H2O Refractive Index

Optical constants (n, k) of H2O, covering 0.03 – 2.20 μm wavelength range.

Range 0.034 – 2.198 μm
Data Points 357

Optical Constants at Key Wavelengths

632.8 nm (He-Ne)
n = 1.3313
k = 0.0000
589.3 nm (Na-D)
n = 1.3336
k = 0.0000
532 nm
n = 1.3373
k = 0.0000
1550 nm (Telecom)
n = 1.3109
k = 0.0001

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)nk
0.03400.842170.09074
0.05000.820740.29977
0.06610.903530.53554
0.08201.140630.62920
0.09791.455870.57516
0.11401.543210.39883
0.13001.633850.23922
0.14591.469280.24087
0.16221.652920.13514
0.17991.513340.00006
0.21981.421600.00000
0.26001.388880.00000
0.29991.371440.00000
0.33961.360440.00000
0.38021.352740.00000
0.41981.347220.00000
0.46031.342860.00000
0.50001.339430.00000
0.53951.336620.00000
0.57941.334200.00000
0.61941.332110.00000
0.66071.330240.00000
0.69981.328770.00000
0.73961.327500.00000
0.77981.326380.00000
0.82041.325380.00000
0.85901.324500.00000
0.89951.323650.00000
0.93971.322840.00000
0.97951.322080.00000
1.03991.320950.00000
1.11941.319490.00000
1.19951.318010.00001
1.27941.316470.00001
1.36141.314760.00005
1.43881.313220.00036
1.52051.311600.00017
1.59961.309640.00009
1.67881.307430.00007
1.76201.304730.00011
1.84081.301710.00016
1.91871.298790.00183
1.99991.296910.00110
2.07971.292970.00053
2.15771.288420.00036
2.19791.285790.00034

Sampled data (357 points total). Click "Download Full CSV" for complete data.

Notes

Liquid water (H2O) at 25 °C (from Hale and Querry 1973)

References

D. J. Segelstein. The complex refractive index of water, Master Thesis (1981)
Note: This is a continuation of work of Hale and Querry (1973) providing improved data and extended range.

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