Optical constants

Refractive index of H-ZLAF75B (CDGM)

H-ZLAF75B: 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
1.90365
Extinction coefficient k
3.28468e-08
Permittivity ε1
3.6239
Permittivity ε2
1.25058e-07
Absorption coefficient α
0.0070246 cm⁻¹
Penetration depth δ = λ/(2πk)
2.84714e+09 nm
Abbe number Vd
31.418
Chromatic dispersion dn/dλ
-0.14517 µm⁻¹
Group index ng
1.98896
Group velocity dispersion
288.434 fs²/mm
Dispersion parameter D
-1573.56 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-ZLAF75B (CDGM): H-ZLAF75B
cdgm_h_zlaf75b = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZLAF75B", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zlaf75b.range_nm)  # (365, 2325) nm
eps = cdgm_h_zlaf75b.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=0.322804345λ2λ2−0.055262706+2.16371144λ2λ2−0.0124574436+1.59867722λ2λ2−108.245897

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.322804345
C30.055262706
C42.16371144
C50.0124574436
C61.59867722
C7108.245897

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -2.36e-06 1.27e-08 -2.37e-11 9.1e-07 1.21e-09 0.262
nd
1.903660
Vd
31.418411
glass code
904314
density
value: 4560
thermal expansion
value: 7e-06, temperature range: 243 343; value: 8.8e-06, temperature range: 293 573
dPgF
0.0021

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 2.61e-07 K⁻¹ at 633 nm, dn/dT = -1.20e-06 K⁻¹ at 1310 nm, dn/dT = -1.31e-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-ZLAF75B (CDGM), H-ZLAF75B: n and k versus wavelength
λ (µm)nk
0.3651.9840754.540000e-06
0.3666981.9825933.870515e-06
0.3684031.9811363.197916e-06
0.371.97982.568300e-06
0.3701171.9797032.552800e-06
0.3718381.9782942.324611e-06
0.3735681.9769092.095360e-06
0.3753061.9755461.865043e-06
0.3770511.9742061.633654e-06
0.3788051.9728871.401189e-06
0.381.9720041.242800e-06
0.3805671.9715891.213146e-06
0.3823371.9703121.120569e-06
0.3841161.9690551.027562e-06
0.3859021.9678179.341221e-07
0.3876971.9665998.402475e-07
0.38951.96547.459364e-07
0.391.9650727.198100e-07
0.3913121.9642196.864161e-07
0.3931321.9630566.400940e-07
0.3949611.961915.935564e-07
0.3967981.9607825.468024e-07
0.3986441.959674.998309e-07
0.41.9588674.653100e-07
0.4004981.9585754.601241e-07
0.4023611.9574964.407179e-07
0.4042321.9564334.212215e-07
0.4061121.9553854.016343e-07
0.4080011.9543523.819560e-07
0.4098991.9533343.621862e-07
0.4118061.9523313.423245e-07
0.4137211.9513423.223703e-07
0.4156451.9503663.023234e-07
0.4175791.9494052.821832e-07
0.4195211.9484572.619493e-07
0.421.9482252.569600e-07
0.4214721.9475212.507229e-07
0.4234331.9465992.424186e-07
0.4254021.945692.340757e-07
0.4273811.9447922.256940e-07
0.4293691.9439072.172733e-07
0.4313661.9430342.088134e-07
0.4333721.9421732.003142e-07
0.4353881.9413231.917755e-07
0.4374131.9404841.831970e-07
0.4394481.9396571.745786e-07
0.441.9394351.722400e-07
0.4414921.938841.685549e-07
0.4435451.9380341.634827e-07
0.4456091.9372381.583869e-07
0.4476811.9364531.532674e-07
0.4497641.9356781.481241e-07
0.4518561.9349131.429569e-07
0.4539571.9341571.377656e-07
0.4560691.9334111.325502e-07
0.458191.9326751.273105e-07
0.461.9320571.228400e-07
0.4603211.9319481.222945e-07
0.4624621.931231.186589e-07
0.4646131.9305211.150064e-07
0.4667751.929821.113369e-07
0.4689461.9291291.076503e-07
0.4711271.9284461.039466e-07
0.4733181.9277711.002257e-07
0.475521.9271059.648740e-08
