Yb3+ blended tellurate glass and its preparing method

Abstract

The present invention is Yb3+ doped tellurate glass and its preparation process. The glass consists of TeO2 60-80 mol%, ZnO 5-15 mol%, WO3 0-25 mol%, La2O3 0-4.5 mol%, Na2O3 0-5 mol%, K2O 0-5 mol%, and Yb2O3 0.5-5 mol%. It is prepared through smelting process, and is colorless, transparent, no defitrification, good in transparency loss resisting performance and excellent in physical and chemical performance. The semiconductor light source pump test of 940 nm band proves its stimulated emission cross section as high as 0.35 sq pm and effective fluorescent line width as high assemble 80 nm. Compared with available technology, the glass of the present invention has the advantages of simple preparation process, high heat stability, great absorption and stimulated emission cross section and wide fluorescent line width. The glass material may be used in high power pulse adjustable laser, micro solid fiber laser, etc.

Description

technical field [0001] The present invention relates to tellurite glass, especially a Yb 3+ Doped tellurite glasses and methods of making them. Background technique [0002] due to Yb 3+ The electronic configuration has only one ground state 2 f 7 / 2 and an excited state 2 f 5 / 2 Compared with other rare earth ions, the excited ions used as lasers have a series of advantages: the absorption band is in the wavelength range of 0.8-1.1 μm, and can be effectively coupled with the InGaAs semiconductor pump source; there is no excited state absorption (ASE), and the light conversion High efficiency; the pump wavelength is very close to the laser output wavelength, and the quantum efficiency can be as high as 90%; there will be no concentration quenching and multiphonon relaxation under high doping concentration; long fluorescence lifetime, wide gain bandwidth, and low heat load Wait. Therefore, since the emergence of high-power Ti:sapphire lasers and laser diodes in the late ...

AI Technical Summary

Problems solved by technology

Yb 3+ Doped tellurite glass has a large emission cross-section and a wide fluorescence linewidth, making it an ideal host material for lasers, but its poor anti-devitrification ab

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