摘要:
The present disclosure relates to compositions that can be used for optical fibers and other systems that transmit light in the near-, mid- and/or far-ranges of the infrared spectrum, such as for example in the wavelength range of 1.5 μm to 14 μm. The optical fibers may comprise a light-transmitting chalcogenide core composition and a cladding composition. In some embodiments, the light-transmitting chalcogenide core composition has a refractive index n(core) and a coefficient of thermal expansion CTE(core), and the cladding composition has a refractive index n(cladding) and a coefficient of thermal expansion CTE(cladding), wherein n(cladding) is less than n(core) and in some embodiments wherein CTE(cladding) is less than CTE(core). In some embodiments, the chalcogenide glass core composition comprises a) sulfur and/or selenium, b) germanium, and c) gallium, indium, tin and/or one or more metal halides.
摘要:
Disclosed herein are seals for liquid-tight bonding of an optical window comprising a Bi—In alloy. Also disclosed are optical cells comprising the Bi—In alloy seals to provide a liquid-tight seal between a cell housing and a drilled optical window.
摘要:
A method for producing sulfide glass wherein phosphorus sulfide satisfying the following formula (1) is used as a raw material: 100×A/B≧37 (1) wherein in the formula, A is peak areas of peaks that appear at peak positions in a range of 57.2 ppm or more and 58.3 ppm or less, and 63.0 ppm or more and 64.5 ppm or less in 31PNMR spectroscopy, and B is the total of peak areas of all peaks measured in 31PNMR spectroscopy.
摘要:
The invention is directed to Pd-based metallic glass alloys useful in biomedical applications having no Ni or Cu. Exemplary metallic glass alloys are represented by AaBb{(Si)100-c(D)c}d, where A may be selected from Pd, and combinations of Pd and Pt, B may be selected from Ag, Au, Co, Fe, and combinations thereof, and D may be selected from P, Ge, B, S. Also, a, b, c and d are atomic percentages, and a ranges from about 60 to about 90, b ranges from about 2 to about 18, d ranges from about 5 to about 25, and c is greater than 0 and less than 100.
摘要:
A method is provided for molding from glass certain complex optical components, such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. Thereby, mold masters or patterns, which define the profile of the optical components, made on metal alloys, particularly titanium or nickel alloys, or refractory compositions, with or without a non-reactive coating are used. Given that molding optical components from oxide glasses has numerous drawbacks, it has been discovered in accordance with the invention that non-oxide glasses substantially eliminates these drawbacks. The non-oxide glasses, such as chalcogenide, chalcohalide, and halide glasses, may be used in the mold either in bulk, planar, or power forms. In the mold, the glass is heated to about 10–110° C., preferably about 50° C., above its transition temperature (Tg), at which temperature the glass has a viscosity that permits it to flow and conform exactly to the pattern of the mold.
摘要:
Said medium is a halide glass (2, 8, 12, 20) containing uranium ions at least partly in the form U.sup.3+ and having, at least at one point of a region of the near infrared between 2.2 and 3.4 micrometers, an optical attenuation not exceeding 0.01 cm.sup.-1. For the production thereof, preparation takes place of a halide glass containing uranium ions, at least partly in the form U.sup.4+ and/or U.sup.5+, and having at least at this point the aforementioned attenuation. The glass is exposed to ionizing radiation able to produce trivalent uranium ions from the uranium ions of the prepared glass. Application to the production of optical guides, whereof the guiding parts are formed from such a medium.
摘要:
A novel glass exhibits fluorescence from trivalent neodymium ions at a wavelength of approximately 1.06 micrometers. The glass consists essentially of about 98 weight percent of a host glass and about 2 weight percent Nd2(SO4)3. The host glass being either 90 mol percent ZnCl2 and 10 mol percent Na2SO4 or 60 mol percent ZnSO4 and 40 mol percent Rb2SO4.
摘要翻译:一种新型玻璃在大约1.06微米的波长处表现出来自三价钕离子的荧光。 玻璃基本上由约98重量%的主体玻璃和约2重量%的Nd 2(SO 4)3组成。 主体玻璃为90mol%ZnCl 2和10mol%Na 2 SO 4或60mol%ZnSO 4和40mol%Rb 2 SO 4。
摘要:
Embodiments of the present disclosure describe chalcogenide glass compositions and chalcogenide switch devices (CSD.) The compositions generally may include 3% to 15%, silicon, 8% to 16% germanium in, greater than 45% selenium, and 20% to 35% arsenic, by weight. The amount of silicon and germanium in a composition generally may include more than 10% by weight. CSDs may include various compositions of chalcogenide glass, and a plurality of them may be used in a memory device, such as die with a memory component, and may be used in various electronic components and systems. Other embodiments may be described and/or claimed.
摘要:
The invention relates to chalcogenide glass compositions for use in a lens system to balance thermal effects and chromatic effects and thereby provide an achromatic and athermal optical element that efficiently maintains achromatic performance across a broad temperature range. The glass composition is based on sulfur compounded with germanium, arsenic and/or gallium, and may further comprise halides of, for example, silver, zinc, or alkali metals. Alternatively, is based on selenium compounded with gallium, and preferably germanium, and contains chlorides and/or bromides of, for example, zinc, lead or alkali metals.
摘要:
The present invention is generally directed to a method of making chalcogenide glasses including holding the melt in a vertical furnace to promote homogenization and mixing; slow cooling the melt at less than 10° C. per minute; and sequentially quenching the melt from the top down in a controlled manner. Additionally, the present invention provides for the materials produced by such method. The present invention is also directed to a process for removing oxygen and hydrogen impurities from chalcogenide glass components using dynamic distillation.