Optical constants

Refractive index of H-ZLAF66 (CDGM)

H-ZLAF66: 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
1.801
Extinction coefficient k
4.19440e-08
Permittivity ε1
3.24359
Permittivity ε2
1.51082e-07
Absorption coefficient α
0.00897012 cm⁻¹
Penetration depth δ = λ/(2πk)
2.22963e+09 nm
Abbe number Vd
34.967
Chromatic dispersion dn/dλ
-0.115962 µm⁻¹
Group index ng
1.86913
Group velocity dispersion
227.059 fs²/mm
Dispersion parameter D
-1238.73 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-ZLAF66 (CDGM): H-ZLAF66
cdgm_h_zlaf66 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZLAF66", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zlaf66.range_nm)  # (365, 2325) nm
eps = cdgm_h_zlaf66.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=0.233018785λ2λ2−0.0537435377+1.90660392λ2λ2−0.0114336559+1.37147086λ2λ2−110.630887

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.233018785
C30.0537435377
C41.90660392
C50.0114336559
C61.37147086
C7110.630887

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -1.89e-06 1.64e-08 -1.41e-10 8.7e-07 1.01e-09 0.245
nd
1.801000
Vd
34.966919
glass code
801350
density
value: 3890
thermal expansion
value: 7.9e-06, temperature range: 243 343; value: 9.3e-06, temperature range: 293 573
dPgF
0.0016
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 4.11e-07 K⁻¹ at 633 nm, dn/dT = -8.24e-07 K⁻¹ at 1310 nm, dn/dT = -9.12e-07 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-ZLAF66 (CDGM), H-ZLAF66: n and k versus wavelength
λ (µm)nk
0.3651.8640074.103950e-06
0.3666981.8628673.619060e-06
0.3684031.8617463.131914e-06
0.371.8607172.675900e-06
0.3701171.8606432.659195e-06
0.3718381.8595582.413256e-06
0.3735681.8584892.166174e-06
0.3753061.8574381.917942e-06
0.3770511.8564031.668555e-06
0.3788051.8553841.418009e-06
0.381.8547011.247300e-06
0.3805671.8543811.216947e-06
0.3823371.8533931.122190e-06
0.3841161.852421.026992e-06
0.3859021.8514619.313506e-07
0.3876971.8505178.352647e-07
0.38951.8495877.387318e-07
0.391.8493337.119900e-07
0.3913121.8486716.830206e-07
0.3931321.8477686.428360e-07
0.3949611.8468796.024644e-07
0.3967981.8460025.619051e-07
0.3986441.8451385.211571e-07
0.41.8445134.912100e-07
0.4004981.8442864.858298e-07
0.4023611.8434464.656961e-07
0.4042321.8426184.454688e-07
0.4061121.8418014.251474e-07
0.4080011.8409964.047315e-07
0.4098991.8402033.842206e-07
0.4118061.839423.636143e-07
0.4137211.8386483.429122e-07
0.4156451.8378863.221138e-07
0.4175791.8371353.012187e-07
0.4195211.8363942.802263e-07
0.421.8362132.750500e-07
0.4214721.8356622.696559e-07
0.4234331.8349412.624739e-07
0.4254021.8342292.552586e-07
0.4273811.8335262.480096e-07
0.4293691.8328332.407270e-07
0.4313661.8321492.334105e-07
0.4333721.8314732.260600e-07
0.4353881.8308072.186752e-07
0.4374131.8301492.112561e-07
0.4394481.8294992.038026e-07
0.441.8293252.017800e-07
0.4414921.8288581.981598e-07
0.4435451.8282251.931769e-07
0.4456091.82761.881709e-07
0.4476811.8269821.831415e-07
0.4497641.8263731.780888e-07
0.4518561.8257711.730126e-07
0.4539571.8251771.679127e-07
0.4560691.8245891.627892e-07
0.458191.824011.576418e-07
0.461.8235231.532500e-07
0.4603211.8234371.527838e-07
0.4624621.8228711.496771e-07
0.4646131.8223121.465559e-07
0.4667751.821761.434202e-07
0.4689461.8212151.402699e-07
0.4711271.8206761.371049e-07
0.4733181.8201431.339253e-07
0.475521.8196171.307308e-07
