Optical constants of OHARA - LAL (Lanthanum, low-index)
S-LAL60
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.9223334-0.015268924λ^{2}+0.020070735λ^{-2}+0.00049690538λ^{-4}-1.5326299\text{×}10^{-05}λ^{-6}+1.0772354\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.3e-06 1.19e-08 -1.31e-12 4.87e-07 4.79e-10 0.196 nd: 1.725999 Vd: 53.565698 glass_code: 726536 glass_status: preferred density: 3.91 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.6e-06 K-1 - temperature_range: 20 300 °C coefficient: 7e-06 K-1 dPgF: -0.0091 climatic_resistance: 2.0 acid_resistance: 52.0 phosphate_resistance: 3.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets