Optical constants

Refractive index of H-ZF52GT (CDGM)

H-ZF52GT: 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
1.84665
Extinction coefficient k
4.66640e-08
Permittivity ε1
3.41013
Permittivity ε2
1.72345e-07
Absorption coefficient α
0.00997954 cm⁻¹
Penetration depth δ = λ/(2πk)
2.00410e+09 nm
Abbe number Vd
23.784
Chromatic dispersion dn/dλ
-0.177629 µm⁻¹
Group index ng
1.95103
Group velocity dispersion
371.187 fs²/mm
Dispersion parameter D
-2025.02 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-ZF52GT (CDGM): H-ZF52GT
cdgm_h_zf52gt = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZF52GT", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zf52gt.range_nm)  # (404.7, 2325) nm
eps = cdgm_h_zf52gt.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=0.409982615λ2λ2−0.0621421199+2.37517176λ2λ2−185.055134+1.83913582λ2λ2−0.0136093459

Valid from 0.4047 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.409982615
C30.0621421199
C42.37517176
C5185.055134
C61.83913582
C70.0136093459

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -6.18e-06 1.63e-08 -4.5e-11 1.12e-06 1.19e-09 0.291
nd
1.846660
Vd
23.784497
glass code
847238
glass status
standard
density
value: 3510
thermal expansion
value: 8.8e-06, temperature range: 243 343; value: 1.08e-05, temperature range: 293 573
dPgF
0.0155
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -1.71e-06 K⁻¹ at 633 nm, dn/dT = -3.44e-06 K⁻¹ at 1310 nm, dn/dT = -3.54e-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-ZF52GT (CDGM), H-ZF52GT: n and k versus wavelength
λ (µm)nk
0.40471.9142485.175129e-07
0.4064771.9129134.889275e-07
0.4082621.9115994.602167e-07
0.4100551.9103064.313798e-07
0.4118561.9090324.024162e-07
0.4136641.9077783.733255e-07
0.4154811.9065423.441070e-07
0.4173051.9053263.147602e-07
0.4191381.9041272.852845e-07
0.421.9035712.714200e-07
0.4209791.9029472.669272e-07
0.4228271.9017832.584399e-07
0.4246841.9006372.499153e-07
0.4265491.8995082.413533e-07
0.4284221.8983952.327537e-07
0.4303041.8972982.241163e-07
0.4321931.8962172.154410e-07
0.4340911.8951512.067276e-07
0.4359971.89411.979760e-07
0.4379121.8930641.891859e-07
0.4398351.8920421.803572e-07
0.441.8919551.796000e-07
0.4417671.8910351.755908e-07
0.4437071.8900411.711880e-07
0.4456551.8890621.667659e-07
0.4476121.8880951.623244e-07
0.4495781.8871421.578634e-07
0.4515521.8862011.533828e-07
0.4535351.8852741.488825e-07
0.4555271.8843581.443624e-07
0.4575271.8834551.398226e-07
0.4595361.8825641.352627e-07
0.461.882361.342100e-07
0.4615541.8816841.322106e-07
0.4635811.8808161.296030e-07
0.4656171.879961.269840e-07
0.4676611.8791141.243535e-07
0.4697151.878281.217114e-07
0.4717781.8774561.190578e-07
0.473851.8766421.163924e-07
0.475931.8758391.137154e-07
0.478021.8750461.110266e-07
0.481.8743081.084800e-07
0.480121.8742631.083849e-07
0.4822281.873491.067090e-07
0.4843461.8727271.050258e-07
0.4864731.8719731.033352e-07
0.4886091.8712281.016372e-07
0.4907551.8704939.993168e-08
0.492911.8697679.821870e-08
0.4950741.8690499.649820e-08
0.4972481.868349.477015e-08
0.4994321.867649.303450e-08
0.51.867469.258300e-08
0.5016251.8669489.143524e-08
0.5038281.8662658.987952e-08
0.5060411.865598.831696e-08
0.5082631.8649228.674753e-08
0.5104951.8642638.517122e-08
0.5127361.8636128.358798e-08
0.5149881.8629688.199779e-08
0.517251.8623318.040062e-08
0.5195211.8617037.879644e-08
