TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. 2.0° Nom. Fused Silica Wedge Prism, UV-VIS Coated

TECHSPEC Fused Silica Wedge Prisms

Stock #89-639 10 to 12 days
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Qty 1-5
Qty 6+
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UV-VIS (250-700nm)
Angle of Incidence (°):
Angle Tolerance (arcsec):
Protective bevel as needed
Coating Specification:
Rabs ≤1.0% @ 350 - 450nm
Ravg ≤1.5% @ 250 - 700nm
Coefficient of Thermal Expansion CTE (10-6/°C):
Design Wavelength DWL (nm):
Diameter (mm):
25.00 +0.00/-0.10
Image Orientation:
Beam Deviation
Power (diopters):
Ray Deviation @ 355nm (°):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Surface Flatness (P-V):
Surface Quality:
Thickness (mm):
Wedge Prism
Wavelength Range (nm):
200 - 2200
Wedge Angle:
4° 11'14"

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • Deviates Laser Beam Path from 0.5° - 5.0°
  • Ideal for UV to NIR Beam Steering Applications from 250 to 1064nm
  • Ideal for High Power Beam Steering Applications

TECHSPEC® Fused Silica Wedge Prisms are designed for a range of laser beam steering applications requiring UV-VIS or first through fourth Nd:YAG harmonic Anti-Reflection Coatings. They are optimized to ensure the highest level of system performance using tightly controlled specifications including λ/10 surface flatness, 20-10 surface quality, and a wedge tolerance of 15 or 30 arcseconds. The Nd:YAG coated versions feature high transmittance and guaranteed laser damage thresholds specific to the design wavelength. TECHSPEC® Fused Silica Wedge Prisms utilize a wedge design to deviate laser beam path from 0.5° – 5°. By creating a risley prism pair using two wedge prisms with the same ray deviation, custom beam steering up to two times the wedge deviation is possible. A low coefficient of thermal expansion ensures accurate beam steering in high power laser applications.

Note: Power Diopter is defined as 1cm deviation at a distance of 1m from the prism. TECHSPEC® Wedge Prisms are also available in N-BK7 versions.

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