Optical constants

Refractive index of H-ZF62GT (CDGM)

H-ZF62GT: n,k 0.4047–2.325 µm

Data
formula 2 + tabulated k
Range
0.4047–2.325 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.4047–2.325 µm
Refractive index n
1.92285
Extinction coefficient k
2.20158e-08
Permittivity ε1
3.69736
Permittivity ε2
8.46662e-08
Absorption coefficient α
0.00470828 cm⁻¹
Penetration depth δ = λ/(2πk)
4.24784e+09 nm
Abbe number Vd
20.88
Chromatic dispersion dn/dλ
-0.218883 µm⁻¹
Group index ng
2.05147
Group velocity dispersion
470.233 fs²/mm
Dispersion parameter D
-2565.37 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-ZF62GT (CDGM): H-ZF62GT
cdgm_h_zf62gt = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZF62GT", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zf62gt.range_nm)  # (404.7, 2325) nm
eps = cdgm_h_zf62gt.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=2.55246796λ2λ2−162.450683+0.465681607λ2λ2−0.069560081+2.0289468λ2λ2−0.014771138

Valid from 0.4047 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C22.55246796
C3162.450683
C40.465681607
C50.069560081
C62.0289468
C70.014771138

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -6.75e-06 1.69e-08 -4.1e-11 9.81e-07 1.32e-09 0.322
nd
1.922860
Vd
20.879915
glass code
923209
density
value: 4010
thermal expansion
value: 6.4e-06, temperature range: 243 343; value: 7.7e-06, temperature range: 293 573
dPgF
0.0298
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -2.40e-06 K⁻¹ at 633 nm, dn/dT = -4.11e-06 K⁻¹ at 1310 nm, dn/dT = -4.21e-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 421 wavelengths, the same grid as the API and the library
H-ZF62GT (CDGM), H-ZF62GT: n and k versus wavelength
λ (µm)nk
0.40472.0092219.867793e-07
0.4064772.0074469.045289e-07
0.4082622.0057028.219173e-07
0.4100552.0039877.389429e-07
0.4118562.0023026.556041e-07
0.4136642.0006465.718994e-07
0.4154811.9990174.878271e-07
0.4173051.9974164.033856e-07
0.4191381.9958413.185732e-07
0.421.9951112.786800e-07
0.4209791.9942912.725739e-07
0.4228271.9927672.610390e-07
0.4246841.9912682.494535e-07
0.4265491.9897932.378172e-07
0.4284221.9883412.261297e-07
0.4303041.9869122.143909e-07
0.4321931.9855052.026005e-07
0.4340911.984121.907584e-07
0.4359971.9827571.788642e-07
0.4379121.9814141.669179e-07
0.4398351.9800921.549191e-07
0.441.979981.538900e-07
0.4417671.978791.501458e-07
0.4437071.9775081.460340e-07
0.4456551.9762441.419042e-07
0.4476121.9751.377562e-07
0.4495781.9737731.335900e-07
0.4515521.9725651.294056e-07
0.4535351.9713741.252027e-07
0.4555271.97021.209814e-07
0.4575271.9690431.167416e-07
0.4595361.9679031.124831e-07
0.461.9676431.115000e-07
0.4615541.9667791.094386e-07
0.4635811.965671.067501e-07
0.4656171.9645771.040499e-07
0.4676611.96351.013378e-07
0.4697151.9624379.861380e-08
0.4717781.9613899.587783e-08
0.473851.9603559.312984e-08
0.475931.9593369.036979e-08
0.478021.958338.759762e-08
0.481.9573948.497200e-08
0.480121.9573378.489601e-08
0.4822281.9563588.355718e-08
0.4843461.9553928.221247e-08
0.4864731.9544398.086186e-08
0.4886091.9534997.950531e-08
0.4907551.952577.814281e-08
0.492911.9516547.677432e-08
0.4950741.950757.539983e-08
0.4972481.9498577.401930e-08
0.4994321.9489767.263270e-08
0.51.9487497.227200e-08
0.5016251.9481067.092224e-08
0.5038281.9472476.909270e-08
0.5060411.9463996.725512e-08
0.5082631.9455626.540948e-08
0.5104951.9447356.355573e-08
0.5127361.9439196.169384e-08
