RefractiveIndex.INFO Refractive index database




Optical constants of Fused silica (fused quartz)
Malitson 1965: n 0.21-3.71 µm

Wavelength: µm
 (0.21 – 6.7)  

Derived optical constants

logX   logY   eV

Dispersion formula [ i ]



Fused silica, 20 °C


[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 20 °C


1) I. H. Malitson. Interspecimen comparison of the refractive index of fused silica, J. Opt. Soc. Am. 55, 1205-1208 (1965)
2) C. Z. Tan. Determination of refractive index of silica glass for infrared wavelengths by IR spectroscopy, J. Non-Cryst. Solids 223, 158-163 (1998)
* Sellmeier formula is reported in Ref. 1 for the 0.21-3.71 μm wavelength range. Ref. 2 verifies the validity of the formula up to 6.7 μm.

More info - wiki

Fused silica (or fused quartz, or quartz glass) is a type of glass containing primarily silica (SiO2) in amorphous (non-crystalline) form.

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