Phase-matched third-harmonic generation in silicon nitride waveguides
| Autor: | Vijayakumar Surendar, Vyas Kaustubh, Espinosa Daniel H. G., Reshef Orad, Song Meiting, Awan Kashif Masud, Choudhary Saumya, Cardenas Jaime, Boyd Robert W., Dolgaleva Ksenia |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Nanophotonics, Vol 13, Iss 18, Pp 3385-3393 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2192-8614 2024-0120 |
| DOI: | 10.1515/nanoph-2024-0120 |
| Popis: | Third-harmonic generation (THG) in silicon nitride waveguides is an ideal source of coherent visible light, suited for ultrafast pulse characterization, telecom signal monitoring and self-referenced comb generation due to its relatively large nonlinear susceptibility and CMOS compatibility. We demonstrate third-harmonic generation in silicon nitride waveguides where a fundamental transverse mode at 1,596 nm is phase-matched to a TM02 mode at 532 nm, confirmed by the far-field image. We experimentally measure the waveguide width-dependent phase-matched wavelength with a peak-power-normalized conversion efficiency of 5.78 × 10−7 %/W2 over a 660-μm-long interaction length. |
| Databáze: | Directory of Open Access Journals |
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