LiI Refractive Index

Optical constants (n, k) of LiI, covering 0.25 – 2.18 μm wavelength range.

Range 0.250 – 2.177 μm
Data Points 48

Optical Constants at Key Wavelengths

632.8 nm (He-Ne)
n = 1.9543
k = 0.0000
589.3 nm (Na-D)
n = 1.9549
k = 0.0000
532 nm
n = 1.9569
k = 0.0000

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)nk
0.25002.004920.00000
0.26181.996490.00000
0.27411.989760.00000
0.28701.984290.00000
0.30061.979780.00000
0.31471.976000.00000
0.32961.972800.00000
0.34511.970070.00000
0.36141.967730.00000
0.37841.965690.00000
0.39621.963920.00000
0.41491.962370.00000
0.43451.961010.00000
0.45491.959800.00000
0.47641.958740.00000
0.49881.957790.00000
0.52231.956940.00000
0.54691.956180.00000
0.57271.955500.00000
0.59971.954890.00000
0.62801.954340.00000
0.65761.953840.00000
0.68861.953390.00000
0.72101.952980.00000
0.75501.952610.00000
0.79061.952270.00000
0.82781.951960.00000
0.86681.951670.00000
0.90771.951410.00000
0.95051.951170.00000
0.99531.950940.00000
1.04221.950730.00000
1.09131.950530.00000
1.14271.950340.00000
1.19661.950160.00000
1.25301.949990.00000
1.31201.949820.00000
1.37391.949660.00000
1.43861.949500.00000
1.50641.949350.00000
1.57741.949190.00000
1.65171.949030.00000
1.72961.948870.00000
1.81111.948710.00000
1.89641.948540.00000
1.98581.948360.00000
2.07941.948180.00000
2.17741.947980.00000

Sampled data (48 points total). Click "Download Full CSV" for complete data.

Notes

297 K (24 °C).

References

H. H. Li. Refractive index of alkali halides and its wavelength and temperature derivatives. J. Phys. Chem. Ref. Data 5, 329-528 (1976) and references therein.
* Sellmeier formula derivation is based on a single data point and knowledge of the dielectric constants and the characteristic absorption peaks.

Related Materials (Main)

Need to measure LiI thin film thickness?

Acuitik film thickness measurement systems offer sub-nanometer non-contact precision.