Will 355nm Ultraviolet lasers continue to explode in the 5G era?

Ultraviolet lasers are lasers with a wavelength of 355 nm. Due to its short wavelength and narrow pulse characteristics, it can produce a very small focused spot and keep the heat-affected zone to a minimum. It can not only provide extremely fine processing effect, but also maintain good positioning accuracy, which is the advantage of UV laser.

At present, in view of the continuous improvement of laser processing efficiency and requirements for industrial applications, nanosecond ultraviolet lasers with a power of more than 10W have become the new favorite in the market. Therefore, high-power, narrow pulse width, high repetition frequency medium and high power nanosecond ultraviolet lasers are developed by various companies. mainstream direction.

Ultraviolet lasers work by directly breaking the chemical bonds that connect the atomic components of a substance. This process of separating substances into atoms is a "cold" process that does not generate heat to the periphery. On the other hand, most materials absorb UV light efficiently, allowing them to be used to process materials that cannot be processed by infrared and visible lasers. High-power UV lasers are mainly used in the high-end market of fine processing, including flexible circuit board (FPCB), printed circuit board (PCB) drilling/cutting, ceramic material drilling and dicing, glass/sapphire cutting, LED substrate crystal Circular scribing, special glass cutting, laser precision marking and other fields.

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Since 2016, the domestic UV laser market has grown rapidly. Although the development slowed down last year, the total domestic sales volume is still close to 9,000 units, a year-on-year increase of more than 15%. Foreign companies such as TRUMPF, Coherent, Spectrophysics and Fortis still occupy the main high-end market. In terms of domestic brands, there are mainly Wuhan Huari, Suzhou Beilin, Yinggu, Shenzhen Ruifengheng, Yingnuo, Gelai, Beijing Zhuolai Laser, Daozhongdao, Changchun New Industry and other enterprises, they occupy 90% of domestic ultraviolet lasers. % share.

5G communication brings opportunities for laser applications

All major countries in the world are seeking the most advanced technology as a new economic growth point. China has formed its own competitiveness in the independent development of science and technology, and can compete with Europe, the United States and Japan on the same stage, especially led by Huawei. 5G technology is regarded as a thorn in the eyes of the United States, and Huawei has recently been involved in the whirlpool of the Sino-US trade war. 2019 is the first year of 5G pre-commercialization in China, and it is obvious that 5G has become a hot industry today. The folding screens launched by many manufacturers in February have attracted wide attention, but they are still not widely used. Our country and various industries are also looking forward to 5G to bring a new generation of communication experience and bring new vitality to the consumer electronics industry, especially the huge demand for product replacement on the mobile phone side. Under its construction, the digital economy covering online and offline, consumption and production, platform and ecology will gain greater driving force.

At present, China has more than 1 billion mobile phone users, and has already entered the era of smart phones. Recalling that the fastest development stage of smart phones in China should be from 2010 to 2015, many people forget the rapid development during this period. There is a rapid transition of communication signals from 2G to 3G, as well as the contribution of 4G. During this period, represented by smartphones, products such as PC tablets and mobile wearables brought real heavy demand for laser precision processing. A group of laser precision equipment companies received good orders. demand has increased.

Ultrashort pulse ultraviolet laser or trend

Lasers can be divided into infrared light, green light, ultraviolet light and blue light according to the spectrum. According to the pulse time, it can be divided into microseconds, nanoseconds, picoseconds and femtoseconds. Ultraviolet light is obtained by doubling the frequency of infrared light, which is much more expensive and difficult. At present, various domestic manufacturers have basically mature technologies in nanosecond UV lasers, and they have completely localized products in the range of 2-20 watts, and many performances such as power stability control are also relatively reliable. In the past two years, due to the market competition of ultraviolet lasers, the price has dropped, which makes more people realize the advantages of ultraviolet laser processing. Like infrared lasers, ultraviolet lasers are used as heat sources for precision machining. There are two aspects of future development: one is higher power, and the other is the development of ultra-short pulses.

It is still difficult to increase the power of ultraviolet lasers, and foreign companies are still leading in this regard. At present, Spectra Physics has already launched a 60-watt ultraviolet laser, and it is said that TRUMPF has the ability to provide products with hundreds of watts. The highest power that can be done in China is that Huari Laser can provide 40 watts of products. At the application level, many 1-5 watts were used for marking in the past, such as plastics, glass, resin, ceramics and other materials, especially in the processing of electronic components; 10 watts were used for some precision cutting in the early days, and later began to be used. After using a laser of more than 20 watts, I believe that the ultraviolet laser cutting of more than 40 watts will not be unfamiliar in the future.

Es una tendencia para el desarrollo de láseres ultravioleta desarrollarse al nivel de picosegundos y femtosegundos. En la actualidad, empresas nacionales como Beilin Laser, Huari Laser y Yinggu Laser tienen láseres ultravioleta de picosegundos, mientras que Wuhan Anyang Laser ha lanzado uno de 30 vatios o más. Raycus, el láser de fibra ultravioleta de femtosegundos, también ha lanzado un láser de picosegundos ultravioleta de 20 vatios mediante la adquisición de Guoshen Optoelectronics. La máquina de corte por láser UV de nanosegundos tiene una ligera carbonización en el borde superior del corte de productos FPC y CLV, y la máquina de corte por láser ultrarrápida de picosegundos puede resolver eficazmente el problema del efecto de procesamiento y evitar la carbonización. En la actualidad, además de Han's Laser, Shengxiong Laser, como empresa líder en equipos de procesamiento láser de precisión, ya ha lanzado máquinas de corte por láser UV, incluidas Haimuxing, Delong y otras empresas también tienen modelos similares. En el Shenzhen Laser Show en mayo, Celestica exhibió la última máquina de corte por láser UV de picosegundos. El equipo láser UV de ultra precisión es una dirección para el futuro micromaquinado láser.

El desarrollo del láser ultravioleta plantea nuevos requisitos para el sistema de refrigeración por agua

En la producción y aplicación reales, los requisitos para la estabilidad de la potencia del láser UV y la estabilidad del pulso son relativamente altos, por lo que debe estar equipado con un sistema de enfriamiento de agua a temperatura constante muy estable y confiable. Hoy en día, la mayoría de los láseres UV de más de 3 vatios utilizan un sistema de refrigeración por agua. Para garantizar que la temperatura del láser se controle bien y con precisión, estrictamente hablando, el láser debe estar equipado con un sistema de refrigeración por agua. En la actualidad, los láseres ultravioleta de nanosegundos siguen siendo los láseres más grandes del mercado, y la demanda anual de enfriadores láser es cercana a las 10 000 unidades.

Como proveedor de servicios de soluciones integrales centrado en I+D, producción y ventas de enfriadores industriales en China, Teyu Electromecánica también está acelerando su propio ritmo de crecimiento. Los enfriadores electromecánicos Teyu se utilizan ampliamente en diversas industrias médicas, de procesamiento láser y de fabricación industrial, y se exportan principalmente a Europa, América, Asia oriental y el sudeste asiático. Sus productos de la serie de enfriadores están diversificados y cubren una amplia gama de campos. Con muchas ventajas como precisión y eficiencia, conveniencia e inteligencia, refrigeración estable y soporte para comunicación por computadora, ha establecido una excelente imagen de marca en la industria.