0.5149881.9431125.982377e-08
0.517251.9423165.794549e-08
0.5195211.9415295.605897e-08
0.5218021.9407535.416416e-08
0.5240941.9399855.226102e-08
0.5263951.9392275.034954e-08
0.5287071.9384784.842965e-08
0.5310291.9377384.650134e-08
0.5333611.9370074.456456e-08
0.5357031.9362854.261927e-08
0.5380551.9355714.066544e-08
0.5404181.9348663.870303e-08
0.5427911.9341693.673200e-08
0.5451751.9334813.475232e-08
0.5475691.93283.276394e-08
0.5499741.9321273.076683e-08
0.551.932123.074500e-08
0.5523891.9314623.019040e-08
0.5548151.9308052.962724e-08
0.5572511.9301552.906160e-08
0.5596981.9295132.849348e-08
0.5621561.9288782.792287e-08
0.5646251.9282512.734974e-08
0.5671041.927632.677411e-08
0.5695951.9270172.619594e-08
0.5720961.926412.561524e-08
0.5746081.925812.503198e-08
0.5771311.9252172.444617e-08
0.5796661.9246312.385778e-08
0.5822111.924052.326680e-08
0.5847681.9234772.267324e-08
0.5873361.922912.207706e-08
0.5899151.9223482.147827e-08
0.5925061.9217932.087685e-08
0.5951081.9212442.027278e-08
0.5977211.9207021.966607e-08
0.61.9202351.913700e-08
0.6003461.9201641.907624e-08
0.6029821.9196331.861319e-08
0.605631.9191071.814811e-08
0.608291.9185871.768098e-08
0.6109611.9180731.721181e-08
0.6136441.9175641.674057e-08
0.6163391.917061.626727e-08
0.6190451.9165621.579188e-08
0.6217641.9160691.531441e-08
0.6244941.9155811.483484e-08
0.6272371.9150981.435316e-08
0.6299911.914621.386937e-08
0.6327581.9141471.338346e-08
0.6355361.9136791.289541e-08
0.6383271.9132161.240522e-08
0.641131.9127571.191288e-08
0.6439461.9123031.141837e-08
0.6467741.9118541.092169e-08
0.6496141.911411.042283e-08
0.651.911351.035500e-08
0.6524671.9109691.039432e-08
0.6553321.9105341.043999e-08
0.658211.9101021.048586e-08
0.66111.9096751.053193e-08
0.6640031.9092521.057821e-08
0.6669191.9088341.062469e-08
0.6698481.9084191.067137e-08
0.6727891.9080091.071826e-08
0.6757441.9076031.076536e-08
0.6787111.90721.081266e-08
0.6816921.9068021.086017e-08
0.6846851.9064071.090788e-08
0.6876921.9060161.095581e-08
0.6907121.9056291.100395e-08
0.6937451.9052461.105230e-08
0.6967921.9048671.110086e-08
0.6998521.9044911.114963e-08
0.71.9044721.115200e-08
0.7029251.9041181.119859e-08
0.7060121.9037491.124777e-08
0.7091121.9033841.129716e-08
0.7122261.9030221.134676e-08
0.7153541.9026631.139658e-08
0.7184951.9023081.144663e-08
0.721651.9019561.149689e-08
0.7248191.9016071.154737e-08
0.7280021.9012621.159808e-08
0.7311991.900921.164900e-08
0.734411.9005811.170016e-08
0.7376351.9002451.175153e-08
0.7408751.8999121.180313e-08
0.7441281.8995821.185496e-08
0.7473961.8992551.190702e-08
0.7506781.898931.195930e-08
0.7539741.8986091.201181e-08
0.7572851.8982911.206456e-08
0.7606111.8979751.211753e-08
0.7639511.8976631.217074e-08
0.7673061.8973531.222418e-08
0.7706751.8970461.227786e-08
0.774061.8967411.233177e-08
0.7774591.8964391.238592e-08
0.7808731.896141.244031e-08
0.7843021.8958431.249493e-08
0.7877461.8955491.254980e-08
0.7912061.8952571.260491e-08
0.794681.8949681.266026e-08
0.798171.8946811.271585e-08
0.81.8945321.274500e-08
0.8016751.8943971.277170e-08
0.8051961.8941151.282782e-08
0.8087311.8938351.288418e-08
0.8122831.8935581.294079e-08
0.815851.8932831.299765e-08
0.8194331.893011.305476e-08
0.8230311.892741.311212e-08
0.8266451.8924721.316973e-08
0.8302761.8922051.322759e-08
0.8339221.8919411.328571e-08
0.8375841.891681.334408e-08
0.8412621.891421.340271e-08
0.8449561.8911621.346160e-08
