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

25mm Dia., Uncoated, Fused Silica Wedged Window

TECHSPEC® Fused Silica Wedged Windows

TECHSPEC® Fused Silica Wedged Windows

Stock #34-242
Qty 1-5
Qty 6+
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Clear Aperture CA (mm):
Diameter (mm):
25.00 +0.0/-0.10
Thickness (mm):
3.00 ±0.20
Coefficient of Thermal Expansion CTE (10-6/°C):
0.52 (+5 to +35°C)
0.57 (0 to +200°C)
0.48 (-100 to +200°C)
Fine Ground
Index of Refraction nd:
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Flatness:
λ/10 over 25mm Aperture
Surface Quality:
Wedged Window
Wavelength Range (nm):
200 - 2200
Young's Modulus (GPa):
Wedge Angle:
30 ±10 arcmin

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

TECHSPEC® Fused Silica Wedged Windows are manufactured from UV grade fused silica and feature a 30 arcminute wedge. The wedge of these windows eliminates Etalon effects by preventing back surface reflections from traveling along the same optical path as the transmitted beam. This protects against laser instability, mode-hopping, and power spikes when used in laser cavities and beam interference effects when used externally. TECHSPEC® Fused Silica Wedged Windows are ideal for use in UV or high power laser applications due to their high UV transmittance and insensitivity to temperature variations. These windows can also be used as beam pick-off optics or beam samplers to monitor laser beam properties such as beam power over time.

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