| Autor: |
Mastalieva Viktoriia, Neplokh Vladimir, Aybush Arseniy, Stovpiaga Ekaterina, Eurov Daniil, Vinnichenko Maksim, Karaulov Danila, Kirillenko Demid, Mozharov Alexey, Sharov Vladislav, Kolchanov Denis, Machnev Andrey, Golubev Valery, Smirnov Alexander, Ginzburg Pavel, Makarov Sergey, Kurdyukov Dmitry, Mukhin Ivan |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Nanophotonics, Vol 13, Iss 18, Pp 3299-3309 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2192-8614 |
| DOI: |
10.1515/nanoph-2024-0218 |
| Popis: |
Efficient second harmonic generation and broad-band photoluminescence from deeply subwavelength and nontoxic nanoparticles is essential for nanophotonic applications. Here, we explore nonlinear optical response from mesoporous Si/SiO2, SiO2, and Si nanoparticles, considering various fabrication and treatment procedures. We show that thermal annealing (including femtosecond laser treatment) of mesoporous Si/SiO2 nanoparticles provides the transformation of Si phase from amorphous to crystalline, enhancing the second harmonic and nonlinear photoluminescent response. Notably, the SiO2 mesoporous frame of the considered Si/SiO2 nanoparticles plays a dual positive role for the nonlinear process: it stabilizes the Si material, and SiO2:OH− material has a second-order nonlinearity itself and impacts to the observed second harmonic signal. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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