Wedged Substrate BK7 30mm Diameter 0.5 Degree Wedge Angle λ/20

WSB-30C05-20-0.5

Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.
◦It can also be used as a prism to refract at a small angle. Beam deflection angle δ can be calculated refractive index n, from the wedge angle α.
δ = sin−1( n sinα) − α ≒( n − 1) α
◦In BK7, 0.52 times the angle of the wedge, and in synthetic fused silica, 0.46 times the angle of the wedge. (Visible range, normal incidence)
More Information
Name Wedged Substrate BK7 30mm Diameter 0.5 Degree Wedge Angle λ/20
Weight 0.0090lbs
Standard Coatings Available No
Guide
  • An arrow mark on the thicker side of the edge indicates front surface of the substrate.
  • It is also available beam sampler (BS4) coated with anti-reflection coating on the back.
  • WEB Reference Catalog Code/W3025
  • It is also available fabrication of the wedged substrates with a requested coating.
Remark -
Attention
  • Wedged substrates are not coated on both sides. There is a 3.5 to 4% reflection of the surface of the glass.
  • If the wedged substrate is inserted in the optical path of the laser beam, the transmitted beam is inclined slightly causing the refraction.
Image Label Wedged Substrate BK7 30mm Diameter 0.5 Degree Wedge Angle λ/20
Diameter φD 30mm
Material BK7
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 10−5
In stock
SKU
WSB-30C05-20-0.5
SGD 237.20

Delivery in : in stock

Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.

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