Bevel:

Protective as needed

Clear Aperture (%):

85

Clear Aperture CA (mm):

21.59

Diameter (mm):

25.40 +0.00/-0.13

Thickness (mm):

1.00 ±0.13

Coating:

Uncoated

Coefficient of Thermal Expansion CTE (10^-6/°C):

5.39 (0 to +30°C)

Density (g/cm³):

5.32

Edges:

Fine Ground

Index of Refraction n_d:

3.293 @ 7μm 3.279 @ 10μm 3.267 @ 12μm

Knoop Hardness (kg/mm²):

750

Parallelism (arcmin):

<3

Poisson's Ratio:

0.31

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

Surface Flatness (P-V):

λ/10 @ 10.6μm

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

1000 - 16000

Young's Modulus (GPa):

85

Model Number:

GA-W-25-1

25.4mm Dia., 1mm Thick, Uncoated, ISP Optics Gallium Arsenide (GaAs) Window | GA-W-25-1

Protect your investment.