Yb^(3+)/Tm^(3+)共掺磷酸盐玻璃的上转换发光性能

Upconversion Luminescence Properties of Yb^(3+)/Tm^(3+)Co-Doped Phosphate Glass

采用高温熔融法制备Yb^(3+)/Tm^(3+)共掺的磷酸盐玻璃,探讨了Tm^(3+)摩尔分数和玻璃基体中Te^(4+)摩尔分数对玻璃上转换发光性能的影响。吸收光谱表明,玻璃中的Yb^(3+)和Tm^(3+)在300~1450 nm波长的吸收位置互不干扰。研究了制备的玻璃样品在980 nm波长激光二极管泵浦下的上转换发光性能。结果表明,Yb^(3+)/Tm^(3+)在476 nm(1G_(4)→3H_(6))、650 nm(1G_(4)→3F_(4))和793 nm(3H_(4)→3H_(6))三个位置有上转换发光峰。其中,793 nm的近红外发光峰最强,476 nm的发光峰强度次之,650 nm的发光峰强度最弱。通过调整Tm^(3+)的摩尔分数和玻璃基质中Te^(4+)的摩尔分数可以实现对上述三个发光峰强度的调制。

In this paper,Yb^(3+)/Tm^(3+)co-doped phosphate glass is prepared using a high-temperature melting method,and the effects of Tm^(3+)mole fraction and Te^(4+) mole fraction in the glass matrix on the upconversion luminescence properties of the glass are discussed.The absorption spectrum shows that the absorption positions of Yb^(3+)and Tm^(3+)ions in the glass do not interfere with each other at the wavelength of 300‒1450 nm.The upconversion luminescence properties of the asprepared glass samples under 980 nm wavelength laser diode pumping are investigated.The results indicate that Yb^(3+)/Tm^(3+)has upconversion luminescence peaks at 476 nm(1G_(4)→3H_(6)),650 nm(1G_(4)→3F_(4)),and 793 nm(3H_(4)→3H_(6)),among which the near-infrared luminescence peak at 793 nm is the strongest.The luminescence intensity at 476 nm is the next highest and the lowest at 650 nm.The intensity of the three abovementioned luminescent peaks can be tuned by adjusting the Tm^(3+)mole fraction and the Te^(4+) mole fraction in the glass matrix.