Topology optimization in nonlinear nanophotonics: from frequency conversion to exceptional points
| Autor: | Alejandro W. Rodriguez, Weiliang Jin, Zin Lin, Adi Pick, Steven G. Johnson, Marko Loncar, Eric Mazur |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Topology optimization Degenerate energy levels Dirac (software) Nanophotonics Physics::Optics Metamaterial 02 engineering and technology 021001 nanoscience & nanotechnology Topology 01 natural sciences Nonlinear system Resonator Optics 0103 physical sciences Photonics 010306 general physics 0210 nano-technology business |
| Zdroj: | Conference on Lasers and Electro-Optics. |
| DOI: | 10.1364/cleo_si.2017.sm2m.1 |
| Popis: | We apply a large-scale inverse design strategy based on topology optimization (TO) toward the automatic discovery of complex nanophotonic structures-new kinds of micropillars, photonic-cyrstal slabs, and waveguides comprising complicated arrangements of subwavelength dielectrics-exhibiting unusual nonlinear and spectral properties. The structures support multiple, tightly confined resonances at far-away wavelengths and exhibit the largest nonlinear confinement factors predicted thus far (oders of magnitude larger than state-of-the-art ring resonators or PhC cavities), leading to highly efficient nonlinear frequency conversion (NFC). The same TO approach can be exploited to design PhCs supporting dual-polarization, dual-wavelength, or highly degenerate Dirac cones, with implications to zero-index metamaterials, topological photonics, and exceptional points (EP). |
| Databáze: | OpenAIRE |
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