K Refractive Index

Name: K Refractive Index (n, k)
Creator: Acuitik
License: https://creativecommons.org/licenses/by/4.0/
Keywords: K, refractive index, n, k, optical constants, thin film

Optical constants (n, k) of K, covering 0.31 – 2.12 μm wavelength range.

Range 0.313 – 2.119 μm

Data Points 21

Optical Constants at Key Wavelengths

589.3 nm (Na-D)

n = 0.0531

k = 1.6195

532 nm

n = 0.0492

k = 1.4326

1550 nm (Telecom)

n = 0.0658

k = 4.7512

Data Table (Sampled)

Wavelength (μm)	n	k
0.3125	0.28674	0.09067
0.3341	0.08859	0.28783
0.3650	0.05189	0.54927
0.4046	0.04067	0.79916
0.4200	0.04122	0.89761
0.4400	0.04262	1.02069
0.4700	0.04257	1.13922
0.5050	0.04569	1.28027
0.5459	0.04921	1.43263
0.5998	0.05310	1.61951
0.6620	0.05002	1.83916
0.7501	0.04422	2.19362
0.8598	0.04008	2.55766
1.0096	0.04001	3.03671
1.1752	0.04447	3.57519
1.3447	0.05588	4.18726
1.5307	0.06577	4.75124
1.6892	0.07855	5.30247
1.8395	0.09100	5.79122
1.9806	0.10625	6.31991
2.1194	0.11869	6.72340

Sampled data (21 points total). Click "Download Full CSV" for complete data.

References

N. V. Smith. Optical constants of sodium and potassium from 0.5 to 4.0 eV by split-beam ellipsometry. Phs. Rev. 183, 634-644 (1969)

Need to measure K thin film thickness?

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

View Products Contact Us

K Refractive Index

Optical Constants at Key Wavelengths

n, k Dispersion Curves

Data Table (Sampled)

References

Related Materials (Main)

Need to measure K thin film thickness?

K Refractive Index

Optical Constants at Key Wavelengths

n, k Dispersion Curves

Data Table (Sampled)

References

Related Materials (Main)

Need to measure K thin film thickness?

Verify to Download

Download Limit Reached