0.4777321.9264479.273177e-08
0.4799541.9257968.895866e-08
0.481.9257838.888000e-08
0.4821861.9251548.662198e-08
0.4844291.9245198.430539e-08
0.4866821.9238928.197802e-08
0.4889461.9232727.963982e-08
0.491221.922667.729075e-08
0.4935051.9220557.493075e-08
0.49581.9214577.255978e-08
0.4981071.9208667.017777e-08
0.51.9203896.822200e-08
0.5004231.9202836.790466e-08
0.5027511.9197056.616000e-08
0.5050891.9191356.440723e-08
0.5074391.9185716.264631e-08
0.5097991.9180146.087720e-08
0.512171.9174635.909986e-08
0.5145531.9169195.731425e-08
0.5169461.916385.552033e-08
0.519351.9158485.371807e-08
0.5217661.9153225.190743e-08
0.5241931.9148025.008837e-08
0.5266311.9142874.826084e-08
0.5290811.9137794.642482e-08
0.5315421.9132764.458025e-08
0.5340141.9127794.272711e-08
0.5364981.9122874.086535e-08
0.5389931.9118013.899492e-08
0.54151.911323.711580e-08
0.5440191.9108443.522793e-08
0.5465491.9103743.333129e-08
0.5490921.9099083.142582e-08
0.551.9097443.074500e-08
0.5516461.9094483.083699e-08
0.5542121.9089933.098043e-08
0.5567891.9085433.112453e-08
0.5593791.9080973.126930e-08
0.5619811.9076563.141474e-08
0.5645951.907223.156086e-08
0.5672211.9067893.170766e-08
0.5698591.9063623.185514e-08
0.572511.905943.200331e-08
0.5751731.9055233.215217e-08
0.5778481.9051093.230172e-08
0.5805361.90473.245197e-08
0.5832361.9042963.260291e-08
0.5859491.9038953.275456e-08
0.5886751.9034993.290691e-08
0.5914131.9031073.305997e-08
0.5941641.9027193.321375e-08
0.5969271.9023343.336823e-08
0.5997041.9019543.352344e-08
0.61.9019143.354000e-08
0.6024931.9015783.341978e-08
0.6052961.9012063.328465e-08
0.6081111.9008373.314889e-08
0.610941.9004723.301250e-08
0.6137811.9001113.287547e-08
0.6166361.8997533.273781e-08
0.6195041.8993993.259950e-08
0.6223861.8990493.246056e-08
0.6252811.8987023.232096e-08
0.6281891.8983583.218072e-08
0.6311111.8980183.203983e-08
0.6340471.8976813.189828e-08
0.6369961.8973483.175607e-08
0.6399591.8970183.161320e-08
0.6429351.8966913.146966e-08
0.6459261.8963673.132546e-08
0.648931.8960463.118059e-08
0.651.8959333.112900e-08
0.6519491.8957293.122230e-08
0.6549811.8954143.136749e-08
0.6580281.8951033.151336e-08
0.6610881.8947953.165990e-08
0.6641631.8944893.180713e-08
0.6672521.8941863.195504e-08
0.6703561.8938873.210365e-08
0.6734741.893593.225294e-08
0.6766071.8932963.240292e-08
0.6797541.8930043.255361e-08
0.6829151.8927163.270499e-08
0.6860921.892433.285708e-08
0.6892831.8921463.300988e-08
0.6924891.8918663.316339e-08
0.695711.8915873.331761e-08
0.6989461.8913123.347255e-08
0.71.8912233.352300e-08
0.7021971.8910393.334706e-08
0.7054631.8907683.308554e-08
0.7087451.89053.282281e-08
0.7120411.8902343.255885e-08
0.7153531.8899713.229366e-08
0.7186811.889713.202724e-08
0.7220231.8894513.175958e-08
0.7253821.8891953.149068e-08
0.7287561.8889413.122052e-08
0.7321461.8886893.094911e-08
0.7355511.8884393.067643e-08
0.7389721.8881923.040249e-08
0.7424091.8879463.012727e-08
0.7458631.8877032.985078e-08
0.7493321.8874622.957299e-08
0.7528171.8872232.929392e-08
0.7563191.8869862.901355e-08
0.7598371.886752.873187e-08
0.7633711.8865172.844888e-08
0.7669221.8862862.816458e-08
0.7704891.8860572.787895e-08
0.7740731.885832.759200e-08
0.7776731.8856042.730371e-08
0.781291.8853812.701408e-08
0.7849241.8851592.672310e-08
0.7885751.8849392.643077e-08
0.7922431.8847212.613708e-08
0.7959281.8845042.584202e-08
0.799631.884292.554559e-08
0.81.8842682.551600e-08