0.5218021.8610817.718521e-08
0.5240941.8604677.556690e-08
0.5263951.8598597.394149e-08
0.5287071.8592597.230894e-08
0.5310291.8586667.066922e-08
0.5333611.8580796.902230e-08
0.5357031.8574996.736815e-08
0.5380551.8569266.570673e-08
0.5404181.8563596.403802e-08
0.5427911.8557986.236198e-08
0.5451751.8552446.067858e-08
0.5475691.8546965.898778e-08
0.5499741.8541545.728956e-08
0.551.8541485.727100e-08
0.5523891.8536185.659710e-08
0.5548151.8530885.591280e-08
0.5572511.8525645.522548e-08
0.5596981.8520465.453516e-08
0.5621561.8515335.384180e-08
0.5646251.8510265.314539e-08
0.5671041.8505245.244593e-08
0.5695951.8500285.174339e-08
0.5720961.8495375.103777e-08
0.5746081.8490515.032905e-08
0.5771311.8485714.961722e-08
0.5796661.8480964.890226e-08
0.5822111.8476264.818417e-08
0.5847681.847164.746292e-08
0.5873361.84674.673850e-08
0.5899151.8462454.601090e-08
0.5925061.8457944.528011e-08
0.5951081.8453484.454610e-08
0.5977211.8449074.380888e-08
0.61.8445274.316600e-08
0.6003461.844474.315480e-08
0.6029821.8440384.306943e-08
0.605631.843614.298369e-08
0.608291.8431874.289758e-08
0.6109611.8427684.281108e-08
0.6136441.8423544.272421e-08
0.6163391.8419434.263695e-08
0.6190451.8415374.254931e-08
0.6217641.8411354.246129e-08
0.6244941.8407374.237288e-08
0.6272371.8403434.228408e-08
0.6299911.8399534.219489e-08
0.6327581.8395664.210531e-08
0.6355361.8391844.201534e-08
0.6383271.8388064.192497e-08
0.641131.8384314.183420e-08
0.6439461.838064.174304e-08
0.6467741.8376924.165147e-08
0.6496141.8373294.155951e-08
0.651.837284.154700e-08
0.6524671.8369684.142777e-08
0.6553321.8366124.128926e-08
0.658211.8362584.115015e-08
0.66111.8359094.101043e-08
0.6640031.8355624.087009e-08
0.6669191.8352194.072913e-08
0.6698481.8348794.058756e-08
0.6727891.8345434.044536e-08
0.6757441.8342094.030254e-08
0.6787111.8338794.015910e-08
0.6816921.8335524.001502e-08
0.6846851.8332283.987031e-08
0.6876921.8329073.972497e-08
0.6907121.8325893.957898e-08
0.6937451.8322743.943236e-08
0.6967921.8319623.928509e-08
0.6998521.8316533.913718e-08
0.71.8316383.913000e-08
0.7029251.8313473.910607e-08
0.7060121.8310433.908082e-08
0.7091121.8307433.905546e-08
0.7122261.8304453.902999e-08
0.7153541.830153.900441e-08
0.7184951.8298573.897871e-08
0.721651.8295673.895290e-08
0.7248191.829283.892698e-08
0.7280021.8289953.890094e-08
0.7311991.8287133.887479e-08
0.734411.8284343.884852e-08
0.7376351.8281573.882214e-08
0.7408751.8278823.879565e-08
0.7441281.827613.876903e-08
0.7473961.827343.874230e-08
0.7506781.8270733.871545e-08
0.7539741.8268073.868849e-08
0.7572851.8265453.866141e-08
0.7606111.8262843.863420e-08
0.7639511.8260263.860688e-08
0.7673061.825773.857944e-08
0.7706751.8255163.855187e-08
0.774061.8252643.852419e-08
0.7774591.8250143.849639e-08
0.7808731.8247673.846846e-08
0.7843021.8245223.844041e-08
0.7877461.8242783.841223e-08
0.7912061.8240373.838394e-08
0.794681.8237983.835552e-08
0.798171.823563.832697e-08
0.81.8234373.831200e-08
0.8016751.8233253.770935e-08
0.8051961.8230923.644275e-08
0.8087311.822863.517060e-08
0.8122831.822633.389285e-08
0.815851.8224033.260950e-08
0.8194331.8221773.132051e-08
0.8230311.8219523.002586e-08
0.8266451.821732.872552e-08
0.8302761.8215092.741948e-08
0.8339221.8212912.610770e-08
0.8375841.8210732.479016e-08
0.8412621.8208582.346683e-08
0.8449561.8206442.213769e-08
0.8486671.8204322.080271e-08
0.851.8203562.032300e-08
