Optical constants

Refractive index of H-ZLAF2A (CDGM)

H-ZLAF2A: 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
1.80279
Extinction coefficient k
1.51379e-08
Permittivity ε1
3.25004
Permittivity ε2
5.45807e-08
Absorption coefficient α
0.00323737 cm⁻¹
Penetration depth δ = λ/(2πk)
6.17785e+09 nm
Abbe number Vd
46.761
Chromatic dispersion dn/dλ
-0.0880922 µm⁻¹
Group index ng
1.85455
Group velocity dispersion
160.845 fs²/mm
Dispersion parameter D
-877.494 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-ZLAF2A (CDGM): H-ZLAF2A
cdgm_h_zlaf2a = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZLAF2A", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zlaf2a.range_nm)  # (365, 2325) nm
eps = cdgm_h_zlaf2a.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=1.76389273λ2λ2−0.00842148915+0.407585264λ2λ2−0.0304194282+1.27020239λ2λ2−89.5802552

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.76389273
C30.00842148915
C40.407585264
C50.0304194282
C61.27020239
C789.5802552

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 1.27e-06 1.49e-08 -3.26e-11 6.27e-07 5.37e-10 0.2
nd
1.802790
Vd
46.761307
glass code
803468
density
value: 4650
thermal expansion
value: 5.8e-06, temperature range: 243 343; value: 7.8e-06, temperature range: 293 573
dPgF
-0.0089

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.87e-06 K⁻¹ at 633 nm, dn/dT = 1.00e-06 K⁻¹ at 1310 nm, dn/dT = 9.29e-07 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-ZLAF2A (CDGM), H-ZLAF2A: n and k versus wavelength
λ (µm)nk
0.3651.8464056.140400e-07
0.3666981.8456935.645001e-07
0.3684031.8449895.147297e-07
0.371.8443414.681400e-07
0.3701171.8442944.661175e-07
0.3718381.8436074.363418e-07
0.3735681.8429284.064276e-07
0.3753061.8422583.763743e-07
0.3770511.8415963.461812e-07
0.3788051.8409413.158477e-07
0.381.8405022.951800e-07
0.3805671.8402952.898938e-07
0.3823371.8396562.733907e-07
0.3841161.8390252.568109e-07
0.3859021.8384012.401540e-07
0.3876971.8377852.234196e-07
0.38951.8371752.066074e-07
0.391.8370082.019500e-07
0.3913121.8365731.942451e-07
0.3931321.8359781.835574e-07
0.3949611.835391.728199e-07
0.3967981.8348091.620325e-07
0.3986441.8342341.511949e-07
0.41.8338171.432300e-07
0.4004981.8336661.418565e-07
0.4023611.8331041.367167e-07
0.4042321.8325491.315530e-07
0.4061121.8320011.263653e-07
0.4080011.8314581.211535e-07
0.4098991.8309221.159174e-07
0.4118061.8303911.106570e-07
0.4137211.8298671.053721e-07
0.4156451.8293491.000626e-07
0.4175791.8288369.472842e-08
0.4195211.8283298.936943e-08
0.421.8282068.804800e-08
0.4214721.8278288.651074e-08
0.4234331.8273338.446398e-08
0.4254021.8268438.240770e-08
0.4273811.8263588.034185e-08
0.4293691.8258797.826639e-08
0.4313661.8254047.618128e-08
0.4333721.8249367.408647e-08
0.4353881.8244727.198192e-08
0.4374131.8240136.986758e-08
0.4394481.823566.774340e-08
0.441.8234386.716700e-08
0.4414921.8231116.517691e-08
0.4435451.8226676.243771e-08
0.4456091.8222285.968577e-08
0.4476811.8217945.692104e-08
0.4497641.8213645.414344e-08
0.4518561.8209395.135292e-08
0.4539571.8205184.854943e-08
0.4560691.8201024.573289e-08
0.458191.819694.290325e-08
0.461.8193444.048900e-08
0.4603211.8192834.026962e-08
0.4624621.818883.880756e-08
0.4646131.8184823.733871e-08
0.4667751.8180873.586302e-08
0.4689461.8176973.438047e-08
0.4711271.817313.289102e-08
0.4733181.8169283.139465e-08
0.475521.816552.989131e-08