0.8486671.8909071.352075e-08
0.851.8908151.354200e-08
0.8523931.8906531.358010e-08
0.8561371.8904011.363970e-08
0.8598961.8901511.369955e-08
0.8636721.8899041.375967e-08
0.8674651.8896581.382005e-08
0.8712751.8894141.388069e-08
0.8751011.8891721.394160e-08
0.8789441.8889311.400278e-08
0.8828031.8886931.406423e-08
0.886681.8884561.412595e-08
0.8905741.8882211.418794e-08
0.8944851.8879881.425020e-08
0.8984131.8877561.431273e-08
0.91.8876631.433800e-08
0.9023581.8875261.437559e-08
0.9063211.8872981.443875e-08
0.9103011.8870711.450219e-08
0.9142981.8868471.456591e-08
0.9183131.8866231.462991e-08
0.9223461.8864011.469419e-08
0.9263961.8861811.475876e-08
0.9304641.8859621.482360e-08
0.934551.8857451.488873e-08
0.9386541.8855291.495415e-08
0.9427761.8853151.501986e-08
0.9469161.8851021.508585e-08
0.951.8849451.513500e-08
0.9510751.8848911.515211e-08
0.9552511.8846811.521860e-08
0.9594461.8844721.528538e-08
0.963661.8842651.535246e-08
0.9678911.8840591.541983e-08
0.9721421.8838541.548750e-08
0.9764111.8836511.555546e-08
0.9806991.8834491.562372e-08
0.9850051.8832481.569228e-08
0.9893311.8830491.576115e-08
0.9936751.882851.583031e-08
0.9980391.8826531.589978e-08
11.8825651.593100e-08
1.002421.8824571.596959e-08
1.006821.8822631.603972e-08
1.011251.8820691.611017e-08
1.015691.8818771.618093e-08
1.020151.8816851.625199e-08
1.024631.8814951.632337e-08
1.029131.8813061.639507e-08
1.033641.8811181.646707e-08
1.038181.8809311.653940e-08
1.042741.8807441.661204e-08
1.047321.8805591.668500e-08
1.051921.8803751.675828e-08
1.056541.8801921.683188e-08
1.061.8800561.688700e-08
1.061181.880011.690581e-08
1.065841.8798291.698007e-08
1.070521.8796491.705466e-08
1.075221.8794691.712957e-08
1.079941.8792911.720482e-08
1.084691.8791131.728039e-08
1.089451.8789361.735630e-08
1.094231.878761.743254e-08
1.099041.8785851.750911e-08
1.103871.8784111.758602e-08
1.108711.8782381.766327e-08
1.113581.8780651.774086e-08
1.118471.8778931.781879e-08
1.123381.8777221.789706e-08
1.128321.8775511.797567e-08
1.133271.8773821.805463e-08
1.138251.8772131.813394e-08
1.143251.8770441.821359e-08
1.148271.8768771.829360e-08
1.153311.8767091.837395e-08
1.158371.8765431.845466e-08
1.163461.8763771.853572e-08
1.168571.8762121.861714e-08
1.17371.8760481.869892e-08
1.178861.8758841.878106e-08
1.184031.875721.886355e-08
1.189231.8755571.894641e-08
1.194451.8753951.902963e-08
1.19971.8752331.911322e-08
1.21.8752241.911800e-08
1.204971.8750721.919715e-08
1.210261.8749111.928144e-08
1.215571.8747511.936610e-08
1.220911.8745911.945114e-08
1.226271.8744321.953655e-08
1.231661.8742731.962233e-08
1.237071.8741141.970849e-08
1.24251.8739561.979503e-08
1.247961.8737991.988195e-08
1.253441.8736411.996925e-08
1.258941.8734842.005694e-08
1.264471.8733282.014500e-08
1.270021.8731722.023346e-08
1.27561.8730162.032230e-08
1.28121.872862.041154e-08
1.286831.8727052.050117e-08
1.292481.872552.059119e-08
1.298151.8723952.068160e-08
1.303861.8722412.077241e-08
1.309581.8720862.086362e-08
1.315331.8719332.095524e-08
1.321111.8717792.104725e-08
1.326911.8716252.113967e-08
1.332741.8714722.123249e-08
1.338591.8713192.132572e-08
1.344471.8711662.141936e-08
1.350371.8710132.151342e-08
1.35631.870862.160788e-08
1.362261.8707082.170276e-08
1.368241.8705562.179806e-08
1.374251.8704032.189377e-08
1.380281.8702512.198991e-08
1.386341.8700992.208646e-08
1.392431.8699472.218345e-08
1.398551.8697952.228085e-08
