Name: 20mm Dia. Uncoated, λ/20 Fused Silica Window
Brand: TECHSPEC
SKU: 65-860
Price: £119.00

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20mm Dia. Uncoated, λ/20 Fused Silica Window

Uncoated λ/20 Fused Silica Window

Stock #65-860 3-4 days

- +

£119^.00

Qty 1-5
£119.00

Qty 6+
£106.25

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Specifications

General

Type:

Laser Line Window

Physical & Mechanical Properties

Bevel:

Protective as needed

Clear Aperture CA (mm):

18.00

Diameter (mm):

20.00 +0.00/-0.10

Thickness (mm):

3.00 ±0.10

Parallelism (arcsec):

≤5

Young's Modulus (GPa):

Poisson's Ratio:

0.16

Edges:

Fine Ground

Optical Properties

Angle of Incidence (°):

Coating:

Uncoated

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Fused Silica Excimer Grade (Corning 7980 KrF)

Surface Quality:

10-5

Transmitted Wavefront, P-V:

λ/20

Wavelength Range (nm):

200 - 2200

Index of Refraction (n_d):

1.458

Abbe Number (v_d):

67.8

5 J/cm² @ 10ns

Material Properties

Fused Silica Grade:

7980 KrF 0A

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)

Density (g/cm³):

2.20

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Certificate of Conformance:

View

Product Details

R < 0.25% for 266nm, 355nm, 532nm or 1064nm
Low Auto-Fluorescence
Damage Thresholds up to 10 J/cm² @ 10ns @ 1064nm

TECHSPEC® λ/20 High Power Laser Line Windows features a high efficiency, high damage threshold V-coating to maximize transmission at the design wavelength. Damage thresholds ranging from 2 - 10J/cm2 allow easy integration into most Nd:YAG laser systems. The coating is deposited on a precision excimer grade UV grade fused silica substrate for excellent thermal stability, low wavefront distortion, and ultra-low auto-fluorescence. TECHSPEC® λ/20 High Power Laser Line Windows are available in diameters ranging from 5 to 50mm.. For custom options or wedged versions, please contact our Sales Department.

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

20mm Dia. Uncoated, λ/20 Fused Silica Window

Specifications

General

Physical & Mechanical Properties

Optical Properties

Material Properties

Regulatory Compliance

Product Details

Technical Information

Accessories

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Custom

Imaging Lens Selector

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