Optical constants

Refractive index of H-ZF7LA (CDGM)

H-ZF7LA: 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
1.80517
Extinction coefficient k
2.56224e-08
Permittivity ε1
3.25865
Permittivity ε2
9.25057e-08
Absorption coefficient α
0.00547958 cm⁻¹
Penetration depth δ = λ/(2πk)
3.64991e+09 nm
Abbe number Vd
25.456
Chromatic dispersion dn/dλ
-0.158239 µm⁻¹
Group index ng
1.89815
Group velocity dispersion
327.073 fs²/mm
Dispersion parameter D
-1784.36 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-ZF7LA (CDGM): H-ZF7LA
cdgm_h_zf7la = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZF7LA", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zf7la.range_nm)  # (365, 2325) nm
eps = cdgm_h_zf7la.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=1.65846092λ2λ2−144.874699+0.298796445λ2λ2−0.0635424599+1.8184834λ2λ2−0.0141908346

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.65846092
C3144.874699
C40.298796445
C50.0635424599
C61.8184834
C70.0141908346

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -7.91e-06 1.24e-08 -3.12e-11 1.09e-06 1.48e-09 0.281
nd
1.805180
Vd
25.456256
glass code
805255
glass status
standard
density
value: 3350
thermal expansion
value: 9e-06, temperature range: 243 343; value: 1.13e-05, temperature range: 293 573
dPgF
0.0127
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -2.81e-06 K⁻¹ at 633 nm, dn/dT = -4.35e-06 K⁻¹ at 1310 nm, dn/dT = -4.45e-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-ZF7LA (CDGM), H-ZF7LA: n and k versus wavelength
λ (µm)nk
0.3651.8986887.262450e-06
0.3666981.8968375.970626e-06
0.3684031.8950234.672793e-06
0.371.8933653.457900e-06
0.3701171.8932453.432862e-06
0.3718381.8915023.064247e-06
0.3735681.8897922.693917e-06
0.3753061.8881162.321865e-06
0.3770511.8864711.948082e-06
0.3788051.8848571.572560e-06
0.381.8837791.316700e-06
0.3805671.8832731.279123e-06
0.3823371.8817191.161812e-06
0.3841161.8801921.043956e-06
0.3859021.8786949.255510e-07
0.3876971.8772228.065955e-07
0.38951.8757766.870867e-07
0.391.8753816.539800e-07
0.3913121.8743556.229873e-07
0.3931321.8729595.799960e-07
0.3949611.8715875.368048e-07
0.3967981.8702394.934126e-07
0.3986441.8689144.498187e-07
0.41.8679574.177800e-07
0.4004981.867614.125287e-07
0.4023611.8663293.928775e-07
0.4042321.8650683.731349e-07
0.4061121.8638293.533005e-07
0.4080011.8626093.333738e-07
0.4098991.8614093.133545e-07
0.4118061.8602282.932420e-07
0.4137211.8590662.730360e-07
0.4156451.8579232.527360e-07
0.4175791.8567972.323416e-07
0.4195211.8556892.118523e-07
0.421.8554192.068000e-07
0.4214721.8545982.007595e-07
0.4234331.8535231.927169e-07
0.4254021.8524651.846369e-07
0.4273811.8514231.765194e-07
0.4293691.8503971.683641e-07
0.4313661.8493861.601708e-07
0.4333721.8483891.519394e-07
0.4353881.8474081.436698e-07
0.4374131.8464411.353617e-07
0.4394481.8454881.270149e-07
0.441.8452321.247500e-07
0.4414921.8445481.220776e-07
0.4435451.8436231.183992e-07
0.4456091.842711.147037e-07
0.4476811.841811.109910e-07
0.4497641.8409231.072611e-07
0.4518561.8400491.035138e-07
0.4539571.8391869.974908e-08
0.4560691.8383369.596684e-08
0.458191.8374979.216702e-08
0.461.8367948.892500e-08
0.4603211.836678.861105e-08
0.4624621.8358548.651876e-08
0.4646131.835058.441674e-08
0.4667751.8342568.230494e-08
0.4689461.8334728.018332e-08
0.4711271.83277.805183e-08
0.4733181.8319377.591043e-08
0.475521.8311857.375907e-08
