D37 ET7 Protective Window 1090nm 60 kW for Fiber Laser Cutting Heads

d37 × et7 mm protective window for fiber laser cutting heads rated up to 60 kw. the 1090 nm fused silica window takes the spatter, fumes and dust from the cut so the focusing optics behind it stay clean.

size:

• diameter (d): 37 mm
• thickness (et): 7 mm
• pack: 1 × protective window

spec:

• ar coating optimised for 1090 nm fiber laser systems
• power rating: up to 60 kw in a clean, correctly aligned cutting head
• thick 7 mm window for high-power heads and higher gas pressure
• parallel, flat faces keep focal position and beam quality stable

material:

• fused silica (quartz) optical glass
• low absorption at fiber laser wavelengths, limiting thermal lensing
• durable ar coating on both faces

use:

• protective window in fiber laser cutting heads
• shields the focus lens from dust, fumes and metal spatter
• extends focus lens life and reduces unplanned cleaning stops
• high-power cutting of thick plate on 30 kw+ sources

compatibility:

• for fiber laser cutting heads that use round d37 mm × et7 mm protective windows
• also available in a 40 kw and 20 kw version in the same size; choose the class that matches your laser source
• always confirm your original window diameter and thickness before ordering

quality:

• surface quality and coating checked before packing
• diameter and thickness verified against the marked size
• sealed packaging against dust and fingerprints