Optical constants

Refractive index of D-LAF53 (CDGM)

D-LAF53: n,k 0.302–2.325 µm

Data
formula 2 + tabulated k
Range
0.302–2.325 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.302–2.325 µm
Refractive index n
1.7433
Extinction coefficient k
2.34385e-08
Permittivity ε1
3.03908
Permittivity ε2
8.17205e-08
Absorption coefficient α
0.00501254 cm⁻¹
Penetration depth δ = λ/(2πk)
3.98999e+09 nm
Abbe number Vd
49.326
Chromatic dispersion dn/dλ
-0.0774875 µm⁻¹
Group index ng
1.78883
Group velocity dispersion
139.575 fs²/mm
Dispersion parameter D
-761.454 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-LAF53 (CDGM): D-LAF53
cdgm_d_laf53 = ls.fetch_refractiveindex("specs", "CDGM-optical", "D-LAF53", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_d_laf53.range_nm)  # (302, 2325) nm
eps = cdgm_d_laf53.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=0.645397592λ2λ2−0.023499357+1.17528667λ2λ2−87.7755219+1.32747885λ2λ2−0.0060601597

Valid from 0.302 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.645397592
C30.023499357
C41.17528667
C587.7755219
C61.32747885
C70.0060601597

Comments and conditions

anneal rate:4°C/h

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 7.67e-06 2.36e-08 -1.95e-10 6.35e-07 3.67e-10 0.208
nd
1.743300
Vd
49.325949
glass code
743493
density
value: 4260
thermal expansion
value: 5.6e-06, temperature range: 243 343; value: 7.2e-06, temperature range: 293 573
dPgF
-0.0089
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 5.50e-06 K⁻¹ at 633 nm, dn/dT = 4.59e-06 K⁻¹ at 1310 nm, dn/dT = 4.51e-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 431 wavelengths, the same grid as the API and the library
D-LAF53 (CDGM), D-LAF53: n and k versus wavelength
λ (µm)nk
0.3021.8138767.016700e-06
0.3035491.8127456.757971e-06
0.3051061.8116316.497915e-06
0.306671.8105336.236526e-06
0.3082431.8094525.973795e-06
0.3098241.8083865.709718e-06
0.311.8082695.680300e-06
0.3114131.8073375.397253e-06
0.313011.8063035.077293e-06
0.3146151.8052834.755692e-06
0.3162291.8042794.432441e-06
0.317851.8032894.107533e-06
0.3194811.8023143.780959e-06
0.321.8020073.676900e-06
0.3211191.8013523.539145e-06
0.3227661.8004053.336416e-06
0.3244211.799473.132647e-06
0.3260851.7985492.927834e-06
0.3277571.7976412.721969e-06
0.3294381.7967462.515050e-06
0.331.796452.445900e-06
0.3311281.7958632.345346e-06
0.3328261.7949922.193935e-06
0.3345331.7941342.041747e-06
0.3362491.7932871.888779e-06
0.3379731.7924521.735027e-06
0.3397061.7916291.580486e-06
0.341.7914911.554300e-06
0.3414481.7908171.463375e-06
0.34321.7900161.353454e-06
0.344961.7892251.242968e-06
0.3467291.7884461.131917e-06
0.3485071.7876771.020295e-06
0.351.7870429.265800e-07
0.3502941.7869189.156291e-07
0.3520911.7861698.487996e-07
0.3538971.785437.816275e-07
0.3557121.7847027.141108e-07
0.3575361.7839826.462479e-07
0.3593691.7832725.780369e-07
0.361.7830315.545800e-07
0.3612121.7825725.257463e-07
0.3630651.7818814.816924e-07
0.3649271.7811984.374125e-07
0.3667981.7805253.929056e-07
0.368681.779863.481704e-07
0.371.7794013.167700e-07
0.370571.7792043.093744e-07
0.3724711.7785572.847329e-07
0.3743811.7779172.599649e-07
0.3763011.7772862.350700e-07
0.3782311.7766632.100473e-07
0.381.7761021.871100e-07
0.3801711.7760481.859682e-07
0.382121.7754411.729285e-07
0.384081.7748411.598220e-07
0.386051.7742491.466482e-07
0.388031.7736641.334069e-07
0.391.7730921.202300e-07
0.390021.7730871.201645e-07
0.392021.7725161.135427e-07
0.394031.7719531.068871e-07
0.3960511.7713971.001972e-07
0.3980821.7708489.347308e-08
0.41.7703388.712500e-08
0.4001241.7703068.694011e-08
0.4021761.769778.388072e-08
0.4042391.7692418.080564e-08
0.4063121.7687187.771479e-08
0.4083961.7682027.460809e-08
0.410491.7676927.148546e-08
0.4125951.7671886.834681e-08
0.4147111.766696.519206e-08
0.4168381.7661986.202114e-08
0.4189761.7657125.883395e-08
0.421.7654835.730700e-08
0.4211251.7652325.666095e-08
0.4232841.7647585.542018e-08
0.4254551.7642895.417304e-08
0.4276371.7638265.291951e-08
0.429831.7633695.165955e-08
0.4320351.7629175.039313e-08
0.434251.762474.912021e-08
0.4364771.7620284.784076e-08
0.4387161.7615924.655475e-08
0.441.7613454.581700e-08
0.4409661.7611614.520261e-08
0.4432271.7607354.376396e-08
0.44551.7603134.231793e-08
0.4477851.7598974.086448e-08
0.4500821.7594853.940358e-08
0.452391.7590793.793518e-08
0.454711.7586763.645926e-08
0.4570421.7582793.497577e-08
0.4593861.7578863.348467e-08
0.461.7577843.309400e-08
0.4617421.7574983.254862e-08
0.464111.7571143.180719e-08
0.466491.7567343.106195e-08
0.4688831.7563593.031289e-08
0.4712871.7559882.955999e-08
0.4737041.7556212.880322e-08
0.4761341.7552582.804258e-08
0.4785751.7548992.727803e-08
0.481.7546932.683200e-08
0.481031.7545442.647733e-08
0.4834971.7541942.562771e-08
0.4859761.7538472.477373e-08
0.4884691.7535042.391536e-08
0.4909741.7531652.305260e-08
0.4934921.7528292.218541e-08
0.4960231.7524972.131378e-08
0.4985671.7521692.043767e-08
0.51.7519871.994400e-08
0.5011231.7518451.998883e-08
0.5036931.7515242.009137e-08
0.5062771.7512062.019444e-08
0.5088731.7508922.029804e-08
0.5114831.7505822.040217e-08
0.5141061.7502742.050683e-08
0.5167431.749972.061203e-08
0.5193931.749672.071777e-08
0.5220561.7493722.082405e-08
0.5247341.7490782.093088e-08
0.5274251.7487872.103826e-08
0.530131.7484992.114618e-08
0.5328491.7482142.125466e-08
0.5355811.7479312.136370e-08
0.5383281.7476522.147329e-08
0.5410891.7473762.158345e-08
0.5438641.7471032.169417e-08
0.5466531.7468332.180546e-08
0.5494571.7465652.191732e-08
0.551.7465142.193900e-08
0.5522751.74632.202971e-08
0.5551071.7460382.214266e-08
0.5579541.7457792.225620e-08
0.5608151.7455222.237031e-08
0.5636911.7452682.248501e-08
0.5665821.7450162.260030e-08
0.5694881.7447672.271618e-08
0.5724091.7445212.283266e-08
0.5753441.7442772.294973e-08
0.5782951.7440352.306740e-08
0.5812611.7437962.318568e-08
0.5842421.7435592.330456e-08
0.5872381.7433252.342405e-08
0.590251.7430932.354416e-08
0.5932771.7428632.366488e-08
0.5963191.7426362.378622e-08
0.5993781.7424112.390818e-08
0.61.7423652.393300e-08
0.6024521.7421882.377605e-08
0.6055411.7419672.357825e-08
0.6086471.7417482.337943e-08
0.6117681.7415312.317960e-08
0.6149061.7413172.297874e-08
0.6180591.7411042.277685e-08
0.6212291.7408942.257392e-08
0.6244151.7406852.236995e-08
0.6276171.7404792.216494e-08
0.6308361.7402742.195888e-08
0.6340711.7400722.175176e-08
0.6373231.7398712.154357e-08
0.6405921.7396722.133432e-08
0.6438771.7394752.112400e-08
0.6471791.739282.091260e-08
0.651.7391152.073200e-08
0.6504981.7390862.074788e-08
0.6538341.7388942.085423e-08
0.6571871.7387042.096113e-08
0.6605581.7385162.106858e-08
0.6639451.738332.117658e-08
0.6673511.7381452.128514e-08
0.6707731.7379612.139425e-08
0.6742131.737782.150391e-08
0.6776711.73762.161415e-08
0.6811461.7374212.172494e-08
0.684641.7372442.183631e-08
0.6881511.7370692.194825e-08
0.691681.7368952.206076e-08
0.6952271.7367232.217384e-08
0.6987931.7365522.228751e-08
0.71.7364942.232600e-08
