Intense 1.54 μm fluorescence of Er3+/Yb3+ codoped phosphate glass and the three-photon phenomenon of near infrared upconversion luminescence
Intense 1.54 μm fluorescence of Er3+/Yb3+ codoped phosphate glass and the three-photon phenomenon of near infrared upconversion luminescence
复制标题
DOI：
10.1063/1.3294611
复制
发表时间：
2010-02
影响因子：
3.2
通讯作者：
Lanjun Luo;F. Song;Xiaochen Yu;Wentao Wang;Chengguo Ming;Lin Han;Yin Yu;Hao Wu;Jianguo Tian
中科院分区：
文献类型：
--
作者：
Lanjun Luo;F. Song;Xiaochen Yu;Wentao Wang;Chengguo Ming;Lin Han;Yin Yu;Hao Wu;Jianguo Tian
采用高温熔融法制备了Er 3+和Yb 3+共掺的P2 O 5-CaO-Na 2 O透明玻璃。在975 nm激光二极管激发下，观察到了较强的近红外和可见光上转换发光，并对发光过程进行了详细的解释。对于1.54 μm波段，计算的峰值发射截面为1.04×10−20 cm 2，优于锗酸盐、碲酸盐、硅酸盐和其他磷酸盐玻璃。在828 nm附近的近红外上转换发射包含双光子和三光子过程，这是由S43/2→I413/2跃迁引起的，它增强了1.54 μm激光发射的上能级布居，减少了上转换能量损失。有效的近红外荧光表明Er ~（3+）/Yb ~（3+）共掺磷酸盐玻璃是一种很有前途的激光和放大材料。
Transparent P2O5–CaO–Na2O glasses codoped with Er3+ and Yb3+ ions were fabricated by high-temperature melting technique. Strong near infrared and visible upconversion luminescence were observed under 975 nm laser diode excitation, and the luminescence processes were explained in details. For 1.54 μm band, the calculated peak emission cross sections is 1.04×10−20 cm2, and it is better than that in germinate, tellurite, silicate, and other phosphate glasses. The near infrared upconversion emission around 828 nm contains two-photon and three-photon processes, and it is attributed to the transition S43/2→I413/2, which enhances the population of the upper level for 1.54 μm laser emission and reduces the energy loss due to upconversion. Efficient near infrared fluorescence indicates Er3+/Yb3+ codoped phosphate glass is a promising laser and amplifier material.