Optical constants of OHARA - YGH
S-YGH51
Wavelength:
µm
(0.28–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.0828017λ^2}{λ^2-0.018115636}+\frac{0.933988681λ^2}{λ^2-0.00304157575}+\frac{1.32367286λ^2}{λ^2-91.0353195}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.86e-06 1.38e-08 -1.69e-12 5.51e-07 6.54e-10 0.17
nd: 1.754998
Vd: 52.321434
glass_code: 755523
density: 4.4 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7e-06 K-1
dPgF: -0.0093
climatic_resistance: 1.0
acid_resistance: 51.0
phosphate_resistance: 2.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets