4.7 Article

Two-wavelength excitation-driven robust operation of green up-conversion emission in Er3+-doped oxyfluoride glass-ceramic

期刊

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 106, 期 2, 页码 1015-1024

出版社

WILEY
DOI: 10.1111/jace.18841

关键词

glass-ceramics; luminescence; optical modulation; up-conversion

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Efficient optical modulation has great potential for optoelectronics applications, but the weak interaction between photons poses a strong obstacle. In this study, by simultaneously exciting different wavelengths, a fast-slow modulation of green up-conversion luminescence can be achieved in oxyfluoride glass ceramics. The findings show promise for emerging applications in all-optical switching.
Efficient optical modulation enables a significant improvement of optical conversion efficiency and regulation of optical response rate, showing great potential for optoelectronics applications. However, the weak interaction between photons poses a strong obstacle for manipulating photon-photon interactivity. Here, upon simultaneous excitation of 850 and 1550 nm, a fast-slow optical modulation of green up-conversion (UC) luminescence in oxyfluoride glass ceramics containing NaYF4:Er3+ nanocrystals can be achieved. Compared with the sum of luminescence intensity excited by the two single-wavelengths, green UC luminescence excited by simultaneous two-wavelength presents an obvious increase by approximate six times. Interestingly, the response rate of green UC luminescence relies on the pump strategy of two-wavelength excitation, showing as high as two times of the fast-slow response difference. The fast-slow optical modulation of green UC luminescence under two-wavelength excitation is promising for emerging applications in all-optical switching.

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