IPG Green Single-Mode Laser Advances Metal 3D Printing, Enabling Efficient Processing of Reflective

IPG Photonics has officially introduced its next-generation green single-mode fiber laser technology, specifically engineered for processing highly reflective metals such as copper and its alloys, as well as for advanced metal 3D printing applications. By significantly improving material absorption efficiency and process stability, this technology delivers a high-quality, high-efficiency solution that enables greater precision and broader adoption of metal additive manufacturing.

Green Laser Technology Overcomes Absorption Limitations

The absorption rate of laser energy is a critical factor in determining processing quality. According to IPG test data, pure copper exhibits an absorption rate of approximately 40% with green wavelengths, compared to only about 5% with conventional red lasers—an improvement of up to eight times.

This substantial increase leads to significantly higher energy utilization while reducing spatter and minimizing the heat-affected zone (HAZ), resulting in improved processing stability and superior surface quality.

Single-Mode Beam Quality Enables Precision and Stability

IPG’s green fiber lasers feature outstanding single-mode beam quality, with M² ≤ 1.1 (measured at approximately 1.05), enabling smaller focused spot sizes and higher energy density for precision manufacturing.

At a 500 W output level, the system maintains peak-to-peak power stability within ±2%, along with excellent P–I linearity. Additionally, ultra-fast switching times of less than 1 microsecond ensure high processing speed, consistency, and reduced thermal accumulation during operation.

Proven High-Quality Copper 3D Printing

In practical validation tests, high-density pure copper parts were successfully produced using IPG’s green laser technology. The printed parts achieved densities exceeding 99%.

After annealing, the electrical conductivity reached 94.4% IACS, and the thermal conductivity reached up to 368 W/(m·K), demonstrating performance levels approaching those of conventionally manufactured copper components. These results confirm the strong potential of green laser technology for functional part production.

Broad Applications and Industrial Value

IPG offers a comprehensive portfolio of green laser solutions ranging from 100 W to 2000 W, designed for easy system integration with compact form factors.

This technology is well-suited for applications requiring high electrical and thermal conductivity, including:

• Power electronics components
• Induction coils
• Lead frames and precision structures

It also enables advanced manufacturing capabilities across aerospace, automotive, and medical industries.

Conclusion

IPG’s green single-mode fiber laser represents a comprehensive breakthrough in processing highly reflective materials, addressing key challenges in absorption efficiency, beam quality, and process stability. Compared to conventional laser technologies, it significantly enhances both processing performance and production efficiency, while unlocking new possibilities for high-precision metal 3D printing.

As the technology continues to evolve and become more cost-effective, green lasers are expected to become a cornerstone technology for reflective material processing and advanced manufacturing, driving the next wave of industrial innovation.