Germanium Nanoantennas for Plasmon-Enhanced Third Harmonic Generation in the Mid Infrared
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Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium with effective plasma frequencies above 60 THz, corresponding to wavelengths below 5 μm. This technology paves the way for mid-infrared nanoplasmonics with application in integrated telecommunication systems and enhanced molecular sensing in the so-called vibrational fingerprint spectral region [1]. In this work, we demonstrate that Ge antenna structures are also suitable for nonlinear optical processes such as third harmonic generation (THG) in the mid infrared [2], owing to the strong resonant enhancement. Subwavelength-confined light emitters are of high interest for experiments targeting single molecules or other isolated quantum systems [3].
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FISCHER, Marco P., Aaron RIEDE, Alexander GRUPP, Kevin GALLACHER, Jacopo FRIGERIO, Giovanni PELLEGRINI, Michele ORTOLANI, Douglas J. PAUL, Alfred LEITENSTORFER, Daniele BRIDA, 2017. Germanium Nanoantennas for Plasmon-Enhanced Third Harmonic Generation in the Mid Infrared. 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference. Munich, Germany, 25. Juni 2017 - 29. Juni 2017. In: Proceedings 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference. Piscataway, NJ: IEEE, 2017. ISBN 978-1-5090-6736-7. Available under: doi: 10.1109/CLEOE-EQEC.2017.8087670BibTex
@inproceedings{Fischer2017Germa-46319, year={2017}, doi={10.1109/CLEOE-EQEC.2017.8087670}, title={Germanium Nanoantennas for Plasmon-Enhanced Third Harmonic Generation in the Mid Infrared}, isbn={978-1-5090-6736-7}, publisher={IEEE}, address={Piscataway, NJ}, booktitle={Proceedings 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference}, author={Fischer, Marco P. and Riede, Aaron and Grupp, Alexander and Gallacher, Kevin and Frigerio, Jacopo and Pellegrini, Giovanni and Ortolani, Michele and Paul, Douglas J. and Leitenstorfer, Alfred and Brida, Daniele} }
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