Abstract:
The disclosure relates to highly temperable colored glass compositions. The colored glass compositions have high coefficients of thermal expansion and high Young's moduli that advantageously absorb in the ultraviolet and/or blue wavelength ranges. Methods of making such glasses are also provided.
Abstract:
A wavelength-selective transmissive glass article has light transmittance Tmore than 315 nm and 400 nm or less at a wavelength of more than 315 nm and 400 nm or less of 1% or more. In addition, the wavelength-selective transmissive glass article has light transmittance T315 nm or less at a wavelength of 315 nm or less of 60% or less.
Abstract:
A preparation method of rare earth ions doped alkaline earth metal silicate luminescent glass is provided. The steps involve: step 1, mixing the source compounds of cerium, terbium and alkaline earth metals and putting the mixture into solvent to get a mixed solution; step 2, impregnating the nanometer pores glass with the mixed solution obtained in step 1; step 3: calcining the impregnated nanometer pores glass obtained in step 2 in a reducing atmosphere, cooling to room temperature, then obtaining the cerium and terbium co-doped alkaline earth metal silicate luminescent glass. Besides, the rare earth ions doped alkaline earth metal silicate luminescent glass prepared with aforesaid method is also provided. In the prepared luminescent glass, cerium ions can transmit absorbed energy to terbium ions under the excitation of UV light due to the co-doping of cerium ions. As a result, the said luminescent glass has higher luminous intensity than the glass only doped with terbium.
Abstract:
Photodarkening resistant optical fiber lasing media and fiber lasers incorporating the same are disclosed. In one embodiment, an optical fiber lasing medium includes a core portion formed from silica-based glass comprising a rare-earth dopant and deuterium, the core portion having an index of refraction nc, a numerical aperture NAc. A concentration of defect color centers in the core portion is less than 1×1016/cm3. Deuterium is combined with the defect color centers to form reacted defect color centers that do not absorb ultraviolet and visible wavelengths of light. A first cladding portion is formed from silica-based glass, the first cladding portion surrounding and directly contacting the core portion and having an index of refraction n1, wherein the index of refraction n1 of the first cladding portion is less than the index of refraction nc of the core portion. Methods of forming the photodarkening resistant optical fiber lasing media are also disclosed.
Abstract:
A high silica glass composition comprising about 82 to about 99.9999 wt. % SiO2 and from about 0.0001 to about 18 wt. % of at least one dopant selected from Al2O3, CeO2, TiO2, La2O3, Y2O3, Nd2O3, other rare earth oxides, and mixtures of two or more thereof. The glass composition has a working point temperature ranging from 600 to 2,000° C. These compositions exhibit stability similar to pure fused quartz, but have a moderate working temperature to enable cost effective fabrication of pharmaceutical packages. The glass is particularly useful as a packaging material for pharmaceutical applications, such as, for example pre-filled syringes, ampoules and vials.
Abstract translation:一种高二氧化硅玻璃组合物,包含约82-约99.9999wt。 %SiO 2和约0.0001至约18wt。 选自Al 2 O 3,CeO 2,TiO 2,La 2 O 3,Y 2 O 3,Nd 2 O 3,其它稀土氧化物中的至少一种掺杂剂的%,以及其两种或更多种的混合物。 玻璃组合物的工作点温度范围为600至2000℃。这些组合物表现出与纯熔融石英相似的稳定性,但具有适度的工作温度以使药物包装成本有效地制造。 该玻璃特别可用作药物应用的包装材料,例如预填充注射器,安瓿和小瓶。
Abstract:
Photodarkening resistant optical fiber lasing media and fiber lasers incorporating the same are disclosed. In one embodiment, an optical fiber lasing medium includes a core portion formed from silica-based glass comprising a rare-earth dopant and deuterium, the core portion having an index of refraction nc, a numerical aperture NAc. A concentration of defect color centers in the core portion is less than 1×1016/cm3. Deuterium is combined with the defect color centers to form reacted defect color centers that do not absorb ultraviolet and visible wavelengths of light. A first cladding portion is formed from silica-based glass, the first cladding portion surrounding and directly contacting the core portion and having an index of refraction n1, wherein the index of refraction n1 of the first cladding portion is less than the index of refraction ncof the core portion. Methods of forming the photodarkening resistant optical fiber lasing media are also disclosed.
Abstract:
A mixed quartz powder contains quartz powder and two or more types of doping element in an amount of from 0.1 to 20 mass %. The aforementioned doped elements include a first dope element selected from the group consisting of N, C and F, and a second dope element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, the lanthanides and the actinides. The “quartz powder” is a powder of crystalline quartz or it is a powder of glassy SiO2 particles. It is made form natural occurring quartz or it is fabricated synthetically. The “quartz powder” may be doped. The compounding ratio of the total amount (M1) of the aforementioned first elements and the total amount (M2) of the aforementioned second elements as the ratio of the number of atoms (M1)/(M2) is preferably from 0.1 to 20. Al as well as the aforementioned doped elements is preferably included in a mixed quartz powder of this invention.
Abstract:
An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.
Abstract:
A method of fabricating doped quartz component is provided herein. In one embodiment, the doped quartz component is a yttrium doped quartz ring configured to support a substrate. In another embodiment, the doped quartz component is a yttrium and aluminum doped cover ring. In yet another embodiment, the doped quartz component is a yttrium, aluminum and nitrogen containing cover ring.
Abstract:
A new class of nanostructured RE-doped SiO2-base materials that display superior fluorescence properties is provided. In particular, high gain combined with a broad and flat spectral band width is observed in material composed of a high fraction of a nano-dispersed metastable silicate phase in a glassy SiO2 matrix, produced by partial devitrification (crystallization) of several glassy Al2O3/Er2O3- and Y2O3/Er2O3-doped SiO2 compositions. Also, a highly deconvoluted spectral emission, with several prominent peaks, is observed in completely devitrified material, consisting of a uniform nano-dispersion of an equilibrium silicate phase in a crystobalite SiO2 matrix. Such enhanced fluorescence properties were observed in heat treated nanopowders prepared by vapor-phase, solgel, rapid solidification, and spray-pyrolysis methods.
Abstract translation:提供了一类新型的具有优异荧光性能的纳米结构的RE掺杂SiO 2基体材料。 特别地,在通过部分失透反应产生的玻璃状SiO 2基体中的高分数纳米分散的亚稳态硅酸盐相组成的材料中观察到具有宽的和平坦的光谱带宽的高增益( 几个玻璃状的Al 2 O 3 / O 2 O 3 - 和Y 2的结晶, O 3组成的二氧化硅组合物。 此外,在完全失透的材料中观察到具有几个突出的峰的高度去卷积的光谱发射,由平底硅酸盐相在均匀的SiO 2基体中的均匀的纳米分散体组成。 在通过气相,溶胶凝胶,快速凝固和喷雾热解方法制备的热处理纳米粉末中观察到这种增强的荧光性质。