Optical constants

Refractive index of H-LAF62 (CDGM)

H-LAF62: 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
1.72
Extinction coefficient k
1.98319e-08
Permittivity ε1
2.95839
Permittivity ε2
6.82216e-08
Absorption coefficient α
0.00424123 cm⁻¹
Penetration depth δ = λ/(2πk)
4.71561e+09 nm
Abbe number Vd
43.681
Chromatic dispersion dn/dλ
-0.084135 µm⁻¹
Group index ng
1.76943
Group velocity dispersion
158.487 fs²/mm
Dispersion parameter D
-864.63 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-LAF62 (CDGM): H-LAF62
cdgm_h_laf62 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAF62", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_laf62.range_nm)  # (365, 2325) nm
eps = cdgm_h_laf62.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=1.68895143λ2λ2−0.00969035554+0.196642406λ2λ2−0.0423750782+1.18909464λ2λ2−118.147033

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.68895143
C30.00969035554
C40.196642406
C50.0423750782
C61.18909464
C7118.147033

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 3.69e-06 1.78e-08 -1.65e-10 7.29e-07 1.87e-10 0.206
nd
1.720000
Vd
43.680739
glass code
720437
density
value: 3890
thermal expansion
value: 7e-06, temperature range: 243 343; value: 8.8e-06, temperature range: 293 573
dPgF
-0.0027
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 3.25e-06 K⁻¹ at 633 nm, dn/dT = 2.29e-06 K⁻¹ at 1310 nm, dn/dT = 2.21e-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-LAF62 (CDGM), H-LAF62: n and k versus wavelength
λ (µm)nk
0.3651.7630829.146000e-07
0.3666981.7623538.061147e-07
0.3684031.7616346.971248e-07
0.371.7609735.951000e-07
0.3701171.7609255.919849e-07
0.3718381.7602265.461232e-07
0.3735681.7595355.000481e-07
0.3753061.7588544.537588e-07
0.3770511.7581824.072541e-07
0.3788051.7575193.605332e-07
0.381.7570733.287000e-07
0.3805671.7568643.217014e-07
0.3823371.7562182.998525e-07
0.3841161.755582.779020e-07
0.3859021.7549512.558494e-07
0.3876971.7543292.336943e-07
0.38951.7537162.114360e-07
0.391.7535482.052700e-07
0.3913121.753111.962569e-07
0.3931321.7525121.837545e-07
0.3949611.7519211.711939e-07
0.3967981.7513381.585749e-07
0.3986441.7507621.458973e-07
0.41.7503451.365800e-07
0.4004981.7501941.351162e-07
0.4023611.7496321.296385e-07
0.4042321.7490771.241353e-07
0.4061121.7485291.186065e-07
0.4080011.7479881.130521e-07
0.4098991.7474531.074717e-07
0.4118061.7469251.018654e-07
0.4137211.7464049.623307e-08
0.4156451.7458889.057451e-08
0.4175791.7453798.488963e-08
0.4195211.7448767.917831e-08
0.421.7447537.777000e-08
0.4214721.7443797.672673e-08
0.4234331.7438877.533769e-08
0.4254021.7434027.394218e-08
0.4273811.7429227.254018e-08
0.4293691.7424487.113166e-08
0.4313661.7419796.971659e-08
0.4333721.7415166.829494e-08
0.4353881.7410596.686667e-08
0.4374131.7406066.543176e-08
0.4394481.7401596.399018e-08
0.441.7400396.359900e-08
0.4414921.7397176.215130e-08
0.4435451.739286.015866e-08
0.4456091.7388485.815676e-08
0.4476811.7384215.614554e-08
0.4497641.7379995.412497e-08
0.4518561.7375825.209500e-08
0.4539571.7371695.005558e-08
0.4560691.7367614.800668e-08
0.458191.7363584.594826e-08
0.461.7360184.419200e-08
0.4603211.7359594.416080e-08
0.4624621.7355644.395290e-08
0.4646131.7351744.374403e-08
0.4667751.7347884.353419e-08
0.4689461.7344074.332338e-08
0.4711271.7340294.311158e-08
0.4733181.7336564.289880e-08
0.475521.7332874.268503e-08
0.4777321.7329224.247026e-08
0.4799541.7325614.225450e-08
0.481.7325544.225000e-08
0.4821861.7322044.068694e-08
0.4844291.7318513.908333e-08
0.4866821.7315013.747227e-08
0.4889461.7311553.585371e-08
0.491221.7308133.422762e-08
0.4935051.7304753.259397e-08
0.49581.730143.095272e-08
0.4981071.7298092.930384e-08
0.51.7295412.795000e-08
0.5004231.7294812.789910e-08
0.5027511.7291572.761927e-08
0.5050891.7288372.733814e-08
0.5074391.7285192.705571e-08
0.5097991.7282052.677195e-08
0.512171.7278942.648688e-08
0.5145531.7275872.620049e-08
0.5169461.7272822.591276e-08
0.519351.7269812.562369e-08
0.5217661.7266832.533328e-08
0.5241931.7263882.504152e-08
0.5266311.7260962.474840e-08
0.5290811.7258072.445391e-08
0.5315421.7255212.415806e-08
0.5340141.7252382.386083e-08
0.5364981.7249582.356222e-08
0.5389931.7246812.326222e-08
0.54151.7244062.296082e-08
0.5440191.7241352.265803e-08
0.5465491.7238662.235382e-08
0.5490921.7235992.204820e-08
0.551.7235052.193900e-08
0.5516461.7233362.184678e-08
0.5542121.7230752.170298e-08
0.5567891.7228162.155852e-08
0.5593791.722562.141339e-08
0.5619811.7223072.126758e-08
0.5645951.7220562.112109e-08
0.5672211.7218082.097393e-08
0.5698591.7215622.082607e-08
0.572511.7213192.067754e-08
0.5751731.7210782.052830e-08
0.5778481.7208392.037838e-08
0.5805361.7206022.022776e-08
0.5832361.7203682.007643e-08
0.5859491.7201361.992441e-08
0.5886751.7199071.977167e-08
0.5914131.7196791.961823e-08
0.5941641.7194541.946407e-08
0.5969271.7192311.930920e-08
0.5997041.719011.915360e-08
0.61.7189861.913700e-08
0.6024931.7187911.921653e-08
0.6052961.7185741.930593e-08
0.6081111.7183591.939574e-08
0.610941.7181461.948597e-08
0.6137811.7179361.957662e-08
0.6166361.7177271.966769e-08
0.6195041.717521.975919e-08
0.6223861.7173151.985111e-08
0.6252811.7171121.994346e-08
0.6281891.7169112.003623e-08
0.6311111.7167122.012944e-08
0.6340471.7165142.022308e-08
0.6369961.7163182.031716e-08
0.6399591.7161242.041168e-08
0.6429351.7159322.050663e-08
0.6459261.7157422.060203e-08
0.648931.7155532.069787e-08
0.651.7154872.073200e-08
0.6519491.7153662.079412e-08
0.6549811.7151812.089079e-08
0.6580281.7149972.098792e-08
0.6610881.7148152.108549e-08
0.6641631.7146352.118352e-08
0.6672521.7144562.128201e-08
0.6703561.7142782.138095e-08
0.6734741.7141032.148035e-08
0.6766071.7139282.158022e-08
0.6797541.7137562.168055e-08
0.6829151.7135852.178135e-08
0.6860921.7134152.188261e-08
0.6892831.7132472.198435e-08
0.6924891.713082.208656e-08
0.695711.7129142.218924e-08
0.6989461.712752.229241e-08
0.71.7126972.232600e-08
0.7021971.7125882.239609e-08
0.7054631.7124262.250028e-08
0.7087451.7122662.260496e-08
0.7120411.7121082.271012e-08
0.7153531.7119512.281577e-08
0.7186811.7117952.292191e-08
0.7220231.711642.302855e-08
0.7253821.7114862.313568e-08
0.7287561.7113342.324331e-08
0.7321461.7111832.335144e-08
0.7355511.7110342.346008e-08
0.7389721.7108852.356922e-08
0.7424091.7107382.367886e-08
0.7458631.7105912.378902e-08
0.7493321.7104462.389969e-08
0.7528171.7103032.401087e-08
0.7563191.710162.412257e-08
0.7598371.7100182.423479e-08
0.7633711.7098782.434754e-08
0.7669221.7097382.446080e-08
0.7704891.70962.457460e-08
0.7740731.7094622.468892e-08
0.7776731.7093262.480378e-08
0.781291.7091912.491916e-08
0.7849241.7090562.503509e-08
0.7885751.7089232.515156e-08
0.7922431.7087912.526856e-08
0.7959281.7086592.538611e-08
0.799631.7085292.550421e-08
0.81.7085162.551600e-08
