Ultrahigh free-electron Kerr nonlinearity in all-semiconductor waveguides for all-optical nonlinear modulation of mid-infrared light
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| Natura: | Recurso digital |
| Lingua: | inglese |
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Zenodo
2025
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| _version_ | 1866902029549436928 |
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| author | Álvarez-Pérez, Gonzalo |
| author_facet | Álvarez-Pérez, Gonzalo |
| contents | <p>Nonlinear optical waveguides, particularly those harnessing the optical Kerr effect, are promising for advancing next-generation photonic technologies. Despite the Kerr effect’s ultrafast response, <span>its reported weak </span><span>nonlinearities to date </span>have hindered practical applications. Here, we explore free-electron-induced Kerr nonlinearities in all-semiconductor waveguides, <span>and we show </span>that longitudinal bulk plasmons—inherently nonlocal excitations—can generate exceptionally strong Kerr nonlinearities. We specifically develop and share here a <strong>nonlinear eigenmode analysis integrated with semiclassical hydrodynamic theory to compute the linear and nonlinear optical responses originating from the quantum behavior of free electrons in heavily doped semiconductors</strong>. These waveguides achieve ultrahigh nonlinear <span>refractive indices </span><span>and </span>nonlinear coefficients while supporting long-propagating modes. Additionally, we confirm the robustness of the nonlinear response under realistic conditions by considering viscoelastic and nonlinear damping mechanisms. Finally, we implement our all-semiconductor waveguides in a Mach-Zehnder interferometer, demonstrating efficient nonlinear modulation of <span>its </span>transmittance spectrum via the free-electron Kerr effect. This work evidences the transformative potential of free-electron nonlinearities in heavily doped semiconductors for photonic integrated circuits, paving the way for scalable on-chip nonlinear nanophotonic systems.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15264605 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Ultrahigh free-electron Kerr nonlinearity in all-semiconductor waveguides for all-optical nonlinear modulation of mid-infrared light Álvarez-Pérez, Gonzalo Plasmonics Nonlinear optics Hydrodynamic theory Heavily doped semiconductors Free-electron nonlinearities Kerr effect Waveguides <p>Nonlinear optical waveguides, particularly those harnessing the optical Kerr effect, are promising for advancing next-generation photonic technologies. Despite the Kerr effect’s ultrafast response, <span>its reported weak </span><span>nonlinearities to date </span>have hindered practical applications. Here, we explore free-electron-induced Kerr nonlinearities in all-semiconductor waveguides, <span>and we show </span>that longitudinal bulk plasmons—inherently nonlocal excitations—can generate exceptionally strong Kerr nonlinearities. We specifically develop and share here a <strong>nonlinear eigenmode analysis integrated with semiclassical hydrodynamic theory to compute the linear and nonlinear optical responses originating from the quantum behavior of free electrons in heavily doped semiconductors</strong>. These waveguides achieve ultrahigh nonlinear <span>refractive indices </span><span>and </span>nonlinear coefficients while supporting long-propagating modes. Additionally, we confirm the robustness of the nonlinear response under realistic conditions by considering viscoelastic and nonlinear damping mechanisms. Finally, we implement our all-semiconductor waveguides in a Mach-Zehnder interferometer, demonstrating efficient nonlinear modulation of <span>its </span>transmittance spectrum via the free-electron Kerr effect. This work evidences the transformative potential of free-electron nonlinearities in heavily doped semiconductors for photonic integrated circuits, paving the way for scalable on-chip nonlinear nanophotonic systems.</p> |
| title | Ultrahigh free-electron Kerr nonlinearity in all-semiconductor waveguides for all-optical nonlinear modulation of mid-infrared light |
| topic | Plasmonics Nonlinear optics Hydrodynamic theory Heavily doped semiconductors Free-electron nonlinearities Kerr effect Waveguides |
| url | https://doi.org/10.5281/zenodo.15264605 |