Optical constants

Refractive index of D-ZLAF52LA (CDGM)

D-ZLAF52LA: 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
1.81
Extinction coefficient k
2.34385e-08
Permittivity ε1
3.27609
Permittivity ε2
8.48472e-08
Absorption coefficient α
0.00501254 cm⁻¹
Penetration depth δ = λ/(2πk)
3.98999e+09 nm
Abbe number Vd
40.993
Chromatic dispersion dn/dλ
-0.100798 µm⁻¹
Group index ng
1.86923
Group velocity dispersion
190.254 fs²/mm
Dispersion parameter D
-1037.94 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

# D-ZLAF52LA (CDGM): D-ZLAF52LA
cdgm_d_zlaf52la = ls.fetch_refractiveindex("specs", "CDGM-optical", "D-ZLAF52LA", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_d_zlaf52la.range_nm)  # (365, 2325) nm
eps = cdgm_d_zlaf52la.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=1.88205933λ2λ2−0.00984915169+0.302908859λ2λ2−0.0406191391+1.2538738λ2λ2−95.893604

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.88205933
C30.00984915169
C40.302908859
C50.0406191391
C61.2538738
C795.893604

Comments and conditions

anneal rate:4°C/h

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 5.23e-06 1.56e-08 -3.55e-11 8.33e-07 7.37e-10 0.217
nd
1.810000
Vd
40.992863
glass code
810410
density
value: 4560
thermal expansion
value: 6.6e-06, temperature range: 243 343; value: 8.3e-06, temperature range: 293 573
dPgF
-0.006
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 4.75e-06 K⁻¹ at 633 nm, dn/dT = 3.50e-06 K⁻¹ at 1310 nm, dn/dT = 3.40e-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
D-ZLAF52LA (CDGM), D-ZLAF52LA: n and k versus wavelength
λ (µm)nk
0.3651.8618099.862750e-07
0.3666981.860938.870508e-07
0.3684031.8600637.873652e-07
0.371.8592656.940500e-07
0.3701171.8592076.908585e-07
0.3718381.8583636.438726e-07
0.3735681.8575315.966682e-07
0.3753061.8567095.492442e-07
0.3770511.8558995.015996e-07
0.3788051.8550994.537334e-07
0.381.8545624.211200e-07
0.3805671.854314.132590e-07
0.3823371.8535313.887177e-07
0.3841161.8527623.640623e-07
0.3859021.8520033.392922e-07
0.3876971.8512543.144069e-07
0.38951.8505142.894059e-07
0.391.8503122.824800e-07
0.3913121.8497842.725930e-07
0.3931321.8490642.588784e-07
0.3949611.8483522.451000e-07
0.3967981.847652.312575e-07
0.3986441.8469562.173506e-07
0.41.8464542.071300e-07
0.4004981.8462712.052839e-07
0.4023611.8455941.983755e-07
0.4042321.8449261.914350e-07
0.4061121.8442661.844622e-07
0.4080011.8436151.774570e-07
0.4098991.8429711.704192e-07
0.4118061.8423351.633487e-07
0.4137211.8417071.562453e-07
0.4156451.8410871.491088e-07
0.4175791.8404741.419391e-07
0.4195211.8398681.347361e-07
0.421.839721.329600e-07
0.4214721.839271.304921e-07
0.4234331.8386791.272063e-07
0.4254021.8380951.239052e-07
0.4273811.8375171.205887e-07
0.4293691.8369471.172568e-07
0.4313661.8363831.139094e-07
0.4333721.8358261.105464e-07
0.4353881.8352761.071678e-07
0.4374131.8347321.037735e-07
0.4394481.8341941.003633e-07
0.441.834059.943800e-08
0.4414921.8336639.753690e-08
0.4435451.8331379.492020e-08
0.4456091.8326189.229132e-08
0.4476811.8321058.965022e-08
0.4497641.8315978.699683e-08
0.4518561.8310968.433110e-08
0.4539571.83068.165298e-08
0.4560691.8301097.896239e-08
0.458191.8296257.625929e-08
0.461.8292177.395300e-08
0.4603211.8291457.369240e-08
0.4624621.8286717.195564e-08
0.4646131.8282037.021080e-08
0.4667751.8277396.845785e-08
0.4689461.8272816.669675e-08
0.4711271.8268286.492745e-08
0.4733181.826386.314992e-08