0.803351.8840772.516809e-08
0.8070861.8838652.478000e-08
0.810841.8836562.439011e-08
0.8146121.8834482.399840e-08
0.8184011.8832412.360487e-08
0.8222081.8830362.320952e-08
0.8260321.8828332.281232e-08
0.8298741.8826322.241327e-08
0.8337341.8824312.201237e-08
0.8376121.8822332.160960e-08
0.8415081.8820362.120496e-08
0.8454221.881842.079844e-08
0.8493551.8816462.039003e-08
0.851.8816142.032300e-08
0.8533051.8814531.992736e-08
0.8572741.8812611.945227e-08
0.8612621.8810711.897497e-08
0.8652681.8808821.849545e-08
0.8692921.8806951.801370e-08
0.8733361.8805091.752971e-08
0.8773981.8803241.704347e-08
0.8814791.8801411.655497e-08
0.8855791.8799591.606419e-08
0.8896981.8797781.557113e-08
0.8938361.8795981.507578e-08
0.8979941.8794191.457812e-08
0.91.8793341.433800e-08
0.9021711.8792421.437260e-08
0.9063671.8790661.443949e-08
0.9105831.8788911.450669e-08
0.9148181.8787171.457420e-08
0.9190731.8785441.464203e-08
0.9233481.8783721.471017e-08
0.9276431.8782021.477863e-08
0.9319581.8780321.484741e-08
0.9362931.8778641.491651e-08
0.9406481.8776961.498593e-08
0.9450231.877531.505567e-08
0.9494191.8773641.512573e-08
0.951.8773421.513500e-08
0.9538351.87721.519605e-08
0.9582711.8770361.526668e-08
0.9627291.8768741.533764e-08
0.9672071.8767121.540893e-08
0.9717051.8765511.548055e-08
0.9762251.8763911.555250e-08
0.9807661.8762321.562479e-08
0.9853281.8760741.569742e-08
0.9899111.8759171.577038e-08
0.9945151.8757611.584368e-08
0.9991411.8756051.591732e-08
11.8755761.593100e-08
1.003791.875451.599136e-08
1.008461.8752961.606575e-08
1.013151.8751431.614049e-08
1.017861.874991.621558e-08
1.022591.8748391.629101e-08
1.027351.8746881.636680e-08
1.032131.8745371.644293e-08
1.036931.8743881.651943e-08
1.041751.8742391.659628e-08
1.04661.874091.667348e-08
1.051471.8739431.675105e-08
1.056361.8737961.682897e-08
1.061.8736871.688700e-08
1.061271.8736491.690726e-08
1.066211.8735041.698593e-08
1.071171.8733581.706496e-08
1.076151.8732141.714435e-08
1.081151.873071.722412e-08
1.086181.8729261.730426e-08
1.091241.8727841.738477e-08
1.096311.8726411.746565e-08
1.101411.8724991.754691e-08
1.106531.8723581.762855e-08
1.111681.8722171.771057e-08
1.116851.8720771.779297e-08
1.122051.8719371.787576e-08
1.127271.8717971.795892e-08
1.132511.8716581.804248e-08
1.137781.8715191.812642e-08
1.143071.8713811.821076e-08
1.148391.8712431.829549e-08
1.153731.8711061.838061e-08
1.159091.8709681.846612e-08
1.164481.8708321.855204e-08
1.16991.8706951.863835e-08
1.175341.8705591.872507e-08
1.180811.8704231.881219e-08
1.18631.8702881.889971e-08
1.191821.8701521.898764e-08
1.197361.8700171.907598e-08
1.21.8699531.911800e-08
1.202931.8698831.932849e-08
1.208531.8697481.973009e-08
1.214151.8696142.013356e-08
1.21981.869482.053890e-08
1.225471.8693462.094613e-08
1.231171.8692132.135525e-08
1.23691.8690792.176628e-08
1.242651.8689462.217921e-08
1.248431.8688132.259407e-08
1.254241.868682.301086e-08
1.260071.8685472.342958e-08
1.265931.8684142.385026e-08
1.271821.8682822.427289e-08
1.277741.8681492.469748e-08
1.283681.8680172.512405e-08
1.289651.8678842.555261e-08
1.295651.8677522.598316e-08
1.301671.867622.641571e-08
1.307731.8674882.685027e-08
1.313811.8673552.728686e-08
1.319921.8672232.772547e-08
1.326061.8670912.816613e-08
1.332231.8669592.860883e-08
1.338431.8668262.905360e-08
1.344651.8666942.950043e-08
1.350911.8665622.994934e-08
1.357191.8664293.040034e-08
