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):

12.6

Density (g/cm³):

4.43

Edges:

Fine Ground

Index of Refraction n_d:

2.519 @ 3μm
2.503 @ 8μm
2.490 @ 12μm

Knoop Hardness (kg/mm²):

170

Parallelism (arcmin):

<3

Poisson's Ratio:

0.215

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

AMTIR-1 (Ge₃₃As₁₂Se₅₅)

Surface Flatness (P-V):

λ/10 @ 10.6μm

Surface Quality:

40-20

Type:

Protective Window

Wavelength Range (nm):

750 - 14000

Young's Modulus (GPa):

21.2

Model Number:

AM-W-25-1

25.4mm Dia., 1mm Thick, Uncoated, ISP Optics AMTIR-1 Window | AM-W-25-1