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应用Judd-Ofelt理论模型和实验测定,研究了几种掺钕氟化物玻璃的光谱和荧光性质及其与玻璃化学组成的关系。结果表明,钕离子在氟锆酸盐玻璃中的发光性质要优于它在氟铝酸盐玻璃和氟磷酸盐玻璃中的发光性质,并随氟锆酸盐玻璃中氟逐步被氯所取代得到进一步的改善。应用连续浇注法制得了相应玻璃包皮的氟酸盐玻璃光纤预制棒,并拉制出芯径为9μm掺钕氟酸盐玻璃光纤。该光纤在波长为514nm的氢激光或彼长为800nm的钛宝石激光的光泵下。相继在1.05和1.34μm获得了连续激光输出,室温下1.05μm激光的输出功率已达11mW,斜率超过20%。
Judd-Ofelt theoretical model and experimental measurements were used to study the spectral and fluorescence properties of several Nd-doped fluoride glasses and their relationship with the chemical composition of glass. The results show that the luminescent properties of neodymium ions in fluorozirconate glasses are superior to those of neodymium ions in fluoroaluminate glasses and fluorophosphate glasses. With the fluorine in zirconate glasses being gradually replaced by chlorine, Further improvement. The corresponding glass-encased fluorinated glass optical fiber preform was obtained by continuous pouring method, and a neodymium-doped fluorinated glass optical fiber with a core diameter of 9 μm was drawn. The optical fiber is pumped by hydrogen laser light having a wavelength of 514 nm or a titanium sapphire laser having a length of 800 nm. Successive laser outputs were obtained at 1.05 and 1.34μm, respectively. The output power of 1.05μm laser at room temperature reached 11mW and the slope exceeded 20%.