Abstract
H-shaped resonant optical antennas are proposed by adding resonant strips at the ends of arms of short dipole antennas. Numerical
simulations using finite-difference time-domain method show that the H-shaped antennas present greater electric field enhancement
compared with optical dipole antennas at the same resonant wavelength. The slot coupling between the two arms also results
in a smaller full width at half maximum of the scattering spectra. Two field-enhancing mechanisms are found to decide the
resonant properties of the H-shaped antennas. The influence of the geometry is studied.
simulations using finite-difference time-domain method show that the H-shaped antennas present greater electric field enhancement
compared with optical dipole antennas at the same resonant wavelength. The slot coupling between the two arms also results
in a smaller full width at half maximum of the scattering spectra. Two field-enhancing mechanisms are found to decide the
resonant properties of the H-shaped antennas. The influence of the geometry is studied.
- Content Type Journal Article
- Pages 1-5
- DOI 10.1007/s11468-011-9268-6
- Authors
- Xu Han, State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871 People’s Republic of China
- Xiang Ji, State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871 People’s Republic of China
- Hanqing Wen, State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871 People’s Republic of China
- Jiasen Zhang, State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing, 100871 People’s Republic of China
- Journal Plasmonics
- Online ISSN 1557-1963
- Print ISSN 1557-1955
No comments:
Post a Comment