Intense 2.7m emission in Er3+ doped zinc fluoride glass.
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abstract
A novel erbium ion doped zinc fluoride glass was prepared. 2.7m emission and transmittance properties together with thermal ability were investigated. An enhanced 2.7m emission was observed by introducing ZnF2 in the ZrF4-based fluoride glass. Meanwhile, the J-O parameters and branching ratios () of Er3+-doped zinc fluoride glass were calculated and analyzed. The present Er3+-doped zinc fluoride glass with large emission cross-section (0.9210-20cm2) and long decay lifetime (2.05ms) at 2.7m indicates that it have very promising applications for solid state lasers around 3m.