Optical constants

Refractive index of H-ZLAF55D (CDGM)

H-ZLAF55D: 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
1.83481
Extinction coefficient k
9.36134e-09
Permittivity ε1
3.36651
Permittivity ε2
3.43525e-08
Absorption coefficient α
0.00200201 cm⁻¹
Penetration depth δ = λ/(2πk)
9.98996e+09 nm
Abbe number Vd
42.725
Chromatic dispersion dn/dλ
-0.0999304 µm⁻¹
Group index ng
1.89353
Group velocity dispersion
186.171 fs²/mm
Dispersion parameter D
-1015.66 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-ZLAF55D (CDGM): H-ZLAF55D
cdgm_h_zlaf55d = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZLAF55D", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zlaf55d.range_nm)  # (365, 2325) nm
eps = cdgm_h_zlaf55d.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=0.227765275λ2λ2−0.0412221798+2.04686906λ2λ2−0.010748949+1.20888928λ2λ2−87.8518998

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.227765275
C30.0412221798
C42.04686906
C50.010748949
C61.20888928
C787.8518998

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 1.05e-06 1.59e-08 -2.67e-11 6.94e-07 2.64e-10 0.221
nd
1.834810
Vd
42.725177
glass code
835427
glass status
standard
density
value: 4560
thermal expansion
value: 6.4e-06, temperature range: 243 343; value: 8.1e-06, temperature range: 293 573
dPgF
-0.0086
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.94e-06 K⁻¹ at 633 nm, dn/dT = 9.20e-07 K⁻¹ at 1310 nm, dn/dT = 8.40e-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-ZLAF55D (CDGM), H-ZLAF55D: n and k versus wavelength
λ (µm)nk
0.3651.8853365.581900e-07
0.3666981.8844925.159605e-07
0.3684031.8836594.735346e-07
0.371.8828934.338200e-07
0.3701171.8828374.319657e-07
0.3718381.8820264.046655e-07
0.3735681.8812263.772384e-07
0.3753061.8804353.496838e-07
0.3770511.8796553.220009e-07
0.3788051.8788842.941893e-07
0.381.8783672.752400e-07
0.3805671.8781242.707096e-07
0.3823371.8773732.565662e-07
0.3841161.8766312.423569e-07
0.3859021.8758982.280816e-07
0.3876971.8751752.137399e-07
0.38951.8744611.993315e-07
0.391.8742651.953400e-07
0.3913121.8737551.880655e-07
0.3931321.8730581.779748e-07
0.3949611.872371.678371e-07
0.3967981.871691.576522e-07
0.3986441.8710181.474200e-07
0.41.8705321.399000e-07
0.4004981.8703551.386094e-07
0.4023611.8696991.337798e-07
0.4042321.8690511.289277e-07
0.4061121.8684121.240530e-07
0.4080011.8677791.191557e-07
0.4098991.8671541.142356e-07
0.4118061.8665371.092926e-07
0.4137211.8659271.043266e-07
0.4156451.8653249.933757e-08
0.4175791.8647289.432528e-08
0.4195211.8641398.928968e-08
0.421.8639958.804800e-08
0.4214721.8635578.624807e-08
0.4234331.8629818.385157e-08
0.4254021.8624138.144392e-08
0.4273811.8618517.902508e-08
0.4293691.8612957.659498e-08
0.4313661.8607467.415358e-08
0.4333721.8602027.170082e-08
0.4353881.8596666.923666e-08
0.4374131.8591356.676103e-08
0.4394481.858616.427389e-08
0.441.8584696.359900e-08
0.4414921.8580916.187507e-08
0.4435451.8575785.950222e-08
0.4456091.857075.711834e-08
0.4476811.8565695.472336e-08
0.4497641.8560735.231725e-08
0.4518561.8555824.989995e-08
0.4539571.8550974.747140e-08
0.4560691.8546174.503155e-08
0.458191.8541434.258036e-08
0.461.8537434.048900e-08
0.4603211.8536734.026962e-08
0.4624621.8532093.880756e-08
0.4646131.852753.733871e-08
0.4667751.8522963.586302e-08
0.4689461.8518463.438047e-08
0.4711271.8514023.289102e-08
0.4733181.8509623.139465e-08
0.475521.8505272.989131e-08
