en.Wedoany.com Reported - Gongda Laser has recently achieved two breakthroughs in short-wavelength laser technology, realizing a 4000W ultra-high-power continuous-wave green laser output and a 227.1W high-beam-quality single-mode 355nm nanosecond ultraviolet laser output, setting new global power records in their respective fields.
Gongda Laser had previously achieved stable output of a 4000W continuous-wave green laser, setting a global record for the highest power of such lasers. Green lasers have an absorption rate approximately 8 to 10 times higher than near-infrared lasers on highly reflective materials such as copper, aluminum, and gold, making them suitable for applications in new energy battery welding, power electronics, and photovoltaic manufacturing. The 4000W-level continuous-wave green output enables efficient, low-heat-input deep penetration welding, potentially improving processing quality and production efficiency.
Building on this, Gongda Laser successfully achieved a 227.1W single-mode 355nm nanosecond pulsed ultraviolet laser output, with an optical-to-optical conversion efficiency of 25.2% and a beam quality maintained at near-diffraction-limited levels (M² < 1.2). Due to its short wavelength and high photon energy, the 355nm ultraviolet laser interacts with materials primarily through "photoablation," resulting in a minimal heat-affected zone, making it suitable for micro-nano manufacturing fields such as semiconductor wafer dicing, flexible circuit board drilling, high-density PCB depaneling, and chip packaging.
These two breakthroughs simultaneously address the technical challenges of "short wavelength" and "high power." Traditional 1-micron band near-infrared lasers offer high power and low cost, but their absorption rate by some key materials is low, leading to significant thermal effects during processing. Converting the wavelength to green or ultraviolet can improve material absorption and processing precision, but achieving stable output with high power and high beam quality has long been difficult. Gongda Laser's achievements demonstrate that the company has mastered core technologies ranging from nonlinear frequency conversion crystals and thermal management to resonator design, resolving the trade-off between efficiency, stability, and beam quality in high-power short-wavelength lasers. The near-fundamental-mode beam quality of the 227W single-mode ultraviolet laser allows energy to be focused to a spot diameter of a few micrometers.
The 4000W continuous-wave green laser can be used for welding core components such as power battery tabs, busbars, and explosion-proof valves, achieving spatter-free, high-penetration processing results. The 227W high-power ultraviolet laser can be applied in fields such as wafer dicing, low-dielectric-constant material cutting, and HDI board blind hole drilling. In selective laser melting of polymer materials, refractory metals, and their mixed powders, high-power short-wavelength lasers enable smaller melt pools, higher precision, and better surface quality, suitable for precision component printing in medical and aerospace applications.
Previously, core technologies and high-end markets for high-power short-wavelength lasers were primarily dominated by foreign companies. Gongda Laser's achievement of two global power records reflects the independent research and development capabilities of Chinese enterprises in related fields. As high-power green and ultraviolet lasers gradually achieve industrial-grade applications and large-scale supply, domestic high-end manufacturing's reliance on imported equipment is expected to decrease.
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