Investigation of a 791-nm pulsed-pumped 2.7-μm Er-doped ZBLAN fibre laser

Spectroscopic properties and energy transfer process in Er3+ doped ZrF4-based fluoride glass for 2.7μm laser materials

“…By comparing results of fluorescence properties in various rare earth ions doped glasses, fluoride glasses possess significant advantages of high solubility for rare earth ions, long fluorescence lifetime of the excited electronic states as well as low nonlinear refractive index [16,[19][20][21][22]. Furthermore, the low maximum phonon energy make a great contribution to a reduction in the nonradiative loss [23].…”

Phase Transformation and Intense 2.7 μm Emission from Er3+ Doped YF3/YOF Submicron-crystals

“…In recent years, solid state lasers operating around 2.7 μm have attracted more and more attention due to their potential applications in various fields, such as remote sensing, atmosphere pollution monitoring, and military, etc12345. However, during the research process of mid-infrared lasers, there are many kinds of problems which restrict their development, such as the luminous efficiency of rare-earth ions, the stability of host materials, etc6.…”

Enhanced visible and mid-IR emissions in Er/Yb-codoped K0.5Na0.5NbO3 ferroelectric ceramics

“…Recently, lasers operating at middle-infrared (MIR) region have gained high research enthusiasm due to promising potential in various applications such as military countermeasures, medical surgery, remote sensing and atmosphere pollution monitoring [10,11]. To fabricate MIR solid state lasers, a simple and feasible way is to use suitable activators (e.g.…”