0.803351.7083992.471379e-08
0.8070861.7082712.381894e-08
0.810841.7081432.291993e-08
0.8146121.7080162.201673e-08
0.8184011.7078912.110933e-08
0.8222081.7077662.019772e-08
0.8260321.7076411.928186e-08
0.8298741.7075181.836174e-08
0.8337341.7073961.743734e-08
0.8376121.7072741.650865e-08
0.8415081.7071531.557563e-08
0.8454221.7070331.463827e-08
0.8493551.7069141.369656e-08
0.851.7068951.354200e-08
0.8533051.7067961.359462e-08
0.8572741.7066781.365781e-08
0.8612621.7065611.372129e-08
0.8652681.7064451.378506e-08
0.8692921.706331.384913e-08
0.8733361.7062151.391350e-08
0.8773981.7061011.397817e-08
0.8814791.7059881.404315e-08
0.8855791.7058751.410842e-08
0.8896981.7057631.417399e-08
0.8938361.7056521.423988e-08
0.8979941.7055411.430606e-08
0.91.7054881.433800e-08
0.9021711.7054311.437260e-08
0.9063671.7053221.443949e-08
0.9105831.7052131.450669e-08
0.9148181.7051051.457420e-08
0.9190731.7049981.464203e-08
0.9233481.7048911.471017e-08
0.9276431.7047851.477863e-08
0.9319581.7046791.484741e-08
0.9362931.7045741.491651e-08
0.9406481.7044691.498593e-08
0.9450231.7043651.505567e-08
0.9494191.7042611.512573e-08
0.951.7042481.513500e-08
0.9538351.7041581.519605e-08
0.9582711.7040561.526668e-08
0.9627291.7039541.533764e-08
0.9672071.7038521.540893e-08
0.9717051.7037511.548055e-08
0.9762251.703651.555250e-08
0.9807661.703551.562479e-08
0.9853281.703451.569742e-08
0.9899111.7033511.577038e-08
0.9945151.7032521.584368e-08
0.9991411.7031541.591732e-08
11.7031361.593100e-08
1.003791.7030561.599136e-08
1.008461.7029581.606575e-08
1.013151.7028611.614049e-08
1.017861.7027641.621558e-08
1.022591.7026681.629101e-08
1.027351.7025721.636680e-08
1.032131.7024761.644293e-08
1.036931.7023811.651943e-08
1.041751.7022861.659628e-08
1.04661.7021911.667348e-08
1.051471.7020971.675105e-08
1.056361.7020031.682897e-08
1.061.7019331.688700e-08
1.061271.7019091.690726e-08
1.066211.7018151.698593e-08
1.071171.7017221.706496e-08
1.076151.7016291.714435e-08
1.081151.7015371.722412e-08
1.086181.7014441.730426e-08
1.091241.7013521.738477e-08
1.096311.701261.746565e-08
1.101411.7011691.754691e-08
1.106531.7010771.762855e-08
1.111681.7009861.771057e-08
1.116851.7008951.779297e-08
1.122051.7008041.787576e-08
1.127271.7007141.795892e-08
1.132511.7006241.804248e-08
1.137781.7005331.812642e-08
1.143071.7004431.821076e-08
1.148391.7003531.829549e-08
1.153731.7002641.838061e-08
1.159091.7001741.846612e-08
1.164481.7000841.855204e-08
1.16991.6999951.863835e-08
1.175341.6999061.872507e-08
1.180811.6998171.881219e-08
1.18631.6997281.889971e-08
1.191821.6996391.898764e-08
1.197361.699551.907598e-08
1.21.6995081.911800e-08
1.202931.6994611.949243e-08
1.208531.6993722.020680e-08
1.214151.6992842.092450e-08
1.21981.6991952.164553e-08
1.225471.6991072.236991e-08
1.231171.6990182.309767e-08
1.23691.698932.382881e-08
1.242651.6988412.456335e-08
1.248431.6987532.530131e-08
1.254241.6986642.604270e-08
1.260071.6985762.678754e-08
1.265931.6984872.753585e-08
1.271821.6983992.828763e-08
1.277741.698312.904291e-08
1.283681.6982212.980171e-08
1.289651.6981333.056403e-08
1.295651.6980443.132990e-08
1.301671.6979553.209933e-08
1.307731.6978663.287234e-08
1.313811.6977773.364895e-08
1.319921.6976883.442917e-08
1.326061.6975993.521302e-08
1.332231.697513.600051e-08
1.338431.6974213.679167e-08
1.344651.6973313.758650e-08
1.350911.6972423.838504e-08
1.357191.6971523.918728e-08
