Optical constants

Refractive index of H-ZF71GT (CDGM)

H-ZF71GT: 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
1.80809
Extinction coefficient k
3.50352e-08
Permittivity ε1
3.2692
Permittivity ε2
1.26694e-07
Absorption coefficient α
0.0074926 cm⁻¹
Penetration depth δ = λ/(2πk)
2.66930e+09 nm
Abbe number Vd
22.698
Chromatic dispersion dn/dλ
-0.17705 µm⁻¹
Group index ng
1.91213
Group velocity dispersion
373.795 fs²/mm
Dispersion parameter D
-2039.25 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-ZF71GT (CDGM): H-ZF71GT
cdgm_h_zf71gt = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZF71GT", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zf71gt.range_nm)  # (404.7, 2325) nm
eps = cdgm_h_zf71gt.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=0.406804868λ2λ2−0.064515213+1.70831097λ2λ2−0.0127703237+2.36137303λ2λ2−163.275585

Valid from 0.4047 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.406804868
C30.064515213
C41.70831097
C50.0127703237
C62.36137303
C7163.275585

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -9.66e-06 1.15e-08 -5.06e-11 9.75e-07 1.26e-09 0.313
nd
1.808100
Vd
22.698087
glass code
808227
density
value: 3300
thermal expansion
value: 9.3e-06, temperature range: 243 343; value: 1.05e-05, temperature range: 293 573
dPgF
0.0224
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -4.01e-06 K⁻¹ at 633 nm, dn/dT = -5.43e-06 K⁻¹ at 1310 nm, dn/dT = -5.51e-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-ZF71GT (CDGM), H-ZF71GT: n and k versus wavelength
λ (µm)nk
0.40471.8765923.843726e-07
0.4064771.8752143.620981e-07
0.4082621.8738583.397258e-07
0.4100551.8725243.172552e-07
0.4118561.8712122.946860e-07
0.4136641.8699212.720176e-07
0.4154811.868652.492498e-07
0.4173051.86742.263819e-07
0.4191381.8661692.034136e-07
0.421.8655991.926100e-07
0.4209791.8649571.901791e-07
0.4228271.8637641.855870e-07
0.4246841.862591.809747e-07
0.4265491.8614331.763421e-07
0.4284221.8602941.716893e-07
0.4303041.8591721.670159e-07
0.4321931.8580671.623221e-07
0.4340911.8569781.576076e-07
0.4359971.8559051.528725e-07
0.4379121.8548481.481165e-07
0.4398351.8538071.433397e-07
0.441.8537181.429300e-07
0.4417671.852781.404868e-07
0.4437071.8517681.378039e-07
0.4456551.8507711.351091e-07
0.4476121.8497881.324025e-07
0.4495781.8488191.296840e-07
0.4515521.8478631.269536e-07
0.4535351.8469211.242112e-07
0.4555271.8459921.214568e-07
0.4575271.8450751.186902e-07
0.4595361.8441711.159115e-07
0.461.8439651.152700e-07
0.4615541.843281.132193e-07
0.4635811.8424011.105449e-07
0.4656171.8415331.078587e-07
0.4676611.8406771.051607e-07
0.4697151.8398331.024508e-07
0.4717781.8399.972910e-08
0.473851.8381779.699541e-08
0.475931.8373669.424971e-08
0.478021.8365659.149196e-08
0.481.835828.888000e-08
0.480121.8357758.878063e-08
0.4822281.8349958.702982e-08
0.4843461.8342258.527132e-08
0.4864731.8334658.350510e-08
0.4886091.8327148.173112e-08
0.4907551.8319737.994936e-08
0.492911.8312427.815976e-08
0.4950741.8305197.636231e-08
0.4972481.8298067.455697e-08
0.4994321.8291027.274370e-08
0.51.828927.227200e-08
0.5016251.8284067.120905e-08
0.5038281.8277196.976826e-08
0.5060411.827046.832115e-08
0.5082631.826376.686768e-08
0.5104951.8257086.540783e-08
0.5127361.8250536.394157e-08
0.5149881.8244076.246887e-08
0.517251.8237696.098971e-08
0.5195211.8231385.950405e-08
0.5218021.8225155.801186e-08
