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Spectroscopic properties in Er3+-doped germanotellurite glasses and glass ceramics for mid-infrared laser materials

機譯：摻Er3 +的鍺酸鹽玻璃和中紅外激光材料的玻璃陶瓷的光譜性質

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摘要

Transparent Er3+-doped germanotellurite glass ceramics (GCs) with variable Te/Ge ratio were prepared by controllable heat-treated process. X-ray diffraction (XRD) and transmission electron microscope (TEM) confirmed the formation of nanocrystals in glass matrix. Raman spectra were used to investigate the evolution of glass structure and photon energy. Fourier transform infrared (FTIR) spectra were introduced to characterize the change of hydroxyl group (OH−) content. Enhanced 2.7 μm emission was achieved from Er3+-doped GCs upon excitation with a 980 nm laser diode (LD), and the influence of GeO2 concentration and heat-treated temperature on the spectroscopic properties were also discussed in detail. It is found that the present Er3+-doped GC possesses large stimulated emission cross section at around 2.7 μm (0.85 × 10−20 cm2). The advantageous spectroscopic characteristics suggest that the obtained GC may be a promising material for mid-infrared fiber lasers.
機譯：采用可控的熱處理工藝，制備了Te / Ge比可變的摻Er 3 + 摻雜透明鍺鍺石微晶玻璃。 X射線衍射（XRD）和透射電子顯微鏡（TEM）證實了玻璃基質中納米晶體的形成。拉曼光譜用于研究玻璃結構和光子能量的演變。引入傅立葉變換紅外光譜（FTIR）來表征羥基含量（OH -）的變化。用980 nm激光二極管（LD）激發(fā)，摻Er 3 + 的氣相色譜儀可增強2.7μm的發(fā)射，還討論了GeO2濃度和熱處理溫度對光譜性質的影響。詳細。發(fā)現(xiàn)目前的摻Er 3 + 氣相色譜在2.7largeμm左右具有較大的激發(fā)發(fā)射截面（0.85×10 ?20 cm 2 ）。有利的光譜特性表明，所獲得的GC可能是用于中紅外光纖激光器的有前途的材料。

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