MGF2 by Generic IR
Standard
Unknown
Environmentally Friendly
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.377744 |
|---|---|
| Abbe Number (Vd) | 106.217612 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.2 — 7.04 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.487551\,\lambda^2}{\lambda^2 - 0.00188218} + \frac{0.39875\,\lambda^2}{\lambda^2 - 0.00895189} + \frac{2.31204\,\lambda^2}{\lambda^2 - 566.136}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.4 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-2.5 \times 10^{-7} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.171 |
|---|---|
| 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: M.J. Dodge, "Refractive Properties of Magnesium Flouride," Appl. Opt. 23
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| MGF2 | Generic Birefringent | 1.377744 | 106.217612 | |
| MGF2-E | Generic Birefringent | 1.389557 | 104.857428 | |
| K-FIR100UV | Sumita | 1.4139 | 101.0 | |
| K-FIR100UV(M) | Sumita | 1.41268 | 100.7 | |
| K-FIR98UV | Sumita | 1.42537 | 97.8 | |
| K-FIR97UV | Sumita | 1.4258 | 97.4 | |
| LITHOTEC-CAF2 | Schott | 1.43385 | 95.23 | |
| K-CaFK95(M) | Sumita | 1.43312 | 95.0 | |
| CAFK95 | Sumita | 1.43425 | 95.0 | |
| K-CaFK95 | Sumita | 1.43425 | 95.0 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LIF | Generic IR | 1.392146 | 97.294682 | |
| CAF2 | Generic IR | 1.433849 | 94.995854 | |
| SRF2 | Generic IR | 1.437925 | 91.593259 | |
| BAF2 | Generic IR | 1.474478 | 81.607872 | |
| IRG9 | Generic IR | 1.486056 | 81.251965 | |
| F_SILICA | Generic IR | 1.458464 | 67.821433 | |
| BEO | Generic IR | 1.718619 | 93.251706 | |
| IRG15 | Generic IR | 1.534275 | 55.700357 | |
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| SAPPHIRE | Generic IR | 1.768234 | 72.237215 |