0.4777321.8500972.838099e-08
0.4799541.8496722.686363e-08
0.481.8496632.683200e-08
0.4821861.8492512.607911e-08
0.4844291.8488342.530669e-08
0.4866821.8484222.453067e-08
0.4889461.8480142.375105e-08
0.491221.847612.296779e-08
0.4935051.8472112.218090e-08
0.49581.8468162.139035e-08
0.4981071.8464252.059611e-08
0.51.8461081.994400e-08
0.5004231.8460381.984932e-08
0.5027511.8456551.932878e-08
0.5050891.8452761.880582e-08
0.5074391.8449011.828043e-08
0.5097991.844531.775259e-08
0.512171.8441631.722230e-08
0.5145531.8437991.668954e-08
0.5169461.843441.615431e-08
0.519351.8430841.561658e-08
0.5217661.8427311.507636e-08
0.5241931.8423821.453362e-08
0.5266311.8420371.398836e-08
0.5290811.8416951.344056e-08
0.5315421.8413561.289021e-08
0.5340141.8410211.233730e-08
0.5364981.840691.178182e-08
0.5389931.8403611.122376e-08
0.54151.8400361.066310e-08
0.5440191.8397141.009984e-08
0.5465491.8393969.533949e-09
0.5490921.839088.965431e-09
0.551.8389688.762300e-09
0.5516461.8387688.788519e-09
0.5542121.8384588.829399e-09
0.5567891.8381528.870469e-09
0.5593791.8378498.911730e-09
0.5619811.8375488.953182e-09
0.5645951.8372518.994828e-09
0.5672211.8369569.036667e-09
0.5698591.8366649.078701e-09
0.572511.8363769.120931e-09
0.5751731.8360899.163356e-09
0.5778481.8358069.205980e-09
0.5805361.8355259.248801e-09
0.5832361.8352479.291822e-09
0.5859491.8349729.335042e-09
0.5886751.8346999.378464e-09
0.5914131.8344299.422088e-09
0.5941641.8341619.465915e-09
0.5969271.8338969.509945e-09
0.5997041.8336349.554180e-09
0.61.8336069.558900e-09
0.6024931.8333739.598596e-09
0.6052961.8331169.643216e-09
0.6081111.832869.688043e-09
0.610941.8326079.733079e-09
0.6137811.8323569.778324e-09
0.6166361.8321089.823780e-09
0.6195041.8318629.869447e-09
0.6223861.8316189.915327e-09
0.6252811.8313769.961420e-09
0.6281891.8311371.000773e-08
0.6311111.83091.005425e-08
0.6340471.8306641.010099e-08
0.6369961.8304311.014795e-08
0.6399591.83021.019512e-08
0.6429351.8299711.024251e-08
0.6459261.8297451.029013e-08
0.648931.829521.033797e-08
0.651.829441.035500e-08
0.6519491.8292971.038606e-08
0.6549811.8290761.043440e-08
0.6580281.8288571.048296e-08
0.6610881.828641.053175e-08
0.6641631.8284241.058076e-08
0.6672521.8282111.063000e-08
0.6703561.8281.067947e-08
0.6734741.827791.072918e-08
0.6766071.8275821.077911e-08
0.6797541.8273761.082927e-08
0.6829151.8271711.087967e-08
0.6860921.8269691.093031e-08
0.6892831.8267681.098117e-08
0.6924891.8265681.103228e-08
0.695711.8263711.108362e-08
0.6989461.8261751.113520e-08
0.71.8261121.115200e-08
0.7021971.8259811.118700e-08
0.7054631.8257881.123903e-08
0.7087451.8255971.129130e-08
0.7120411.8254071.134382e-08
0.7153531.8252191.139658e-08
0.7186811.8250321.144958e-08
0.7220231.8248471.150283e-08
0.7253821.8246631.155633e-08
0.7287561.8244811.161008e-08
0.7321461.8243011.166408e-08
0.7355511.8241211.171833e-08
0.7389721.8239431.177283e-08
0.7424091.8237671.182758e-08
0.7458631.8235921.188259e-08
0.7493321.8234181.193786e-08
0.7528171.8232451.199338e-08
0.7563191.8230741.204916e-08
0.7598371.8229041.210520e-08
0.7633711.8227361.216150e-08
0.7669221.8225681.221806e-08
0.7704891.8224021.227489e-08
0.7740731.8222381.233198e-08
0.7776731.8220741.238933e-08
0.781291.8219111.244696e-08
0.7849241.821751.250485e-08
0.7885751.821591.256301e-08
0.7922431.8214311.262144e-08
0.7959281.8212731.268014e-08
0.799631.8211161.273911e-08
