In the field of high-end precision manufacturing, highly reflective metals such as copper, gold, and silver are widely used due to their excellent thermal and electrical conductivity. However, for a long time, these materials have been considered "notoriously difficult" in laser processing. When processing pure copper with traditional infrared lasers (wavelength 1064nm), the material's absorption rate is less than 5%. This means over 95% of the laser energy is directly reflected. This extremely low absorption rate not only leads to highly unstable molten pools and low-density printed parts but, more critically, the intense reflected light can easily back-burn and damage expensive internal optical components of the laser, severely restricting the efficient processing and 3D printing applications of highly reflective metals.
In September 2026, Shenzhen Gongda Laser announced the completion of its C+ round of strategic financing, led by Shenzhen Capital Group. Its core breakthrough lies in the successful mass production of a 4000W near-single-mode continuous green laser (wavelength 532nm). The reason green lasers can break this bottleneck lies in their physical wavelength advantage: copper's absorption rate for green light is over 40%, approximately 8 times that of infrared lasers. This extremely high energy absorption rate means laser energy can be input into the molten pool efficiently and stably, fundamentally solving the stability issues of high spatter and poor formation in the additive manufacturing of highly reflective metals.
In practical industrial applications, metal 3D printing equipment equipped with Gongda Laser's self-developed green lasers has demonstrated excellent performance. The printed pure copper parts achieve a stable density of over 99.5%, with electrical conductivity reaching 100% IACS (International Annealed Copper Standard), perfectly preserving the original superior physical properties of pure copper. Currently, this technology is widely used in lithium batteries, semiconductor manufacturing, and high-end equipment. Especially with the explosive growth of AI computing infrastructure, servers and AI chips have extremely stringent requirements for thermal management. The demand for mass manufacturing of complex, irregular copper structural components-such as high-thermal-conductivity micro-channel liquid cooling structures and copper-based thermal management parts-has surged. With its high precision and spatter-free characteristics, the green laser is rapidly becoming the core equipment for manufacturing AI liquid cooling plates.
Furthermore, Gongda Laser's layout in short-wavelength laser technology platforms does not stop there. In the ultraviolet field, the company has also launched a 227W single-mode UV fiber laser, marking its comprehensive evolution from a single wavelength to a high-power short-wavelength laser technology platform. With the full localization of core technologies and the maturation of the industrial chain, the manufacturing costs of high-power short-wavelength lasers are gradually decreasing. In the future, these lasers are expected to replace traditional light sources in more precision manufacturing scenarios, providing stronger technical support for the upgrading of global manufacturing.
