排序方式: 共有177条查询结果,搜索用时 93 毫秒
91.
Energy storage and heat deposition in Cr,Yb,Er co-doped phosphate glass were reported. A model based on rate equations was used to determine the energy storage from the free-oscillating output energy characteristics. The heat deposition was calculated by measuring the temperature rise of the glass rod. The results provided important information for the glass operating in Q-switched mode, and also for calculating the temperature profiles and cooling requirements of the glass under single shot and repetitive pulsed conditions. 相似文献
92.
In recent years, because of the use of wavelength divi- sion multiplexing (WDM) technology and the related increase in the complexity of optical networks, there has been a growing interest in integrated photonic de- vices. Er3+-doped glass waveguide devices are suitable for the manufacture of hybrid integrated optical circuit, allowing integration with other optoelectronic devices. Different technologies such as ion-exchange[1], radio fre- quency (RF) sputtering[2] have been proved valid for… 相似文献
93.
94.
研究了摩尔组分为70TeO22-(20-x)ZnO-xPbO-5La22O33-25K22O-25Na22O(x=0,5,10,15,20)的新型多元铅 锌镧碲酸盐激光玻璃,外掺Yb22O33为玻璃摩尔组分的1%.测试了 试样的物理性质及吸收光谱、荧光光谱和荧光寿命,计算了Yb3+3+的吸收截面、受激发射截面、荧光有效线宽等
关键词:
3+掺杂碲酸盐玻璃')" href="#">Yb3+3+掺杂碲酸盐玻璃
光谱性质
热稳定性 相似文献
95.
We present the characterization of amplified spontaneous emission (ASE) from newly fabricated Er^3 -doped tellurite fibres.When pumped at 98Ohm,a very broad erbium ASE in the range 1450-1650nm is observed.The changes of ASE with regard to fibre lengths and pumping power were measured.The output of 2mW from an Er^3 -doped tellurite fibre ASE source is obtained with the pump power of 540mW. 相似文献
96.
Erbium-doped TeO_2-based oxysulfide glasses have been prepared in argon atmosphere in graphite crucibles. The results of thermal analysis and spectroscopic properties of Er^{3+} have been studied in terms of sulfide influence. As a function of composition, we have measured principally the optical absorption, spontaneous emission, and lifetime of the materials. Judd-Ofelt theory was introduced to calculate bandwidth and emission cross-section of Er^{3+}. The results demonstrate that addition of sulfide in tellurite glasses results in broad emission spectra, with high emission cross-section, slightly low emission lifetime and a comparatively high thermal stability as pure oxide glasses. 相似文献
97.
研究了Er3+掺杂重金属氧氟硅酸盐玻璃的吸收光谱、上转换光谱和拉曼光谱,分析了重金属氧氟硅酸盐玻璃中Er3+的上转换发光机理. 结果表明:通过975nm的激光二极管激发,在室温下同时观察到蓝光(411nmj)、绿光(525和543nm)和红光(655nm),分别是由于Er3+离子2H9/2→4I15/2, 2H11/2→4I15/2, 4S3/2→4I15/2, 和4F9/2→4I15/2跃迁. 随Er2O3浓度的增加,蓝光、绿光和红光的发光强度都增强,上转换发光机理主要涉及能量转移和激发态吸收,强烈的绿
关键词:
Er3+离子
重金属氧氟硅酸盐玻璃
上转换光谱
发光机理 相似文献
98.
99.
Er3+和Yb3+共掺碲酸盐玻璃的光谱性质 总被引:13,自引:3,他引:10
研究了Er3+ 和Yb3+ 共掺碲酸盐玻璃的吸收和荧光光谱性质 ,分析了碲酸盐玻璃中Er3 + 的上转换发光机制 ,应用Judd Ofelt理论计算了玻璃的强度参量Ωt(t =2 ,4,6 ) ,分别为Ω2 =4.74× 10 - 2 0 cm2 ,Ω4=1.46× 10 - 2 0 cm2 ,Ω6 =0 .6 4× 10 - 2 0 cm2 ,计算了Er3+ 离子的自发跃迁几率、荧光分支比 ,应用McCumber理论计算了受激发射截面 ,并比较了Er3 + 在不同基质玻璃中的光谱特性。 相似文献
100.
熔制了掺铒碲铌玻璃样品(100-X)TeO2-XNb2O5(X=5,10,15,20 mol%),测试了其密度、折射率、转变温度、析晶温度、维氏机械强度、吸收光谱、荧光光谱、荧光寿命等参量.利用Judd-Ofelt和McCumber理论分别计算了铒离子强度参量Ωt (t=2, 4, 6)和受激发射截面σemi的大小,研究了掺铒碲铌玻璃样品光谱参量对Nb2O5成分的依赖性,并与典型的碲锌钠玻璃(75TeO2-20ZnO-5Na2O)在热学、机械强度、光谱性质和放大品行四个方面进行了比较. 相似文献