Optics for high-power
CO₂ and fiber lasers.
ZnSe focusing lenses and copper turning mirrors for 10.6 µm; fused-silica windows and collimating/focusing groups for ~1.07 µm fiber heads. Same RFQ form — say which laser.
ZnSe CO2 focusing lens
Two laser families, one RFQ.
CO2 cutting heads live on CVD ZnSe and copper. Fiber (≈1.07 µm) heads live on fused silica windows and collimating/focusing doublets. Mixing the two coatings is how optics fail in the first week.
- CO2 line10.6 µm
- Fiber line1060 – 1080 nm
- Typical Ø12.7 · 19.05 · 25.4 · 38.1 · 50.8 mm
- EFL (CO2)38 – 254 mm (1.5–10 in)
- Lead time4–6 wk coated · faster on stock blanks
CO2 focusing lenses
Meniscus or plano-convex CVD ZnSe with AR @ 10.6 µm. Low-absorption and ultra-low-absorption grades when thermal lensing is the limit, not the coating residual R.
- T / surface≥ 99.4% typical AR
- AbsorptionGrade-dependent · quoted
- LIDT (CW)~15–25 kW/cm2
Protective windows
ZnSe output windows for CO2 resonators and process cells. Fused-silica cover slides for 1 µm heads — 0° AOI, AR both faces, thickness to the head OEM print.
- CO2ZnSe AR 10.6 µm
- FiberSiO2 AR 1064 nm
Beam-delivery mirrors
Plano copper and silicon, spherical, and water-cooled copper for kW paths. Gold or dielectric HR where the print asks.
- R @ 10.6 µm> 98% (Cu)
- CoolingUncooled · water
1 µm collimation / focus
Spheric and aspheric fused-silica lenses, collimating-focusing doublets and zoom groups for fiber cutting heads. Quote the fiber NA and the required spot, not only the EFL.
- Band1030 – 1090 nm
- FormSinglet · doublet · zoom
Cavity optics
Output couplers, rear HR and total reflectors for CO2 resonators. Partial-R is a coating specification, not a catalogue guess — send the desired R and radius.
- OC reflectanceTo print
- RadiusPlano · spherical
Nozzles & ceramics
Drop-in dimensions for common industrial heads (Amada, Trumpf, Bystronic, Precitec and others). Send the OEM part number or a caliper drawing — we do not need the machine to quote the optic.
- Quote withOEM P/N or print
- Optics firstNozzle is optional
ZnSe is not a 1 µm window.
A 10.6 µm AR stack is absorbing at 1 µm. A 1 µm AR stack does nothing useful at 10.6 µm. If the head changed from CO2 to fiber, the entire optic set changes — substrate included.
- CO2 10.6 µmZnSe · Cu · Si mirrors
- Fiber ~1.07 µmFused silica · dielectric HR
- Thermal lensingZnSe under CW CO2
- AR realityResidual R at 10.6 µm
What we need from the head.
- Laser type and power (CO2 vs fiber, CW or pulsed)
- Diameter, edge thickness and EFL — or the OEM optic P/N
- Meniscus vs plano-convex, and working distance if known
- Assist-gas / contamination environment
- Quantity per year (consumable vs first article)
Related
- ZnSe gradeMaterials
- Copper mirrorsDiamond-turned Cu
- CoatingsAR @ 10.6 µm
Quote the optic, not the brochure.
Head model or a drawing is enough to start. Power density helps us pick the grade.