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Optical constants of SUMITA - LaK (Lanthanum crown)
K-LaK12

Wavelength: µm
 (0.365 – 1.548)  
 

Other optical constants

logX   logY   eV

Dispersion formula

$$n^2=2.7624188-1.072042\text{×}10^{-2}λ^{2}+1.9279626\text{×}10^{-2}λ^{-2}-3.7377214\text{×}10^{-5}λ^{-4}+5.4439104\text{×}10^{-5}λ^{-6}-2.8035955\text{×}10^{-6}λ^{-8}$$

Comments

Refractive index is relative to air at standard conditions; Wavelength in dispersion formula is as measured in air and expressed in micrometers

Data

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

References

Sumita Optical Glass Data Book

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