Abstract In this letter, high Q factor microsphere resonators with excellent stability and high damage threshold are fabricated from Tm3+ doped fluorosilicate glasses using the traditional melt-quenching and fiber heating techniques. Intense 1.88 μm photoluminescence and single mode laser emission are obtained under the excitation of an 808 nm laser. The Q factor of the microsphere resonator is measured to be as high as 1.4 × 106. Models for photoluminescence and lasing are proposed using spectroscopic data from the absorption and emission spectra. The excellent resistance to humidity and temperature are characterized from the transmittance spectra under different environmental conditions. Differential thermal analysis (DTA), measured in four different glass samples proves the high damage threshold. The proposed glass microsphere resonator laser can find application in optical sensors and micro lasers, especially in complex environments.

中文翻译：

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具有优异稳定性和高损伤阈值的 Tm3+ 掺杂氟硅酸盐玻璃微球的 1.88 μm 激光发射

摘要 在这封信中，采用传统的熔体淬火和光纤加热技术，由掺 Tm3+ 的氟硅酸盐玻璃制成了具有优异稳定性和高损伤阈值的高 Q 因子微球谐振器。在 808 nm 激光的激发下获得了强烈的 1.88 μm 光致发光和单模激光发射。微球谐振器的 Q 因子经测量高达 1.4 × 106。使用来自吸收和发射光谱的光谱数据提出了光致发光和激光发射模型。从不同环境条件下的透射光谱表征其优异的耐湿性和耐温性。在四种不同的玻璃样品中测量的差热分析 (DTA) 证明了高损伤阈值。