0.7023761.7363822.224998e-08
0.7059791.7362142.213474e-08
0.7095991.7360482.201892e-08
0.7132381.7358822.190250e-08
0.7168961.7357182.178549e-08
0.7205731.7355562.166787e-08
0.7242681.7353952.154965e-08
0.7279831.7352352.143083e-08
0.7317161.7350762.131140e-08
0.7354691.7349182.119135e-08
0.7392411.7347622.107069e-08
0.7430321.7346072.094941e-08
0.7468431.7344532.082751e-08
0.7506731.7343012.070498e-08
0.7545231.7341492.058182e-08
0.7583921.7339992.045803e-08
0.7622821.733852.033361e-08
0.7661911.7337022.020855e-08
0.770121.7335552.008285e-08
0.774071.7334091.995650e-08
0.778041.7332641.982951e-08
0.782031.733121.970186e-08
0.7860411.7329781.957356e-08
0.7900721.7328361.944460e-08
0.7941241.7326951.931498e-08
0.7981961.7325551.918469e-08
0.81.7324941.912700e-08
0.802291.7324161.887120e-08
0.8064051.7322781.841161e-08
0.810541.7321411.794965e-08
0.8146971.7320051.748533e-08
0.8188751.731871.701863e-08
0.8230751.7317361.654953e-08
0.8272961.7316021.607803e-08
0.8315391.731471.560411e-08
0.8358031.7313381.512776e-08
0.840091.7312071.464896e-08
0.8443981.7310771.416771e-08
0.8487291.7309471.368399e-08
0.851.730911.354200e-08
0.8530821.7308191.359106e-08
0.8574571.7306911.366071e-08
0.8618541.7305641.373072e-08
0.8662741.7304371.380108e-08
0.8707171.7303111.387181e-08
0.8751821.7301861.394290e-08
0.8796711.7300621.401436e-08
0.8841821.7299381.408618e-08
0.8887171.7298151.415837e-08
0.8932741.7296931.423093e-08
0.8978561.7295711.430386e-08
0.91.7295141.433800e-08
0.902461.729451.437722e-08
0.9070881.7293291.445099e-08
0.9117411.7292091.452514e-08
0.9164161.729091.459968e-08
0.9211161.7289711.467459e-08
0.925841.7288521.474989e-08
0.9305881.7287341.482558e-08
0.9353611.7286171.490165e-08
0.9401581.72851.497812e-08
0.944981.7283841.505497e-08
0.9498261.7282681.513222e-08
0.951.7282641.513500e-08
0.9546971.7281521.520978e-08
0.9595931.7280371.528772e-08
0.9645151.7279231.536607e-08
0.9694611.7278081.544482e-08
0.9744331.7276951.552397e-08
0.979431.7275811.560353e-08
0.9844531.7274681.568350e-08
0.9895021.7273551.576387e-08
0.9945771.7272431.584466e-08
0.9996781.7271311.592587e-08
11.7271241.593100e-08
1.00481.7270191.600755e-08
1.009961.7269081.608966e-08
1.015141.7267971.617219e-08
1.020341.7266861.625514e-08
1.025581.7265761.633851e-08
1.030841.7264661.642232e-08
1.036121.7263561.650655e-08
1.041441.7262461.659122e-08
1.046781.7261361.667632e-08
1.052151.7260271.676185e-08
1.057541.7259181.684783e-08
1.061.7258681.688700e-08
1.062971.7258091.693425e-08
1.068421.72571.702113e-08
1.07391.7255921.710844e-08
1.07941.7254831.719621e-08
1.084941.7253751.728443e-08
1.09051.7252671.737309e-08
1.09611.7251591.746222e-08
1.101721.7250511.755180e-08
1.107371.7249431.764184e-08
1.113051.7248351.773234e-08
1.118761.7247271.782330e-08
1.124491.7246191.791474e-08
1.130261.7245121.800664e-08
1.136061.7244041.809901e-08
1.141881.7242961.819185e-08
1.147741.7241891.828518e-08
1.153621.7240811.837898e-08
1.159541.7239731.847326e-08
1.165491.7238661.856802e-08
1.171471.7237581.866328e-08
1.177471.723651.875902e-08
1.183511.7235421.885525e-08
1.189581.7234341.895197e-08
1.195681.7233261.904919e-08
1.21.723251.911800e-08
1.201811.7232181.924821e-08
1.207981.723111.969060e-08
1.214171.7230012.013526e-08
1.22041.7228932.058219e-08
1.226661.7227842.103142e-08
1.232951.7226752.148295e-08
1.239271.7225662.193680e-08
1.245631.7224572.239298e-08
1.252021.7223472.285149e-08
1.258441.7222382.331236e-08
1.264891.7221282.377559e-08