0.4777321.8190971.275215e-07
0.4799541.8185831.242972e-07
0.481.8185731.242300e-07
0.4821861.8180761.212162e-07
0.4844291.8175741.181243e-07
0.4866821.8170781.150180e-07
0.4889461.8165881.118972e-07
0.491221.8161041.087620e-07
0.4935051.8156251.056121e-07
0.49581.8151521.024476e-07
0.4981071.8146849.926835e-08
0.51.8143059.665800e-08
0.5004231.8142219.628696e-08
0.5027511.8137649.424707e-08
0.5050891.8133129.219769e-08
0.5074391.8128659.013877e-08
0.5097991.8124238.807028e-08
0.512171.8119878.599217e-08
0.5145531.8115558.390440e-08
0.5169461.8111278.180691e-08
0.519351.8107057.969966e-08
0.5217661.8102877.758262e-08
0.5241931.8098747.545573e-08
0.5266311.8094667.331894e-08
0.5290811.8090617.117222e-08
0.5315421.8086626.901551e-08
0.5340141.8082676.684877e-08
0.5364981.8078766.467195e-08
0.5389931.8074896.248500e-08
0.54151.8071066.028789e-08
0.5440191.8067285.808055e-08
0.5465491.8063535.586295e-08
0.5490921.8059835.363503e-08
0.551.8058525.283900e-08
0.5516461.8056165.236215e-08
0.5542121.8052545.161865e-08
0.5567891.8048955.087170e-08
0.5593791.804545.012128e-08
0.5619811.8041894.936737e-08
0.5645951.8038414.860995e-08
0.5672211.8034974.784900e-08
0.5698591.8031574.708452e-08
0.572511.802824.631648e-08
0.5751731.8024874.554487e-08
0.5778481.8021574.476967e-08
0.5805361.8018314.399086e-08
0.5832361.8015084.320843e-08
0.5859491.8011884.242236e-08
0.5886751.8008714.163264e-08
0.5914131.8005584.083924e-08
0.5941641.8002484.004215e-08
0.5969271.7999413.924136e-08
0.5997041.7996373.843684e-08
0.61.7996053.835100e-08
0.6024931.7993363.799088e-08
0.6052961.7990383.758611e-08
0.6081111.7987433.717945e-08
0.610941.7984513.677089e-08
0.6137811.7981623.636044e-08
0.6166361.7978763.594808e-08
0.6195041.7975923.553380e-08
0.6223861.7973123.511759e-08
0.6252811.7970343.469945e-08
0.6281891.7967583.427936e-08
0.6311111.7964863.385732e-08
0.6340471.7962163.343332e-08
0.6369961.7959493.300734e-08
0.6399591.7956843.257938e-08
0.6429351.7954223.214943e-08
0.6459261.7951623.171749e-08
0.648931.7949053.128353e-08
0.651.7948143.112900e-08
0.6519491.794653.100402e-08
0.6549811.7943973.080952e-08
0.6580281.7941473.061412e-08
0.6610881.79393.041780e-08
0.6641631.7936543.022058e-08
0.6672521.7934113.002243e-08
0.6703561.793172.982337e-08
0.6734741.7929322.962337e-08
0.6766071.7926952.942245e-08
0.6797541.7924612.922060e-08
0.6829151.7922292.901780e-08
0.6860921.7919992.881406e-08
0.6892831.7917712.860938e-08
0.6924891.7915452.840374e-08
0.695711.7913212.819714e-08
0.6989461.7910992.798959e-08
0.71.7910272.792200e-08
0.7021971.7908792.786913e-08
0.7054631.7906612.779055e-08
0.7087451.7904452.771160e-08
0.7120411.7902312.763228e-08
0.7153531.7900192.755260e-08
0.7186811.7898082.747254e-08
0.7220231.78962.739212e-08
0.7253821.7893932.731131e-08
0.7287561.7891882.723013e-08
0.7321461.7889842.714858e-08
0.7355511.7887832.706664e-08
0.7389721.7885832.698433e-08
0.7424091.7883852.690163e-08
0.7458631.7881882.681854e-08
0.7493321.7879942.673507e-08
0.7528171.78782.665122e-08
0.7563191.7876092.656697e-08
0.7598371.7874192.648233e-08
0.7633711.787232.639729e-08
0.7669221.7870432.631186e-08
0.7704891.7868582.622604e-08
0.7740731.7866742.613981e-08
0.7776731.7864912.605318e-08
0.781291.786312.596615e-08
0.7849241.7861312.587872e-08
0.7885751.7859522.579088e-08
0.7922431.7857762.570263e-08
0.7959281.78562.561396e-08
0.799631.7854262.552489e-08
0.81.7854092.551600e-08
