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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 BK7 or UVFS glass
  • Available in 12,7 mm, 25,4 and 50,8 mm diameters
  • Wedge angle option from 0,5° to 3°
  • Dielectric thin film coating deposition service on demand

 

Application examples

 

  • Beam displacement
  • Variable beam steering
  • Protection from undesirable laser cavity feedback
  • Elimination of fringe pattern due to back reflections
Request custom
  • Description
  • Specifications

Plane-parallel windows with high paralellism in some cases cause undesirable effects. Beam intereference by multiple reflections between front and rear surfaces and harmful backreflections to the laser cavity, just to mention a few. To prevent this, windows with a slight wedge might be used. For this purpose we offer uncoated, laser grade polished flat-wedge windows made of BK7 or UVFS glass. Optical elements made from BK7 glass are used for most common visible and near infrared, temperature insensitive applications. It exhibits fairly good optical properties and reasonable price. For high-power and ultraviolet applications optical elements made from UVFS glass are recommended, because of high damage threshold and ultra-high purity providing maximum transmission from 195 nm to 2100 nm.

Flat-wedge windows
Clear aperture >85%
Diameter tolerance +0/-0,15 mm
Thickness tolerance ±0,25 mm
Wedge tolerance ±5 arcmin
Protective chamfers <0,35 mm at 45°
Surface quality Diameter≤25,4 mm: 10-5 S-D
Diameter>25,4 mm: 20-10 S-D
Surface flatness Diameter≤25,4 mm:<λ/[email protected],8 nm
Diameter>25,4 mm:<λ/[email protected],8 nm
Coatings Uncoated, available
Order your item
Material Diameter Thickness Wedge SKU price quantity
UVFS
12,7 mm
5 mm
0,5°
6225
Request
UVFS
25,4 mm
3 mm
6274
Request
UVFS
25,4 mm
6,35 mm
6275
Request
UVFS
50,8 mm
6,35 mm
6276
Request
BK7
12,7 mm
5 mm
0,5°
6277
Request
BK7
25,4 mm
3 mm
6278
Request
BK7
25,4 mm
6,35 mm
6279
Request
BK7
50,8 mm
6,35 mm
6280
Request