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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF81

Wavelength: µm
 (0.340 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.8861875λ^2}{λ^2-0.00991169457}+\frac{0.294671919λ^2}{λ^2-0.0409687583}+\frac{1.27989084λ^2}{λ^2-97.797523}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.18e-06 1.52e-08 1.59e-10 5.99e-07 9.97e-11 0.282
nd: 1.808800
Vd: 40.999441
glass_code: 809410
density: 4.55 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.4e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.1e-06 K-1
dPgF: -0.0059

Comments

anneal rate:4℃/h

References

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets

Data

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

INFO

CDGM Glass Co., Ltd.

CDGM Glass Co., Ltd. is a leading optical glass supplier in China with a worldwile distribution network.

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