发光学报, 2014, 35 (4): 454, 网络出版: 2014-05-08
Er3+掺杂硫系玻璃微球在980 nm 激光泵浦下的荧光特性
Fluorescent Characteristics of Er3+ Doped Chalcogenide Glass Microsphere Under 980 nm LD Pumping
掺铒硫系玻璃 微球 光纤锥耦合 形貌共振 Er3+ doped chalcogenide glass microsphere fiber taper coupling morphology of resonance
摘要
采用玻璃粉料高温漂浮熔融法制备了0.9%Er2S3(质量分数)∶75%GeS2-15%Ga2S3-10%CsI(摩尔分数)硫系玻璃微球, 并用熔融拉锥法制备了锥腰直径为2.31 μm的石英光纤锥。将其与直径119 μm的硫系微球进行耦合, 在980 nm 激光泵浦下获得了微球中与Er3+:4I13/2→4I15/2跃迁对应的1.54 μm处的荧光光谱。分析了微球和块状玻璃荧光光谱差异的原因, 并用Mie散射理论公式对微球荧光光谱共振峰间隔进行了计算。共振峰间隔实验结果与理论计算误差最小仅为0.05%, 验证了理论分析的正确性。最后, 讨论了微球峰值间隔与泵浦功率的关系, 排除了泵浦功率对共振峰间隔的影响。
Abstract
Chalcogenide glass microspheres were fabricated by high temperature melting floating glass powder method. The glass composition was 0.9%Er2S3(mass fraction)∶75%GeS2-15%Ga2S3-10%CsI(mole fraction). A quartz fiber taper with a 2.31 μm waist diameter was drew at fuse and used to couple a 119 μm diameter chalcogenide microsphere with a 980 nm LD pumping source. Fluorescence spectra with apparent resonance peaks were observed near 1.54 μm(Er3+:4I13/2→4I15/2). The difference of microsphere and bulk glass fluorescent spectrum was analyzed and the locations and separations of those resonance peaks were calculated using the Mie scatter theory. It is found that the theoretical results match the experimental results well, and the minimum error is only 0.05%. At last, we discussed the relationship of pump power and microsphere fluorescent peak gap, and removed the influence of pump power having on fluorescent peak gap.
吕社钦, 吴越豪, 路来伟, 李超然, 张培晴, 张巍, 戴世勋. Er3+掺杂硫系玻璃微球在980 nm 激光泵浦下的荧光特性[J]. 发光学报, 2014, 35(4): 454. LYU She-qin, WU Yue-hao, LU Lai-wei, LI Chao-ran, ZHANG Pei-qing, ZHANG Wei, DAI Shi-xun. Fluorescent Characteristics of Er3+ Doped Chalcogenide Glass Microsphere Under 980 nm LD Pumping[J]. Chinese Journal of Luminescence, 2014, 35(4): 454.