Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
Opt Lett. 2011 Jan 15;36(2):109-11. doi: 10.1364/OL.36.000109.
This work reports the intense emission at 2.7 μm in a Er(3+)/Pr(3+)-codoped fluorophosphate (FP) host glass. This FP glass shows good thermal stability and high transmittance around 3 μm. The emission characteristic and energy transfer upon excitation of a conventional 980 nm laser diode are investigated. The prepared glass possesses higher spontaneous transition probability (22.16s(-1)) along with a larger calculated emission cross section (6.57 ± 0.11) × 10(-21) cm(2) corresponding to the laser transition (4)I(11/2)→(4)I(13/2). In addition, the effect of Pr(3+) codoping on the 2.7 μm photoluminescence in FP glass is demonstrated. Hence, the advantageous spectroscopic characteristics of Er(3+)/Pr(3+)-codoped FP glass together with the outstanding thermal property indicate that this kind of glass may become an attractive host for developing solid-state lasers at around 2.7 μm.
本文报道了在掺铒/掺镨氟磷酸盐（FP）基质玻璃中观察到 2.7μm 处的强发射。该 FP 玻璃在 3μm 附近表现出良好的热稳定性和高透过率。研究了在常规 980nm 激光二极管激发下的发射特性和能量传递。所制备的玻璃具有更高的自发跃迁概率（22.16s(-1)），以及更大的计算发射截面（6.57 ± 0.11）×10(-21)cm(2)，对应于激光跃迁（4）I(11/2)→(4)I(13/2)。此外，还证明了 Pr(3+)共掺杂对 FP 玻璃中 2.7μm 光致发光的影响。因此，掺铒/掺镨氟磷酸盐玻璃具有优越的光谱特性和出色的热性能，表明这种玻璃可能成为开发 2.7μm 附近固态激光器的理想基质。