0.4777321.8161762.838099e-08
0.4799541.8158052.686363e-08
0.481.8157972.683200e-08
0.4821861.8154382.564222e-08
0.4844291.8150762.442157e-08
0.4866821.8147172.319524e-08
0.4889461.8143612.196322e-08
0.491221.8140092.072546e-08
0.4935051.8136611.948194e-08
0.49581.8133161.823264e-08
0.4981071.8129751.697753e-08
0.51.8126991.594700e-08
0.5004231.8126381.596051e-08
0.5027511.8123031.603476e-08
0.5050891.8119721.610935e-08
0.5074391.8116451.618430e-08
0.5097991.8113211.625959e-08
0.512171.8109991.633523e-08
0.5145531.8106821.641123e-08
0.5169461.8103671.648758e-08
0.519351.8100551.656428e-08
0.5217661.8097471.664134e-08
0.5241931.8094411.671876e-08
0.5266311.8091391.679654e-08
0.5290811.808841.687468e-08
0.5315421.8085431.695318e-08
0.5340141.8082491.703205e-08
0.5364981.8079591.711128e-08
0.5389931.8076711.719089e-08
0.54151.8073851.727086e-08
0.5440191.8071031.735121e-08
0.5465491.8068231.743193e-08
0.5490921.8065461.751302e-08
0.551.8064481.754200e-08
0.5516461.8062721.743677e-08
0.5542121.8061.727271e-08
0.5567891.8057311.710789e-08
0.5593791.8054651.694229e-08
0.5619811.8052011.677593e-08
0.5645951.8049391.660879e-08
0.5672211.804681.644088e-08
0.5698591.8044231.627219e-08
0.572511.8041691.610271e-08
0.5751731.8039171.593244e-08
0.5778481.8036681.576138e-08
0.5805361.803421.558952e-08
0.5832361.8031751.541687e-08
0.5859491.8029331.524341e-08
0.5886751.8026921.506914e-08
0.5914131.8024541.489407e-08
0.5941641.8022181.471818e-08
0.5969271.8019841.454147e-08
0.5997041.8017521.436394e-08
0.61.8017281.434500e-08
0.6024931.8015231.440464e-08
0.6052961.8012951.447167e-08
0.6081111.8010691.453902e-08
0.610941.8008461.460667e-08
0.6137811.8006241.467465e-08
0.6166361.8004051.474294e-08
0.6195041.8001871.481154e-08
0.6223861.7999711.488047e-08
0.6252811.7997571.494972e-08
0.6281891.7995461.501928e-08
0.6311111.7993351.508918e-08
0.6340471.7991271.515939e-08
0.6369961.7989211.522994e-08
0.6399591.7987161.530081e-08
0.6429351.7985131.537201e-08
0.6459261.7983121.544354e-08
0.648931.7981121.551541e-08
0.651.7980421.554100e-08
0.6519491.7979151.558757e-08
0.6549811.7977191.566005e-08
0.6580281.7975241.573286e-08
0.6610881.7973311.580601e-08
0.6641631.797141.587950e-08
0.6672521.796951.595333e-08
0.6703561.7967621.602751e-08
0.6734741.7965761.610203e-08
0.6766071.7963911.617690e-08
0.6797541.7962071.625211e-08
0.6829151.7960251.632768e-08
0.6860921.7958451.640360e-08
0.6892831.7956661.647987e-08
0.6924891.7954881.655649e-08
0.695711.7953121.663348e-08
0.6989461.7951371.671082e-08
0.71.7950811.673600e-08
0.7021971.7949641.678854e-08
0.7054631.7947921.686663e-08
0.7087451.7946211.694509e-08
0.7120411.7944521.702391e-08
0.7153531.7942841.710310e-08
0.7186811.7941171.718265e-08
0.7220231.7939511.726258e-08
0.7253821.7937871.734288e-08
0.7287561.7936241.742355e-08
0.7321461.7934621.750460e-08
0.7355511.7933021.758602e-08
0.7389721.7931421.766783e-08
0.7424091.7929841.775001e-08
0.7458631.7928271.783258e-08
0.7493321.7926711.791553e-08
0.7528171.7925161.799886e-08
0.7563191.7923631.808259e-08
0.7598371.792211.816670e-08
0.7633711.7920591.825120e-08
0.7669221.7919081.833610e-08
0.7704891.7917591.842139e-08
0.7740731.791611.850708e-08
0.7776731.7914631.859317e-08
0.781291.7913171.867965e-08
0.7849241.7911711.876654e-08
0.7885751.7910271.885384e-08
0.7922431.7908841.894154e-08
0.7959281.7907411.902965e-08
0.799631.79061.911816e-08
0.81.7905861.912700e-08
