Spontaneous Parametric Down-Conversion from GaAs nanowires at Telecom Wavelength
| Autor: | Grégoire Saerens, Ngoc My Hanh Duong, Alexander S. Solntsev, Artemios Karvounis, Thomas Dursap, Philippe Regreny, Andrea Morandi, Robert J. Chapman, Andreas Maeder, Alexandre Danescu, José Penuelas, Nicolas Chauvin, Rachel Grange |
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| Přispěvatelé: | Costa, Manuel Filipe, Flores-Arias, Maite, Pauliat, Gilles, Segonds, Patricia |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Zdroj: | EPJ Web of Conferences, 266 EOS Annual Meeting (EOSAM 2022) |
| ISSN: | 2100-014X 2101-6275 |
| Popis: | We report on the generation of photon pairs at 1550 nm from free-standing epitaxially grown self-assisted micrometre long GaAs nanowires. The efficiency of the spontaneous parametric down-conversion process has a rate of 320 GHz/Wm normalized to the transmission of the setup, the pump intensity, and the volume of the nanostructure. GaAs is a high index dielectric that can support electromagnetic Mie modes, therefore we model how shorter nanowires could improve the second-harmonic signal and we found that sub-micro long nanowires (600 nm length and 250 nm diameter) can support quality factors up to 15 at the pump wavelength (780 nm). We anticipate that the near field enhancement compared to micrometre long nanowires will boost the second-harmonic generation and, correspondingly, the biphoton rate efficiency. EPJ Web of Conferences, 266 ISSN:2100-014X ISSN:2101-6275 EOS Annual Meeting (EOSAM 2022) |
| Databáze: | OpenAIRE |
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