time-domain (FDTD) method with the periodic boundary condition. First, the wavelength characteristics of the PBP are studied under the assumption that the PBP is omnidirectionally illuminated. It is found that partial truncation of each metal sphere reduces the reflectivity over a wide wavelength range. Next, we consider the case where the PBP is illuminated with a cylindrical wave from a specific direction. It is shown that an absorptivity of more than 80% is obtained over a wavelength range of λ=500 nm to 1000 nm. Calculation regarding the Poynting vector distribution also shows that the incident wave is bent and absorbed towards the center axis of the PBP.},
keywords={},
doi={10.1587/transele.E101.C.495},
ISSN={1745-1353},
month={July},}
Copy
TY - JOUR
TI - Analysis of a Plasmonic Pole-Absorber Using a Periodic Structure
T2 - IEICE TRANSACTIONS on Electronics
SP - 495
EP - 500
AU - Junji YAMAUCHI
AU - Shintaro OHKI
AU - Yudai NAKAGOMI
AU - Hisamatsu NAKANO
PY - 2018
DO - 10.1587/transele.E101.C.495
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2018
AB - A plasmonic black pole (PBP) consisting of a series of touching spherical metal surfaces is analyzed using the finite-difference time-domain (FDTD) method with the periodic boundary condition. First, the wavelength characteristics of the PBP are studied under the assumption that the PBP is omnidirectionally illuminated. It is found that partial truncation of each metal sphere reduces the reflectivity over a wide wavelength range. Next, we consider the case where the PBP is illuminated with a cylindrical wave from a specific direction. It is shown that an absorptivity of more than 80% is obtained over a wavelength range of λ=500 nm to 1000 nm. Calculation regarding the Poynting vector distribution also shows that the incident wave is bent and absorbed towards the center axis of the PBP.
ER -
English
