Chalcogenide glass sphere/asphere (IR glass)
CPG is working with a lot of material vendor in chalcogenide glass: Schott, Virton, Umicore, CDGM, NHG etc.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Composition | Ge₃₃As₁₂Se₅₅ |
| Density | 4.41 g/cm³ |
| Thermal expansion | 12.5 · 10–⁶/K |
| Transition temperature | 368 °C |
| Thermal change dn/dT* | 94.8 · 10–⁶/K |
| Thermal change dn/dT* | 67.7 · 10–⁶/K |
| Thermal change dn/dT* | 67.1 · 10–⁶/K |
| Refractive index | 2.5971 |
| Refractive index | 2.5104 |
| Refractive index | 2.4968 |
| Composition | Ge₁₀As₄₀Se₅₀ |
| Density | 4.47 g/cm³ |
| Thermal expansion | 20.0 · 10–⁶/K |
| Transition temperature | 225 °C |
| Thermal change dn/dT* | 46.0 · 10–⁶/K |
| Thermal change dn/dT* | 21.15 · 10–⁶/K |
| Thermal change dn/dT* | 20.3 · 10–⁶/K |
| Refractive index | 2.7249 |
| Refractive index | 2.6192 |
| Refractive index | 2.6090 |
| Composition | Ge₂₈Sb₁₂Se₆₀ |
| Density | 4.66 g/cm³ |
| Thermal expansion | 14.0 · 10–⁶/K |
| Transition temperature | 285 °C |
| Thermal change dn/dT* | 79.2 · 10–⁶/K |
| Thermal change dn/dT* | 62.0 · 10–⁶/K |
| Thermal change dn/dT* | 61.1 · 10–⁶/K |
| Refractive index | 2.7284 |
| Refractive index | 2.6183 |
| Refractive index | 2.6030 |
| Composition | As₄₀Se₆₀ |
| Density | 4.63 g/cm³ |
| Thermal expansion | 21.4 · 10–⁶/K |
| Transition temperature | 185 °C |
| Thermal change dn/dT* | 76.2 · 10–⁶/K |
| Thermal change dn/dT* | 33.4 · 10–⁶/K |
| Thermal change dn/dT* | 32.2 · 10–⁶/K |
| Refractive index | 2.9316 |
| Refractive index | 2.7909 |
| Refractive index | 2.7781 |
| Composition | As₄₀Se₆₀ |
| Density | 3.20 g/cm³ |
| Thermal expansion | 22.5 · 10–⁶/K |
| Transition temperature | 197 °C |
| Thermal change dn/dT* | 15.6 · 10–⁶/K |
| Thermal change dn/dT* | -3.2 · 10–⁶/K |
| Thermal change dn/dT* | -3.7 · 10–⁶/K |
| Refractive index | 2.4841 |
| Refractive index | 2.4129 |
| Refractive index | 2.3842 |
Key Features
Datasheet
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Supplier Information
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