0.803351.7904591.920713e-08
0.8070861.7903191.929651e-08
0.810841.7901811.938630e-08
0.8146121.7900431.947652e-08
0.8184011.7899061.956715e-08
0.8222081.7897691.965821e-08
0.8260321.7896341.974969e-08
0.8298741.7894991.984159e-08
0.8337341.7893661.993392e-08
0.8376121.7892332.002668e-08
0.8415081.7891012.011987e-08
0.8454221.7889692.021350e-08
0.8493551.7888392.030756e-08
0.851.7888172.032300e-08
0.8533051.7887091.992736e-08
0.8572741.788581.945227e-08
0.8612621.7884511.897497e-08
0.8652681.7883231.849545e-08
0.8692921.7881961.801370e-08
0.8733361.788071.752971e-08
0.8773981.7879441.704347e-08
0.8814791.7878191.655497e-08
0.8855791.7876951.606419e-08
0.8896981.7875711.557113e-08
0.8938361.7874481.507578e-08
0.8979941.7873261.457812e-08
0.91.7872671.433800e-08
0.9021711.7872041.437260e-08
0.9063671.7870831.443949e-08
0.9105831.7869621.450669e-08
0.9148181.7868421.457420e-08
0.9190731.7867221.464203e-08
0.9233481.7866031.471017e-08
0.9276431.7864851.477863e-08
0.9319581.7863671.484741e-08
0.9362931.7862491.491651e-08
0.9406481.7861321.498593e-08
0.9450231.7860161.505567e-08
0.9494191.7858991.512573e-08
0.951.7858841.513500e-08
0.9538351.7857841.519605e-08
0.9582711.7856691.526668e-08
0.9627291.7855541.533764e-08
0.9672071.785441.540893e-08
0.9717051.7853261.548055e-08
0.9762251.7852131.555250e-08
0.9807661.78511.562479e-08
0.9853281.7849871.569742e-08
0.9899111.7848751.577038e-08
0.9945151.7847631.584368e-08
0.9991411.7846511.591732e-08
11.7846311.593100e-08
1.003791.784541.599136e-08
1.008461.7844291.606575e-08
1.013151.7843191.614049e-08
1.017861.7842091.621558e-08
1.022591.7840991.629101e-08
1.027351.7839891.636680e-08
1.032131.783881.644293e-08
1.036931.7837711.651943e-08
1.041751.7836621.659628e-08
1.04661.7835531.667348e-08
1.051471.7834451.675105e-08
1.056361.7833371.682897e-08
1.061.7832571.688700e-08
1.061271.7832291.690726e-08
1.066211.7831221.698593e-08
1.071171.7830141.706496e-08
1.076151.7829071.714435e-08
1.081151.78281.722412e-08
1.086181.7826931.730426e-08
1.091241.7825861.738477e-08
1.096311.782481.746565e-08
1.101411.7823731.754691e-08
1.106531.7822671.762855e-08
1.111681.7821611.771057e-08
1.116851.7820551.779297e-08
1.122051.7819491.787576e-08
1.127271.7818431.795892e-08
1.132511.7817371.804248e-08
1.137781.7816321.812642e-08
1.143071.7815261.821076e-08
1.148391.781421.829549e-08
1.153731.7813151.838061e-08
1.159091.7812091.846612e-08
1.164481.7811041.855204e-08
1.16991.7809981.863835e-08
1.175341.7808931.872507e-08
1.180811.7807871.881219e-08
1.18631.7806821.889971e-08
1.191821.7805761.898764e-08
1.197361.7804711.907598e-08
1.21.7804211.911800e-08
1.202931.7803651.932849e-08
1.208531.780261.973009e-08
1.214151.7801542.013356e-08
1.21981.7800482.053890e-08
1.225471.7799422.094613e-08
1.231171.7798362.135525e-08
1.23691.779732.176628e-08
1.242651.7796242.217921e-08
1.248431.7795182.259407e-08
1.254241.7794112.301086e-08
1.260071.7793052.342958e-08
1.265931.7791982.385026e-08
1.271821.7790912.427289e-08
1.277741.7789842.469748e-08
1.283681.7788762.512405e-08
1.289651.7787692.555261e-08
1.295651.7786612.598316e-08
1.301671.7785532.641571e-08
1.307731.7784452.685027e-08
1.313811.7783372.728686e-08
1.319921.7782282.772547e-08
1.326061.7781192.816613e-08
1.332231.778012.860883e-08
1.338431.7779012.905360e-08
1.344651.7777912.950043e-08
1.350911.7776812.994934e-08
1.357191.7775713.040034e-08