0.4777321.8304427.159769e-08
0.4799541.8297096.942627e-08
0.481.8296946.938100e-08
0.4821861.8289866.837037e-08
0.4844291.8282726.733352e-08
0.4866821.8275686.629185e-08
0.4889461.8268726.524533e-08
0.491221.8261856.419394e-08
0.4935051.8255086.313767e-08
0.49581.8248386.207648e-08
0.4981071.8241776.101035e-08
0.51.8236436.013500e-08
0.5004231.8235255.988614e-08
0.5027511.822885.851795e-08
0.5050891.8222445.714341e-08
0.5074391.8216155.576247e-08
0.5097991.8209955.437510e-08
0.512171.8203825.298128e-08
0.5145531.8197765.158098e-08
0.5169461.8191785.017417e-08
0.519351.8185874.876081e-08
0.5217661.8180034.734088e-08
0.5241931.8174274.591435e-08
0.5266311.8168574.448118e-08
0.5290811.8162944.304134e-08
0.5315421.8157384.159480e-08
0.5340141.8151884.014154e-08
0.5364981.8146453.868152e-08
0.5389931.8141083.721471e-08
0.54151.8135783.574107e-08
0.5440191.8130533.426058e-08
0.5465491.8125353.277320e-08
0.5490921.8120233.127891e-08
0.551.8118423.074500e-08
0.5516461.8115173.052079e-08
0.5542121.8110163.017121e-08
0.5567891.8105222.982001e-08
0.5593791.8100332.946718e-08
0.5619811.8095492.911270e-08
0.5645951.8090722.875657e-08
0.5672211.8085992.839879e-08
0.5698591.8081322.803935e-08
0.572511.807672.767823e-08
0.5751731.8072132.731543e-08
0.5778481.8067612.695094e-08
0.5805361.8063152.658476e-08
0.5832361.8058732.621688e-08
0.5859491.8054362.584728e-08
0.5886751.8050042.547597e-08
0.5914131.8045772.510293e-08
0.5941641.8041552.472815e-08
0.5969271.8037372.435163e-08
0.5997041.8033232.397336e-08
0.61.8032792.393300e-08
0.6024931.8029142.403248e-08
0.6052961.802512.414429e-08
0.6081111.8021092.425663e-08
0.610941.8017142.436949e-08
0.6137811.8013222.448287e-08
0.6166361.8009342.459678e-08
0.6195041.8005512.471122e-08
0.6223861.8001722.482619e-08
0.6252811.7997962.494170e-08
0.6281891.7994252.505775e-08
0.6311111.7990572.517433e-08
0.6340471.7986942.529146e-08
0.6369961.7983342.540913e-08
0.6399591.7979782.552735e-08
0.6429351.7976252.564612e-08
0.6459261.7972762.576544e-08
0.648931.7969312.588531e-08
0.651.7968092.592800e-08
0.6519491.7965892.578763e-08
0.6549811.7962512.556917e-08
0.6580281.7959162.534970e-08
0.6610881.7955852.512921e-08
0.6641631.7952572.490769e-08
0.6672521.7949322.468514e-08
0.6703561.794612.446155e-08
0.6734741.7942922.423693e-08
0.6766071.7939772.401126e-08
0.6797541.7936652.378454e-08
0.6829151.7933562.355677e-08
0.6860921.793052.332794e-08
0.6892831.7927472.309804e-08
0.6924891.7924472.286707e-08
0.695711.792152.263503e-08
0.6989461.7918562.240191e-08
0.71.7917612.232600e-08
0.7021971.7915652.239609e-08
0.7054631.7912762.250028e-08
0.7087451.7909912.260496e-08
0.7120411.7907082.271012e-08
0.7153531.7904272.281577e-08
0.7186811.790152.292191e-08
0.7220231.7898752.302855e-08
0.7253821.7896022.313568e-08
0.7287561.7893332.324331e-08
0.7321461.7890652.335144e-08
0.7355511.7888012.346008e-08
0.7389721.7885382.356922e-08
0.7424091.7882782.367886e-08
0.7458631.7880212.378902e-08
0.7493321.7877662.389969e-08
0.7528171.7875132.401087e-08
0.7563191.7872622.412257e-08
0.7598371.7870142.423479e-08
0.7633711.7867682.434754e-08
0.7669221.7865242.446080e-08
0.7704891.7862832.457460e-08
0.7740731.7860432.468892e-08
0.7776731.7858062.480378e-08
0.781291.7855712.491916e-08
0.7849241.7853372.503509e-08
0.7885751.7851062.515156e-08
0.7922431.7848772.526856e-08
0.7959281.784652.538611e-08
0.799631.7844252.550421e-08
0.81.7844032.551600e-08
0.803351.7842022.471379e-08
0.8070861.783982.381894e-08
0.810841.7837612.291993e-08
0.8146121.7835432.201673e-08
0.8184011.7833282.110933e-08
0.8222081.7831142.019772e-08
0.8260321.7829021.928186e-08
0.8298741.7826911.836174e-08
0.8337341.7824831.743734e-08
0.8376121.7822761.650865e-08
0.8415081.7820711.557563e-08
0.8454221.7818671.463827e-08
0.8493551.7816651.369656e-08
0.851.7816321.354200e-08
0.8533051.7814651.359462e-08
0.8572741.7812661.365781e-08
0.8612621.7810691.372129e-08
0.8652681.7808731.378506e-08
0.8692921.7806791.384913e-08
0.8733361.7804871.391350e-08
0.8773981.7802961.397817e-08
0.8814791.7801061.404315e-08
0.8855791.7799181.410842e-08
0.8896981.7797311.417399e-08
0.8938361.7795461.423988e-08
0.8979941.7793621.430606e-08
0.91.7792741.433800e-08
0.9021711.779181.437260e-08
0.9063671.7789991.443949e-08
0.9105831.7788191.450669e-08
0.9148181.778641.457420e-08
0.9190731.7784631.464203e-08
0.9233481.7782871.471017e-08
0.9276431.7781131.477863e-08
0.9319581.7779391.484741e-08
0.9362931.7777671.491651e-08
0.9406481.7775961.498593e-08
0.9450231.7774261.505567e-08
0.9494191.7772571.512573e-08
0.951.7772351.513500e-08
0.9538351.777091.519605e-08
0.9582711.7769231.526668e-08
0.9627291.7767581.533764e-08
0.9672071.7765941.540893e-08
0.9717051.7764311.548055e-08
0.9762251.7762691.555250e-08
0.9807661.7761081.562479e-08
0.9853281.7759481.569742e-08
0.9899111.7757891.577038e-08
0.9945151.7756311.584368e-08
0.9991411.7754741.591732e-08
11.7754451.593100e-08
1.003791.7753181.599136e-08
1.008461.7751631.606575e-08
1.013151.7750091.614049e-08
1.017861.7748551.621558e-08
1.022591.7747031.629101e-08
1.027351.7745521.636680e-08
1.032131.7744011.644293e-08
1.036931.7742511.651943e-08
1.041751.7741021.659628e-08
1.04661.7739541.667348e-08
1.051471.7738071.675105e-08
1.056361.7736611.682897e-08
1.061.7735521.688700e-08
1.061271.7735151.690726e-08
1.066211.773371.698593e-08
1.071171.7732261.706496e-08
1.076151.7730821.714435e-08
1.081151.772941.722412e-08
1.086181.7727981.730426e-08
1.091241.7726561.738477e-08
1.096311.7725161.746565e-08
1.101411.7723761.754691e-08
1.106531.7722361.762855e-08
1.111681.7720981.771057e-08
1.116851.771961.779297e-08
1.122051.7718221.787576e-08
1.127271.7716851.795892e-08
1.132511.7715491.804248e-08
1.137781.7714141.812642e-08
1.143071.7712781.821076e-08
1.148391.7711441.829549e-08
1.153731.771011.838061e-08
1.159091.7708761.846612e-08
1.164481.7707431.855204e-08
1.16991.7706111.863835e-08
1.175341.7704791.872507e-08
1.180811.7703471.881219e-08
1.18631.7702161.889971e-08
1.191821.7700851.898764e-08
1.197361.7699551.907598e-08
1.21.7698931.911800e-08
1.202931.7698251.949243e-08
1.208531.7696962.020680e-08
1.214151.7695672.092450e-08
1.21981.7694382.164553e-08
1.225471.769312.236991e-08
1.231171.7691822.309767e-08
1.23691.7690542.382881e-08
1.242651.7689272.456335e-08
1.248431.76882.530131e-08
1.254241.7686732.604270e-08
1.260071.7685472.678754e-08
1.265931.7684212.753585e-08
1.271821.7682952.828763e-08
1.277741.7681692.904291e-08
1.283681.7680442.980171e-08
1.289651.7679193.056403e-08
1.295651.7677943.132990e-08
1.301671.7676693.209933e-08
1.307731.7675453.287234e-08
1.313811.7674213.364895e-08
1.319921.7672973.442917e-08
1.326061.7671733.521302e-08
1.332231.7670493.600051e-08
1.338431.7669253.679167e-08
1.344651.7668023.758650e-08
1.350911.7666783.838504e-08
1.357191.7665553.918728e-08
