Abstract
A multidisciplinary approach for the production and characterization of a series of high concentration Er3+ activated SrLaGa3O7 (abbreviated as Er:SLGO) crystal fibers is shown to have a great promise for implementation in mid-infrared laser applications. The current approach includes the design and formation of unique layered tetrahedral network structures with several kinds of rare earth (RE) ions including Er ions distributing statistically between layers, such as Er:SLGO, Er,Nd:SLGO,Er,Yb, Ho: SLGO,Er,Eu:SLGO and Er,Ho:SLGO. Five kinds of Er:SLGO crystal fibers were designed to grow via a micro-pulling down method. Spectroscopic analyses show that Er,Yb,Ho:SLGO and Nd,Er:SLGO crystal fibers were superiorly endowed with inhomogeneous broadening absorption and strong emission. The unique structural components design enables the generation of improved absorption and emission recombination, and the inhibition of self-termination as well. Generally, the use of structural components design may warrant high-efficiency emissions in RE-doped crystal fibers.
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