0.8523931.8202222.038020e-08
0.8561371.8200132.046967e-08
0.8598961.8198052.055952e-08
0.8636721.81962.064977e-08
0.8674651.8193952.074042e-08
0.8712751.8191932.083146e-08
0.8751011.8189922.092291e-08
0.8789441.8187922.101475e-08
0.8828031.8185942.110700e-08
0.886681.8183972.119965e-08
0.8905741.8182022.129271e-08
0.8944851.8180082.138618e-08
0.8984131.8178152.148006e-08
0.91.8177382.151800e-08
0.9023581.8176242.157440e-08
0.9063211.8174342.166919e-08
0.9103011.8172462.176439e-08
0.9142981.8170592.186001e-08
0.9183131.8168732.195605e-08
0.9223461.8166882.205251e-08
0.9263961.8165052.214940e-08
0.9304641.8163232.224671e-08
0.934551.8161422.234445e-08
0.9386541.8159622.244261e-08
0.9427761.8157842.254121e-08
0.9469161.8156072.264024e-08
0.951.8154762.271400e-08
0.9510751.8154312.273969e-08
0.9552511.8152562.283951e-08
0.9594461.8150822.293976e-08
0.963661.8149092.304046e-08
0.9678911.8147382.314160e-08
0.9721421.8145672.324319e-08
0.9764111.8143982.334522e-08
0.9806991.8142292.344770e-08
0.9850051.8140622.355062e-08
0.9893311.8138952.365400e-08
0.9936751.813732.375784e-08
0.9980391.8135662.386213e-08
11.8134922.390900e-08
1.002421.8134022.396692e-08
1.006821.813242.407220e-08
1.011251.8130782.417794e-08
1.015691.8129172.428415e-08
1.020151.8127582.439083e-08
1.024631.8125992.449797e-08
1.029131.8124412.460558e-08
1.033641.8122842.471367e-08
1.038181.8121282.482223e-08
1.042741.8119722.493127e-08
1.047321.8118182.504079e-08
1.051921.8116642.515078e-08
1.056541.8115112.526126e-08
1.061.8113972.534400e-08
1.061181.8113592.529151e-08
1.065841.8112072.508427e-08
1.070521.8110572.487612e-08
1.075221.8109072.466705e-08
1.079941.8107582.445707e-08
1.084691.8106092.424617e-08
1.089451.8104612.403434e-08
1.094231.8103142.382158e-08
1.099041.8101682.360788e-08
1.103871.8100222.339325e-08
1.108711.8098772.317768e-08
1.113581.8097332.296115e-08
1.118471.8095892.274368e-08
1.123381.8094452.252525e-08
1.128321.8093032.230587e-08
1.133271.8091612.208552e-08
1.138251.8090192.186420e-08
1.143251.8088782.164191e-08
1.148271.8087382.141864e-08
1.153311.8085982.119439e-08
1.158371.8084592.096916e-08
1.163461.808322.074294e-08
1.168571.8081822.051573e-08
1.17371.8080442.028752e-08
1.178861.8079072.005830e-08
1.184031.807771.982808e-08
1.189231.8076331.959685e-08
1.194451.8074971.936460e-08
1.19971.8073621.913134e-08
1.21.8073541.911800e-08
1.204971.8072272.003036e-08
1.210261.8070922.100204e-08
1.215571.8069582.197798e-08
1.220911.8068242.295821e-08
1.226271.806692.394274e-08
1.231661.8065572.493160e-08
1.237071.8064242.592480e-08
1.24251.8062922.692236e-08
1.247961.8061592.792430e-08
1.253441.8060272.893064e-08
1.258941.8058962.994140e-08
1.264471.8057643.095660e-08
1.270021.8056333.197626e-08
1.27561.8055033.300039e-08
1.28121.8053723.402903e-08
1.286831.8052423.506218e-08
1.292481.8051123.609986e-08
1.298151.8049823.714211e-08
1.303861.8048533.818893e-08
1.309581.8047233.924034e-08
1.315331.8045944.029638e-08
1.321111.8044654.135705e-08
1.326911.8043364.242238e-08
1.332741.8042074.349239e-08
1.338591.8040794.456709e-08
1.344471.8039514.564652e-08
1.350371.8038224.673069e-08
1.35631.8036944.781962e-08
1.362261.8035664.891332e-08
1.368241.8034385.001184e-08
1.374251.803315.111517e-08
1.380281.8031825.222336e-08
1.386341.8030555.333640e-08
1.392431.8029275.445434e-08
1.398551.8027995.557718e-08
1.41.8027695.584400e-08
