High efficiency second and third harmonic generation from magnetic metamaterials by using a grating
| Autor: | Iman Sajedian, Junsuk Rho, Abdolnasser Zakery |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Physics::Optics Second-harmonic generation Nonlinear optics Metamaterial 02 engineering and technology Grating Physics::Classical Physics 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Resonator Optics Amplitude 0103 physical sciences Harmonic Optoelectronics Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology business Absorption (electromagnetic radiation) |
| Zdroj: | Optics Communications. 397:17-21 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2017.03.068 |
| Popis: | Metamaterials can be used to generate harmonic signals in small thicknesses, but they suffer from low efficiency. Here, we introduce a new method for amplifying second and third harmonic generation from magnetic metamaterials. We show numerically that by using a grating structure under the metamaterial, the grating and the metamaterial form a resonator which leads to a higher absorption in the metamaterial. By this method we could increase the absorption of the structure in the magnetic resonance up to 25% of the initial value. This leads to the generation of second and third harmonic signals with a higher efficiency from this metamaterial-based nonlinear media. We confirmed this idea in the nanostrip metamaterials and saw the amplitude of the second harmonic generation was doubled and the amplitude of the third harmonic generation increased by a factor of 4 in comparison to the same structure without grating. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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