0.803351.7852542.516809e-08
0.8070861.7850822.478000e-08
0.810841.7849122.439011e-08
0.8146121.7847432.399840e-08
0.8184011.7845762.360487e-08
0.8222081.7844092.320952e-08
0.8260321.7842442.281232e-08
0.8298741.784082.241327e-08
0.8337341.7839182.201237e-08
0.8376121.7837562.160960e-08
0.8415081.7835962.120496e-08
0.8454221.7834372.079844e-08
0.8493551.7832792.039003e-08
0.851.7832532.032300e-08
0.8533051.7831221.992736e-08
0.8572741.7829661.945227e-08
0.8612621.7828111.897497e-08
0.8652681.7826571.849545e-08
0.8692921.7825051.801370e-08
0.8733361.7823531.752971e-08
0.8773981.7822021.704347e-08
0.8814791.7820531.655497e-08
0.8855791.7819041.606419e-08
0.8896981.7817561.557113e-08
0.8938361.781611.507578e-08
0.8979941.7814641.457812e-08
0.91.7813941.433800e-08
0.9021711.7813191.437260e-08
0.9063671.7811751.443949e-08
0.9105831.7810321.450669e-08
0.9148181.780891.457420e-08
0.9190731.7807491.464203e-08
0.9233481.7806081.471017e-08
0.9276431.7804681.477863e-08
0.9319581.780331.484741e-08
0.9362931.7801921.491651e-08
0.9406481.7800541.498593e-08
0.9450231.7799181.505567e-08
0.9494191.7797821.512573e-08
0.951.7797651.513500e-08
0.9538351.7796471.519605e-08
0.9582711.7795131.526668e-08
0.9627291.779381.533764e-08
0.9672071.7792471.540893e-08
0.9717051.7791151.548055e-08
0.9762251.7789841.555250e-08
0.9807661.7788531.562479e-08
0.9853281.7787231.569742e-08
0.9899111.7785941.577038e-08
0.9945151.7784651.584368e-08
0.9991411.7783371.591732e-08
11.7783141.593100e-08
1.003791.778211.599136e-08
1.008461.7780831.606575e-08
1.013151.7779571.614049e-08
1.017861.7778311.621558e-08
1.022591.7777061.629101e-08
1.027351.7775811.636680e-08
1.032131.7774571.644293e-08
1.036931.7773341.651943e-08
1.041751.7772111.659628e-08
1.04661.7770881.667348e-08
1.051471.7769661.675105e-08
1.056361.7768451.682897e-08
1.061.7767551.688700e-08
1.061271.7767231.690726e-08
1.066211.7766031.698593e-08
1.071171.7764831.706496e-08
1.076151.7763631.714435e-08
1.081151.7762441.722412e-08
1.086181.7761251.730426e-08
1.091241.7760061.738477e-08
1.096311.7758881.746565e-08
1.101411.775771.754691e-08
1.106531.7756531.762855e-08
1.111681.7755361.771057e-08
1.116851.7754191.779297e-08
1.122051.7753031.787576e-08
1.127271.7751871.795892e-08
1.132511.7750711.804248e-08
1.137781.7749561.812642e-08
1.143071.774841.821076e-08
1.148391.7747251.829549e-08
1.153731.7746111.838061e-08
1.159091.7744971.846612e-08
1.164481.7743821.855204e-08
1.16991.7742681.863835e-08
1.175341.7741551.872507e-08
1.180811.7740411.881219e-08
1.18631.7739281.889971e-08
1.191821.7738151.898764e-08
1.197361.7737021.907598e-08
1.21.7736491.911800e-08
1.202931.7735891.916472e-08
1.208531.7734771.925385e-08
1.214151.7733641.934340e-08
1.21981.7732521.943336e-08
1.225471.773141.952374e-08
1.231171.7730281.961454e-08
1.23691.7729161.970577e-08
1.242651.7728041.979742e-08
1.248431.7726921.988949e-08
1.254241.772581.998199e-08
1.260071.7724692.007493e-08
1.265931.7723572.016829e-08
1.271821.7722462.026209e-08
1.277741.7721342.035633e-08
1.283681.7720222.045101e-08
1.289651.7719112.054612e-08
1.295651.7717992.064168e-08
1.301671.7716882.073768e-08
1.307731.7715762.083413e-08
1.313811.7714652.093103e-08
1.319921.7713532.102837e-08
1.326061.7712412.112617e-08
1.332231.771132.122443e-08
1.338431.7710182.132314e-08
1.344651.7709062.142231e-08
1.350911.7707942.152195e-08
1.357191.7706822.162204e-08
