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Effect of various alkaline-earth metal oxides on the broadband infrared luminescence from bismuth-doped silicate glasses

机译:各种碱土金属氧化物对铋掺杂硅酸盐玻璃宽带红外发光的影响

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We report on the effect of various alkaline-earth metal oxides on the broadband infrared luminescence covering 1000-1600 nm wavelength region from bismuth-doped silicate glasses. The full width at half maximum (FWHM) of the infrared luminescence and the fluorescent lifetime is more than 200 nm and 400 mu s, respectively. The fluorescent intensity decreases with increasing basicity of host glasses. Besides the broadband infrared luminescence, luminescence centered at 640 nm was also observed, which should be ascribed to Bi2+ rather than to the familiar Bi3+. We suggest that the infrared luminescence should be assigned to the X-2 (2)Pi (3/2) -> X-1 (2)Pi(1/2) transition of BiO molecules dispersed in the host glasses. (c) 2006 Elsevier Ltd. All rights reserved.
机译:我们报告了各种碱土金属氧化物对掺铋硅酸盐玻璃在1000-1600 nm波长范围内的宽带红外发光的影响。红外发光的半峰全宽(FWHM)和荧光寿命分别大于200 nm和400μs。荧光强度随着宿主玻璃碱度的增加而降低。除了宽带红外发光以外,还观察到了以640 nm为中心的发光,这应该归因于Bi2 +,而不是熟悉的Bi3 +。我们建议将红外发光分配给分散在宿主玻璃中的BiO分子的X-2(2)Pi(3/2)-> X-1(2)Pi(1/2)过渡。 (c)2006 Elsevier Ltd.保留所有权利。

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