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Optical constants of He (Helium)
Ermolov et al. 2015: n 0.09-1.00 µm

Wavelength: µm
 (0.09 – 1)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{2.16463842\text{×}10^{-05}λ^2}{λ^2+6.80769781\text{×}10^{-04}}+\frac{2.10561127\text{×}10^{-07}λ^2}{λ^2-5.13251289\text{×}10^{-03}}+\frac{4.75092720\text{×}10^{-05}λ^2}{λ^2-3.18621354\text{×}10^{-03}}$$

Conditions & Spec sheet

n_absolute: true
temperature: 0 °C
pressure: 101325 Pa

Comments

Standard conditions. 0 °C, 760 torr (101.325 kPa).

References

A. Ermolov, K. F. Mak, M. H. Frosz, J. C. Travers, P. St. J. Russell, Supercontinuum generation in the vacuum ultraviolet through dispersive-wave and soliton-plasma interaction in a noble-gas-filled hollow-core photonic crystal fiber, Phys. Rev. A 92, 033821 (2015)

Data

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

INFO

Helium, He

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