دورية أكاديمية
Continuous-wave second-harmonic generation in the far-UVC pumped by a blue laser diode
| العنوان: | Continuous-wave second-harmonic generation in the far-UVC pumped by a blue laser diode |
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| المؤلفون: | Eric J. Stanton, Peter Tønning, Emil Z. Ulsig, Stig Calmar, Maiya A. Stanton, Simon T. Thomsen, Kevin B. Gravesen, Peter Johansen, Nicolas Volet |
| المصدر: | Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024) |
| بيانات النشر: | Nature Portfolio, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Abstract Far-UVC light in the wavelength range of 200–230 nm has attracted renewed interest because of its safety for human exposure and effectiveness in inactivating pathogens. Here we present a compact solid-state far-UVC laser source based on second-harmonic generation (SHG) using a low-cost commercially-available blue laser diode pump. Leveraging the high intensity of light in a nanophotonic waveguide and heterogeneous integration, our approach achieves Cherenkov phase-matching across a bonded interface consisting of a silicon nitride (SiN) waveguide and a beta barium borate (BBO) nonlinear crystal. Through systematic investigations of waveguide dimensions and pump power, we analyze the dependencies of Cherenkov emission angle, conversion efficiency, and output power. Experimental results confirm the feasibility of generating far-UVC, paving the way for mass production in a compact form factor. This solid-state far-UVC laser source shows significant potential for applications in human-safe disinfection, non-line-of-sight free-space communication, and deep-UV Raman spectroscopy. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| العلاقة: | https://doaj.org/toc/2045-2322Test |
| DOI: | 10.1038/s41598-024-53144-7 |
| الوصول الحر: | https://doaj.org/article/5b93c9e31ff544079cefd5155b4e95d3Test |
| رقم الانضمام: | edsdoj.5b93c9e31ff544079cefd5155b4e95d3 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-024-53144-7 |