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Optical constants of OHARA - LAH (Lanthanum, high-index)
S-LAH60
Wavelength:
µm
(0.34 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.95243469λ^2}{λ^2-0.0106442437}+\frac{0.30710021λ^2}{λ^2-0.0456735302}+\frac{1.56578094λ^2}{λ^2-110.28141}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 6.88e-06 1.25e-08 -3.24e-11 6.63e-07 7.1e-10 0.271
nd: 1.834000
Vd: 37.160487
glass_code: 834372
density: 4.43 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.1e-06 K-1
dPgF: -0.0037
climatic_resistance: 1.0
acid_resistance: 4.2
phosphate_resistance: 1.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets