摘要
制备了用于 1.5μm光波导放大器高浓度掺杂 Er3+的氟铝酸盐、氟锆酸盐及磷酸盐玻璃。在 0 .80μm和 0 .98μm连续激光二极管激发下分析比较了这三种玻璃 1.5μm发射的光谱特性、浓度猝灭及其机制。研究表明 :由于在 0 .98μm激发下 ,激发态吸收较 0 .80μm激发下小得多 ,因而其 1.5μm荧光发射量子效率也比 0 .80μm激发下高得多 ;氟铝酸盐玻璃具有最大的荧光强度和最小的浓度猝灭效应 ,是理想的 1.
High erbium doped fluoroaluminate, fluorozirconate and phosphate glasses were melt for waveguide amplifiers at 1.5 μm. The spectroscopic properties, concentration quenching and its mechanism were investigated and compared in these glasses with excitation of laser diode operating at 0.80 μm and 0.98 μm. The experimental results indicate that the quantum efficiency for the emission at 1.5 μm is higher upon excitation at 0.98 μm than that at 0.80 μm, owing to the much weaker excited state absorption (ESA) compared with those of excitation at 0.80 μm. In addition to the solvency of high rare earth concentration, Er 3+ doped fluoroaluminate glass has a much higher quantum efficiency and stronger fluorescence for the 4I 13/2 → 4I 15/2 emission at 1.54 μm than Er 3+ doped ZBLAN and PE glasses, and also has the smallest concentration quenching in these glasses. It can be considered to be an excellent host for waveguide amplifiers at 1.5 μm.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2000年第12期1688-1693,共6页
Acta Optica Sinica
关键词
高浓度
光波导放大器
饵
掺杂
玻璃
highly doped Er 3+ , 1.5 μm emission, waveguide amplifier|
