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A novel erbium ion doped zinc fluoride glass was prepared. 2.7μm emission and transmittance properties together with thermal ability were investigated. An enhanced 2.7μm emission was observed by introducing ZnF2 in the ZrF4-based fluoride glass. Meanwhile, the J-O parameters and branching ratios (β) of Er3+-doped zinc fluoride glass were calculated and analyzed. The present Er3+-doped zinc fluoride...
Topological insulators are a new class of quantum matter which have a bulk band gap like ordinary insulators but a protected conducting state on their edge or surface. These unique properties render topological insulators ultra-broadband optical response and potential applications in the photonic devices. Herein, we experimentally demonstrate that topological insulator Bi2Te3 can be used as an optical...
A new type of germanate-tellurite glass with Tm3+ ions doped was synthesized and its 1.8µm emission properties have been studied for its application as laser materials. The Judd-Ofelt intensity parameters, emission cross section, and absorption cross section of Tm3+ ions were calculated and analyzed. Germanate-tellurite glass with 1.0 mol% Tm2O3 possesses the highest spontaneous transition probability...
A novel erbium ion doped fluoro-tellurite glasses were prepared, and 2.7μm emission properties, thermal stability and chemical durability were investigated. An intense 2.7μm emission was observed. It was also found that the thermal stability and chemical durability were greatly improved by introducing a small amount of TeO 2 into fluoride glasses. In addition, the spontaneous transition probability...
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