Optical constants

Refractive index of H-LAFL5 (CDGM)

H-LAFL5: 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
1.75367
Extinction coefficient k
2.56224e-08
Permittivity ε1
3.07534
Permittivity ε2
8.98662e-08
Absorption coefficient α
0.00547958 cm⁻¹
Penetration depth δ = λ/(2πk)
3.64991e+09 nm
Abbe number Vd
37.492
Chromatic dispersion dn/dλ
-0.102045 µm⁻¹
Group index ng
1.81363
Group velocity dispersion
196.692 fs²/mm
Dispersion parameter D
-1073.06 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-LAFL5 (CDGM): H-LAFL5
cdgm_h_lafl5 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAFL5", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_lafl5.range_nm)  # (365, 2325) nm
eps = cdgm_h_lafl5.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=1.26562517λ2λ2−102.654797+1.8132477λ2λ2−0.011161487+0.173525791λ2λ2−0.0541388764

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.26562517
C3102.654797
C41.8132477
C50.011161487
C60.173525791
C70.0541388764

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -2.04e-07 2.8e-08 -1.11e-10 6.56e-07 -8.41e-10 0.272
nd
1.753670
Vd
37.491665
glass code
754375
density
value: 3710
thermal expansion
value: 7e-06, temperature range: 243 343; value: 8.4e-06, temperature range: 293 573
dPgF
0.0001
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.06e-06 K⁻¹ at 633 nm, dn/dT = 1.12e-07 K⁻¹ at 1310 nm, dn/dT = 4.44e-08 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-LAFL5 (CDGM), H-LAFL5: n and k versus wavelength
λ (µm)nk
0.3651.8082372.627550e-06
0.3666981.8072622.246086e-06
0.3684031.8063041.862847e-06
0.371.8054241.504100e-06
0.3701171.805361.495754e-06
0.3718381.8044311.372879e-06
0.3735681.8035161.249433e-06
0.3753061.8026151.125413e-06
0.3770511.8017281.000815e-06
0.3788051.8008558.756387e-07
0.381.8002697.903500e-07
0.3805671.7999947.741352e-07
0.3823371.7991467.235145e-07
0.3841161.7983116.726582e-07
0.3859021.7974886.215655e-07
0.3876971.7966785.702350e-07
0.38951.7958785.186658e-07
0.391.795665.043800e-07
0.3913121.7950914.849971e-07
0.3931321.7943144.581103e-07
0.3949611.7935494.310984e-07
0.3967981.7927954.039608e-07
0.3986441.7920513.766970e-07
0.41.7915133.566600e-07
0.4004981.7913173.531960e-07
0.4023611.7905943.402334e-07
0.4042321.789883.272105e-07
0.4061121.7891773.141270e-07
0.4080011.7884823.009827e-07
0.4098991.7877982.877772e-07
0.4118061.7871222.745103e-07
0.4137211.7864562.611816e-07
0.4156451.7857982.477910e-07
0.4175791.7851492.343381e-07
0.4195211.7845092.208227e-07
0.421.7843532.174900e-07
0.4214721.7838772.130772e-07
0.4234331.7832532.072019e-07
0.4254021.7826382.012992e-07
0.4273811.782031.953691e-07
0.4293691.781431.894114e-07
0.4313661.7808381.834260e-07
0.4333721.7802531.774127e-07
0.4353881.7796761.713715e-07
0.4374131.7791061.653022e-07
0.4394481.7785431.592046e-07
0.441.7783921.575500e-07
0.4414921.7779871.552427e-07
0.4435451.7774381.520669e-07
0.4456091.7768961.488764e-07
0.4476811.7763611.456710e-07
0.4497641.7758321.424507e-07
0.4518561.7753091.392154e-07
0.4539571.7747931.359651e-07
0.4560691.7742831.326997e-07
0.458191.773781.294190e-07
0.461.7733561.266200e-07
0.4603211.7732821.262025e-07
0.4624621.772791.234201e-07
0.4646131.7723041.206248e-07
0.4667751.7718241.178165e-07
0.4689461.771351.149951e-07
0.4711271.7708811.121606e-07
0.4733181.7704171.093130e-07
0.475521.7699591.064520e-07
0.4777321.7695071.035778e-07
0.4799541.7690591.006902e-07
0.481.769051.006300e-07
0.4821861.7686179.753033e-08
0.4844291.768189.435026e-08
0.4866821.7677489.115539e-08
0.4889461.767328.794566e-08
0.491221.7668988.472101e-08
0.4935051.766488.148135e-08
0.49581.7660687.822663e-08
0.4981071.7656597.495676e-08
0.51.7653297.227200e-08
0.5004231.7652567.192037e-08
0.5027511.7648566.998717e-08
0.5050891.7644626.804499e-08
0.5074391.7640716.609377e-08
0.5097991.7636856.413347e-08
0.512171.7633036.216406e-08
0.5145531.7629266.018549e-08
0.5169461.7625525.819771e-08
0.519351.7621835.620069e-08
0.5217661.7618185.419438e-08
0.5241931.7614565.217873e-08
0.5266311.7610995.015372e-08
0.5290811.7607454.811928e-08
0.5315421.7603954.607538e-08
0.5340141.7600494.402197e-08
0.5364981.7597064.195901e-08
0.5389931.7593673.988646e-08
0.54151.7590323.780427e-08
0.5440191.75873.571239e-08
0.5465491.7583723.361078e-08
0.5490921.7580473.149939e-08
0.551.7579323.074500e-08
0.5516461.7577263.052079e-08
0.5542121.7574083.017121e-08
0.5567891.7570932.982001e-08
0.5593791.7567812.946718e-08
0.5619811.7564732.911270e-08
0.5645951.7561682.875657e-08
0.5672211.7558662.839879e-08
0.5698591.7555672.803935e-08
0.572511.7552712.767823e-08
0.5751731.7549782.731543e-08
0.5778481.7546882.695094e-08
0.5805361.7544012.658476e-08
0.5832361.7541172.621688e-08
0.5859491.7538352.584728e-08
0.5886751.7535572.547597e-08
0.5914131.7532812.510293e-08
0.5941641.7530082.472815e-08
0.5969271.7527382.435163e-08
0.5997041.752472.397336e-08
0.61.7524422.393300e-08
0.6024931.7522052.377339e-08
0.6052961.7519422.359398e-08
0.6081111.7516822.341373e-08
0.610941.7514252.323265e-08
0.6137811.751172.305073e-08
0.6166361.7509172.286796e-08
0.6195041.7506672.268434e-08
0.6223861.750422.249986e-08
0.6252811.7501742.231453e-08
0.6281891.7499312.212833e-08
0.6311111.7496912.194127e-08
0.6340471.7494522.175334e-08
0.6369961.7492162.156454e-08
0.6399591.7489822.137485e-08
0.6429351.748752.118429e-08
0.6459261.7485212.099283e-08
0.648931.7482932.080049e-08
0.651.7482132.073200e-08
0.6519491.7480682.057627e-08
0.6549811.7478442.033392e-08
0.6580281.7476232.009044e-08
0.6610881.7474041.984583e-08
0.6641631.7471861.960008e-08
0.6672521.7469711.935319e-08
0.6703561.7467581.910515e-08
0.6734741.7465461.885595e-08
0.6766071.7463361.860560e-08
0.6797541.7461291.835408e-08
0.6829151.7459231.810139e-08
0.6860921.7457191.784753e-08
0.6892831.7455161.759249e-08
0.6924891.7453161.733626e-08
0.695711.7451171.707884e-08
0.6989461.744921.682022e-08
0.71.7448561.673600e-08
0.7021971.7447241.664831e-08
0.7054631.7445311.651795e-08
0.7087451.7443391.638700e-08
0.7120411.7441481.625543e-08
0.7153531.7439591.612325e-08
0.7186811.7437721.599045e-08
0.7220231.7435861.585704e-08
0.7253821.7434021.572301e-08
0.7287561.743221.558835e-08
0.7321461.7430391.545307e-08
0.7355511.7428591.531716e-08
0.7389721.7426811.518062e-08
0.7424091.7425041.504344e-08
0.7458631.7423291.490562e-08
0.7493321.7421551.476716e-08
0.7528171.7419831.462806e-08
0.7563191.7418111.448831e-08
0.7598371.7416421.434791e-08
0.7633711.7414731.420686e-08
0.7669221.7413061.406515e-08
0.7704891.741141.392279e-08
0.7740731.7409761.377976e-08
0.7776731.7408121.363606e-08
0.781291.740651.349170e-08
0.7849241.740491.334666e-08
0.7885751.740331.320096e-08
0.7922431.7401721.305457e-08
0.7959281.7400141.290750e-08
0.799631.7398581.275975e-08
0.81.7398431.274500e-08
0.803351.7397031.279840e-08
0.8070861.7395491.285796e-08
0.810841.7393971.291780e-08
0.8146121.7392451.297791e-08
0.8184011.7390951.303831e-08
0.8222081.7389451.309899e-08
0.8260321.7387971.315995e-08
0.8298741.7386491.322119e-08
0.8337341.7385031.328272e-08
0.8376121.7383571.334454e-08
0.8415081.7382131.340664e-08
0.8454221.738071.346903e-08
0.8493551.7379271.353171e-08
0.851.7379041.354200e-08
0.8533051.7377861.359462e-08
0.8572741.7376451.365781e-08
0.8612621.7375051.372129e-08
0.8652681.7373661.378506e-08
0.8692921.7372291.384913e-08
0.8733361.7370911.391350e-08
0.8773981.7369551.397817e-08
0.8814791.736821.404315e-08
0.8855791.7366851.410842e-08
0.8896981.7365521.417399e-08
0.8938361.7364191.423988e-08
0.8979941.7362871.430606e-08
0.91.7362231.433800e-08
0.9021711.7361551.437260e-08
0.9063671.7360251.443949e-08
0.9105831.7358951.450669e-08
0.9148181.7357661.457420e-08
0.9190731.7356371.464203e-08
0.9233481.735511.471017e-08
0.9276431.7353831.477863e-08
0.9319581.7352561.484741e-08
0.9362931.7351311.491651e-08
0.9406481.7350061.498593e-08
0.9450231.7348811.505567e-08
0.9494191.7347581.512573e-08
0.951.7347411.513500e-08
0.9538351.7346341.519605e-08
0.9582711.7345121.526668e-08
0.9627291.734391.533764e-08
0.9672071.7342691.540893e-08
0.9717051.7341481.548055e-08
0.9762251.7340281.555250e-08
0.9807661.7339081.562479e-08
0.9853281.7337891.569742e-08
0.9899111.7336711.577038e-08
0.9945151.7335531.584368e-08
0.9991411.7334351.591732e-08
11.7334141.593100e-08
1.003791.7333181.599136e-08
1.008461.7332021.606575e-08
1.013151.7330861.614049e-08
1.017861.732971.621558e-08
1.022591.7328551.629101e-08
1.027351.732741.636680e-08
1.032131.7326261.644293e-08
1.036931.7325121.651943e-08
1.041751.7323981.659628e-08
1.04661.7322851.667348e-08
1.051471.7321731.675105e-08
1.056361.732061.682897e-08
1.061.7319771.688700e-08
1.061271.7319481.690726e-08
1.066211.7318371.698593e-08
1.071171.7317251.706496e-08
1.076151.7316141.714435e-08
1.081151.7315041.722412e-08
1.086181.7313931.730426e-08
1.091241.7312831.738477e-08
1.096311.7311731.746565e-08
1.101411.7310641.754691e-08
1.106531.7309551.762855e-08
1.111681.7308461.771057e-08
1.116851.7307371.779297e-08
1.122051.7306291.787576e-08
1.127271.730521.795892e-08
1.132511.7304121.804248e-08
1.137781.7303041.812642e-08
1.143071.7301971.821076e-08
1.148391.7300891.829549e-08
1.153731.7299821.838061e-08
1.159091.7298751.846612e-08
1.164481.7297681.855204e-08
1.16991.7296611.863835e-08
1.175341.7295541.872507e-08
1.180811.7294471.881219e-08
1.18631.7293411.889971e-08
1.191821.7292351.898764e-08
1.197361.7291281.907598e-08
1.21.7290781.911800e-08
1.202931.7290221.916472e-08
1.208531.7289161.925385e-08
1.214151.728811.934340e-08
1.21981.7287041.943336e-08
1.225471.7285981.952374e-08
1.231171.7284921.961454e-08
1.23691.7283861.970577e-08
1.242651.728281.979742e-08
1.248431.7281741.988949e-08
1.254241.7280681.998199e-08
1.260071.7279622.007493e-08
1.265931.7278562.016829e-08
1.271821.727752.026209e-08
1.277741.7276442.035633e-08
1.283681.7275382.045101e-08
1.289651.7274312.054612e-08
1.295651.7273252.064168e-08
1.301671.7272192.073768e-08
1.307731.7271122.083413e-08
1.313811.7270062.093103e-08
1.319921.7268992.102837e-08
1.326061.7267922.112617e-08
1.332231.7266852.122443e-08
1.338431.7265782.132314e-08
1.344651.7264712.142231e-08
1.350911.7263632.152195e-08
1.357191.7262562.162204e-08
1.36351.7261482.172260e-08