1.271381.7220172.424119e-08
1.27791.7219072.470919e-08
1.284451.7217962.517958e-08
1.291041.7216852.565238e-08
1.297661.7215742.612762e-08
1.304321.7214622.660528e-08
1.311011.721352.708540e-08
1.317731.7212382.756798e-08
1.324491.7211252.805304e-08
1.331281.7210122.854058e-08
1.338111.7208992.903062e-08
1.344971.7207852.952318e-08
1.351871.7206713.001826e-08
1.35881.7205573.051588e-08
1.365771.7204423.101605e-08
1.372771.7203263.151879e-08
1.379811.720213.202411e-08
1.386891.7200943.253202e-08
1.3941.7199773.304253e-08
1.41.7198793.347300e-08
1.401151.719863.357411e-08
1.408341.7197423.420499e-08
1.415561.7196233.483911e-08
1.422821.7195053.547647e-08
1.430121.7193853.611711e-08
1.437451.7192653.676103e-08
1.444821.7191443.740825e-08
1.452231.7190233.805880e-08
1.459681.7189013.871268e-08
1.467171.7187793.936991e-08
1.474691.7186564.003051e-08
1.482251.7185324.069451e-08
1.489861.7184084.136190e-08
1.49751.7182834.203272e-08
1.505181.7181574.270698e-08
1.51291.718034.338470e-08
1.520651.7179034.406589e-08
1.528451.7177754.475058e-08
1.536291.7176464.543878e-08
1.544171.7175174.613051e-08
1.552091.7173864.682578e-08
1.560051.7172554.752462e-08
1.568051.7171234.822705e-08
1.576091.7169914.893308e-08
1.584181.7168574.964272e-08
1.59231.7167235.035601e-08
1.61.7165955.103200e-08
1.600471.7165875.131634e-08
1.608671.7164515.631904e-08
1.616921.7163146.134740e-08
1.625221.7161766.640155e-08
1.633551.7160377.148162e-08
1.641931.7158967.658774e-08
1.650351.7157558.172005e-08
1.658811.7156138.687868e-08
1.667321.715479.206377e-08
1.675871.7153269.727545e-08
1.684471.7151811.025139e-07
1.693111.7150351.077791e-07
1.701791.7148871.130714e-07
1.710521.7147391.183908e-07
1.719291.7145891.237375e-07
1.728111.7144391.291116e-07
1.736971.7142871.345133e-07
1.745881.7141341.399427e-07
1.754831.7139791.453999e-07
1.763831.7138241.508851e-07
1.772881.7136671.563985e-07
1.781971.7135091.619401e-07
1.791111.713351.675101e-07
1.81.7131941.729300e-07
1.800291.7131891.735321e-07
1.809531.7130271.924871e-07
1.818811.7128642.115393e-07
1.828131.7126992.306892e-07
1.837511.7125332.499373e-07
1.846931.7123652.692842e-07
1.856411.7121962.887303e-07
1.865931.7120263.082761e-07
1.87551.7118543.279221e-07
1.885111.7116813.476689e-07
1.894781.7115063.675170e-07
1.90451.7113293.874668e-07
1.914271.7111514.075190e-07
1.924081.7109714.276740e-07
1.933951.710794.479324e-07
1.943871.7106074.682946e-07
1.953841.7104234.887613e-07
1.963861.7102365.093330e-07
1.973931.7100485.300102e-07
1.984051.7098595.507934e-07
1.994231.7096675.716832e-07
21.7095585.835300e-07
2.004461.7094746.077506e-07
2.014741.7092796.636151e-07
2.025071.7090827.197661e-07
2.035461.7088837.762051e-07
2.045891.7086828.329335e-07
2.056391.7084798.899529e-07
2.066931.7082749.472646e-07
2.077531.7080681.004870e-06
2.088191.7078591.062772e-06
2.09891.7076481.120970e-06
2.109661.7074361.179466e-06
2.120481.7072211.238263e-06
2.131361.7070041.297361e-06
2.142291.7067841.356762e-06
2.153271.7065631.416468e-06
2.164321.7063391.476480e-06
2.175421.7061131.536800e-06
2.186571.7058851.597429e-06
2.197791.7056541.658369e-06
2.21.7056091.670400e-06
2.209061.7054221.927048e-06
2.220391.7051862.248066e-06
2.231771.7049482.570731e-06
2.243221.7047082.895050e-06
2.254721.7044663.221033e-06
2.266291.704223.548687e-06
2.277911.7039723.878022e-06
2.289591.7037224.209045e-06
2.301331.7034694.541767e-06
2.313141.7032134.876195e-06
2.3251.7029555.212337e-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
—