掺铒卤化物玻璃中通过 Nd3+敏化实现 Er3+ 的 2.7μm 中红外发射增强。
Enhanced mid-infrared emissions of Er3+ at 2.7 μm via Nd3+ sensitization in chalcohalide glass.
机构信息
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China.
出版信息
Opt Lett. 2011 May 15;36(10):1815-7. doi: 10.1364/OL.36.001815.
Nd(3+) sensitized Er(3+):(4)I(13/2) mid-IR emissions around 2.7 μm were investigated in the transparent Ga(2)S(3)-GeS(2)-CsCl chalcohalide glasses for the first time. Remarkably, it is found that Nd(3+) greatly enhances Er(3+) 2.7 μm emission by a maximal 20 times, and depopulates the lower level of Er(3+):(4)I(13/2) for population inversion. Based on Judd-Ofelt theory, the 2.7 μm emission cross section is calculated (as high as 0.66×10(-20) cm(2)) and the gain property of the Er(3+):(4)I(11/2)→(4)I(13/2) transition is discussed. Hopefully, the materials studied here may find potential applications in the fields of fiber amplifiers and mid-IR lasers.
Nd(3+)敏化 Er(3+):(4)I(13/2) 中红外发射在透明 Ga(2)S(3)-GeS(2)-CsCl 硫卤玻璃中首次被研究。值得注意的是，Nd(3+)极大地增强了 Er(3+)的 2.7 μm 发射，最大增强了 20 倍，并使 Er(3+):(4)I(13/2)的低能级去激发，实现粒子数反转。基于 Judd-Ofelt 理论，计算了 2.7 μm 发射截面（高达 0.66×10(-20) cm(2))，并讨论了 Er(3+):(4)I(11/2)→(4)I(13/2)跃迁的增益特性。希望这里研究的材料可能在光纤放大器和中红外激光器领域有潜在的应用。
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