1.404691.8026725.723336e-08
1.410861.8025445.906128e-08
1.417051.8024166.089723e-08
1.423281.8022896.274125e-08
1.429531.8021616.459336e-08
1.43581.8020346.645360e-08
1.442111.8019066.832201e-08
1.448441.8017787.019863e-08
1.45481.801657.208349e-08
1.461191.8015237.397662e-08
1.467611.8013957.587807e-08
1.474051.8012677.778787e-08
1.480531.8011387.970606e-08
1.487031.801018.163267e-08
1.493561.8008828.356774e-08
1.500121.8007538.551130e-08
1.50671.8006258.746341e-08
1.513321.8004968.942408e-08
1.519971.8003679.139336e-08
1.526641.8002389.337130e-08
1.533341.8001099.535792e-08
1.540081.7999799.735326e-08
1.546841.7998499.935736e-08
1.553631.799721.013703e-07
1.560461.7995891.033920e-07
1.567311.7994591.054226e-07
1.574191.7993281.074622e-07
1.58111.7991971.095107e-07
1.588051.7990661.115682e-07
1.595021.7989351.136347e-07
1.61.7988411.151100e-07
1.602031.7988031.173200e-07
1.609061.7986711.249950e-07
1.616131.7985381.327037e-07
1.623221.7984061.404462e-07
1.630351.7982731.482227e-07
1.637511.7981391.560334e-07
1.64471.7980061.638784e-07
1.651931.7978711.717578e-07
1.659181.7977371.796718e-07
1.666471.7976021.876206e-07
1.673781.7974671.956043e-07
1.681131.7973312.036230e-07
1.688521.7971952.116770e-07
1.695931.7970582.197663e-07
1.703381.7969212.278911e-07
1.710861.7967832.360517e-07
1.718371.7966452.442480e-07
1.725921.7965072.524804e-07
1.73351.7963682.607489e-07
1.741111.7962282.690537e-07
1.748761.7960882.773950e-07
1.756441.7959482.857729e-07
1.764151.7958062.941876e-07
1.77191.7956653.026393e-07
1.779681.7955223.111281e-07
1.787491.795383.196541e-07
1.795341.7952363.282176e-07
1.81.7951513.333000e-07
1.803231.7950923.378684e-07
1.811141.7949473.490844e-07
1.81911.7948023.603497e-07
1.827091.7946563.716644e-07
1.835111.7945093.830288e-07
1.843171.7943623.944431e-07
1.851261.7942144.059076e-07
1.859391.7940654.174224e-07
1.867561.7939164.289877e-07
1.875761.7937664.406039e-07
1.8841.7936154.522710e-07
1.892271.7934644.639894e-07
1.900581.7933114.757593e-07
1.908921.7931584.875808e-07
1.917311.7930044.994543e-07
1.925731.7928495.113798e-07
1.934181.7926945.233578e-07
1.942681.7925385.353884e-07
1.951211.792385.474717e-07
1.959781.7922225.596082e-07
1.968381.7920635.717979e-07
1.977031.7919045.840412e-07
1.985711.7917435.963383e-07
1.994431.7915816.086893e-07
21.7914786.165800e-07
2.003191.7914196.261026e-07
2.011981.7912556.523839e-07
2.020821.7910916.787805e-07
2.029691.7909257.052931e-07
2.038611.7907597.319221e-07
2.047561.7905927.586681e-07
2.056551.7904237.855315e-07
2.065581.7902548.125129e-07
2.074651.7900838.396127e-07
2.083761.7899128.668316e-07
2.092911.7897398.941700e-07
2.10211.7895669.216285e-07
2.111341.7893919.492075e-07
2.120611.7892159.769076e-07
2.129921.7890381.004729e-06
2.139271.788861.032673e-06
2.148671.788681.060740e-06
2.15811.78851.088930e-06
2.167581.7883181.117244e-06
2.17711.7881351.145682e-06
2.186661.7879511.174245e-06
2.196261.7877661.202933e-06
2.21.7876931.214100e-06
2.205911.7875791.250991e-06
2.215591.7873911.311492e-06
2.225321.7872021.372257e-06
2.23511.7870111.433290e-06
2.244911.7868191.494591e-06
2.254771.7866261.556161e-06
2.264671.7864311.618001e-06
2.274621.7862351.680113e-06
2.28461.7860381.742497e-06
2.294641.7858391.805156e-06
2.304711.7856391.868090e-06
2.314831.7854371.931300e-06
2.3251.7852341.994787e-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
—