1.369851.726042.182363e-08
1.376221.7259312.192513e-08
1.382621.7258232.202711e-08
1.389051.7257142.212955e-08
1.395511.7256052.223247e-08
1.41.725532.230400e-08
1.4021.7254962.233588e-08
1.408521.7253872.243976e-08
1.415071.7252772.254412e-08
1.421661.7251672.264897e-08
1.428271.7250562.275431e-08
1.434911.7249462.286014e-08
1.441591.7248352.296646e-08
1.448291.7247242.307328e-08
1.455031.7246122.318059e-08
1.46181.72452.328840e-08
1.468591.7243882.339671e-08
1.475431.7242752.350553e-08
1.482291.7241622.361485e-08
1.489181.7240482.372468e-08
1.496111.7239342.383503e-08
1.503071.723822.394588e-08
1.510061.7237052.405725e-08
1.517081.723592.416914e-08
1.524141.7234752.428155e-08
1.531231.7233592.439448e-08
1.538351.7232422.450794e-08
1.545511.7231252.462193e-08
1.55271.7230082.473644e-08
1.559921.722892.485149e-08
1.567171.7227712.496707e-08
1.574461.7226522.508319e-08
1.581791.7225322.519985e-08
1.589141.7224122.531706e-08
1.596541.7222922.543481e-08
1.61.7222352.549000e-08
1.603961.722172.669249e-08
1.611421.7220482.895725e-08
1.618921.7219263.123255e-08
1.626451.7218033.351843e-08
1.634011.7216793.581494e-08
1.641611.7215553.812214e-08
1.649251.721434.044006e-08
1.656921.7213044.276877e-08
1.664631.7211784.510831e-08
1.672371.7210514.745873e-08
1.680151.7209234.982008e-08
1.687961.7207955.219242e-08
1.695811.7206665.457579e-08
1.70371.7205365.697025e-08
1.711631.7204055.937584e-08
1.719591.7202746.179263e-08
1.727591.7201426.422065e-08
1.735621.7200096.665997e-08
1.743691.7198756.911064e-08
1.751811.7197417.157270e-08
1.759951.7196057.404622e-08
1.768141.7194697.653124e-08
1.776361.7193327.902782e-08
1.784631.7191948.153601e-08
1.792931.7190558.405587e-08
1.81.7189378.620300e-08
1.801271.7189158.779603e-08
1.809641.7187759.833495e-08
1.818061.7186331.089229e-07
1.826521.718491.195601e-07
1.835011.7183471.302467e-07
1.843551.7182031.409831e-07
1.852121.7180571.517694e-07
1.860741.7179111.626059e-07
1.869391.7177631.734928e-07
1.878091.7176151.844303e-07
1.886821.7174651.954187e-07
1.89561.7173152.064582e-07
1.904421.7171632.175491e-07
1.913281.717012.286915e-07
1.922181.7168562.398858e-07
1.931121.7167012.511321e-07
1.94011.7165452.624308e-07
1.949121.7163882.737820e-07
1.958191.7162292.851860e-07
1.96731.7160692.966430e-07
1.976451.7159083.081534e-07
1.985641.7157463.197172e-07
1.994881.7155833.313349e-07
21.7154923.377800e-07
2.004161.7154183.555973e-07
2.013481.7152523.955709e-07
2.022841.7150854.357305e-07
2.032251.7149164.760768e-07
2.04171.7147475.166108e-07
2.05121.7145755.573334e-07
2.060741.7144035.982453e-07
2.070331.7142296.393476e-07
2.079961.7140536.806410e-07
2.089631.7138767.221265e-07
2.099351.7136987.638050e-07
2.109121.7135188.056773e-07
2.118931.7133378.477444e-07
2.128781.7131548.900071e-07
2.138681.712979.324665e-07
2.148631.7127849.751233e-07
2.158621.7125961.017979e-06
2.168671.7124071.061033e-06
2.178751.7122171.104288e-06
2.188891.7120251.147744e-06
2.199071.7118311.191402e-06
2.21.7118131.195400e-06
2.20931.7116351.316005e-06
2.219571.7114381.449323e-06
2.22991.7112391.583261e-06
2.240271.7110381.717822e-06
2.250691.7108351.853009e-06
2.261161.7106311.988824e-06
2.271671.7104252.125272e-06
2.282241.7102172.262354e-06
2.292861.7100072.400073e-06
2.303521.7097952.538433e-06
2.314241.7095812.677437e-06
2.3251.7093662.817088e-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
—