Senior sales engineer
Arminas Butkus +370 5 219 4884
Flat-wedge windows
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Flat-wedge windows

Main features

  • Fabricated from high-quality, laser grade polished UV grade fused silica, BK7 glasses
  • Standard diameters are ø12,7 mm, ø25,4 and ø50,8 mm
  • Wedge angle selection from 0,5° to 3°
  • Coatings, custom substrate material, dimensions are available upon request

Application examples

  • Protection from undesirable laser cavity feedback
  • Elimination of fringe pattern due to back reflections
  • Variable beam steering
  • Beam sampling
Request custom View stock
  • Description
  • Standard specifications

Windows with a slight wedge are commonly used to prevent harmful laser cavity feedback and beam interference effects. Standard 4Lasers uncoated flat-wedge windows are fabricated from BK7 and UV grade fused silica optical glass. UV grade fused silica glass flat-wedge window is a good option for UV, ultrashort pulse, and high-power laser applications because of low sensitivity to temperature variations, relatively high damage threshold, and UV transmission down to 185 nm. The BK7 glass window is a cost-effective choice for visible and near-infrared range, low/mid-power laser, and non-laser applications.

Flat-wedge windows
Substrate material BK7, UVFS
Wavelength range Uncoated BK7 windows: 350 nm - 2 μm
Uncoated UVFS windows: 185 nm - 2,1 μm
Clear aperture >85%
Diameter tolerance +0,0/-0,15 mm
Thickness tolerance ±0,25 mm
Wedge tolerance ±5 arcmin
Protective chamfers <0,35 mm at 45°
Surface quality ⌀≤25,4 mm: 10-5 S-D
⌀>25,4 mm: 20-10 S-D
Surface flatness ⌀≤25,4 mm:<λ/8@632,8 nm
⌀>25,4 mm:<λ/5@632,8 nm
Coatings Uncoated, available upon request
Order your item
Material Diameter Thickness Wedge SKU PRICE QUANTITY
UVFS
12,7 mm
5 mm
0,5°
6225
20 €
UVFS
25,4 mm
3,1 mm
6274
32 €
UVFS
25,4 mm
6,35 mm
6275
32 €
UVFS
50,8 mm
6,35 mm
6276
74 €
BK7
12,7 mm
5 mm
0,5°
6277
18 €
BK7
25,4 mm
3 mm
6278
30 €
BK7
25,4 mm
6,35 mm
6279
30 €
BK7
50,8 mm
6,35 mm
6280
54 €