Name: 12.5mm Dia., 3mm Thick, VIS-NIR Coated, λ/4 Fused Silica Window
Brand: TECHSPEC
SKU: 14-985
Price: $106.00

Abbe Number (v_d):

67.8

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

11.25

Diameter (mm):

12.50 +0.00/-0.10

Thickness (mm):

3.00 ±0.10

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

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

Edges:

Fine Ground

Index of Refraction n_d:

1.458

Knoop Hardness (kg/mm²):

522

Parallelism (arcmin):

Poisson's Ratio:

0.16

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

Fused Silica (Corning 7980)

Surface Quality:

40-20

Transmitted Wavefront, P-V:

λ/4

Type:

Protective Window

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

Young's Modulus (GPa):

Regulatory Compliance

RoHS:

Compliant

Product Family Description

Available Uncoated or BBAR Coated for UV, Visible, and NIR
Ideal for Imaging Applications
Standard Diameter Sizes from 10 to 75mm
1λ or λ/10 UV Fused Silica Windows Also Available

TECHSPEC® λ/4 UV Fused Silica Windows are manufactured with 40-20 surface quality and λ/4 transmitted wavefront error specifications, making them ideal for imaging applications. Featuring UV fused silica substrates, these windows provide high transmission from the ultraviolet (UV) through the visible and near-infrared (NIR). Broadband anti-reflection (BBAR) coating options are available to minimize reflection losses and increase transmission. TECHSPEC λ/4 UV Fused Silica Windows are used in optical imaging applications, in low to medium powered laser applications, and as protective windows, especially in applications requiring transmission of UV light. Standard sizes from 10 to 75mm in diameter are available in a variety of thicknesses; please contact us for custom sizes or coatings for your application.

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