Optical constants

Refractive index of H-ZF73GT (CDGM)

H-ZF73GT: 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
1.95905
Extinction coefficient k
5.32827e-08
Permittivity ε1
3.83788
Permittivity ε2
2.08767e-07
Absorption coefficient α
0.011395 cm⁻¹
Penetration depth δ = λ/(2πk)
1.75516e+09 nm
Abbe number Vd
17.472
Chromatic dispersion dn/dλ
-0.269871 µm⁻¹
Group index ng
2.11763
Group velocity dispersion
594.603 fs²/mm
Dispersion parameter D
-3243.87 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-ZF73GT (CDGM): H-ZF73GT
cdgm_h_zf73gt = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZF73GT", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zf73gt.range_nm)  # (404.7, 2325) nm
eps = cdgm_h_zf73gt.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=0.528336971λ2λ2−0.0759305743+2.05959954λ2λ2−0.0171346469+3.5863808λ2λ2−189.364809

Valid from 0.4047 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.528336971
C30.0759305743
C42.05959954
C50.0171346469
C63.5863808
C7189.364809

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -2.47e-06 1.75e-08 -4.65e-11 1.29e-06 1.86e-09 0.328
nd
1.959060
Vd
17.472434
glass code
959175
density
value: 3490
thermal expansion
value: 5.8e-06, temperature range: 243 343; value: 7.4e-06, temperature range: 293 573
dPgF
0.0426
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.39e-06 K⁻¹ at 633 nm, dn/dT = -1.14e-06 K⁻¹ at 1310 nm, dn/dT = -1.30e-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-ZF73GT (CDGM), H-ZF73GT: n and k versus wavelength
λ (µm)nk
0.40472.069333.754010e-06
0.4064772.0669743.404586e-06
0.4082622.0646643.053628e-06
0.4100552.0623982.701129e-06
0.4118562.0601742.347082e-06
0.4136642.0579911.991480e-06
0.4154812.0558491.634317e-06
0.4173052.0537451.275585e-06
0.4191382.051689.152779e-07
0.422.0507247.458000e-07
0.4209792.0496527.277396e-07
0.4228272.0476596.936221e-07
0.4246842.0457026.593549e-07
0.4265492.0437786.249371e-07
0.4284222.0418885.903683e-07
0.4303042.040035.556476e-07
0.4321932.0382045.207744e-07
0.4340912.0364094.857482e-07
0.4359972.0346434.505681e-07
0.4379122.0329074.152335e-07
0.4398352.0311993.797437e-07
0.442.0310543.767000e-07
0.4417672.0295193.679361e-07
0.4437072.0278663.583119e-07
0.4456552.026243.486454e-07
0.4476122.0246393.389365e-07
0.4495782.0230643.291850e-07
0.4515522.0215143.193906e-07
0.4535352.0199883.095533e-07
0.4555272.0184852.996727e-07
0.4575272.0170052.897487e-07
0.4595362.0155482.797812e-07
0.462.0152162.774800e-07
0.4615542.0141132.730235e-07
0.4635812.01272.672114e-07
0.4656172.0113082.613739e-07
0.4676612.0099362.555107e-07
0.4697152.0085842.496217e-07
0.4717782.0072532.437069e-07
0.473852.0059412.377662e-07
0.475932.0046472.317993e-07
0.478022.0033722.258062e-07
0.482.0021872.201300e-07
0.480122.0021162.198344e-07
0.4822282.0008772.146256e-07
0.4843461.9996562.093939e-07
0.4864731.9984522.041393e-07
0.4886091.9972651.988616e-07
0.4907551.9960941.935607e-07
0.492911.9949391.882365e-07
0.4950741.99381.828890e-07
0.4972481.9926771.775180e-07
0.4994321.9915681.721233e-07
0.51.9912831.707200e-07
0.5016251.9904751.679000e-07
0.5038281.9893971.640776e-07
0.5060411.9883321.602384e-07
0.5082631.9872821.563824e-07
0.5104951.9862461.525094e-07
0.5127361.9852231.486194e-07
0.5149881.9842141.447123e-07
0.517251.9832181.407881e-07
0.5195211.9822341.368466e-07
0.5218021.9812641.328879e-07
