20mm Dia., 2mm Thick, VIS-NIR Coated, λ/4 Fused Silica Window

TECHSPEC® λ/4 UV Fused Silica Windows

Stock #14-987 New

£86.70

Qty 1-5
£86.70

Qty 6
£69.36

Volume Pricing
Request a Quote

Curves eDrawings: eprt IGES PDF Drawings STEP: step

+ Add to Saved List

Compare

Abbe Number (v_d):

67.8

Clear Aperture (%):

Diameter (mm):

20.00

Dimensional Tolerance (mm):

+0.00/-0.10

Thickness (mm):

2.00 ±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

Density (g/cm³):

2.2

Index of Refraction n_d:

1.458

Parallelism (arcmin):

Poisson's Ratio:

0.16

Substrate:

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):

Knoop Hardness (GPa):

522

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.