0.5240941.8218995.651312e-08
0.5263951.821295.500780e-08
0.5287071.8206895.349587e-08
0.5310291.8200945.197730e-08
0.5333611.8195075.045206e-08
0.5357031.8189264.892013e-08
0.5380551.8183524.738146e-08
0.5404181.8177854.583604e-08
0.5427911.8172244.428383e-08
0.5451751.816674.272481e-08
0.5475691.8161224.115894e-08
0.5499741.815583.958619e-08
0.551.8155743.956900e-08
0.5523891.8150453.928095e-08
0.5548151.8145153.898845e-08
0.5572511.8139913.869467e-08
0.5596981.8134733.839960e-08
0.5621561.8129613.810323e-08
0.5646251.8124553.780556e-08
0.5671041.8119543.750658e-08
0.5695951.8114593.720630e-08
0.5720961.8109693.690469e-08
0.5746081.8104853.660175e-08
0.5771311.8100063.629749e-08
0.5796661.8095323.599189e-08
0.5822111.8090633.568495e-08
0.5847681.8085993.537666e-08
0.5873361.808143.506702e-08
0.5899151.8076863.475602e-08
0.5925061.8072373.444365e-08
0.5951081.8067933.412991e-08
0.5977211.8063533.381479e-08
0.61.8059753.354000e-08
0.6003461.8059183.352332e-08
0.6029821.8054883.339619e-08
0.605631.8050623.326851e-08
0.608291.804643.314027e-08
0.6109611.8042233.301146e-08
0.6136441.8038113.288209e-08
0.6163391.8034023.275215e-08
0.6190451.8029983.262163e-08
0.6217641.8025983.249055e-08
0.6244941.8022013.235889e-08
0.6272371.8018093.222665e-08
0.6299911.8014213.209383e-08
0.6327581.8010373.196043e-08
0.6355361.8006573.182644e-08
0.6383271.800283.169186e-08
0.641131.7999083.155670e-08
0.6439461.7995393.142094e-08
0.6467741.7991733.128458e-08
0.6496141.7988113.114762e-08
0.651.7987633.112900e-08
0.6524671.7984533.097080e-08
0.6553321.7980993.078702e-08
0.658211.7977473.060244e-08
0.66111.79743.041704e-08
0.6640031.7970553.023084e-08
0.6669191.7967143.004381e-08
0.6698481.7963762.985596e-08
0.6727891.7960422.966729e-08
0.6757441.795712.947779e-08
0.6787111.7953822.928746e-08
0.6816921.7950572.909629e-08
0.6846851.7947352.890428e-08
0.6876921.7944162.871143e-08
0.6907121.79412.851773e-08
0.6937451.7937872.832319e-08
0.6967921.7934772.812778e-08
0.6998521.793172.793152e-08
0.71.7931552.792200e-08
0.7029251.7928652.785163e-08
0.7060121.7925632.777736e-08
0.7091121.7922652.770276e-08
0.7122261.7919682.762784e-08
0.7153541.7916752.755259e-08
0.7184951.7913842.747701e-08
0.721651.7910962.740109e-08
0.7248191.7908112.732485e-08
0.7280021.7905282.724826e-08
0.7311991.7902472.717135e-08
0.734411.7899692.709409e-08
0.7376351.7896932.701649e-08
0.7408751.789422.693856e-08
0.7441281.789152.686028e-08
0.7473961.7888812.678166e-08
0.7506781.7886152.670269e-08
0.7539741.7883512.662337e-08
0.7572851.788092.654371e-08
0.7606111.7878312.646370e-08
0.7639511.7875742.638334e-08
0.7673061.7873192.630262e-08
0.7706751.7870662.622155e-08
0.774061.7868152.614012e-08
0.7774591.7865672.605834e-08
0.7808731.7863212.597619e-08
0.7843021.7860762.589369e-08
0.7877461.7858342.581082e-08
0.7912061.7855932.572759e-08
0.794681.7853552.564399e-08
0.798171.7851192.556003e-08
0.81.7849962.551600e-08
0.8016751.7848842.511486e-08
0.8051961.7846512.427178e-08
0.8087311.784422.342499e-08
0.8122831.7841912.257449e-08
0.815851.7839642.172025e-08
0.8194331.7837392.086226e-08
0.8230311.7835152.000051e-08
0.8266451.7832931.913496e-08
0.8302761.7830731.826562e-08
0.8339221.7828551.739246e-08
0.8375841.7826381.651547e-08
0.8412621.7824231.563462e-08
0.8449561.7822091.474991e-08
0.8486671.7819971.386131e-08
0.851.7819221.354200e-08
0.8523931.7817871.358010e-08
0.8561371.7815781.363970e-08
0.8598961.7813711.369955e-08
0.8636721.7811651.375967e-08
0.8674651.7809611.382005e-08
0.8712751.7807581.388069e-08
0.8751011.7805571.394160e-08
0.8789441.7803571.400278e-08
0.8828031.7801591.406423e-08
0.886681.7799621.412595e-08
0.8905741.7797661.418794e-08
0.8944851.7795721.425020e-08
0.8984131.7793791.431273e-08
0.91.7793011.433800e-08
0.9023581.7791871.437559e-08
0.9063211.7789961.443875e-08
0.9103011.7788071.450219e-08
0.9142981.778621.456591e-08
0.9183131.7784331.462991e-08
0.9223461.7782481.469419e-08
0.9263961.7780631.475876e-08
0.9304641.777881.482360e-08
0.934551.7776991.488873e-08
0.9386541.7775181.495415e-08
0.9427761.7773381.501986e-08
0.9469161.777161.508585e-08
0.951.7770281.513500e-08
0.9510751.7769831.515211e-08
0.9552511.7768061.521860e-08
0.9594461.7766311.528538e-08
0.963661.7764571.535246e-08
0.9678911.7762841.541983e-08
0.9721421.7761121.548750e-08
0.9764111.7759411.555546e-08
0.9806991.7757711.562372e-08
0.9850051.7756021.569228e-08
0.9893311.7754341.576115e-08
0.9936751.7752661.583031e-08
0.9980391.77511.589978e-08
11.7750261.593100e-08
1.002421.7749351.596959e-08
1.006821.774771.603972e-08
1.011251.7746071.611017e-08
1.015691.7744441.618093e-08
1.020151.7742821.625199e-08
1.024631.7741211.632337e-08
1.029131.7739611.639507e-08
1.033641.7738011.646707e-08
1.038181.7736421.653940e-08
1.042741.7734851.661204e-08
1.047321.7733271.668500e-08
1.051921.7731711.675828e-08
1.056541.7730151.683188e-08
1.061.77291.688700e-08
1.061181.772861.690581e-08
1.065841.7727061.698007e-08
1.070521.7725531.705466e-08
1.075221.77241.712957e-08
1.079941.7722471.720482e-08
1.084691.7720961.728039e-08
1.089451.7719451.735630e-08
1.094231.7717941.743254e-08
1.099041.7716451.750911e-08
1.103871.7714951.758602e-08
1.108711.7713471.766327e-08
1.113581.7711991.774086e-08
1.118471.7710511.781879e-08
1.123381.7709041.789706e-08
1.128321.7707581.797567e-08
1.133271.7706121.805463e-08
1.138251.7704671.813394e-08
1.143251.7703221.821359e-08
1.148271.7701771.829360e-08
1.153311.7700331.837395e-08
1.158371.769891.845466e-08
1.163461.7697471.853572e-08
1.168571.7696041.861714e-08
1.17371.7694621.869892e-08
1.178861.769321.878106e-08
1.184031.7691791.886355e-08
1.189231.7690371.894641e-08
1.194451.7688971.902963e-08
1.19971.7687561.911322e-08
1.21.7687481.911800e-08
1.204971.7686162.003036e-08
1.210261.7684762.100204e-08
1.215571.7683372.197798e-08
1.220911.7681982.295821e-08
1.226271.7680592.394274e-08
1.231661.7679212.493160e-08
1.237071.7677822.592480e-08
1.24251.7676442.692236e-08
1.247961.7675062.792430e-08
1.253441.7673692.893064e-08
1.258941.7672312.994140e-08
1.264471.7670943.095660e-08
1.270021.7669573.197626e-08
1.27561.7668213.300039e-08
1.28121.7666843.402903e-08
1.286831.7665473.506218e-08
1.292481.7664113.609986e-08
1.298151.7662753.714211e-08
1.303861.7661393.818893e-08
1.309581.7660033.924034e-08
1.315331.7658674.029638e-08
1.321111.7657314.135705e-08
1.326911.7655964.242238e-08
1.332741.765464.349239e-08
1.338591.7653254.456709e-08
1.344471.7651894.564652e-08
1.350371.7650544.673069e-08
1.35631.7649184.781962e-08
1.362261.7647834.891332e-08
1.368241.7646475.001184e-08
1.374251.7645125.111517e-08
1.380281.7643765.222336e-08
1.386341.7642415.333640e-08
1.392431.7641055.445434e-08
1.398551.7639695.557718e-08
1.41.7639375.584400e-08
