Origin of optical nonlinearity in plasmonic semiconductor nanostructures
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| Autores principales: | , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| author | Rossetti, Andrea Hu, Huatian Venanzi, Tommaso Bousseksou, Adel De Luca, Federico Deckert, Thomas Giliberti, Valeria Pea, Marialilia Sagnes, Isabelle Beaudoin, Gregoire Biagioni, Paolo Baù, Enrico Maier, Stefan A. Tittl, Andreas Brida, Daniele Colombelli, Raffaele Ortolani, Michele Ciracì, Cristian |
| author_facet | Rossetti, Andrea Hu, Huatian Venanzi, Tommaso Bousseksou, Adel De Luca, Federico Deckert, Thomas Giliberti, Valeria Pea, Marialilia Sagnes, Isabelle Beaudoin, Gregoire Biagioni, Paolo Baù, Enrico Maier, Stefan A. Tittl, Andreas Brida, Daniele Colombelli, Raffaele Ortolani, Michele Ciracì, Cristian |
| contents | The development of nanoscale nonlinear elements in photonic integrated circuits is hindered by the physical limits to the nonlinear optical response of dielectrics, which requires that the interacting waves propagate in transparent volumes for distances much longer than their wavelength. Here we present experimental evidence that optical nonlinearities in doped semiconductors are due to free-electron and their efficiency could exceed by several orders of magnitude that of conventional dielectric nonlinearities. Our experimental findings are supported by comprehensive computational results based on the hydrodynamic modeling, which naturally includes nonlocal effects, of the free-electron dynamics in heavily doped semiconductors. By studying third-harmonic generation from plasmonic nanoantenna arrays made out of heavily n-doped InGaAs with increasing levels of free-carrier density, we discriminate between hydrodynamic and dielectric nonlinearities. As a result, the value of maximum nonlinear efficiency as well as its spectral location can now be controlled by tuning the doping level. Having employed the common material platform InGaAs/InP that supports integrated waveguides, our findings pave the way for future exploitation of plasmonic nonlinearities in all-semiconductor photonic integrated circuits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_15443 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Origin of optical nonlinearity in plasmonic semiconductor nanostructures Rossetti, Andrea Hu, Huatian Venanzi, Tommaso Bousseksou, Adel De Luca, Federico Deckert, Thomas Giliberti, Valeria Pea, Marialilia Sagnes, Isabelle Beaudoin, Gregoire Biagioni, Paolo Baù, Enrico Maier, Stefan A. Tittl, Andreas Brida, Daniele Colombelli, Raffaele Ortolani, Michele Ciracì, Cristian Optics Mesoscale and Nanoscale Physics The development of nanoscale nonlinear elements in photonic integrated circuits is hindered by the physical limits to the nonlinear optical response of dielectrics, which requires that the interacting waves propagate in transparent volumes for distances much longer than their wavelength. Here we present experimental evidence that optical nonlinearities in doped semiconductors are due to free-electron and their efficiency could exceed by several orders of magnitude that of conventional dielectric nonlinearities. Our experimental findings are supported by comprehensive computational results based on the hydrodynamic modeling, which naturally includes nonlocal effects, of the free-electron dynamics in heavily doped semiconductors. By studying third-harmonic generation from plasmonic nanoantenna arrays made out of heavily n-doped InGaAs with increasing levels of free-carrier density, we discriminate between hydrodynamic and dielectric nonlinearities. As a result, the value of maximum nonlinear efficiency as well as its spectral location can now be controlled by tuning the doping level. Having employed the common material platform InGaAs/InP that supports integrated waveguides, our findings pave the way for future exploitation of plasmonic nonlinearities in all-semiconductor photonic integrated circuits. |
| title | Origin of optical nonlinearity in plasmonic semiconductor nanostructures |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.15443 |