0.81.8211011.274500e-08
0.803351.8209611.279840e-08
0.8070861.8208061.285796e-08
0.810841.8206531.291780e-08
0.8146121.82051.297791e-08
0.8184011.8203491.303831e-08
0.8222081.8201981.309899e-08
0.8260321.8200491.315995e-08
0.8298741.81991.322119e-08
0.8337341.8197531.328272e-08
0.8376121.8196061.334454e-08
0.8415081.8194611.340664e-08
0.8454221.8193161.346903e-08
0.8493551.8191731.353171e-08
0.851.8191491.354200e-08
0.8533051.819031.359462e-08
0.8572741.8188881.365781e-08
0.8612621.8187471.372129e-08
0.8652681.8186071.378506e-08
0.8692921.8184671.384913e-08
0.8733361.8183291.391350e-08
0.8773981.8181911.397817e-08
0.8814791.8180541.404315e-08
0.8855791.8179181.410842e-08
0.8896981.8177831.417399e-08
0.8938361.8176481.423988e-08
0.8979941.8175141.430606e-08
0.91.817451.433800e-08
0.9021711.8173811.437260e-08
0.9063671.8172491.443949e-08
0.9105831.8171171.450669e-08
0.9148181.8169861.457420e-08
0.9190731.8168561.464203e-08
0.9233481.8167271.471017e-08
0.9276431.8165981.477863e-08
0.9319581.8164691.484741e-08
0.9362931.8163421.491651e-08
0.9406481.8162151.498593e-08
0.9450231.8160881.505567e-08
0.9494191.8159631.512573e-08
0.951.8159461.513500e-08
0.9538351.8158371.519605e-08
0.9582711.8157131.526668e-08
0.9627291.8155891.533764e-08
0.9672071.8154651.540893e-08
0.9717051.8153421.548055e-08
0.9762251.815221.555250e-08
0.9807661.8150981.562479e-08
0.9853281.8149771.569742e-08
0.9899111.8148561.577038e-08
0.9945151.8147351.584368e-08
0.9991411.8146151.591732e-08
11.8145931.593100e-08
1.003791.8144961.599136e-08
1.008461.8143771.606575e-08
1.013151.8142581.614049e-08
1.017861.814141.621558e-08
1.022591.8140221.629101e-08
1.027351.8139051.636680e-08
1.032131.8137881.644293e-08
1.036931.8136721.651943e-08
1.041751.8135551.659628e-08
1.04661.813441.667348e-08
1.051471.8133241.675105e-08
1.056361.8132091.682897e-08
1.061.8131241.688700e-08
1.061271.8130941.690726e-08
1.066211.812981.698593e-08
1.071171.8128651.706496e-08
1.076151.8127511.714435e-08
1.081151.8126381.722412e-08
1.086181.8125251.730426e-08
1.091241.8124111.738477e-08
1.096311.8122991.746565e-08
1.101411.8121861.754691e-08
1.106531.8120741.762855e-08
1.111681.8119621.771057e-08
1.116851.811851.779297e-08
1.122051.8117381.787576e-08
1.127271.8116261.795892e-08
1.132511.8115151.804248e-08
1.137781.8114041.812642e-08
1.143071.8112931.821076e-08
1.148391.8111821.829549e-08
1.153731.8110711.838061e-08
1.159091.8109611.846612e-08
1.164481.810851.855204e-08
1.16991.810741.863835e-08
1.175341.8106291.872507e-08
1.180811.8105191.881219e-08
1.18631.8104091.889971e-08
1.191821.8102991.898764e-08
1.197361.8101891.907598e-08
1.21.8101371.911800e-08
1.202931.8100791.916472e-08
1.208531.8099691.925385e-08
1.214151.8098591.934340e-08
1.21981.8097491.943336e-08
1.225471.8096391.952374e-08
1.231171.8095291.961454e-08
1.23691.8094191.970577e-08
1.242651.8093091.979742e-08
1.248431.8091991.988949e-08
1.254241.8090891.998199e-08
1.260071.8089792.007493e-08
1.265931.8088692.016829e-08
1.271821.8087592.026209e-08
1.277741.8086482.035633e-08
1.283681.8085382.045101e-08
1.289651.8084272.054612e-08
1.295651.8083172.064168e-08
1.301671.8082062.073768e-08
1.307731.8080952.083413e-08
1.313811.8079842.093103e-08
1.319921.8078722.102837e-08
1.326061.8077612.112617e-08
1.332231.8076492.122443e-08
1.338431.8075372.132314e-08
1.344651.8074252.142231e-08
1.350911.8073132.152195e-08
1.357191.8072012.162204e-08
