Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn4

Wavelength: µm

(0.365 – 1.548)

Derived optical constants

logX logY eV

Dispersion formula

$$n^2=3.1018721-1.1787085\text{×}10^{-2}λ^{2}+2.9649143\text{×}10^{-2}λ^{-2}+1.0754507\text{×}10^{-4}λ^{-4}+7.1438025\text{×}10^{-5}λ^{-6}-1.6090645\text{×}10^{-6}λ^{-8}$$

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

Reflection calculator

Angle of incidence (0~90°):
Direction: in out

Reflectance (at µm)[ i ]

R_S = (S-polarized)
R_P = (P-polarized)
R = (non-polarized, (R_S+R_P)/2 )

Reflection phase[ i ]

ɸ = °
ɸ_S = °
ɸ_P = °

Brewster's angle[ i ]

θ_B = °

Critical angle[ i ] [ i ]

θ_C = °

Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn4

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula

Comments

Data

References

Optical transmission calculator

Transmittance (at µm)[ i ]

Reflection calculator

Reflectance (at µm)[ i ]

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

More info - wiki

Optical constants of SUMITA - LaSF (Lanthanum dense flint)K-LaSFn4

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula

Comments

Data

References

Optical transmission calculator

Transmittance (at µm)[ i ]

Reflection calculator

Reflectance (at µm)[ i ]

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

More info - wiki

Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn4