论文部分内容阅读
探讨了以808 nm波长激光作为泵浦源时,铒铥共掺钨碲酸盐光纤的近红外发射光谱。通过调整光纤长度与泵浦功率,在Er2O3与Tm2O3掺杂浓度分别为0.3%(质量分数,下同)和1.0%的10cm长钨碲酸盐光纤中获得了半高宽(FWHM)约130nm的宽带发射光谱。该宽带发射光谱由铒离子在4I13/2→4I15/2的1.52μm发光与铥离子3H4→3F4的1.45μm发光组成。铒、铥离子间的能量转移过程在发光机制中扮演重要角色。此光纤有望作为1400~1 600 nm光纤低损耗通信波段的宽带光源及宽带光纤放大器增益材料。
The near-infrared emission spectra of erbium-doped codoped tellurite fiber with 808 nm wavelength laser as pump source were discussed. By adjusting the fiber length and pumping power, a FWHM of about 130 nm was obtained in a 10 cm-long fiber with Er2O3 and Tm2O3 doping concentrations of 0.3% (mass fraction respectively) and 1.0% Broadband emission spectrum. This broad band emission spectrum consists of the luminescence of erbium ions at 1.52 μm of 4I13 / 2 → 4I15 / 2 and 1.45 μm luminescence of the ion of 3H4 → 3F4. The energy transfer between erbium and gallium ions plays an important role in the luminescence mechanism. This fiber is expected as a 1400 ~ 1 600 nm optical fiber low-loss broadband communication band broadband optical amplifier and gain material.