0.475521.8259366.136413e-08
0.4777321.8254985.957002e-08
0.4799541.8250645.776758e-08
0.481.8250565.773000e-08
0.4821861.8246365.579082e-08
0.4844291.8242125.380134e-08
0.4866821.8237925.180261e-08
0.4889461.8233774.979457e-08
0.491221.8229664.777720e-08
0.4935051.822564.575045e-08
0.49581.8221594.371426e-08
0.4981071.8217614.166861e-08
0.51.8214393.998900e-08
0.5004231.8213683.983616e-08
0.5027511.8209793.899588e-08
0.5050891.8205943.815170e-08
0.5074391.8202133.730359e-08
0.5097991.8198373.645153e-08
0.512171.8194643.559551e-08
0.5145531.8190953.473551e-08
0.5169461.818733.387151e-08
0.519351.8183693.300349e-08
0.5217661.8180113.213144e-08
0.5241931.8176573.125532e-08
0.5266311.8173073.037513e-08
0.5290811.8169612.949085e-08
0.5315421.8166182.860246e-08
0.5340141.8162792.770993e-08
0.5364981.8159432.681325e-08
0.5389931.815612.591240e-08
0.54151.8152812.500736e-08
0.5440191.8149552.409811e-08
0.5465491.8146332.318463e-08
0.5490921.8143132.226690e-08
0.551.8142012.193900e-08
0.5516461.8139972.200463e-08
0.5542121.8136852.210696e-08
0.5567891.8133752.220976e-08
0.5593791.8130682.231304e-08
0.5619811.8127652.241680e-08
0.5645951.8124642.252105e-08
0.5672211.8121672.262578e-08
0.5698591.8118722.273100e-08
0.572511.811582.283670e-08
0.5751731.8112912.294290e-08
0.5778481.8110052.304959e-08
0.5805361.8107222.315678e-08
0.5832361.8104412.326447e-08
0.5859491.8101642.337265e-08
0.5886751.8098882.348134e-08
0.5914131.8096162.359054e-08
0.5941641.8093462.370024e-08
0.5969271.8090792.381046e-08
0.5997041.8088142.392119e-08
0.61.8087862.393300e-08
0.6024931.8085522.377339e-08
0.6052961.8082922.359398e-08
0.6081111.8080352.341373e-08
0.610941.807782.323265e-08
0.6137811.8075272.305073e-08
0.6166361.8072772.286796e-08
0.6195041.8070292.268434e-08
0.6223861.8067842.249986e-08
0.6252811.8065412.231453e-08
0.6281891.80632.212833e-08
0.6311111.8060612.194127e-08
0.6340471.8058252.175334e-08
0.6369961.805592.156454e-08
0.6399591.8053582.137485e-08
0.6429351.8051282.118429e-08
0.6459261.80492.099283e-08
0.648931.8046742.080049e-08
0.651.8045942.073200e-08
0.6519491.804452.057627e-08
0.6549811.8042282.033392e-08
0.6580281.8040082.009044e-08
0.6610881.803791.984583e-08
0.6641631.8035741.960008e-08
0.6672521.8033591.935319e-08
0.6703561.8031471.910515e-08
0.6734741.8029371.885595e-08
0.6766071.8027281.860560e-08
0.6797541.8025211.835408e-08
0.6829151.8023161.810139e-08
0.6860921.8021131.784753e-08
0.6892831.8019111.759249e-08
0.6924891.8017111.733626e-08
0.695711.8015131.707884e-08
0.6989461.8013171.682022e-08
0.71.8012531.673600e-08
0.7021971.8011221.664831e-08
0.7054631.8009291.651795e-08
0.7087451.8007371.638700e-08
0.7120411.8005471.625543e-08
0.7153531.8003591.612325e-08
0.7186811.8001721.599045e-08
0.7220231.7999871.585704e-08
0.7253821.7998031.572301e-08
0.7287561.7996211.558835e-08
0.7321461.799441.545307e-08
0.7355511.799261.531716e-08
0.7389721.7990821.518062e-08
0.7424091.7989061.504344e-08
0.7458631.7987311.490562e-08
0.7493321.7985571.476716e-08
0.7528171.7983841.462806e-08
0.7563191.7982131.448831e-08
0.7598371.7980441.434791e-08
0.7633711.7978751.420686e-08
0.7669221.7977081.406515e-08
0.7704891.7975421.392279e-08
0.7740731.7973771.377976e-08
0.7776731.7972141.363606e-08
0.781291.7970521.349170e-08
0.7849241.7968911.334666e-08
0.7885751.7967311.320096e-08
0.7922431.7965721.305457e-08
0.7959281.7964151.290750e-08
0.799631.7962581.275975e-08
