D20 ET4mm 1090nm 20KW Protective Window For Fiber Laser Germany Material

d20 mm × et4.0 mm protective window for high-power fiber laser cutting and laser welding heads. this high-duty germany material protective window is made from fused silica with ar coating around 1090 nm and is rated for up to 20 kw when used in a properly maintained and correctly aligned head. installed in front of the focus lens, it helps absorb the impact of spatter, fumes and dust so your main optics stay cleaner for longer.

size:

• diameter (d): 20 mm
• thickness (et): 4.0 mm
• quantity: 1 × protective window

spec:

• optimized for ~1090 nm fiber laser systems
• ar-coated surfaces to reduce reflection and power loss
• power handling: up to 20 kw in a correctly aligned and maintained laser head
• precise thickness and surface flatness for stable beam transmission
• parallel faces to help maintain consistent optical performance

material:

• quartz fused silica – germany material optics
• low absorption and good thermal stability under high power
• durable ar coating for long service life

use:

• protective front window in fiber laser cutting and laser welding heads
• shields the focus lens from dust, fumes and metal spatter
• helps extend focus-lens lifetime and reduce unplanned downtime and cleaning stops

compatibility:

• for fiber laser cutting and welding heads that use round protective windows at d20 mm / et4.0 mm
• commonly used on many raytools / wsx / bodor type heads and similar designs
• always confirm your original window diameter and thickness before ordering

quality:

• each window visually inspected and packed in clean trays
• smooth edges and uniform coating for repeatable, reliable performance in production environments