التفاصيل البيبلوغرافية
| العنوان: |
Ultralarge anti-Stokes lasing through tandem upconversion. |
| المؤلفون: |
Sun, Tianying, Chen, Bing, Guo, Yang, Zhu, Qi, Zhao, Jianxiong, Li, Yuhua, Chen, Xian, Wu, Yunkai, Gao, Yaobin, Jin, Limin, Chu, Sai Tak, Wang, Feng |
| المصدر: |
Nature Communications; 2/24/2022, Vol. 13 Issue 1, p1-7, 7p |
| مصطلحات موضوعية: |
PHOTON upconversion, COHERENCE (Optics), TELECOMMUNICATION, ULTRAVIOLET radiation, LIFE sciences, ACTIVE medium, ULTRAVIOLET spectrometry |
| مستخلص: |
Coherent ultraviolet light is important for applications in environmental and life sciences. However, direct ultraviolet lasing is constrained by the fabrication challenge and operation cost. Herein, we present a strategy for the indirect generation of deep-ultraviolet lasing through a tandem upconversion process. A core–shell–shell nanoparticle is developed to achieve deep-ultraviolet emission at 290 nm by excitation in the telecommunication wavelength range at 1550 nm. The ultralarge anti-Stokes shift of 1260 nm (~3.5 eV) stems from a tandem combination of distinct upconversion processes that are integrated into separate layers of the core–shell–shell structure. By incorporating the core–shell–shell nanoparticles as gain media into a toroid microcavity, single-mode lasing at 289.2 nm is realized by pumping at 1550 nm. As various optical components are readily available in the mature telecommunication industry, our findings provide a viable solution for constructing miniaturized short-wavelength lasers that are suitable for device applications. Constructing ultraviolet lasing is of great significance for basic research and medical use. Here the authors present a strategy for generating ultraviolet lasing through a tandem upconversion process with ultralarge anti-Stokes shift (1260 nm). [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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