Frequently Asked Questions
What is the tolerance of your laser cutting service?
We can achieve ±5μm precision depending on material and thickness.
Can you process ultra-thin glass?
Yes, we can cut glass as thin as 0.1mm with no cracking or chipping.
What materials can you process?
glass, ceramics, silicon, metals, polymers, optical fibers, sapphire, and ruby
Can you do drilling micro hole before tempered or after tempered?
We can do micro drilling before tempered and after chemical tempered also, but after physical tempered can't drill
What is the main difference between femtosecond and picosecond laser cutting?
A – Pulse duration. Femtosecond lasers (10⁻¹⁵ s) end before heat diffuses, achieving zero heat‑affected zone. Picosecond lasers (10⁻¹² s) are still ultrafast but allow 1–5 µm of thermal diffusion, which can cause minor micro‑cracks in brittle materials.Can a picosecond laser cut glass without chipping?
A – Yes, but some micro‑chipping (typically <5 µm) is common. For optical‑grade edges or high‑strength glass components, a femtosecond laser is recommended.Which laser is better for cutting thin metal foils?
A – Picosecond laser is often the better choice for metals: high throughput, good edge quality, and lower cost. Femtosecond is only needed if zero heat damage is absolutely critical.Can femtosecond lasers cut transparent materials like glass from the inside?
A – Yes. This is a unique capability of femtosecond lasers. The laser can be focused inside the material to create subsurface channels or 3D structures without damaging the surface – impossible with picosecond or nanosecond lasers.Is femtosecond laser cutting slower than picosecond?
A – Generally yes. Femtosecond lasers remove less material per pulse, so total processing time is longer. However, for many high‑precision applications (medical, optical, microfluidic), the yield improvement justifies the slower speed.What materials can be cut with a femtosecond laser?
A – Glass (borosilicate, fused silica, sapphire), ceramics, diamond, silicon, thin metals, polymers (PET, polyimide, PDMS), and composites. It is especially strong for brittle or heat‑sensitive materials.What is the minimum feature size for each laser type?
A – Femtosecond: ≥5 µm. Picosecond: ≥15 µm. For features smaller than 10 µm, femtosecond is the only reliable option.Which laser is more expensive to buy and operate?
A – Femtosecond systems have higher upfront cost and similar operating cost. Picosecond systems are more affordable. YMJ Optical offers both, so you only pay for the capability you need.Can the same machine do both femtosecond and picosecond cutting?
A – No. They require different laser sources. Some R&D labs keep both, but production lines are usually optimised for one. YMJ has separate femtosecond and picosecond workcells.How do I know which laser I need for my project?
A – Send your material type, thickness, feature size, edge quality requirement, and volume to YMJ Optical. We will perform sample cuts on both lasers and provide a recommendation with data. No charge for qualified R&D or commercial projects.