1.36351.8070882.172260e-08
1.369851.8069752.182363e-08
1.376221.8068622.192513e-08
1.382621.8067482.202711e-08
1.389051.8066342.212955e-08
1.395511.806522.223247e-08
1.41.8064412.230400e-08
1.4021.8064062.246359e-08
1.408521.8062912.298368e-08
1.415071.8061762.350620e-08
1.421661.806062.403115e-08
1.428271.8059452.455853e-08
1.434911.8058292.508837e-08
1.441591.8057122.562068e-08
1.448291.8055952.615546e-08
1.455031.8054782.669273e-08
1.46181.805362.723249e-08
1.468591.8052422.777477e-08
1.475431.8051242.831957e-08
1.482291.8050052.886690e-08
1.489181.8048852.941678e-08
1.496111.8047652.996922e-08
1.503071.8046453.052423e-08
1.510061.8045243.108182e-08
1.517081.8044033.164200e-08
1.524141.8042813.220479e-08
1.531231.8041593.277019e-08
1.538351.8040363.333823e-08
1.545511.8039123.390891e-08
1.55271.8037883.448224e-08
1.559921.8036643.505824e-08
1.567171.8035393.563691e-08
1.574461.8034133.621828e-08
1.581791.8032873.680236e-08
1.589141.803163.738915e-08
1.596541.8030323.797867e-08
1.61.8029723.825500e-08
1.603961.8029044.006221e-08
1.611421.8027754.346590e-08
1.618921.8026454.688542e-08
1.626451.8025155.032085e-08
1.634011.8023845.377226e-08
1.641611.8022525.723972e-08
1.649251.802126.072331e-08
1.656921.8019876.422310e-08
1.664631.8018536.773917e-08
1.672371.8017187.127160e-08
1.680151.8015827.482046e-08
1.687961.8014467.838582e-08
1.695811.8013098.196777e-08
1.70371.8011718.556637e-08
1.711631.8010328.918172e-08
1.719591.8008939.281388e-08
1.727591.8007529.646294e-08
1.735621.8006111.001290e-07
1.743691.8004691.038120e-07
1.751811.8003261.075123e-07
1.759951.8001821.112297e-07
1.768141.8000371.149644e-07
1.776361.7998911.187165e-07
1.784631.7997441.224860e-07
1.792931.7995961.262731e-07
1.81.799471.295000e-07
1.801271.7994471.315421e-07
1.809641.7992971.450516e-07
1.818061.7991461.586240e-07
1.826521.7989941.722596e-07
1.835011.7988411.859585e-07
1.843551.7986871.997212e-07
1.852121.7985322.135479e-07
1.860741.7983762.274389e-07
1.869391.7982182.413945e-07
1.878091.7980592.554150e-07
1.886821.79792.695008e-07
1.89561.7977392.836520e-07
1.904421.7975772.978691e-07
1.913281.7974133.121523e-07
1.922181.7972493.265020e-07
1.931121.7970833.409183e-07
1.94011.7969163.554018e-07
1.949121.7967473.699526e-07
1.958191.7965773.845711e-07
1.96731.7964063.992576e-07
1.976451.7962344.140124e-07
1.985641.796064.288358e-07
1.994881.7958854.437282e-07
21.7957884.519900e-07
2.004161.7957094.686042e-07
2.013481.7955315.058787e-07
2.022841.7953515.433265e-07
2.032251.795175.809485e-07
2.04171.7949886.187454e-07
2.05121.7948046.567182e-07
2.060741.7946196.948676e-07
2.070331.7944327.331945e-07
2.079961.7942437.716996e-07
2.089631.7940538.103839e-07
2.099351.7938628.492480e-07
2.109121.7936688.882930e-07
2.118931.7934739.275195e-07
2.128781.7932779.669285e-07
2.138681.7930781.006521e-06
2.148631.7928781.046297e-06
2.158621.7926771.086259e-06
2.168671.7924731.126406e-06
2.178751.7922681.166740e-06
2.188891.792061.207262e-06
2.199071.7918511.247972e-06
2.21.7918321.251700e-06
2.20931.791641.441827e-06
2.219571.7914281.651995e-06
2.22991.7912131.863141e-06
2.240271.7909962.075269e-06
2.250691.7907782.288383e-06
2.261161.7905572.502489e-06
2.271671.7903352.717591e-06
2.282241.790112.933693e-06
2.292861.7898833.150800e-06
2.303521.7896543.368917e-06
2.314241.7894233.588049e-06
2.3251.789193.808200e-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
—