As advanced manufacturing and medical technologies continue to move toward higher precision and minimally invasive processes, the demand for high-fidelity machining of non-metal materials is growing fast. Plastics, composites, paper-based materials, and biological tissues are now widely used in high-value applications—but processing them with traditional laser wavelengths, such as 1064 nm, often comes with compromises.

Because these wavelengths do not match the intrinsic absorption spectra of many non-metal materials, manufacturers frequently have to rely on additives or surface treatments. The result is increased thermal damage, material degradation, and reduced transparency or purity—issues that limit performance in precision cutting, welding, and medical procedures.

In this context, 2 μm laser technology is emerging as a game changer. This wavelength range aligns closely with the natural absorption peaks of water and many non-metal materials, enabling more efficient energy coupling, cleaner processing, and significantly lower thermal impact. It is precisely this advantage that makes the new 1940 series thulium-doped laser solutions from Han’s Laser a strategic step forward in non-metal precision manufacturing and medical applications.

Why 2 μm Wavelength Matters

The 1940 series is built around a thulium-doped gain medium that delivers laser output near 2 μm—right where many non-metal materials, including wood fibers, paper, polymers, and especially water-containing biological tissues, absorb energy most efficiently. Instead of forcing energy into the material, the laser works with the material’s natural absorption behavior.

This means:

• Higher processing efficiency
• Smaller heat-affected zones
• Better surface quality
• Greater control over delicate or transparent materials

For complex, three-dimensional non-metal parts, this wavelength effectively becomes an “ideal light source” for both precision manufacturing and medical-grade processing.

HSW-1940 Series 200W Power Curve

Key Technical Advantages of the 1940 Series

The 1940 series thulium-doped laser platform is designed for industrial stability and application flexibility:

• Stable, high-efficiency output suitable for long-duration continuous operation
• All-fiber beam delivery, enabling flexible integration with standard robotic arms for 3D plastic cutting and welding
• Eye-safer wavelength range (1400–2000 nm), improving system safety in industrial and medical environments
• High absorption efficiency, especially for water-rich materials, making it ideal for biological tissue processing
• Flexible operation modes, supporting both continuous-wave and modulated output for diverse applications
• Electro-optical conversion efficiency above 25%, helping reduce operating costs and energy consumption

Together, these features create a reliable, scalable laser platform that bridges the gap between laboratory-grade precision and industrial-grade productivity.

HSW-1940 Series 200W 500h Power Stability

Medical Applications: The “Invisible Scalpel” for Minimally Invasive Surgery

Thanks to its strong interaction with water molecules, the 2 μm wavelength is exceptionally well suited for medical procedures that require precise tissue vaporization and coagulation with minimal collateral damage.

Typical applications include:

• Urology and lithotripsy: Precise stone fragmentation with reduced trauma to surrounding tissue
• Laser surgery: Efficient tissue vaporization and coagulation with very low bleeding
• Ophthalmology: Controlled corneal shaping with enhanced procedural accuracy

In clinical practice, this translates into smaller thermal damage zones, faster healing, and shorter recovery times. Procedures such as prostate ablation in urology, ENT treatments for sleep apnea, and dermatological resurfacing can see significantly reduced thermal diffusion—often by around 40% compared to conventional approaches—while maintaining excellent cutting and coagulation performance.

Industrial Manufacturing: A Powerful Tool for High-End Non-Metal Processing

Beyond medicine, the 1940 series laser opens new possibilities in advanced manufacturing:

• Plastic welding: Seamless joining of transparent materials with clean, nearly invisible weld seams
• Thin-film cutting: High-precision processing of ultra-thin materials with smooth, burr-free edges
• Non-metal 3D printing: Faster scanning speeds and improved energy control, boosting productivity while enabling more complex geometries

In applications such as polymer precision machining and micro/nano-scale engraving of non-metal materials, this wavelength advantage can increase processing efficiency by up to 60% while shrinking the heat-affected zone by around 70%. The result is higher part quality, better dimensional stability, and greater design freedom for high-end electronic components and advanced consumer products.

From a Single Laser Light Source to an Open Precision Energy Platform

The release of the 1940 series 200 W (2 μm) fiber laser solution is more than just a new product—it signals a broader shift in laser technology from primarily serving metal processing to enabling plastics, composites, and bio-materials manufacturing at scale.

What’s being built is not merely a laser, but an open precision energy platform:

• High reliability makes it suitable as an industrial backbone
• Eye-safer wavelength and high efficiency reflect a design philosophy focused on safety, sustainability, and performance
• Scalability and flexibility allow it to support everything from medical device micro-processing to low-damage structuring of aerospace composites and direct micro-forming of premium consumer goods

Conclusion

As industries continue to push toward higher precision, lower thermal impact, and greater material diversity, wavelength-optimized laser solutions will play a decisive role. With its strong material absorption match, excellent efficiency, and application flexibility, the 1940 series thulium-doped laser stands out as a core enabling technology for both non-metal 3D printing and minimally invasive medical procedures.

By aligning laser physics with material science and real-world production needs, this 2 μm platform is helping redefine what’s possible in high-end manufacturing and medical innovation—delivering cleaner processes, better outcomes, and a clear path toward the next generation of precision applications.