1.36351.7705692.172260e-08
1.369851.7704572.182363e-08
1.376221.7703442.192513e-08
1.382621.7702322.202711e-08
1.389051.7701192.212955e-08
1.395511.7700062.223247e-08
1.41.7699282.230400e-08
1.4021.7698932.233588e-08
1.408521.7697792.243976e-08
1.415071.7696662.254412e-08
1.421661.7695522.264897e-08
1.428271.7694382.275431e-08
1.434911.7693242.286014e-08
1.441591.7692092.296646e-08
1.448291.7690942.307328e-08
1.455031.7689792.318059e-08
1.46181.7688642.328840e-08
1.468591.7687482.339671e-08
1.475431.7686322.350553e-08
1.482291.7685162.361485e-08
1.489181.7683992.372468e-08
1.496111.7682822.383503e-08
1.503071.7681652.394588e-08
1.510061.7680482.405725e-08
1.517081.767932.416914e-08
1.524141.7678112.428155e-08
1.531231.7676922.439448e-08
1.538351.7675732.450794e-08
1.545511.7674542.462193e-08
1.55271.7673342.473644e-08
1.559921.7672132.485149e-08
1.567171.7670922.496707e-08
1.574461.7669712.508319e-08
1.581791.7668492.519985e-08
1.589141.7667272.531706e-08
1.596541.7666042.543481e-08
1.61.7665462.549000e-08
1.603961.766482.841022e-08
1.611421.7663573.391014e-08
1.618921.7662323.943564e-08
1.626451.7661074.498684e-08
1.634011.7659825.056387e-08
1.641611.7658565.616683e-08
1.649251.7657296.179585e-08
1.656921.7656026.745106e-08
1.664631.7654747.313257e-08
1.672371.7653457.884051e-08
1.680151.7652168.457500e-08
1.687961.7650869.033616e-08
1.695811.7649569.612412e-08
1.70371.7648251.019390e-07
1.711631.7646931.077809e-07
1.719591.764561.136500e-07
1.727591.7644271.195464e-07
1.735621.7642931.254702e-07
1.743691.7641581.314216e-07
1.751811.7640231.374007e-07
1.759951.7638871.434076e-07
1.768141.763751.494424e-07
1.776361.7636121.555052e-07
1.784631.7634731.615963e-07
1.792931.7633341.677157e-07
1.81.7632151.729300e-07
1.801271.7631941.745935e-07
1.809641.7630531.855983e-07
1.818061.7629111.966544e-07
1.826521.7627682.077619e-07
1.835011.7626242.189211e-07
1.843551.762482.301321e-07
1.852121.7623342.413953e-07
1.860741.7621882.527109e-07
1.869391.762042.640791e-07
1.878091.7618922.755002e-07
1.886821.7617422.869745e-07
1.89561.7615922.985021e-07
1.904421.761443.100833e-07
1.913281.7612883.217184e-07
1.922181.7611353.334076e-07
1.931121.760983.451512e-07
1.94011.7608243.569494e-07
1.949121.7606683.688024e-07
1.958191.760513.807106e-07
1.96731.7603513.926742e-07
1.976451.7601914.046935e-07
1.985641.7600294.167686e-07
1.994881.7598674.288999e-07
21.7597774.356300e-07
2.004161.7597034.533653e-07
2.013481.7595394.931548e-07
2.022841.7593735.331294e-07
2.032251.7592055.732899e-07
2.04171.7590376.136372e-07
2.05121.7588676.541722e-07
2.060741.7586966.948957e-07
2.070331.7585237.358086e-07
2.079961.7583497.769119e-07
2.089631.7581748.182063e-07
2.099351.7579988.596928e-07
2.109121.757829.013723e-07
2.118931.757649.432456e-07
2.128781.7574599.853137e-07
2.138681.7572771.027577e-06
2.148631.7570931.070038e-06
2.158621.7569081.112696e-06
2.168671.7567221.155552e-06
2.178751.7565331.198608e-06
2.188891.7563431.241863e-06
2.199071.7561521.285320e-06
2.21.7561341.289300e-06
2.20931.7559591.405540e-06
2.219571.7557641.534034e-06
2.22991.7555681.663124e-06
2.240271.755371.792816e-06
2.250691.7551711.923110e-06
2.261161.7549692.054011e-06
2.271671.7547662.185520e-06
2.282241.7545612.317641e-06
2.292861.7543552.450377e-06
2.303521.7541472.583730e-06
2.314241.7539362.717704e-06
2.3251.7537242.852300e-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
—