0.5240941.9803051.289117e-07
0.5263951.9793591.249181e-07
0.5287071.9784251.209070e-07
0.5310291.9775031.168782e-07
0.5333611.9765921.128317e-07
0.5357031.9756921.087675e-07
0.5380551.9748041.046854e-07
0.5404181.9739271.005854e-07
0.5427911.973069.646744e-08
0.5451751.9722049.233136e-08
0.5475691.9713598.817711e-08
0.5499741.9705248.400461e-08
0.551.9705158.395900e-08
0.5523891.9696998.201002e-08
0.5548151.9688848.003094e-08
0.5572511.9680787.804318e-08
0.5596981.9672837.604668e-08
0.5621561.9664967.404141e-08
0.5646251.9657197.202734e-08
0.5671041.9649517.000443e-08
0.5695951.9641936.797263e-08
0.5720961.9634436.593191e-08
0.5746081.9627016.388223e-08
0.5771311.9619696.182354e-08
0.5796661.9612445.975582e-08
0.5822111.9605295.767902e-08
0.5847681.9598215.559309e-08
0.5873361.9591215.349801e-08
0.5899151.9584295.139372e-08
0.5925061.9577464.928020e-08
0.5951081.9570694.715739e-08
0.5977211.9564014.502526e-08
0.61.9558264.316600e-08
0.6003461.955744.311874e-08
0.6029821.9550864.275856e-08
0.605631.9544394.239680e-08
0.608291.95384.203345e-08
0.6109611.9531674.166851e-08
0.6136441.9525424.130196e-08
0.6163391.9519234.093380e-08
0.6190451.9513124.056403e-08
0.6217641.9507064.019263e-08
0.6244941.9501083.981960e-08
0.6272371.9495153.944494e-08
0.6299911.9489293.906862e-08
0.6327581.948353.869066e-08
0.6355361.9477763.831104e-08
0.6383271.9472083.792975e-08
0.641131.9466473.754678e-08
0.6439461.9460913.716213e-08
0.6467741.9455423.677580e-08
0.6496141.9449973.638776e-08
0.651.9449243.633500e-08
0.6524671.9444593.591999e-08
0.6553321.9439263.543788e-08
0.658211.9433993.495366e-08
0.66111.9428773.446731e-08
0.6640031.942363.397883e-08
0.6669191.9418493.348820e-08
0.6698481.9413433.299541e-08
0.6727891.9408423.250047e-08
0.6757441.9403463.200335e-08
0.6787111.9398553.150404e-08
0.6816921.9393693.100254e-08
0.6846851.9388883.049885e-08
0.6876921.9384112.999293e-08
0.6907121.937942.948480e-08
0.6937451.9374722.897444e-08
0.6967921.937012.846183e-08
0.6998521.9365522.794698e-08
0.71.936532.792200e-08
0.7029251.9360982.785163e-08
0.7060121.9356492.777736e-08
0.7091121.9352052.770276e-08
0.7122261.9347642.762784e-08
0.7153541.9343282.755259e-08
0.7184951.9338962.747701e-08
0.721651.9334682.740109e-08
0.7248191.9330442.732485e-08
0.7280021.9326242.724826e-08
0.7311991.9322082.717135e-08
0.734411.9317962.709409e-08
0.7376351.9313882.701649e-08
0.7408751.9309832.693856e-08
0.7441281.9305832.686028e-08
0.7473961.9301862.678166e-08
0.7506781.9297922.670269e-08
0.7539741.9294022.662337e-08
0.7572851.9290162.654371e-08
0.7606111.9286342.646370e-08
0.7639511.9282542.638334e-08
0.7673061.9278782.630262e-08
0.7706751.9275062.622155e-08
0.774061.9271372.614012e-08
0.7774591.9267712.605834e-08
0.7808731.9264082.597619e-08
0.7843021.9260492.589369e-08
0.7877461.9256932.581082e-08
0.7912061.9253392.572759e-08
0.794681.9249892.564399e-08
0.798171.9246422.556003e-08
0.81.9244622.551600e-08
0.8016751.9242982.511486e-08
0.8051961.9239572.427178e-08
0.8087311.9236182.342499e-08
0.8122831.9232832.257449e-08
0.815851.922952.172025e-08
0.8194331.9226212.086226e-08
0.8230311.9222942.000051e-08
0.8266451.9219691.913496e-08
0.8302761.9216481.826562e-08
0.8339221.9213291.739246e-08
0.8375841.9210121.651547e-08
0.8412621.9206981.563462e-08
0.8449561.9203871.474991e-08
0.8486671.9200781.386131e-08
0.851.9199681.354200e-08
0.8523931.9197721.358010e-08
0.8561371.9194681.363970e-08
0.8598961.9191671.369955e-08
0.8636721.9188681.375967e-08
0.8674651.9185711.382005e-08
0.8712751.9182761.388069e-08
0.8751011.9179841.394160e-08
0.8789441.9176941.400278e-08
0.8828031.9174071.406423e-08
0.886681.9171211.412595e-08
0.8905741.9168381.418794e-08
0.8944851.9165561.425020e-08
0.8984131.9162771.431273e-08
0.91.9161651.433800e-08
0.9023581.9161.437559e-08
0.9063211.9157251.443875e-08
0.9103011.9154521.450219e-08
0.9142981.9151811.456591e-08
0.9183131.9149121.462991e-08
0.9223461.9146451.469419e-08
0.9263961.914381.475876e-08
0.9304641.9141161.482360e-08
0.934551.9138551.488873e-08
0.9386541.9135951.495415e-08
0.9427761.9133371.501986e-08
0.9469161.9130811.508585e-08
0.951.9128921.513500e-08
0.9510751.9128271.515211e-08
0.9552511.9125741.521860e-08
0.9594461.9123231.528538e-08
0.963661.9120741.535246e-08
0.9678911.9118261.541983e-08
0.9721421.911581.548750e-08
0.9764111.9113351.555546e-08
0.9806991.9110921.562372e-08
0.9850051.9108511.569228e-08
0.9893311.9106111.576115e-08
0.9936751.9103731.583031e-08
0.9980391.9101361.589978e-08
11.910031.593100e-08
1.002421.9099011.596959e-08
1.006821.9096671.603972e-08
1.011251.9094341.611017e-08
1.015691.9092031.618093e-08
1.020151.9089731.625199e-08
1.024631.9087441.632337e-08
1.029131.9085171.639507e-08
1.033641.9082911.646707e-08
1.038181.9080671.653940e-08
1.042741.9078431.661204e-08
1.047321.9076211.668500e-08
1.051921.90741.675828e-08
1.056541.9071811.683188e-08
1.061.9070181.688700e-08
1.061181.9069621.690581e-08
1.065841.9067451.698007e-08
1.070521.9065291.705466e-08
1.075221.9063131.712957e-08
1.079941.9060991.720482e-08
1.084691.9058861.728039e-08
1.089451.9056741.735630e-08
1.094231.9054631.743254e-08
1.099041.9052541.750911e-08
1.103871.9050451.758602e-08
1.108711.9048371.766327e-08
1.113581.904631.774086e-08
1.118471.9044241.781879e-08
1.123381.9042191.789706e-08
1.128321.9040141.797567e-08
1.133271.9038111.805463e-08
1.138251.9036081.813394e-08
1.143251.9034071.821359e-08
1.148271.9032061.829360e-08
1.153311.9030061.837395e-08
1.158371.9028071.845466e-08
1.163461.9026081.853572e-08
1.168571.902411.861714e-08
1.17371.9022131.869892e-08
1.178861.9020171.878106e-08
1.184031.9018221.886355e-08
1.189231.9016271.894641e-08
1.194451.9014331.902963e-08
1.19971.9012391.911322e-08
1.21.9012281.911800e-08
1.204971.9010461.919715e-08
1.210261.9008541.928144e-08
1.215571.9006621.936610e-08
1.220911.9004711.945114e-08
1.226271.900281.953655e-08
1.231661.900091.962233e-08
1.237071.8999011.970849e-08
1.24251.8997121.979503e-08
1.247961.8995231.988195e-08
1.253441.8993351.996925e-08
1.258941.8991472.005694e-08
1.264471.898962.014500e-08
1.270021.8987742.023346e-08
1.27561.8985872.032230e-08
1.28121.8984012.041154e-08
1.286831.8982162.050117e-08
1.292481.8980312.059119e-08
1.298151.8978462.068160e-08
1.303861.8976612.077241e-08
1.309581.8974772.086362e-08
1.315331.8972932.095524e-08
1.321111.897112.104725e-08
1.326911.8969262.113967e-08
1.332741.8967432.123249e-08
1.338591.8965612.132572e-08
1.344471.8963782.141936e-08
1.350371.8961962.151342e-08
1.35631.8960132.160788e-08
1.362261.8958312.170276e-08
1.368241.895652.179806e-08
1.374251.8954682.189377e-08
1.380281.8952862.198991e-08
1.386341.8951052.208646e-08
1.392431.8949232.218345e-08
1.398551.8947422.228085e-08
1.41.8946992.230400e-08
1.404691.8945612.297747e-08