1.41.8697592.230400e-08
1.404691.8696432.297747e-08
1.410861.8694912.386351e-08
1.417051.8693392.475345e-08
1.423281.8691872.564730e-08
1.429531.8690352.654507e-08
1.43581.8688832.744679e-08
1.442111.8687312.835247e-08
1.448441.8685792.926212e-08
1.45481.8684273.017576e-08
1.461191.8682753.109342e-08
1.467611.8681233.201511e-08
1.474051.8679713.294085e-08
1.480531.8678183.387065e-08
1.487031.8676663.480454e-08
1.493561.8675133.574252e-08
1.500121.867363.668463e-08
1.50671.8672073.763087e-08
1.513321.8670543.858127e-08
1.519971.86693.953584e-08
1.526641.8667474.049460e-08
1.533341.8665934.145758e-08
1.540081.8664394.242478e-08
1.546841.8662854.339623e-08
1.553631.866134.437194e-08
1.560461.8659754.535194e-08
1.567311.865824.633625e-08
1.574191.8656654.732487e-08
1.58111.8655094.831784e-08
1.588051.8653534.931517e-08
1.595021.8651975.031688e-08
1.61.8650855.103200e-08
1.602031.865045.211993e-08
1.609061.8648835.589807e-08
1.616131.8647255.969280e-08
1.623221.8645686.350420e-08
1.630351.8644096.733233e-08
1.637511.8642517.117728e-08
1.64471.8640927.503911e-08
1.651931.8639327.891790e-08
1.659181.8637728.281372e-08
1.666471.8636128.672665e-08
1.673781.8634519.065677e-08
1.681131.8632899.460414e-08
1.688521.8631279.856885e-08
1.695931.8629651.025510e-07
1.703381.8628021.065506e-07
1.710861.8626381.105677e-07
1.718371.8624741.146025e-07
1.725921.8623091.186551e-07
1.73351.8621441.227254e-07
1.741111.8619781.268136e-07
1.748761.8618121.309197e-07
1.756441.8616441.350439e-07
1.764151.8614771.391862e-07
1.77191.8613081.433467e-07
1.779681.8611391.475255e-07
1.787491.8609691.517226e-07
1.795341.8607981.559381e-07
1.81.8606971.584400e-07
1.803231.8606271.613322e-07
1.811141.8604551.684329e-07
1.81911.8602821.755647e-07
1.827091.8601091.827279e-07
1.835111.8599341.899225e-07
1.843171.8597591.971487e-07
1.851261.8595832.044067e-07
1.859391.8594062.116965e-07
1.867561.8592292.190184e-07
1.875761.859052.263724e-07
1.8841.8588712.337586e-07
1.892271.858692.411774e-07
1.900581.8585092.486287e-07
1.908921.8583272.561127e-07
1.917311.8581442.636296e-07
1.925731.857962.711795e-07
1.934181.8577752.787625e-07
1.942681.8575892.863789e-07
1.951211.8574022.940287e-07
1.959781.8572143.017121e-07
1.968381.8570253.094292e-07
1.977031.8568353.171802e-07
1.985711.8566443.249653e-07
1.994431.8564513.327845e-07
21.8563283.377800e-07
2.003191.8562583.423372e-07
2.011981.8560633.549143e-07
2.020821.8558683.675468e-07
2.029691.8556713.802347e-07
2.038611.8554733.929783e-07
2.047561.8552744.057779e-07
2.056551.8550734.186337e-07
2.065581.8548724.315459e-07
2.074651.8546694.445149e-07
2.083761.8544644.575408e-07
2.092911.8542594.706239e-07
2.10211.8540524.837644e-07
2.111341.8538444.969627e-07
2.120611.8536355.102189e-07
2.129921.8534245.235333e-07
2.139271.8532125.369062e-07
2.148671.8529985.503378e-07
2.15811.8527835.638285e-07
2.167581.8525675.773783e-07
2.17711.8523495.909877e-07
2.186661.852136.046568e-07
2.196261.8519096.183859e-07
2.21.8518236.237300e-07
2.205911.8516866.420139e-07
2.215591.8514626.719985e-07
2.225321.8512377.021149e-07
2.23511.851017.323634e-07
2.244911.8507817.627449e-07
2.254771.8505517.932597e-07
2.264671.8503198.239085e-07
2.274621.8500858.546920e-07
2.28461.849858.856106e-07
2.294641.8496139.166650e-07
2.304711.8493749.478557e-07
2.314831.8491349.791834e-07
2.3251.8488921.010649e-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
—