GEO2 by Generic IR
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Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
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Optical Properties
| Refractive Index (nd) | 1.608459 |
|---|---|
| Abbe Number (Vd) | 41.728763 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.36 — 4.3 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.806866\,\lambda^2}{\lambda^2 - 0.00475722} + \frac{0.718158\,\lambda^2}{\lambda^2 - 0.0237056} + \frac{0.854168\,\lambda^2}{\lambda^2 - 140.231}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.3 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.604 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
source: Handbook of Optics Vol. II
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAM25 | Ohara | 1.60323 | 42.320943 | |
| BAFD5 | Hoya | 1.603232 | 42.391075 | |
| BASF5 | Sumita | 1.60323 | 42.5 | |
| K-BaSF5 | Sumita | 1.60323 | 42.5 | |
| BAFD16 | Hoya | 1.6 | 42.456745 | |
| BAFD3 | Hoya | 1.607171 | 40.359687 | |
| BAM23 | Ohara | 1.607167 | 40.26316 | |
| BASF3 | Sumita | 1.60717 | 40.2 | |
| BAF7 | CDGM | 1.614131 | 40.025731 | |
| H-BAF7 | CDGM | 1.61413 | 39.985319 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| IRG7 | Generic IR | 1.564424 | 43.736647 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| KBR | Generic IR | 1.559967 | 31.977241 | |
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| KCL | Generic IR | 1.490213 | 43.33857 | |
| IRG15 | Generic IR | 1.534275 | 55.700357 | |
| MGO | Generic IR | 1.737505 | 53.505455 | |
| SPINEL | Generic IR | 1.716226 | 60.607355 |