85 results about "Quartz ampoule" patented technology

The invention provides a preparation method of high-purity and low-loss chalcogenide glass, belonging to a preparation method of the chalcogenide glass. The preparation method comprises the following steps of: removing hydrocarbon impurity in the glass by taking ultra-dry gallium chloride as a purifying agent, and distilling and purifying the glass in combination with the conventional deoxidant, aluminum, magnesium or zirconium metal; placing glass mixture into a quartz ampoule to be sealed in by means of vacuum supply, founding the glass mixture in a vacuum ampoule, dynamically distilling the glass, and remelting the mixture after distilling; and effectively removing the hydrocarbon impurity in the glass by taking the ultra-dry gallium chloride as the purifying agent, so that the Mie scattering imperfection is hardly formed in the finally-obtained high-purity chalcogenide glass, and the low-loss homogeneous glass can be obtained. According to the high-purity chalcogenide glass synthesized by the preparation method provided by the invention, the minimum loss under the infrared transmission waveband is less than 0.3dB / m, and the corresponding loss of the absorption peak of the residual impurity is less than 8dB / m, so that the preparation method can be used in the field of an infrared glass optical element and an infrared optical fiber. The ultra-dry gallium chloride purifying agent can be easily obtained, and is lower in price; the carbon, hydrogen and oxygen impurities can be removed from the chalcogenide glass at high efficiency; the prepared chalcogenide glass is better in uniformity and less in light scattering.