Chinese Optics Letters, 2012, 10 (11): 111602, Published Online: Oct. 9, 2012  

Dependence of spectroscopic properties on doping content and temperature of bismuth-doped lanthanum aluminosilicate glass Download: 515次

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Abstract
The effects of bismuth doping content and temperature on the absorption property and near-infrared (NIR) luminescence of Bi-doped La2O3-Al2O3-SiO2 (LAS) glasses are presented. The emission intensity reaches the maximum when the Bi2O3 content in 3.0Bi-LAS is 1.83%. The emission spectra reach their peaks at 1 190 and 1 117 nm, with full-width at half-maximum (FWHM) values of 330 and 228 nm under 500 and 700-nm excitations, respectively. As the Bi2O3 content increases, the peak wavelengths and FWHMs of emission bands increase, but their lifetimes decrease. The lifetime of 2.0Bi-LAS is 460 μs at 9 K, and is almost temperature independent until 350 K. The NIR emission of Bi in the system has strong resistance to thermal quenching from 9 to 350 K.

Min Qian, Jimeng Cheng, Lili Hu. Dependence of spectroscopic properties on doping content and temperature of bismuth-doped lanthanum aluminosilicate glass[J]. Chinese Optics Letters, 2012, 10(11): 111602.

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