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Enhancement of spectroscopic parameters of Er3+-doped cadmium lithium gadolinium silicate glasses as an active medium for lasers and optical amplifiers in the NIR-region
Solid State Sciences ( IF 3.4 ) Pub Date : 2021-01-13 , DOI: 10.1016/j.solidstatesciences.2021.106539
A.A. El-Maaref , E.A. Abdel Wahab , Kh.S. Shaaban , R.M. El-Agmy

Optical properties and radiative rates of cadmium lithium gadolinium silicate glasses (CLGS) doped with Er3+ are presented. Direct energy gap and its dependence refractive indexes are estimated and presented, as well. We have derived absorption and emission cross-sections and then the estimated possible spectral optical gain for different concentrations of Er3+ at 1 mol%, 1.5 mol%, and 2 mol% are also evaluated. For the three NIR peaks at 800 nm, 1 μm and 1.5 μm, the effect of dopant concentrations on the emission cross section and optical gain factors are investigated. The quenching behaviour occurred in the emission/absorption cross sections as well as optical gain for higher dopant level and at a wavelength of 1 μm is discussed. The present glasses doped with 1.5 mol% and 2 mol% of Er2O3 show higher emission cross sections values at 1.5 μm, the estimated emission cross sections rapidly increased by about of 40% at 1.5 μm of the glass samples doped with 1.5 mol%, and 2 mol% of Er2O3. This increase reflected on the gain factors which show higher values of the same samples at 1.5 μm by ~79 cm1



中文翻译:

增强掺Er 3+的镉硅酸锂锂ado玻璃作为近红外区域激光和光放大器的活性介质的光谱参数

介绍了掺有Er 3+的镉硅酸锂lithium锂玻璃的光学性质和辐射速率。还估计并给出了直接能隙及其相关的折射率。我们得出了吸收和发射截面,然后估算了不同浓度的Er 3+的可能的光谱光学增益还评估了1mol%,1.5mol%和2mol%的α,β,α,β,β,β,β,β,β,β,β。对于在800 nm,1μm和1.5μm处的三个NIR峰,研究了掺杂剂浓度对发射截面和光学增益因子的影响。讨论了在发射/吸收截面中发生的猝灭行为以及更高掺杂水平和波长为1μm时的光学增益。掺杂有1.5 mol%和2 mol%的Er 2 O 3的本玻璃在1.5μm处显示出更高的发射截面值,在1.5μm掺杂有1.5 mol的玻璃样品中,估计的发射截面迅速增加了约40%。 %和2mol%的Er 2 O 3。这种增加反映在增益因子上,该因子在1.5μm处显示出相同样品的更高值。7-9 厘米-1个

更新日期:2021-01-22
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