1.36351.6970623.999326e-08
1.369851.6969724.080299e-08
1.376221.6968824.161648e-08
1.382621.6967914.243376e-08
1.389051.6967014.325484e-08
1.395511.696614.407974e-08
1.41.6965474.465300e-08
1.4021.6965194.484478e-08
1.408521.6964284.546981e-08
1.415071.6963364.609774e-08
1.421661.6962454.672858e-08
1.428271.6961534.736237e-08
1.434911.6960614.799910e-08
1.441591.6959684.863879e-08
1.448291.6958764.928146e-08
1.455031.6957834.992712e-08
1.46181.695695.057578e-08
1.468591.6955965.122746e-08
1.475431.6955035.188217e-08
1.482291.6954095.253992e-08
1.489181.6953145.320074e-08
1.496111.695225.386463e-08
1.503071.6951245.453160e-08
1.510061.6950295.520168e-08
1.517081.6949335.587487e-08
1.524141.6948375.655120e-08
1.531231.6947415.723067e-08
1.538351.6946445.791330e-08
1.545511.6945475.859911e-08
1.55271.6944495.928811e-08
1.559921.6943515.998031e-08
1.567171.6942536.067573e-08
1.574461.6941546.137439e-08
1.581791.6940556.207630e-08
1.589141.6939556.278147e-08
1.596541.6938556.348992e-08
1.61.6938086.382200e-08
1.603961.6937546.655778e-08
1.611421.6936537.171034e-08
1.618921.6935527.688686e-08
1.626451.6934498.208746e-08
1.634011.6933478.731225e-08
1.641611.6932449.256135e-08
1.649251.693149.783485e-08
1.656921.6930361.031329e-07
1.664631.6929311.084556e-07
1.672371.6928261.138030e-07
1.680151.692721.191753e-07
1.687961.6926141.245726e-07
1.695811.6925071.299950e-07
1.70371.6923991.354426e-07
1.711631.6922911.409156e-07
1.719591.6921821.464140e-07
1.727591.6920731.519380e-07
1.735621.6919631.574877e-07
1.743691.6918521.630632e-07
1.751811.6917411.686646e-07
1.759951.6916291.742921e-07
1.768141.6915161.799458e-07
1.776361.6914031.856258e-07
1.784631.6912891.913321e-07
1.792931.6911741.970651e-07
1.81.6910762.019500e-07
1.801271.6910582.033262e-07
1.809641.6909422.124304e-07
1.818061.6908252.215770e-07
1.826521.6907072.307662e-07
1.835011.6905892.399981e-07
1.843551.6904692.492729e-07
1.852121.6903492.585909e-07
1.860741.6902282.679522e-07
1.869391.6901072.773571e-07
1.878091.6899842.868057e-07
1.886821.689862.962983e-07
1.89561.6897363.058350e-07
1.904421.6896113.154160e-07
1.913281.6894853.250417e-07
1.922181.6893583.347121e-07
1.931121.689233.444274e-07
1.94011.6891013.541880e-07
1.949121.6889713.639940e-07
1.958191.6888413.738456e-07
1.96731.6887093.837430e-07
1.976451.6885773.936864e-07
1.985641.6884434.036761e-07
1.994881.6883084.137123e-07
21.6882334.192800e-07
2.004161.6881734.334617e-07
2.013481.6880364.652785e-07
2.022841.6878984.972434e-07
2.032251.6877595.293569e-07
2.04171.687625.616199e-07
2.05121.6874795.940328e-07
2.060741.6873366.265966e-07
2.070331.6871936.593118e-07
2.079961.6870496.921792e-07
2.089631.6869037.251994e-07
2.099351.6867577.583733e-07
2.109121.6866097.917014e-07
2.118931.686468.251846e-07
2.128781.686318.588235e-07
2.138681.6861588.926189e-07
2.148631.6860069.265714e-07
2.158621.6858529.606819e-07
2.168671.6856969.949511e-07
2.178751.685541.029380e-06
2.188891.6853821.063968e-06
2.199071.6852231.098718e-06
2.21.6852081.101900e-06
2.20931.6850621.188708e-06
2.219571.68491.284667e-06
2.22991.6847371.381072e-06
2.240271.6845721.477926e-06
2.250691.6844061.575230e-06
2.261161.6842381.672987e-06
2.271671.6840691.771198e-06
2.282241.6838991.869866e-06
2.292861.6837271.968994e-06
2.303521.6835532.068582e-06
2.314241.6833782.168633e-06
2.3251.6832012.269150e-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
—