1. Mid infrared fluorescence characteristics and application of Co2+:ZnS doped chalcogenide glass-ceramics.
- Author
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Gui, Yiming, Zhang, Xusheng, Xia, Kelun, Gan, Haotian, He, Lelu, Guan, Yongnian, Liu, Zijun, Yang, Zhiyong, Wang, Xunsi, Dai, Shixun, and Shen, Xiang
- Subjects
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CHALCOGENIDE glass , *GLASS-ceramics , *FLUORESCENCE , *SEMICONDUCTOR lasers , *REFRACTIVE index , *CHALCOGENIDES , *SUPERCONTINUUM generation - Abstract
A Co2+:ZnS-doped chalcogenide glass with broadband mid-infrared emission was prepared by using a hot uniaxial pressing process. The refractive index difference (Δn) between matrix glass (As 2 S 5) and crystal (Co2+:ZnS) was controlled to be 0.0042 in the emission spectral range of Co2+ to minimize the scattering effect. An ultrabroadband mid-infrared emission of 2–4 μm was observed at room temperature in the samples after excitation by using a commercially available laser diode of 1550 nm. The significant changes in the lifetime and fluorescence intensity of Co2+:ZnS-doped chalcogenide glass were measured in the temperature range of 90–290 K. A resolution of approximately 0.18 K was observed when used as a temperature detector. Furthermore, a gas-sensing device was built by using the strong and broad emissions of the sample, and the detection sensitivity of butane reached 56 ppm. These results show that this glass-ceramics can be used as optical sensing of gas and temperature. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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