Optical constants

Refractive index of H-LAF3B (CDGM)

H-LAF3B: n,k 0.365–2.325 µm

Data
formula 2 + tabulated k
Range
0.365–2.325 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.325 µm
Refractive index n
1.744
Extinction coefficient k
8.27428e-09
Permittivity ε1
3.04152
Permittivity ε2
2.88607e-08
Absorption coefficient α
0.00176953 cm⁻¹
Penetration depth δ = λ/(2πk)
1.13024e+10 nm
Abbe number Vd
44.9
Chromatic dispersion dn/dλ
-0.0846927 µm⁻¹
Group index ng
1.79376
Group velocity dispersion
158.911 fs²/mm
Dispersion parameter D
-866.941 ps/(nm·km)
Photon energy
2.11001 eV

ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith
import lightsmith as ls

# H-LAF3B (CDGM): H-LAF3B
cdgm_h_laf3b = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAF3B", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_laf3b.range_nm)  # (365, 2325) nm
eps = cdgm_h_laf3b.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

Dispersion formula

Sellmeier (C in µm²) (formula 2), λ in µm
n2−1=1.66486969λ2λ2−0.00895646712+0.30162248λ2λ2−0.0350299695+1.1973888λ2λ2−123.334438

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.66486969
C30.00895646712
C40.30162248
C50.0350299695
C61.1973888
C7123.334438

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -3.14e-06 1.29e-08 -3.08e-11 6.91e-07 5.97e-10 0.223
nd
1.744000
Vd
44.900027
glass code
744449
glass status
standard
density
value: 4390
thermal expansion
value: 8e-06, temperature range: 243 343; value: 9.7e-06, temperature range: 293 573
dPgF
-0.0041
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -6.83e-07 K⁻¹ at 633 nm, dn/dT = -1.55e-06 K⁻¹ at 1310 nm, dn/dT = -1.62e-06 K⁻¹ at 1550 nm

