Optical constants

Refractive index of H-LAF6LA (CDGM)

H-LAF6LA: 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
1.757
Extinction coefficient k
1.40486e-08
Permittivity ε1
3.08704
Permittivity ε2
4.93668e-08
Absorption coefficient α
0.00300443 cm⁻¹
Penetration depth δ = λ/(2πk)
6.65683e+09 nm
Abbe number Vd
47.712
Chromatic dispersion dn/dλ
-0.0814832 µm⁻¹
Group index ng
1.80488
Group velocity dispersion
147.43 fs²/mm
Dispersion parameter D
-804.308 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-LAF6LA (CDGM): H-LAF6LA
cdgm_h_laf6la = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAF6LA", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_laf6la.range_nm)  # (365, 2325) nm
eps = cdgm_h_laf6la.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=1.12023521λ2λ2−0.00335766705+0.897573526λ2λ2−0.0227710735+1.3665486λ2λ2−92.0376324

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.12023521
C30.00335766705
C40.897573526
C50.0227710735
C61.3665486
C792.0376324

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 4.32e-06 1.59e-08 -1.31e-11 6.18e-07 3.24e-10 0.187
nd
1.757000
Vd
47.711817
glass code
757477
density
value: 4059
thermal expansion
value: 5.7e-06, temperature range: 243 343; value: 6.9e-06, temperature range: 293 573
dPgF
-0.0088
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 3.56e-06 K⁻¹ at 633 nm, dn/dT = 2.71e-06 K⁻¹ at 1310 nm, dn/dT = 2.64e-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-LAF6LA (CDGM), H-LAF6LA: n and k versus wavelength
λ (µm)nk
0.3651.7971746.084450e-07
0.3666981.796525.608048e-07
0.3684031.7958735.129431e-07
0.371.7952784.681400e-07
0.3701171.7952354.661565e-07
0.3718381.7946044.369540e-07
0.3735681.7939814.076158e-07
0.3753061.7933653.781411e-07
0.3770511.7927563.485293e-07
0.3788051.7921553.187797e-07
0.381.7917512.985100e-07
0.3805671.7915612.928473e-07
0.3823371.7909732.751689e-07
0.3841161.7903932.574082e-07
0.3859021.789822.395650e-07
0.3876971.7892532.216387e-07
0.38951.7886922.036291e-07
0.391.7885391.986400e-07
0.3913121.7881391.904969e-07
0.3931321.7875911.792012e-07
0.3949611.787051.678530e-07
0.3967981.7865151.564520e-07
0.3986441.7859871.449979e-07
0.41.7856041.365800e-07
0.4004981.7854641.352014e-07
0.4023611.7849471.300424e-07
0.4042321.7844371.248595e-07
0.4061121.7839321.196524e-07
0.4080011.7834321.144211e-07
0.4098991.7829391.091655e-07
0.4118061.7824511.038854e-07
0.4137211.7819689.858075e-08
0.4156451.7814919.325145e-08
0.4175791.7810198.789736e-08
0.4195211.7805528.251836e-08
0.421.7804388.119200e-08
0.4214721.7800917.937241e-08
0.4234331.7796357.694974e-08
0.4254021.7791837.451580e-08
0.4273811.7787377.207054e-08
0.4293691.7782956.961390e-08
0.4313661.7778596.714584e-08
0.4333721.7774276.466630e-08
0.4353881.7776.217523e-08
0.4374131.7765775.967257e-08
0.4394481.776165.715826e-08
0.441.7760475.647600e-08
0.4414921.7757465.528342e-08
0.4435451.7753375.364194e-08
0.4456091.7749335.199282e-08
0.4476811.7745335.033603e-08
0.4497641.7741374.867153e-08
0.4518561.7737454.699929e-08
0.4539571.7733584.531927e-08
0.4560691.7729744.363144e-08
0.458191.7725954.193576e-08
0.461.7722764.048900e-08
0.4603211.772224.033145e-08
0.4624621.7718483.928145e-08
0.4646131.7714813.822657e-08
0.4667751.7711173.716678e-08
0.4689461.7707573.610206e-08
0.4711271.7704013.503239e-08
0.4733181.7700493.395774e-08
0.475521.76973.287810e-08
0.4777321.7693553.179343e-08
0.4799541.7690143.070372e-08
0.481.7690073.068100e-08
0.4821861.7686762.994472e-08
0.4844291.7683412.918935e-08
0.4866821.768012.843045e-08
0.4889461.7676822.766803e-08
0.491221.7673582.690207e-08
0.4935051.7670372.613254e-08
0.49581.7667192.535943e-08
0.4981071.7664052.458272e-08
0.51.766152.394500e-08
0.5004231.7660932.385359e-08
0.5027511.7657852.335106e-08
0.5050891.765482.284618e-08
0.5074391.7651772.233896e-08
0.5097991.7648782.182938e-08
0.512171.7645822.131743e-08
0.5145531.7642892.080309e-08
0.5169461.7639982.028637e-08
0.519351.7637111.976724e-08
0.5217661.7634261.924570e-08
0.5241931.7631441.872173e-08
0.5266311.7628651.819532e-08
0.5290811.7625891.766647e-08
0.5315421.7623151.713515e-08
0.5340141.7620441.660137e-08
0.5364981.7617761.606510e-08
0.5389931.761511.552633e-08
0.54151.7612471.498507e-08
0.5440191.7609861.444128e-08
0.5465491.7607281.389496e-08
0.5490921.7604721.334611e-08
0.551.7603811.315000e-08
0.5516461.7602181.318933e-08
0.5542121.7599681.325066e-08
0.5567891.7597191.331227e-08
0.5593791.7594731.337416e-08
0.5619811.7592291.343635e-08
0.5645951.7589871.349882e-08
0.5672211.7587481.356159e-08
0.5698591.758511.362464e-08
0.572511.7582751.368799e-08
0.5751731.7580421.375164e-08
0.5778481.7578121.381558e-08
0.5805361.7575831.387981e-08
0.5832361.7573571.394435e-08
0.5859491.7571321.400919e-08
0.5886751.756911.407432e-08
0.5914131.7566891.413976e-08
0.5941641.7564711.420551e-08
0.5969271.7562551.427156e-08
0.5997041.756041.433792e-08
0.61.7560171.434500e-08
0.6024931.7558271.440464e-08
0.6052961.7556171.447167e-08
0.6081111.7554081.453902e-08
0.610941.7552011.460667e-08
0.6137811.7549961.467465e-08
0.6166361.7547921.474294e-08
0.6195041.7545911.481154e-08
0.6223861.7543911.488047e-08
0.6252811.7541931.494972e-08
0.6281891.7539961.501928e-08
0.6311111.7538011.508918e-08
0.6340471.7536081.515939e-08
0.6369961.7534171.522994e-08
0.6399591.7532271.530081e-08
0.6429351.7530391.537201e-08
0.6459261.7528521.544354e-08
0.648931.7526671.551541e-08
0.651.7526021.554100e-08
0.6519491.7524831.558757e-08
0.6549811.7523011.566005e-08
0.6580281.7521211.573286e-08
0.6610881.7519421.580601e-08
0.6641631.7517641.587950e-08
0.6672521.7515881.595333e-08
0.6703561.7514131.602751e-08
0.6734741.7512391.610203e-08
0.6766071.7510671.617690e-08
0.6797541.7508971.625211e-08
0.6829151.7507281.632768e-08
0.6860921.750561.640360e-08
0.6892831.7503931.647987e-08
0.6924891.7502281.655649e-08
0.695711.7500631.663348e-08
0.6989461.7499011.671082e-08
0.71.7498481.673600e-08
0.7021971.7497391.664831e-08
0.7054631.7495791.651795e-08
0.7087451.749421.638700e-08
0.7120411.7492621.625543e-08
0.7153531.7491051.612325e-08
0.7186811.7489491.599045e-08
0.7220231.7487951.585704e-08
0.7253821.7486411.572301e-08
0.7287561.7484891.558835e-08
0.7321461.7483381.545307e-08
0.7355511.7481881.531716e-08
0.7389721.7480391.518062e-08
0.7424091.7478911.504344e-08
0.7458631.7477441.490562e-08
0.7493321.7475981.476716e-08
0.7528171.7474531.462806e-08
0.7563191.7473091.448831e-08
0.7598371.7471661.434791e-08
0.7633711.7470241.420686e-08
0.7669221.7468831.406515e-08
0.7704891.7467431.392279e-08
0.7740731.7466041.377976e-08
0.7776731.7464661.363606e-08
0.781291.7463281.349170e-08
0.7849241.7461921.334666e-08
0.7885751.7460561.320096e-08
0.7922431.7459211.305457e-08
0.7959281.7457871.290750e-08
0.799631.7456541.275975e-08
0.81.7456411.274500e-08
0.803351.7455221.279840e-08
0.8070861.745391.285796e-08
0.810841.7452591.291780e-08
0.8146121.7451291.297791e-08
0.8184011.7451.303831e-08
0.8222081.7448711.309899e-08
0.8260321.7447441.315995e-08
0.8298741.7446171.322119e-08
0.8337341.744491.328272e-08
0.8376121.7443651.334454e-08
0.8415081.744241.340664e-08
0.8454221.7441151.346903e-08
0.8493551.7439921.353171e-08
0.851.7439711.354200e-08
0.8533051.7438691.359462e-08
0.8572741.7437461.365781e-08
0.8612621.7436241.372129e-08
0.8652681.7435031.378506e-08
0.8692921.7433831.384913e-08
0.8733361.7432631.391350e-08
0.8773981.7431431.397817e-08
0.8814791.7430241.404315e-08
0.8855791.7429061.410842e-08
0.8896981.7427881.417399e-08
0.8938361.7426711.423988e-08
0.8979941.7425541.430606e-08
0.91.7424991.433800e-08
0.9021711.7424381.437260e-08
0.9063671.7423231.443949e-08
0.9105831.7422071.450669e-08
0.9148181.7420931.457420e-08
0.9190731.7419781.464203e-08
0.9233481.7418641.471017e-08
0.9276431.7417511.477863e-08
0.9319581.7416381.484741e-08
0.9362931.7415251.491651e-08
0.9406481.7414131.498593e-08
0.9450231.7413021.505567e-08
0.9494191.741191.512573e-08
0.951.7411761.513500e-08
0.9538351.7410791.519605e-08
0.9582711.7409691.526668e-08
0.9627291.7408581.533764e-08
0.9672071.7407481.540893e-08
0.9717051.7406391.548055e-08
0.9762251.7405291.555250e-08
0.9807661.740421.562479e-08
0.9853281.7403121.569742e-08
0.9899111.7402031.577038e-08
0.9945151.7400951.584368e-08
0.9991411.7399871.591732e-08
11.7399681.593100e-08
1.003791.739881.599136e-08
1.008461.7397731.606575e-08
1.013151.7396651.614049e-08
1.017861.7395591.621558e-08
1.022591.7394521.629101e-08
1.027351.7393461.636680e-08
1.032131.7392391.644293e-08
1.036931.7391331.651943e-08
1.041751.7390271.659628e-08
1.04661.7389221.667348e-08
1.051471.7388161.675105e-08
1.056361.7387111.682897e-08
1.061.7386331.688700e-08
1.061271.7386061.690726e-08
1.066211.7385011.698593e-08
1.071171.7383961.706496e-08
1.076151.7382911.714435e-08
1.081151.7381861.722412e-08
1.086181.7380811.730426e-08
1.091241.7379771.738477e-08
1.096311.7378721.746565e-08
1.101411.7377681.754691e-08
1.106531.7376631.762855e-08
1.111681.7375591.771057e-08
1.116851.7374541.779297e-08
1.122051.737351.787576e-08
1.127271.7372461.795892e-08
1.132511.7371411.804248e-08
1.137781.7370371.812642e-08
1.143071.7369331.821076e-08
1.148391.7368281.829549e-08
1.153731.7367241.838061e-08
1.159091.736621.846612e-08
1.164481.7365151.855204e-08
1.16991.736411.863835e-08
1.175341.7363061.872507e-08
1.180811.7362011.881219e-08
1.18631.7360961.889971e-08
1.191821.7359911.898764e-08
1.197361.7358861.907598e-08
1.21.7358361.911800e-08
1.202931.7357811.916472e-08
1.208531.7356761.925385e-08
1.214151.735571.934340e-08
1.21981.7354651.943336e-08
1.225471.7353591.952374e-08
1.231171.7352531.961454e-08
1.23691.7351471.970577e-08
1.242651.735041.979742e-08
1.248431.7349341.988949e-08
1.254241.7348271.998199e-08
1.260071.734722.007493e-08
1.265931.7346132.016829e-08
1.271821.7345052.026209e-08
1.277741.7343982.035633e-08
1.283681.734292.045101e-08
1.289651.7341812.054612e-08
1.295651.7340732.064168e-08
1.301671.7339642.073768e-08
1.307731.7338552.083413e-08
1.313811.7337452.093103e-08
1.319921.7336362.102837e-08
1.326061.7335252.112617e-08
1.332231.7334152.122443e-08
1.338431.7333042.132314e-08
1.344651.7331932.142231e-08
1.350911.7330812.152195e-08
1.357191.7329692.162204e-08
1.36351.7328572.172260e-08
1.369851.7327442.182363e-08
1.376221.7326312.192513e-08
1.382621.7325172.202711e-08
1.389051.7324032.212955e-08
1.395511.7322882.223247e-08
1.41.7322092.230400e-08
1.4021.7321732.233588e-08
1.408521.7320582.243976e-08
1.415071.7319422.254412e-08
1.421661.7318252.264897e-08
1.428271.7317082.275431e-08
1.434911.731592.286014e-08
1.441591.7314722.296646e-08
1.448291.7313542.307328e-08
1.455031.7312352.318059e-08
1.46181.7311152.328840e-08
1.468591.7309942.339671e-08
1.475431.7308732.350553e-08
1.482291.7307522.361485e-08
1.489181.730632.372468e-08
1.496111.7305072.383503e-08
1.503071.7303832.394588e-08
1.510061.7302592.405725e-08
1.517081.7301352.416914e-08
1.524141.7300092.428155e-08
1.531231.7298832.439448e-08
1.538351.7297562.450794e-08
1.545511.7296292.462193e-08
1.55271.72952.473644e-08
1.559921.7293712.485149e-08
1.567171.7292412.496707e-08
1.574461.7291112.508319e-08
1.581791.7289792.519985e-08
1.589141.7288472.531706e-08
1.596541.7287142.543481e-08
1.61.7286522.549000e-08
1.603961.7285812.726384e-08
1.611421.7284463.060467e-08
1.618921.7283113.396105e-08
1.626451.7281743.733304e-08
1.634011.7280374.072071e-08
1.641611.7278994.412413e-08
1.649251.727764.754339e-08
1.656921.727625.097856e-08
1.664631.7274795.442970e-08
1.672371.7273385.789689e-08
1.680151.7271956.138021e-08
1.687961.7270516.487973e-08
1.695811.7269076.839553e-08
1.70371.7267617.192769e-08
1.711631.7266147.547627e-08
1.719591.7264667.904136e-08
1.727591.7263188.262303e-08
1.735621.7261688.622136e-08
1.743691.7260178.983642e-08
1.751811.7258659.346830e-08
1.759951.7257129.711708e-08
1.768141.7255571.007828e-07
1.776361.7254021.044656e-07
1.784631.7252451.081655e-07
1.792931.7250881.118827e-07
1.81.7249531.150500e-07
1.801271.7249291.179120e-07
1.809641.7247681.368456e-07
1.818061.7246071.558674e-07
1.826521.7244441.749776e-07
1.835011.724281.941767e-07
1.843551.7241152.134651e-07
1.852121.7239492.328432e-07
1.860741.7237812.523114e-07
1.869391.7236122.718702e-07
1.878091.7234412.915200e-07
1.886821.723273.112612e-07
1.89561.7230963.310942e-07
1.904421.7229223.510194e-07
1.913281.7227463.710374e-07
1.922181.7225683.911484e-07
1.931121.7223894.113530e-07
1.94011.7222094.316515e-07
1.949121.7220274.520445e-07
1.958191.7218434.725324e-07
1.96731.7216584.931155e-07
1.976451.7214725.137943e-07
1.985641.7212835.345694e-07
1.994881.7210945.554411e-07
21.7209885.670200e-07
2.004161.7209025.927540e-07
2.013481.7207096.504888e-07
2.022841.7205147.084921e-07
2.032251.7203187.667652e-07
2.04171.720128.253094e-07
2.05121.719928.841259e-07
2.060741.7197189.432160e-07
2.070331.7195151.002581e-06
2.079961.719311.062222e-06
2.089631.7191031.122140e-06
2.099351.7188941.182338e-06
2.109121.7186831.242815e-06
2.118931.718471.303573e-06
2.128781.7182561.364614e-06
2.138681.7180391.425939e-06
2.148631.717821.487549e-06
2.158621.71761.549446e-06
2.168671.7173771.611631e-06
2.178751.7171531.674105e-06
2.188891.7169261.736869e-06
2.199071.7166971.799926e-06
2.21.7166761.805700e-06
2.20931.7164662.104184e-06
2.219571.7162332.434131e-06
2.22991.7159982.765613e-06
2.240271.7157613.098637e-06
2.250691.7155213.433210e-06
2.261161.7152793.769339e-06
2.271671.7150344.107031e-06
2.282241.7147884.446294e-06
2.292861.7145394.787135e-06
2.303521.7142875.129561e-06
2.314241.7140345.473581e-06
2.3251.7137775.819200e-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
—