May 8 learned from the Ministry of Industry and Information, rare earth laser neodymium glass with stimulated emission cross section, high laser gain coefficient, nonlinear refractive index and other small, high-power laser device is the core material, mainly used in national defense, aerospace, Nuclear energy and other strategic areas, the United States and other developed countries have long imposed a technical blockade and a product embargo on me. With continuous support from Ministry of Industry and Information Technology, Ministry of Science and Technology, National Defense Science and Technology Bureau and other departments, the team of Hu Lili, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, has achieved batch production of large-size and high-performance rare earth laser neodymium glass preparation technology independently developed in 12 years Stable and stable production, platinum particle damage threshold, hydroxyl absorption coefficient, neodymium ion consistency and other indicators better than similar foreign products, our country became the second after the United States to master the technology of the country. In 2016, the "Key Technology and Application of Mass Production of Large-size and High-performance Laser Neodymium Glass" won the Grand Prize of Shanghai Technology Invention Award. Compared with foreign technology, the major breakthroughs and innovations of domestic preparation technology are: First, the integration of key processes to capture and integrate the control of impurities in the continuous smelting process of neodymium glass, dynamic hydroxyl removal, platinum removal, large size molding with low flow, no burst Tunnel kiln annealing and other five key technical difficulties; the second is the independent equipment, independent research and development of a new type of high-gain edge material, technology and complete sets of equipment, developed a multi-wavelength multi-path real-time marginal edge reflectivity comparison test, strong Laser scanning and a number of other off-line and on-line detection technology; Third, the main production process, the establishment of a complete quality assurance system and testing standards to achieve the laser neodymium glass components of the entire process of production. At present, Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences has built the first large-size high-performance laser neodymium glass production line with an annual output of 1,200 in China. The products are used in such countries as SG series and 5 Pa (1015W) Strategic needs and exports to France, Germany, Israel and other countries, estimated annual output value of 200 million yuan.
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