Generation of radiation in tunnel-coupled waveguides with positive and negative refractive indices
| Autor: | D. I. Sementsov, Andrei A. Fotiadi, I. O. Zolotovskii, D. A. Korobko |
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| Rok vydání: | 2013 |
| Předmět: |
Distributed feedback laser
Superlens Materials science business.industry Physics::Optics Metamaterial Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics Normalized frequency (fiber optics) Negative refraction Optoelectronics business Step-index profile Refractive index Metamaterial antenna |
| Zdroj: | Optics and Spectroscopy. 114:299-304 |
| ISSN: | 1562-6911 0030-400X |
| DOI: | 10.1134/s0030400x13020318 |
| Popis: | The possibility of generating microwave radiation in tunnel-coupled planar waveguides, one of which is made of a metamaterial and is characterized by a negative refractive index in the corresponding frequency range, while the other waveguide is active and exhibits positive refractive index, is demonstrated. The model of a tunable distributed feedback laser, in which the dependence of the refractive index of the metamaterial on the external magnetic field allows controlling the oscillation frequency, is proposed. |
| Databáze: | OpenAIRE |
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