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All Products / Optics / Windows and Diffusers / UV and IR Windows / ISP Optics Cadmium Telluride (CdTe) Windows
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25.4mm Dia., 2mm Thick, Uncoated, ISP Optics Cadmium Telluride (CdTe) Window | CD-W-25-2

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Cadmium Telluride (CdTe) Windows

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Bevel:
Protective as needed
Clear Aperture (%):
85
Clear Aperture CA (mm):
21.59
Diameter (mm):
25.40 +0.00/-0.13
Thickness (mm):
2.00 ±0.13
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
5.9
Density (g/cm3):
6.2
Edges:
Fine Ground
Index of Refraction nd:
2.653 @ 10μm
Knoop Hardness (kg/mm2):
54
Parallelism (arcmin):
<3
Poisson's Ratio:
0.41
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Cadmium Telluride (CdTe)
Surface Flatness (P-V):
2λ per inch @ 632.8nm
Surface Quality:
60-40
Type:
Protective Window
Wavelength Range (nm):
1000 - 25000
Young's Modulus (GPa):
36.52
Model Number:
CD-W-25-2

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
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Reach 240:
Compliant
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Product Family Description

  • Broad Transmission Range from 1 - 25μm
  • No Absorption Bands between 12 - 25μm
  • Ideal for Longwave IR Spectroscopy

ISP Optics Cadmium Telluride (CdTe) Windows provide broad, flat transmission across the infrared spectrum from 1 - 25μm. Cadmium telluride is a water insoluble material and is relatively low cost compared to infrared materials with similar transmissivity, such as diamond. ISP Optics Cadmium Telluride (CdTe) Windows are ideal for use in low power CO2 systems or in spectroscopy applications requiring longwave IR transmission. With no absorption bands between 12 - 25μm, Cadmium Telluride (CdTe) Windows are also used as substrates for infrared filters.

Note: Cadmium telluride is the softest of the II-VI materials and can be easily scratched or cleaved.