| 摘要 |
<p>A telluride glass with glass transition temperature above 150 °C, difference between the crystallization temperature and the glass transition temperature of above 200 °C, and extended transmission in the infrared region of radiation of up to 20 microns having, on mol basis, 20-60 % tellurium, 10-50 % arsenic, 4-35 % germanium, 0.5-15 % gallium, up to 15 % iodine, and up to 30 % selenium. All or part of the gallium can be replaced with indium and the glass can contain up to 5 %, based on the weight of the glass components, of a rare earth ion to render the glass fluorescent. Optical fibers drawn from these glasses have shown mid infrared fluorescence and may have as a bright source of IR light.</p> |
