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This year marks the tenth anniversary of the construction of Shanghai International Science and Technology Innovation Center, which is accelerating its move from "building a framework" to "strong functions".Shanghai will strive to be the first to lay out strategic emerging industries and future industries, and accelerate the cultivation and development of new productive forces.Discovering more "flowers of science and technology innovation" and producing more "fruits of industry" is the original intention of launching "Technology Innovation Decoded", an interview with entrepreneurs.In the second season jointly planned by Archimedes Media and Baoshan Media Center, focusing on the goal of Baoshan to build the main position of Shanghai Science and Technology Innovation Center, we went into the streets, towns and parks in the district, and talked with the growing leaders of science and technology innovation. From the perspective of the media, we visited application scenarios, analyzed innovation cases, discovered the value of the industry, decoded its growth path, and helped build a "tropical rainforest" for science and technology innovation.The 4th issue is launched todayTechnology Innovation Decoding | Dialogue with Dong Yongjun: Developing 鈥渦nique skills鈥?in independent research and development and manufacturing of crystal materialsClick to watch the videoThe laser industry has entered the fast lane in recent years, with a market size of nearly 10 billion.Data shows that China accounts for 60-70% of the global laser market.Whether it is laser beauty, military missiles, autonomous driving and other fields, crystal materials are an indispensable key component.Small crystals are actually what we often call artificial gemstones. This seems commonplace, but to be applied to industry, its technical threshold is far higher than we imagined.At Xinfeirui Company in Baoshan, Shanghai, Dr. Dong Yongjun led the core team to successfully break through the core technology of crystal material integration and developed an independent manufacturing process for crystal materials.How difficult is it to grow tiny crystals?Dr. Dong once worked at the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences. Later, he saw my country鈥檚 shortcomings in crystal materials, turned to starting a business, settled in Baoshan, and devoted himself to researching laser crystal material technology.In the crystal growth workshop, Dr. Dong introduced that the crystal growth process is similar to the growth of crops.First, a seed is needed, and then different ions are doped according to needs to allow it to grow.It takes about ten days to grow a crystal of more than ten centimeters.This process involves many technical difficulties such as seed materials and temperature monitoring, and requires gradual innovation.The cultivated crystal material is then cut, polished, and coated, and turned into a very small piece to suit the laser equipment.Now, Dr. Dong and his team have mastered the growth technologies of various laser crystal materials, such as the pull-up method, the descent method and the co-solvent method.The cultivated crystal material is then polished, coated, and cut into a very small piece to suit the laser equipment.A single laser crystal costs more than 1,000 yuan per gram, which can be said to be more precious than gold.But its "preciousness" doesn't stop there.The development of new materials is a strong thrust and support for high-quality development.Artificial crystals are cultivated in an artificial environment and are more perfect and stable than natural gemstones.Therefore, many high-tech fields are inseparable from crystalline materials, such as the well-known single crystal silicon in the solar field and gallium nitride in the semiconductor field.Eye-safe laser integrated crystals and devicesThe eye-safe laser integrated crystals and devices developed by Dr. Dong鈥檚 team are used in the fields of laser ranging and lidar.Compared with previous lidar light sources, the size, weight and price of eye-safe laser integrated crystals and devices have been significantly reduced.Although this laser equipment is very small, it is stable, reliable, has good heat dissipation performance, is safer, and has a variety of laser crystal functions.Currently, similar miniaturized lasers have received intended orders from leading companies such as Huawei and IPG.From the overall international level, China is not lagging behind.However, Dong Yongjun admitted that the high-end market for lasers and laser equipment is still dominated by foreign countries.Compared with some companies in the United States and Europe that have been in this industry for decades or even hundreds of years, we still have a gap.But Dong Yongjun is confident that he can catch up with them one day.He said that the traction of the huge domestic market is definitely the biggest benefit to his own development.Today, Dong Yongjun has broken through the industrial bottlenecks of solid lasers such as difficulty in heat dissipation and low reliability.In the future, he and his team will expand production scale, build a full R&D process chain, create leading advantages, and meet market demand.Future "We are in this business for a lifetime. The laser industry is still in the early stages of development. In the long term, we want to become a world-renowned supplier of laser crystal materials." Under the lens of "Science and Technology Decoded", Dong Yongjun is modest and restrained, but very determined.We look forward to him sprinting forward in the high-end track of the laser industry, accelerating the cultivation of new productivity in the field of new materials, and winning new development advantages for our country.Previous recommendations