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ri_water

Constants​

Refractive index of pure liquid water (n + i k), wavelength in nm. Assumptions: 20 °C, 1 atm, salinity 0‰. Sources (composite):

  • n (200–1100 nm): Daimon & Masumura, Applied Optics 46, 3811–3820 (2007) [20 °C fit]
  • n,k (0.2–200 µm): Hale & Querry, Applied Optics 12, 555–563 (1973)
  • k extension and consistency cross-checks: Segelstein, University of Missouri–Kansas City (1981), PhD thesis Notes:
  • Linear interpolation is used by ParameterLookupTable; sampling is dense near strong absorption bands (∼970, 1200, 1450, 1940, 2950, 6000–10000 nm) to mitigate interpolation error.
  • Values in the visible (400–700 nm) preserve the project’s previous table exactly to avoid regressions.

Functions​

💧 Water refractive index

WATER_REFRACTION_INDEX_LUT​

Refractive index of pure liquid water (n + i k), wavelength in nm. Assumptions: 20 °C, 1 atm, salinity 0‰. Sources (composite):

  • n (200–1100 nm): Daimon & Masumura, Applied Optics 46, 3811–3820 (2007) [20 °C fit]
  • n,k (0.2–200 µm): Hale & Querry, Applied Optics 12, 555–563 (1973)
  • k extension and consistency cross-checks: Segelstein, University of Missouri–Kansas City (1981), PhD thesis Notes:
  • Linear interpolation is used by ParameterLookupTable; sampling is dense near strong absorption bands (∼970, 1200, 1450, 1940, 2950, 6000–10000 nm) to mitigate interpolation error.
  • Values in the visible (400–700 nm) preserve the project’s previous table exactly to avoid regressions.

Kind: global constant

ri_water(result, wavelength_nm)​

💧 Water refractive index

Kind: global function

ParamTypeDescription
resultArray.<number>complex number, refraction index
wavelength_nmnumberin nanometers