F_SILICA by Generic IR

Standard Unknown Environmentally Friendly

F_SILICA by Generic IR is a standard optical glass. It transmits from 0.21 to 3.71 µm with an nd of 1.458464 and a Vd of 67.821433. It has very low thermal expansion (CTE of 0.51×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.21–3.71 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.21–3.71 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.210–3.710 µm
Optical Properties
Refractive Index (nd) 1.458464
Abbe Number (Vd) 67.821433
Dispersion Formula Sellmeier
Wavelength Range 0.21 — 3.71 µm
$$n(\lambda) = \sqrt{1 + \frac{0.696166\,\lambda^2}{\lambda^2 - 0.00467915} + \frac{0.407943\,\lambda^2}{\lambda^2 - 0.0135121} + \frac{0.897479\,\lambda^2}{\lambda^2 - 97.934}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 0.51
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.237 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.2
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: The Infrared & Electro-Optical Systems Handbook V. III

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
LITHOSIL-Q Schott 1.45844 67.83
SK-1300 Ohara 1.458567 67.837244
C79-80 Corning 1.458467 67.795012
SK-1310 Ohara 1.458663 67.854535
SUPRASIL Heraeus 1.458464 67.878205
INFRASIL Heraeus 1.458563 67.664757
HOMOSIL Heraeus 1.458563 67.664757
HERASIL Heraeus 1.458563 67.664757
HOQ Heraeus 1.458563 67.664757
KDP-E Generic Birefringent 1.468324 68.984949
Similar Glasses (Generic IR)
Glass Manufacturer nd Vd Compare
IRG9 Generic IR 1.486056 81.251965
BAF2 Generic IR 1.474478 81.607872
IRG15 Generic IR 1.534275 55.700357
IRGN6 Generic IR 1.589096 56.33564
SRF2 Generic IR 1.437925 91.593259
KCL Generic IR 1.490213 43.33857
CAF2 Generic IR 1.433849 94.995854
IRG7 Generic IR 1.564424 43.736647
LIF Generic IR 1.392146 97.294682
GEO2 Generic IR 1.608459 41.728763
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