0.81.7962431.274500e-08
0.803351.7961031.279840e-08
0.8070861.7959491.285796e-08
0.810841.7957961.291780e-08
0.8146121.7956441.297791e-08
0.8184011.7954931.303831e-08
0.8222081.7953431.309899e-08
0.8260321.7951941.315995e-08
0.8298741.7950461.322119e-08
0.8337341.7948991.328272e-08
0.8376121.7947531.334454e-08
0.8415081.7946081.340664e-08
0.8454221.7944641.346903e-08
0.8493551.7943211.353171e-08
0.851.7942981.354200e-08
0.8533051.7941791.359462e-08
0.8572741.7940381.365781e-08
0.8612621.7938971.372129e-08
0.8652681.7937581.378506e-08
0.8692921.7936191.384913e-08
0.8733361.7934811.391350e-08
0.8773981.7933451.397817e-08
0.8814791.7932081.404315e-08
0.8855791.7930731.410842e-08
0.8896981.7929391.417399e-08
0.8938361.7928051.423988e-08
0.8979941.7926721.430606e-08
0.91.7926081.433800e-08
0.9021711.792541.437260e-08
0.9063671.7924091.443949e-08
0.9105831.7922781.450669e-08
0.9148181.7921481.457420e-08
0.9190731.7920191.464203e-08
0.9233481.791891.471017e-08
0.9276431.7917621.477863e-08
0.9319581.7916351.484741e-08
0.9362931.7915081.491651e-08
0.9406481.7913821.498593e-08
0.9450231.7912571.505567e-08
0.9494191.7911321.512573e-08
0.951.7911161.513500e-08
0.9538351.7910081.519605e-08
0.9582711.7908851.526668e-08
0.9627291.7907621.533764e-08
0.9672071.790641.540893e-08
0.9717051.7905181.548055e-08
0.9762251.7903971.555250e-08
0.9807661.7902761.562479e-08
0.9853281.7901561.569742e-08
0.9899111.7900361.577038e-08
0.9945151.7899171.584368e-08
0.9991411.7897991.591732e-08
11.7897771.593100e-08
1.003791.789681.599136e-08
1.008461.7895631.606575e-08
1.013151.7894461.614049e-08
1.017861.7893291.621558e-08
1.022591.7892121.629101e-08
1.027351.7890961.636680e-08
1.032131.7889811.644293e-08
1.036931.7888661.651943e-08
1.041751.7887511.659628e-08
1.04661.7886371.667348e-08
1.051471.7885231.675105e-08
1.056361.7884091.682897e-08
1.061.7883251.688700e-08
1.061271.7882961.690726e-08
1.066211.7881831.698593e-08
1.071171.788071.706496e-08
1.076151.7879581.714435e-08
1.081151.7878461.722412e-08
1.086181.7877341.730426e-08
1.091241.7876231.738477e-08
1.096311.7875121.746565e-08
1.101411.7874011.754691e-08
1.106531.787291.762855e-08
1.111681.787181.771057e-08
1.116851.787071.779297e-08
1.122051.786961.787576e-08
1.127271.786851.795892e-08
1.132511.7867411.804248e-08
1.137781.7866311.812642e-08
1.143071.7865221.821076e-08
1.148391.7864131.829549e-08
1.153731.7863041.838061e-08
1.159091.7861951.846612e-08
1.164481.7860871.855204e-08
1.16991.7859781.863835e-08
1.175341.785871.872507e-08
1.180811.7857621.881219e-08
1.18631.7856541.889971e-08
1.191821.7855461.898764e-08
1.197361.7854381.907598e-08
1.21.7853871.911800e-08
1.202931.785331.949243e-08
1.208531.7852222.020680e-08
1.214151.7851142.092450e-08
1.21981.7850072.164553e-08
1.225471.7848992.236991e-08
1.231171.7847912.309767e-08
1.23691.7846842.382881e-08
1.242651.7845762.456335e-08
1.248431.7844682.530131e-08
1.254241.784362.604270e-08
1.260071.7842532.678754e-08
1.265931.7841452.753585e-08
1.271821.7840372.828763e-08
1.277741.7839292.904291e-08
1.283681.7838212.980171e-08
1.289651.7837133.056403e-08
1.295651.7836053.132990e-08
1.301671.7834963.209933e-08
1.307731.7833883.287234e-08
1.313811.7832793.364895e-08
1.319921.7831713.442917e-08
1.326061.7830623.521302e-08
1.332231.7829533.600051e-08
1.338431.7828443.679167e-08
1.344651.7827343.758650e-08
1.350911.7826253.838504e-08
1.357191.7825153.918728e-08