References

Cite

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com); See also CDGM optical glass data sheets; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 425 wavelengths, the same grid as the API and the library
H-LAF3B (CDGM), H-LAF3B: n and k versus wavelength
λ (µm)nk
0.3651.7868387.263800e-07
0.3666981.7861266.398702e-07
0.3684031.7854235.529580e-07
0.371.7847764.716000e-07
0.3701171.7847294.689187e-07
0.3718381.7840444.294439e-07
0.3735681.7833683.897855e-07
0.3753061.78273.499426e-07
0.3770511.782043.099143e-07
0.3788051.7813892.696999e-07
0.381.7809512.423000e-07
0.3805671.7807462.362959e-07
0.3823371.780112.175519e-07
0.3841161.7794831.987207e-07
0.3859021.7788631.798019e-07
0.3876971.7782511.607950e-07
0.38951.7776461.416998e-07
0.391.777481.364100e-07
0.3913121.7770491.299431e-07
0.3931321.7764591.209727e-07
0.3949611.7758761.119605e-07
0.3967981.77531.029063e-07
0.3986441.7747319.381012e-08
0.41.7743188.712500e-08
0.4004981.7741688.596076e-08
0.4023611.7736138.160403e-08
0.4042321.7730647.722703e-08
0.4061121.7725217.282967e-08
0.4080011.7719856.841186e-08
0.4098991.7714566.397350e-08
0.4118061.7709325.951450e-08
0.4137211.7704155.503475e-08
0.4156451.7699035.053417e-08
0.4175791.7693984.601265e-08
0.4195211.7688984.147011e-08
0.421.7687764.035000e-08
0.4214721.7684043.944992e-08
0.4234331.7679163.825153e-08
0.4254021.7674333.704756e-08
0.4273811.7669563.583798e-08
0.4293691.7664853.462279e-08
0.4313661.7660193.340194e-08
0.4333721.7655583.217541e-08
0.4353881.7651023.094318e-08
0.4374131.7646512.970521e-08
0.4394481.7642062.846149e-08
0.441.7640862.812400e-08
0.4414921.7637652.739482e-08
0.4435451.7633292.639116e-08
0.4456091.7628992.538283e-08
0.4476811.7624732.436981e-08
0.4497641.7620512.335208e-08
0.4518561.7616352.232961e-08
0.4539571.7612232.130239e-08
0.4560691.7608152.027040e-08
0.458191.7604121.923360e-08
0.461.7600731.834900e-08
0.4603211.7600141.823859e-08
0.4624621.7596191.750280e-08
0.4646131.7592291.676359e-08
0.4667751.7588441.602094e-08
0.4689461.7584621.527483e-08
0.4711271.7580851.452525e-08
0.4733181.7577111.377219e-08
0.475521.7573421.301563e-08
0.4777321.7569761.225554e-08
0.4799541.7566151.149192e-08
0.481.7566071.147600e-08
0.4821861.7562571.152836e-08
0.4844291.7559031.158207e-08
0.4866821.7555531.163604e-08
0.4889461.7552071.169025e-08
0.491221.7548641.174472e-08
0.4935051.7545251.179944e-08
0.49581.7541891.185442e-08
0.4981071.7538571.190965e-08
0.51.7535881.195500e-08
0.5004231.7535291.189085e-08
0.5027511.7532031.153817e-08
0.5050891.7528821.118384e-08
0.5074391.7525631.082787e-08
0.5097991.7522481.047024e-08
0.512171.7519361.011095e-08
0.5145531.7516279.749991e-09
0.5169461.7513229.387350e-09
0.519351.751029.023022e-09
0.5217661.750728.656999e-09
0.5241931.7504248.289275e-09
0.5266311.7501317.919839e-09
0.5290811.7498417.548686e-09
0.5315421.7495537.175806e-09
0.5340141.7492696.801191e-09
0.5364981.7489876.424834e-09
0.5389931.7487096.046727e-09
0.54151.7484335.666861e-09
0.5440191.7481595.285228e-09
0.5465491.7478894.901820e-09
0.5490921.7476214.516628e-09
0.551.7475264.379000e-09
0.5516461.7473564.549490e-09
0.5542121.7470944.815311e-09
0.5567891.7468345.082368e-09
0.5593791.7465765.350667e-09
0.5619811.7463225.620214e-09
0.5645951.7460695.891015e-09
0.5672211.7458196.163076e-09
0.5698591.7455726.436402e-09
0.572511.7453276.710999e-09
0.5751731.7450846.986874e-09
0.5778481.7448447.264032e-09
0.5805361.7446067.542479e-09
0.5832361.744377.822221e-09
0.5859491.7441378.103264e-09
0.5886751.7439068.385614e-09
0.5914131.7436778.669278e-09
0.5941641.743458.954261e-09
0.5969271.7432269.240570e-09
0.5997041.7430039.528210e-09
0.61.7429799.558900e-09
0.6024931.7427839.857189e-09
0.6052961.7425641.019247e-08
0.6081111.7423481.052932e-08
0.610941.7421341.086773e-08
0.6137811.7419211.120771e-08
0.6166361.7417111.154928e-08
0.6195041.7415031.189243e-08
0.6223861.7412961.223718e-08
0.6252811.7410921.258354e-08
0.6281891.7408891.293150e-08
0.6311111.7406891.328109e-08
0.6340471.740491.363230e-08
0.6369961.7402921.398514e-08
0.6399591.7400971.433962e-08
0.6429351.7399041.469576e-08
0.6459261.7397121.505355e-08
0.648931.7395221.541300e-08
0.651.7394551.554100e-08
0.6519491.7393331.558757e-08
0.6549811.7391471.566005e-08
0.6580281.7389621.573286e-08
0.6610881.7387781.580601e-08
0.6641631.7385961.587950e-08
0.6672521.7384161.595333e-08
0.6703561.7382381.602751e-08
0.6734741.7380611.610203e-08
0.6766071.7378851.617690e-08
0.6797541.7377111.625211e-08
0.6829151.7375391.632768e-08
0.6860921.7373681.640360e-08
0.6892831.7371981.647987e-08
0.6924891.737031.655649e-08
0.695711.7368641.663348e-08
0.6989461.7366991.671082e-08
0.71.7366451.673600e-08
0.7021971.7365351.692892e-08
0.7054631.7363731.721569e-08
0.7087451.7362111.750379e-08
0.7120411.7360521.779323e-08
0.7153531.7358931.808402e-08
0.7186811.7357361.837616e-08
0.7220231.7355811.866966e-08
0.7253821.7354261.896453e-08
0.7287561.7352731.926076e-08
0.7321461.7351211.955838e-08
0.7355511.734971.985738e-08
0.7389721.7348212.015776e-08
0.7424091.7346732.045955e-08
0.7458631.7345252.076274e-08
0.7493321.7343792.106734e-08
0.7528171.7342352.137336e-08
0.7563191.7340912.168080e-08
0.7598371.7339482.198967e-08
0.7633711.7338072.229998e-08
0.7669221.7336672.261173e-08
0.7704891.7335272.292493e-08
0.7740731.7333892.323959e-08
0.7776731.7332522.355571e-08
0.781291.7331162.387330e-08
0.7849241.7329812.419237e-08
0.7885751.7328472.451292e-08
0.7922431.7327142.483496e-08
0.7959281.7325822.515851e-08
0.799631.7324512.548355e-08
0.81.7324382.551600e-08
0.803351.7323212.471379e-08
0.8070861.7321922.381894e-08
0.810841.7320632.291993e-08
0.8146121.7319362.201673e-08
0.8184011.731812.110933e-08
0.8222081.7316842.019772e-08
0.8260321.7315591.928186e-08
0.8298741.7314361.836174e-08
0.8337341.7313131.743734e-08
0.8376121.7311911.650865e-08
0.8415081.7310691.557563e-08
0.8454221.7309491.463827e-08
0.8493551.7308291.369656e-08
0.851.730811.354200e-08
0.8533051.7307111.359462e-08
0.8572741.7305931.365781e-08
0.8612621.7304751.372129e-08
0.8652681.7303591.378506e-08
0.8692921.7302431.384913e-08
0.8733361.7301281.391350e-08
0.8773981.7300141.397817e-08
0.8814791.72991.404315e-08
0.8855791.7297881.410842e-08
0.8896981.7296751.417399e-08
0.8938361.7295641.423988e-08
0.8979941.7294531.430606e-08
0.91.72941.433800e-08
0.9021711.7293431.437260e-08
0.9063671.7292341.443949e-08
0.9105831.7291251.450669e-08
0.9148181.7290171.457420e-08
0.9190731.7289091.464203e-08
0.9233481.7288021.471017e-08
0.9276431.7286961.477863e-08
0.9319581.728591.484741e-08
0.9362931.7284851.491651e-08
0.9406481.728381.498593e-08
0.9450231.7282761.505567e-08
0.9494191.7281731.512573e-08
0.951.7281591.513500e-08
0.9538351.728071.519605e-08
0.9582711.7279671.526668e-08
0.9627291.7278651.533764e-08
0.9672071.7277641.540893e-08
0.9717051.7276631.548055e-08
0.9762251.7275631.555250e-08
0.9807661.7274631.562479e-08
0.9853281.7273631.569742e-08
0.9899111.7272641.577038e-08
0.9945151.7271661.584368e-08
0.9991411.7270681.591732e-08
11.7270491.593100e-08
1.003791.726971.599136e-08
1.008461.7268731.606575e-08
1.013151.7267761.614049e-08
1.017861.7266791.621558e-08
1.022591.7265831.629101e-08
1.027351.7264881.636680e-08
1.032131.7263931.644293e-08
1.036931.7262981.651943e-08
1.041751.7262031.659628e-08
1.04661.7261091.667348e-08
1.051471.7260151.675105e-08
1.056361.7259221.682897e-08
1.061.7258531.688700e-08
1.061271.7258291.690726e-08
1.066211.7257361.698593e-08
1.071171.7256431.706496e-08
1.076151.7255511.714435e-08
1.081151.7254591.722412e-08
1.086181.7253671.730426e-08
1.091241.7252761.738477e-08
1.096311.7251851.746565e-08
1.101411.7250941.754691e-08
1.106531.7250041.762855e-08
1.111681.7249131.771057e-08
1.116851.7248231.779297e-08
1.122051.7247331.787576e-08
1.127271.7246441.795892e-08
1.132511.7245541.804248e-08
1.137781.7244651.812642e-08
1.143071.7243761.821076e-08
1.148391.7242871.829549e-08
1.153731.7241981.838061e-08
1.159091.724111.846612e-08
1.164481.7240211.855204e-08
1.16991.7239331.863835e-08
1.175341.7238451.872507e-08
1.180811.7237571.881219e-08
1.18631.7236691.889971e-08
1.191821.7235811.898764e-08
1.197361.7234941.907598e-08
1.21.7234521.911800e-08
1.202931.7234061.949243e-08
1.208531.7233192.020680e-08
1.214151.7232312.092450e-08
1.21981.7231442.164553e-08
1.225471.7230572.236991e-08
1.231171.722972.309767e-08
1.23691.7228832.382881e-08
1.242651.7227962.456335e-08
1.248431.7227092.530131e-08
1.254241.7226222.604270e-08
1.260071.7225352.678754e-08
1.265931.7224482.753585e-08
1.271821.7223612.828763e-08
1.277741.7222742.904291e-08
1.283681.7221872.980171e-08
1.289651.72213.056403e-08
1.295651.7220133.132990e-08
1.301671.7219263.209933e-08
1.307731.7218393.287234e-08
1.313811.7217523.364895e-08
1.319921.7216643.442917e-08
1.326061.7215773.521302e-08
1.332231.721493.600051e-08
1.338431.7214023.679167e-08
1.344651.7213153.758650e-08
1.350911.7212273.838504e-08
1.357191.7211393.918728e-08
1.36351.7210513.999326e-08
1.369851.7209634.080299e-08
1.376221.7208754.161648e-08
1.382621.7207874.243376e-08
1.389051.7206994.325484e-08
1.395511.720614.407974e-08
1.41.7205494.465300e-08
1.4021.7205214.497287e-08
1.408521.7204324.601531e-08
1.415071.7203434.706260e-08
1.421661.7202544.811476e-08
1.428271.7201654.917182e-08
1.434911.7200755.023379e-08
1.441591.7199855.130070e-08
1.448291.7198955.237258e-08
1.455031.7198045.344944e-08
1.46181.7197145.453130e-08
1.468591.7196235.561821e-08
1.475431.7195325.671016e-08
1.482291.719445.780720e-08
1.489181.7193495.890934e-08
1.496111.7192576.001660e-08
1.503071.7191646.112902e-08
1.510061.7190726.224661e-08
1.517081.7189796.336939e-08
1.524141.7188866.449740e-08
1.531231.7187926.563066e-08
1.538351.7186986.676919e-08
1.545511.7186046.791301e-08
1.55271.718516.906215e-08
1.559921.7184157.021664e-08
1.567171.7183197.137650e-08
1.574461.7182247.254176e-08
1.581791.7181277.371243e-08
1.589141.7180317.488855e-08
1.596541.7179347.607014e-08
1.61.7178897.662400e-08
1.603961.7178378.083787e-08
1.611421.7177398.877426e-08
1.618921.7176419.674756e-08
1.626451.7175421.047580e-07
1.634011.7174431.128056e-07
1.641611.7173431.208907e-07
1.649251.7172431.290134e-07
1.656921.7171431.371738e-07
1.664631.7170421.453723e-07
1.672371.716941.536088e-07
1.680151.7168381.618837e-07
1.687961.7167361.701970e-07
1.695811.7166321.785491e-07
1.70371.7165291.869399e-07
1.711631.7164251.953699e-07
1.719591.716322.038390e-07
1.727591.7162142.123475e-07
1.735621.7161082.208956e-07
1.743691.7160022.294834e-07
1.751811.7158952.381112e-07
1.759951.7157872.467791e-07
1.768141.7156782.554873e-07
1.776361.7155692.642361e-07
1.784631.715462.730255e-07
1.792931.7153492.818558e-07
1.81.7152552.893800e-07
1.801271.7152382.958415e-07
1.809641.7151263.385883e-07
1.818061.7150143.815340e-07
1.826521.7149014.246794e-07
1.835011.7147874.680256e-07
1.843551.7146725.115733e-07
1.852121.7145575.553236e-07
1.860741.7144415.992774e-07
1.869391.7143246.434356e-07
1.878091.7142076.877992e-07
1.886821.7140887.323692e-07
1.89561.7139697.771465e-07
1.904421.7138498.221320e-07
1.913281.7137288.673268e-07
1.922181.7136069.127319e-07
1.931121.7134849.583481e-07
1.94011.713361.004176e-06
1.949121.7132361.050218e-06
1.958191.7131111.096474e-06
1.96731.7129851.142945e-06
1.976451.7128581.189632e-06
1.985641.712731.236536e-06
1.994881.7126011.283658e-06
21.712531.309800e-06
2.004161.7124711.314898e-06
2.013481.7123411.326336e-06
2.022841.7122091.337828e-06
2.032251.7120761.349372e-06
2.04171.7119421.360971e-06
2.05121.7118081.372623e-06
2.060741.7116721.384330e-06
2.070331.7115351.396091e-06
2.079961.7113971.407906e-06
2.089631.7112581.419777e-06
2.099351.7111181.431703e-06
2.109121.7109771.443684e-06
2.118931.7108351.455722e-06
2.128781.7106911.467815e-06
2.138681.7105471.479964e-06
2.148631.7104011.492170e-06
2.158621.7102541.504432e-06
2.168671.7101061.516752e-06
2.178751.7099561.529129e-06
2.188891.7098061.541564e-06
2.199071.7096541.554056e-06
2.21.709641.555200e-06
2.20931.7095011.665602e-06
2.219571.7093471.787642e-06
2.22991.7091911.910250e-06
2.240271.7090342.033427e-06
2.250691.7088762.157178e-06
2.261161.7087162.281504e-06
2.271671.7085552.406409e-06
2.282241.7083922.531894e-06
2.292861.7082292.657963e-06
2.303521.7080632.784619e-06
2.314241.7078972.911863e-06
2.3251.7077293.039700e-06

Optical transmission calculator

Free-standing sample in vacuum, normal incidence
Method
Transmittance T
—
Reflectance R
—

Fresnel reflection calculator

Direction
Rp
—
Rs
—
R = (Rp+Rs)/2
—
Phase φp
—
Phase φs
—
Brewster angle θB
—
Critical angle θC
—