1.36351.7664323.999326e-08
1.369851.7663094.080299e-08
1.376221.7661864.161648e-08
1.382621.7660634.243376e-08
1.389051.765944.325484e-08
1.395511.7658174.407974e-08
1.41.7657324.465300e-08
1.4021.7656944.522946e-08
1.408521.7655714.710811e-08
1.415071.7654484.899550e-08
1.421661.7653255.089166e-08
1.428271.7652025.279665e-08
1.434911.7650795.471050e-08
1.441591.7649565.663325e-08
1.448291.7648335.856495e-08
1.455031.764716.050562e-08
1.46181.7645876.245533e-08
1.468591.7644646.441410e-08
1.475431.764346.638199e-08
1.482291.7642176.835903e-08
1.489181.7640937.034526e-08
1.496111.7639697.234074e-08
1.503071.7638457.434549e-08
1.510061.7637217.635957e-08
1.517081.7635977.838302e-08
1.524141.7634728.041588e-08
1.531231.7633478.245819e-08
1.538351.7632228.451001e-08
1.545511.7630978.657136e-08
1.55271.7629728.864231e-08
1.559921.7628469.072289e-08
1.567171.762729.281314e-08
1.574461.7625949.491312e-08
1.581791.7624689.702287e-08
1.589141.7623419.914243e-08
1.596541.7622141.012718e-07
1.61.7621551.022700e-07
1.603961.7620871.080096e-07
1.611421.7619591.188196e-07
1.618921.7618311.296798e-07
1.626451.7617031.405906e-07
1.634011.7615741.515521e-07
1.641611.7614451.625646e-07
1.649251.7613151.736283e-07
1.656921.7611851.847435e-07
1.664631.7610551.959104e-07
1.672371.7609242.071292e-07
1.680151.7607932.184002e-07
1.687961.7606612.297237e-07
1.695811.7605292.410998e-07
1.70371.7603962.525288e-07
1.711631.7602632.640110e-07
1.719591.7601292.755465e-07
1.727591.7599952.871358e-07
1.735621.759862.987789e-07
1.743691.7597253.104762e-07
1.751811.7595893.222279e-07
1.759951.7594533.340343e-07
1.768141.7593163.458956e-07
1.776361.7591783.578120e-07
1.784631.759043.697839e-07
1.792931.7589013.818115e-07
1.81.7587833.920600e-07
1.801271.7587623.944290e-07
1.809641.7586224.101014e-07
1.818061.7584814.258467e-07
1.826521.758344.416653e-07
1.835011.7581984.575574e-07
1.843551.7580554.735235e-07
1.852121.7579114.895638e-07
1.860741.7577675.056787e-07
1.869391.7576225.218686e-07
1.878091.7574765.381338e-07
1.886821.7573295.544746e-07
1.89561.7571825.708915e-07
1.904421.7570345.873847e-07
1.913281.7568856.039546e-07
1.922181.7567356.206016e-07
1.931121.7565846.373260e-07
1.94011.7564326.541282e-07
1.949121.756286.710086e-07
1.958191.7561276.879675e-07
1.96731.7559727.050052e-07
1.976451.7558177.221222e-07
1.985641.7556617.393189e-07
1.994881.7555047.565955e-07
21.7554167.661800e-07
2.004161.7553467.817765e-07
2.013481.7551878.167675e-07
2.022841.7550268.519212e-07
2.032251.7548658.872385e-07
2.04171.7547039.227201e-07
2.05121.754549.583666e-07
2.060741.7543769.941790e-07
2.070331.754211.030158e-06
2.079961.7540441.066304e-06
2.089631.7538761.102619e-06
2.099351.7537071.139102e-06
2.109121.7535371.175755e-06
2.118931.7533661.212579e-06
2.128781.7531941.249574e-06
2.138681.7530211.286740e-06
2.148631.7528461.324080e-06
2.158621.752671.361594e-06
2.168671.7524931.399282e-06
2.178751.7523141.437145e-06
2.188891.7521341.475184e-06
2.199071.7519531.513400e-06
2.21.7519361.516900e-06
2.20931.751771.586496e-06
2.219571.7515871.663429e-06
2.22991.7514011.740719e-06
2.240271.7512151.818369e-06
2.250691.7510271.896380e-06
2.261161.7508371.974754e-06
2.271671.7506462.053493e-06
2.282241.7504542.132597e-06
2.292861.750262.212070e-06
2.303521.7500642.291912e-06
2.314241.7498672.372126e-06
2.3251.7496692.452712e-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
—