1.36351.7824053.999326e-08
1.369851.7822954.080299e-08
1.376221.7821844.161648e-08
1.382621.7820744.243376e-08
1.389051.7819634.325484e-08
1.395511.7818524.407974e-08
1.41.7817754.465300e-08
1.4021.781744.446128e-08
1.408521.7816294.383645e-08
1.415071.7815174.320872e-08
1.421661.7814044.257807e-08
1.428271.7812924.194448e-08
1.434911.7811794.130795e-08
1.441591.7810654.066845e-08
1.448291.7809524.002599e-08
1.455031.7808383.938053e-08
1.46181.7807233.873207e-08
1.468591.7806083.808060e-08
1.475431.7804933.742609e-08
1.482291.7803783.676855e-08
1.489181.7802623.610794e-08
1.496111.7801453.544426e-08
1.503071.7800283.477749e-08
1.510061.7799113.410762e-08
1.517081.7797933.343464e-08
1.524141.7796753.275852e-08
1.531231.7795563.207927e-08
1.538351.7794373.139685e-08
1.545511.7793173.071125e-08
1.55271.7791973.002247e-08
1.559921.7790762.933049e-08
1.567171.7789552.863528e-08
1.574461.7788332.793684e-08
1.581791.7787112.723516e-08
1.589141.7785882.653021e-08
1.596541.7784642.582198e-08
1.61.7784062.549000e-08
1.603961.778342.726384e-08
1.611421.7782153.060467e-08
1.618921.778093.396105e-08
1.626451.7779643.733304e-08
1.634011.7778374.072071e-08
1.641611.7777094.412413e-08
1.649251.7775814.754339e-08
1.656921.7774535.097856e-08
1.664631.7773235.442970e-08
1.672371.7771935.789689e-08
1.680151.7770626.138021e-08
1.687961.776936.487973e-08
1.695811.7767986.839553e-08
1.70371.7766657.192769e-08
1.711631.7765317.547627e-08
1.719591.7763967.904136e-08
1.727591.776268.262303e-08
1.735621.7761248.622136e-08
1.743691.7759878.983642e-08
1.751811.7758489.346830e-08
1.759951.7757099.711708e-08
1.768141.775571.007828e-07
1.776361.7754291.044656e-07
1.784631.7752871.081655e-07
1.792931.7751451.118827e-07
1.81.7750231.150500e-07
1.801271.7750011.174951e-07
1.809641.7748561.336711e-07
1.818061.7747111.499223e-07
1.826521.7745651.662490e-07
1.835011.7744171.826518e-07
1.843551.7742691.991308e-07
1.852121.7741192.156865e-07
1.860741.7739692.323191e-07
1.869391.7738172.490292e-07
1.878091.7736642.658169e-07
1.886821.7735112.826828e-07
1.89561.7733562.996271e-07
1.904421.77323.166502e-07
1.913281.7730423.337525e-07
1.922181.7728843.509343e-07
1.931121.7727253.681961e-07
1.94011.7725643.855381e-07
1.949121.7724024.029608e-07
1.958191.7722394.204646e-07
1.96731.7720754.380498e-07
1.976451.7719094.557167e-07
1.985641.7717424.734659e-07
1.994881.7715744.912976e-07
21.771485.011900e-07
2.004161.7714045.195265e-07
2.013481.7712335.606649e-07
2.022841.7710616.019947e-07
2.032251.7708876.435166e-07
2.04171.7707126.852317e-07
2.05121.7705367.271409e-07
2.060741.7703587.692450e-07
2.070331.7701798.115449e-07
2.079961.7699988.540416e-07
2.089631.7698168.967359e-07
2.099351.7696329.396288e-07
2.109121.7694479.827212e-07
2.118931.769261.026014e-06
2.128781.7690711.069508e-06
2.138681.7688811.113205e-06
2.148631.7686891.157105e-06
2.158621.7684961.201209e-06
2.168671.7683011.245518e-06
2.178751.7681041.290033e-06
2.188891.7679061.334755e-06
2.199071.7677061.379686e-06
2.21.7676881.383800e-06
2.20931.7675041.574861e-06
2.219571.76731.786062e-06
2.22991.7670951.998246e-06
2.240271.7668882.211416e-06
2.250691.7666792.425578e-06
2.261161.7664682.640735e-06
2.271671.7662552.856894e-06
2.282241.766043.074058e-06
2.292861.7658233.292232e-06
2.303521.7656043.511421e-06
2.314241.7653833.731630e-06
2.3251.7651613.952862e-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
—