1.36351.777463.085344e-08
1.369851.7773493.130864e-08
1.376221.7772383.176596e-08
1.382621.7771263.222541e-08
1.389051.7770143.268700e-08
1.395511.7769013.315073e-08
1.41.7768233.347300e-08
1.4021.7767893.364868e-08
1.408521.7766753.422120e-08
1.415071.7765623.479639e-08
1.421661.7764483.537426e-08
1.428271.7763333.595481e-08
1.434911.7762193.653806e-08
1.441591.7761033.712403e-08
1.448291.7759873.771272e-08
1.455031.7758713.830415e-08
1.46181.7757543.889833e-08
1.468591.7756373.949527e-08
1.475431.7755194.009499e-08
1.482291.7754014.069750e-08
1.489181.7752824.130281e-08
1.496111.7751634.191094e-08
1.503071.7750434.252190e-08
1.510061.7749224.313570e-08
1.517081.7748014.375235e-08
1.524141.774684.437187e-08
1.531231.7745574.499428e-08
1.538351.7744354.561957e-08
1.545511.7743114.624778e-08
1.55271.7741874.687891e-08
1.559921.7740624.751297e-08
1.567171.7739374.814999e-08
1.574461.7738114.878996e-08
1.581791.7736844.943292e-08
1.589141.7735565.007886e-08
1.596541.7734285.072781e-08
1.61.7733685.103200e-08
1.603961.7732995.315934e-08
1.611421.7731695.716595e-08
1.618921.7730396.119121e-08
1.626451.7729086.523518e-08
1.634011.7727766.929796e-08
1.641611.7726437.337965e-08
1.649251.7725097.748031e-08
1.656921.7723758.160005e-08
1.664631.772248.573896e-08
1.672371.7721048.989711e-08
1.680151.7719679.407461e-08
1.687961.7718299.827153e-08
1.695811.771691.024880e-07
1.70371.7715511.067240e-07
1.711631.771411.109798e-07
1.719591.7712691.152554e-07
1.727591.7711261.195508e-07
1.735621.7709831.238662e-07
1.743691.7708391.282017e-07
1.751811.7706931.325574e-07
1.759951.7705471.369333e-07
1.768141.77041.413296e-07
1.776361.7702511.457463e-07
1.784631.7701021.501836e-07
1.792931.7699511.546415e-07
1.81.7698231.584400e-07
1.801271.76981.607144e-07
1.809641.7696471.757610e-07
1.818061.7694931.908775e-07
1.826521.7693382.060644e-07
1.835011.7691822.213219e-07
1.843551.7690252.366503e-07
1.852121.7688662.520501e-07
1.860741.7687072.675215e-07
1.869391.7685462.830649e-07
1.878091.7683842.986805e-07
1.886821.768223.143688e-07
1.89561.7680563.301301e-07
1.904421.767893.459646e-07
1.913281.7677233.618728e-07
1.922181.7675543.778551e-07
1.931121.7673843.939116e-07
1.94011.7672134.100429e-07
1.949121.767044.262491e-07
1.958191.7668664.425308e-07
1.96731.7666914.588882e-07
1.976451.7665144.753216e-07
1.985641.7663364.918315e-07
1.994881.7661565.084182e-07
21.7660565.176200e-07
2.004161.7659755.403706e-07
2.013481.7657925.914123e-07
2.022841.7656086.426913e-07
2.032251.7654226.942088e-07
2.04171.7652347.459660e-07
2.05121.7650457.979639e-07
2.060741.7648558.502036e-07
2.070331.7646629.026864e-07
2.079961.7644689.554132e-07
2.089631.7642731.008385e-06
2.099351.7640751.061604e-06
2.109121.7638761.115070e-06
2.118931.7636751.168785e-06
2.128781.7634721.222749e-06
2.138681.7632681.276965e-06
2.148631.7630621.331432e-06
2.158621.7628541.386154e-06
2.168671.7626441.441129e-06
2.178751.7624321.496361e-06
2.188891.7622181.551849e-06
2.199071.7620021.607595e-06
2.21.7619821.612700e-06
2.20931.7617841.845539e-06
2.219571.7615652.102921e-06
2.22991.7613432.361500e-06
2.240271.7611192.621282e-06
2.250691.7608932.882272e-06
2.261161.7606653.144476e-06
2.271671.7604353.407900e-06
2.282241.7602033.672549e-06
2.292861.7599683.938429e-06
2.303521.7597324.205546e-06
2.314241.7594934.473905e-06
2.3251.7592514.743513e-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
—