Compared with nanosecond fiber laser cutting machines, the key advantage of picosecond laser cutting machines lies in their ultra-short pulse width, which enables true "cold processing." This results in higher cutting precision, better edge quality, and a wider range of material compatibility, especially for precision, hard, brittle, and heat-sensitive materials.
Below is a comparison of three laser types.
| Comparison Dimensions: | Conventional Nanosecond Fiber Laser | Nanosecond QCW Fiber Laser | Picosecond Laser |
| Pulse Width: | (10⁻⁹ s) | (10⁻⁹ s) | (10⁻¹² s, 1000 times shorter than nanoseconds) |
| Core Mechanism | Photothermal effect; material is melted/vaporized with noticeable heat diffusion and a clear HAZ. | Controlled photothermal effect; QCW pulses reduce heat accumulation through interval cooling. | "Cold processing"; ultra-short pulses break molecular bonds before heat diffusion, with minimal HAZ. |
| Processing Quality | General; burrs, recast layer, and HAZ are visible, often requiring post-processing. | Improved; smaller HAZ, better control of chipping and micro-cracks. | Excellent; clean, smooth edges with no burrs, no recast layer, and near-zero HAZ. |
| Processing Efficiency | High; fast material removal, ideal for mass production. | Medium–high; strong removal capability, slightly lower average speed due to pulse intervals. | Low–medium; smaller removal per pulse, slower overall speed, especially for thick materials. |
| Material Compatibility | Moderate; suitable for common metals, limited performance on reflective or brittle materials. | Wide; handles reflective metals and brittle materials with better precision. | Very wide; suitable for almost all materials, especially transparent, brittle, and heat-sensitive substrates. |
| Beam Quality (M²) | Excellent (typically <1.5) | Excellent (typically <1.5) | Excellent (typically <1.3) |
| Typical Applications | Metal/plastic marking, engraving, thin metal cutting, standard welding | Sapphire, ceramics, wafer cutting; precision metal welding/cutting; reflective materials | Medical devices, ultra-precision drilling, hydrogen fuel cell processing |
| Equipment Cost | Low | Medium (typically 30%–50% higher than nanosecond) | High (typically 3–5× QCW or more) |
| Maintenance Cost | Low (fiber structure, low maintenance) | Low (fiber structure, low maintenance) | Higher (stricter environment requirements, key components have service life limits) |
YCLaser's core team brings over 10 years of experience in laser processing and equipment R&D, offering customized solutions for specialized applications.
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