Grating based plasmonic band gap cavities
| Autor: | Askin Kocabas, Atilla Aydinli, S. Seckin Senlik |
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| Přispěvatelé: | Şenlik, S. Seçkin, Kocabaş, Aşkın, Aydınlı, Atilla |
| Rok vydání: | 2009 |
| Předmět: |
Energy Gap
Plasmons Surface Profiles Materials science genetic structures Cavity Mode Band gap Physics::Optics Effective Index Grating Comparative Studies Optics Cavity Regions Grating Surface Spontaneous emission Electronic band structure Plasmon Band Gaps Q Factor Measurement business.industry Surface plasmon Cavity quantum electrodynamics Bi-harmonic Atomic and Molecular Physics and Optics Bandpass Filters Dielectric Loadings Q factor Gradual Changes Optoelectronics Physics::Accelerator Physics Grating Components Cavity Geometry business Quality Factors Radiation Loss |
| Zdroj: | Optics Express |
| ISSN: | 1094-4087 |
| Popis: | Cataloged from PDF version of article. We report on a comparative study of grating based plasmonic band gap cavities. Numerically, we calculate the quality factors of the cavities based on three types of grating surfaces; uniform, biharmonic and Moiré surfaces. We show that for biharmonic band gap cavities, the radiation loss can be suppressed by removing the additional grating component in the cavity region. Due to the gradual change of the surface profile in the cavity region, Moiré type surfaces support cavity modes with higher quality factors. Experimentally, we demonstrate the existence of plasmonic cavities based on uniform gratings. Effective index perturbation and cavity geometries are obtained by additional dielectric loading. Quality factor of 85 is obtained from the measured band structure of the cavity. © 2009 Optical Society of America. |
| Databáze: | OpenAIRE |
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