1.404691.7638345.693236e-08
1.410861.7636985.836426e-08
1.417051.7635625.980245e-08
1.423281.7634266.124696e-08
1.429531.763296.269781e-08
1.43581.7631536.415503e-08
1.442111.7630176.561865e-08
1.448441.762886.708869e-08
1.45481.7627446.856520e-08
1.461191.7626077.004818e-08
1.467611.762477.153768e-08
1.474051.7623327.303372e-08
1.480531.7621957.453633e-08
1.487031.7620577.604554e-08
1.493561.7619197.756138e-08
1.500121.7617817.908387e-08
1.50671.7616428.061305e-08
1.513321.7615048.214894e-08
1.519971.7613658.369158e-08
1.526641.7612258.524100e-08
1.533341.7610868.679721e-08
1.540081.7609468.836026e-08
1.546841.7608058.993018e-08
1.553631.7606659.150699e-08
1.560461.7605249.309072e-08
1.567311.7603829.468141e-08
1.574191.7602419.627908e-08
1.58111.7600999.788377e-08
1.588051.7599569.949551e-08
1.595021.7598131.011143e-07
1.61.7597111.022700e-07
1.602031.759671.037218e-07
1.609061.7595261.087635e-07
1.616131.7593821.138274e-07
1.623221.7592371.189135e-07
1.630351.7590921.240219e-07
1.637511.7589461.291528e-07
1.64471.75881.343062e-07
1.651931.7586531.394822e-07
1.659181.7585061.446809e-07
1.666471.7583581.499025e-07
1.673781.758211.551470e-07
1.681131.7580611.604146e-07
1.688521.7579121.657053e-07
1.695931.7577621.710192e-07
1.703381.7576111.763564e-07
1.710861.757461.817171e-07
1.718371.7573081.871014e-07
1.725921.7571551.925092e-07
1.73351.7570021.979409e-07
1.741111.7568482.033963e-07
1.748761.7566942.088758e-07
1.756441.7565392.143793e-07
1.764151.7563832.199069e-07
1.77191.7562262.254588e-07
1.779681.7560692.310352e-07
1.787491.7559112.366360e-07
1.795341.7557522.422614e-07
1.81.7556582.456000e-07
1.803231.7555922.499868e-07
1.811141.7554322.607570e-07
1.81911.7552712.715745e-07
1.827091.7551092.824395e-07
1.835111.7549462.933522e-07
1.843171.7547823.043128e-07
1.851261.7546173.153215e-07
1.859391.7544523.263786e-07
1.867561.7542853.374843e-07
1.875761.7541183.486387e-07
1.8841.753953.598421e-07
1.892271.7537813.710947e-07
1.900581.7536113.823967e-07
1.908921.753443.937483e-07
1.917311.7532684.051498e-07
1.925731.7530954.166014e-07
1.934181.7529214.281033e-07
1.942681.7527464.396556e-07
1.951211.752574.512587e-07
1.959781.7523934.629128e-07
1.968381.7522154.746180e-07
1.977031.7520354.863746e-07
1.985711.7518554.981829e-07
1.994431.7516735.100430e-07
21.7515575.176200e-07
2.003191.7514915.329382e-07
2.011981.7513075.752147e-07
2.020821.7511226.176768e-07
2.029691.7509366.603253e-07
2.038611.7507497.031612e-07
2.047561.750567.461851e-07
2.056551.750377.893980e-07
2.065581.7501798.328007e-07
2.074651.7499878.763940e-07
2.083761.7497949.201787e-07
2.092911.7495999.641556e-07
2.10211.7494031.008326e-06
2.111341.7492051.052690e-06
2.120611.7490061.097249e-06
2.129921.7488061.142003e-06
2.139271.7486041.186954e-06
2.148671.7484011.232103e-06
2.15811.7481971.277450e-06
2.167581.7479911.322995e-06
2.17711.7477831.368741e-06
2.186661.7475741.414688e-06
2.196261.7473641.460837e-06
2.21.7472821.478800e-06
2.205911.7471521.522168e-06
2.215591.7469391.593290e-06
2.225321.7467241.664725e-06
2.23511.7465071.736473e-06
2.244911.7462891.808536e-06
2.254771.7460691.880915e-06
2.264671.7458471.953612e-06
2.274621.7456242.026629e-06
2.28461.7453992.099966e-06
2.294641.7451732.173626e-06
2.304711.7449442.247608e-06
2.314831.7447142.321916e-06
2.3251.7444822.396550e-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
—