1.36351.8662973.085344e-08
1.369851.8661643.130864e-08
1.376221.8660313.176596e-08
1.382621.8658993.222541e-08
1.389051.8657663.268700e-08
1.395511.8656333.315073e-08
1.41.865543.347300e-08
1.4021.8654993.364868e-08
1.408521.8653663.422120e-08
1.415071.8652323.479639e-08
1.421661.8650983.537426e-08
1.428271.8649643.595481e-08
1.434911.864833.653806e-08
1.441591.8646963.712403e-08
1.448291.8645613.771272e-08
1.455031.8644263.830415e-08
1.46181.8642913.889833e-08
1.468591.8641553.949527e-08
1.475431.8640194.009499e-08
1.482291.8638834.069750e-08
1.489181.8637464.130281e-08
1.496111.863614.191094e-08
1.503071.8634724.252190e-08
1.510061.8633354.313570e-08
1.517081.8631974.375235e-08
1.524141.8630594.437187e-08
1.531231.862924.499428e-08
1.538351.8627814.561957e-08
1.545511.8626414.624778e-08
1.55271.8625014.687891e-08
1.559921.8623614.751297e-08
1.567171.862224.814999e-08
1.574461.8620784.878996e-08
1.581791.8619364.943292e-08
1.589141.8617945.007886e-08
1.596541.8616515.072781e-08
1.61.8615845.103200e-08
1.603961.8615075.287254e-08
1.611421.8613635.633902e-08
1.618921.8612185.982161e-08
1.626451.8610736.332041e-08
1.634011.8609276.683547e-08
1.641611.8607817.036689e-08
1.649251.8606347.391473e-08
1.656921.8604867.747908e-08
1.664631.8603388.106001e-08
1.672371.8601898.465759e-08
1.680151.8600398.827190e-08
1.687961.8598889.190303e-08
1.695811.8597379.555104e-08
1.70371.8595859.921602e-08
1.711631.8594331.028981e-07
1.719591.8592791.065972e-07
1.727591.8591251.103136e-07
1.735621.858971.140472e-07
1.743691.8588141.177982e-07
1.751811.8586581.215667e-07
1.759951.85851.253527e-07
1.768141.8583421.291563e-07
1.776361.8581831.329776e-07
1.784631.8580231.368167e-07
1.792931.8578621.406736e-07
1.81.8577251.439600e-07
1.801271.85771.458069e-07
1.809641.8575371.580254e-07
1.818061.8573731.703007e-07
1.826521.8572091.826331e-07
1.835011.8570431.950228e-07
1.843551.8568762.074702e-07
1.852121.8567092.199755e-07
1.860741.856542.325390e-07
1.869391.856372.451609e-07
1.878091.8561992.578415e-07
1.886821.8560272.705811e-07
1.89561.8558542.833799e-07
1.904421.855682.962383e-07
1.913281.8555043.091564e-07
1.922181.8553283.221347e-07
1.931121.855153.351733e-07
1.94011.8549713.482726e-07
1.949121.8547913.614328e-07
1.958191.854613.746542e-07
1.96731.8544273.879372e-07
1.976451.8542434.012819e-07
1.985641.8540584.146886e-07
1.994881.8538714.281578e-07
21.8537684.356300e-07
2.004161.8536844.529747e-07
2.013481.8534944.918879e-07
2.022841.8533045.309822e-07
2.032251.8531125.702582e-07
2.04171.8529196.097170e-07
2.05121.8527246.493593e-07
2.060741.8525286.891860e-07
2.070331.852337.291979e-07
2.079961.8521317.693960e-07
2.089631.851938.097810e-07
2.099351.8517278.503538e-07
2.109121.8515248.911154e-07
2.118931.8513189.320666e-07
2.128781.8511119.732083e-07
2.138681.8509021.014541e-06
2.148631.8506921.056067e-06
2.158621.850481.097785e-06
2.168671.8502661.139697e-06
2.178751.8500511.181805e-06
2.188891.8498341.224108e-06
2.199071.8496151.266608e-06
2.21.8495951.270500e-06
2.20931.8493941.420704e-06
2.219571.8491711.586741e-06
2.22991.8489471.753551e-06
2.240271.8487211.921136e-06
2.250691.8484922.089501e-06
2.261161.8482622.258649e-06
2.271671.848032.428584e-06
2.282241.8477962.599309e-06
2.292861.847562.770828e-06
2.303521.8473222.943145e-06
2.314241.8470823.116264e-06
2.3251.8468393.290188e-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
—