BK7/ UV Fused Silica/Sapphire Glass Wedge Window Quality Choice
BK7/UV fused silica/Sapphire glass wedge window
Wedge prisms can be applied singularly, to deviate a laser beam a specified angle,or with an additional wedge prism for laser beam steering applications
- When making use of one single wedge prism the incident beam of light is refracted at a particular deviation angle. Rotating the wedge causes the deviated beam trace to specify out a circle with an angle equivalent to two times the original deviation angle.
- While using a pair of wedge prisms - due to the fact that every prism is able to trace out a circle of two times the deviation angle, the complete deviation by two prisms is 4 times the deviation angle.
- By controlling the angle of every prism individually, the beam can be positioned at just about any position within the circle. This often is used for scanning with a beam different areas in imaging applications. Additionally, 2 wedge prisms enable to fix an elliptical figure of a diode output (anamorphic pair for beam shaping).
N-BK7 Wedge Prisms are best for laser beam steering applications and are offered in 2°to 10°.Moreover, they can be quoted uncoated as well as coated with any of three standard AR coatings below
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Wedged Substrate,BK7,Fused silica,CaF2,Sapphire,0.5/1/2/3degree
- BK7, Fused Silica and Excimer Grade Fused Silica
- Available in wedge angles 0.5, 1, 2 and 3 degrees
- Wedge angle used to reduce reflection from rear surface
Technical Specifications:
| Material | BK7,UV Fused Silica,Sapphire,CaF2 as request |
| Diameter | 10mm,15mm,20mm,25mm,50mm,100mm |
| Angle Tolerance |
+/-3arc min, +/-5arc min,+/-30'' |
| Bevel |
0.2mm x 45° typical |
| Clear Aperture |
>90% |
| Dimension tolerance | +0/-0.1mm |
surface flatness |
lambda/4 |
thickness |
3mm, 5mm,8mm |
| wedge angle |
0.5°, 1°, 2°,3°,4°,6°,8°,10° as request |
| Coating |
A: AR Coating 350nm-650nm B: AR Coating 650nm-1050nm C: AR Coating 1050nm-1580nm |
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