1.410861.894382.386351e-08
1.417051.8941982.475345e-08
1.423281.8940172.564730e-08
1.429531.8938362.654507e-08
1.43581.8936552.744679e-08
1.442111.8934742.835247e-08
1.448441.8932932.926212e-08
1.45481.8931113.017576e-08
1.461191.892933.109342e-08
1.467611.8927493.201511e-08
1.474051.8925673.294085e-08
1.480531.8923853.387065e-08
1.487031.8922043.480454e-08
1.493561.8920223.574252e-08
1.500121.891843.668463e-08
1.50671.8916573.763087e-08
1.513321.8914753.858127e-08
1.519971.8912923.953584e-08
1.526641.8911094.049460e-08
1.533341.8909264.145758e-08
1.540081.8907424.242478e-08
1.546841.8905594.339623e-08
1.553631.8903754.437194e-08
1.560461.890194.535194e-08
1.567311.8900064.633625e-08
1.574191.8898214.732487e-08
1.58111.8896354.831784e-08
1.588051.889454.931517e-08
1.595021.8892645.031688e-08
1.61.8891315.103200e-08
1.602031.8890775.182680e-08
1.609061.888895.458696e-08
1.616131.8887035.735924e-08
1.623221.8885156.014369e-08
1.630351.8883276.294037e-08
1.637511.8881386.574934e-08
1.64471.8879496.857064e-08
1.651931.8877597.140433e-08
1.659181.8875697.425046e-08
1.666471.8873787.710909e-08
1.673781.8871877.998027e-08
1.681131.8869958.286407e-08
1.688521.8868028.576052e-08
1.695931.8866098.866970e-08
1.703381.8864159.159165e-08
1.710861.8862219.452644e-08
1.718371.8860269.747411e-08
1.725921.885831.004347e-07
1.73351.8856341.034083e-07
1.741111.8854361.063950e-07
1.748761.8852391.093948e-07
1.756441.885041.124078e-07
1.764151.8848411.154340e-07
1.77191.884641.184734e-07
1.779681.8844391.215263e-07
1.787491.8842381.245925e-07
1.795341.8840351.276722e-07
1.81.8839151.295000e-07
1.803231.8838321.312907e-07
1.811141.8836271.356872e-07
1.81911.8834221.401029e-07
1.827091.8832161.445381e-07
1.835111.8830091.489927e-07
1.843171.8828011.534669e-07
1.851261.8825921.579607e-07
1.859391.8823821.624743e-07
1.867561.8821711.670076e-07
1.875761.8819591.715609e-07
1.8841.8817461.761342e-07
1.892271.8815331.807276e-07
1.900581.8813171.853411e-07
1.908921.8811011.899749e-07
1.917311.8808841.946291e-07
1.925731.8806661.993037e-07
1.934181.8804462.039988e-07
1.942681.8802262.087145e-07
1.951211.8800042.134510e-07
1.959781.8797812.182082e-07
1.968381.8795572.229863e-07
1.977031.8793312.277855e-07
1.985711.8791052.326057e-07
1.994431.8788772.374470e-07
21.8787312.405400e-07
2.003191.8786472.449174e-07
2.011981.8784172.569984e-07
2.020821.8781852.691326e-07
2.029691.8779522.813199e-07
2.038611.8777172.935609e-07
2.047561.8774813.058555e-07
2.056551.8772433.182042e-07
2.065581.8770043.306071e-07
2.074651.8767643.430644e-07
2.083761.8765223.555765e-07
2.092911.8762793.681435e-07
2.10211.8760343.807657e-07
2.111341.8757873.934433e-07
2.120611.8755394.061766e-07
2.129921.875294.189658e-07
2.139271.8750394.318112e-07
2.148671.8747864.447130e-07
2.15811.8745314.576714e-07
2.167581.8742754.706868e-07
2.17711.8740174.837593e-07
2.186661.8737574.968892e-07
2.196261.8734965.100767e-07
2.21.8733945.152100e-07
2.205911.8732335.259652e-07
2.215591.8729685.436033e-07
2.225321.8727015.613189e-07
2.23511.8724325.791122e-07
2.244911.8721625.969837e-07
2.254771.8718896.149337e-07
2.264671.8716156.329625e-07
2.274621.8713396.510704e-07
2.28461.871066.692579e-07
2.294641.870786.875252e-07
2.304711.8704987.058728e-07
2.314831.8702147.243009e-07
2.3251.8699277.428100e-07

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
—