Optical constants

Refractive index of P-SF69 (SCHOTT)

P-SF69: n,k 0.365–2.5 µm

Data
formula 2 + tabulated k
Range
0.365–2.5 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.5 µm
Refractive index n
1.7225
Extinction coefficient k
1.16339e-08
Permittivity ε1
2.96699
Permittivity ε2
4.00786e-08
Absorption coefficient α
0.00248801 cm⁻¹
Penetration depth δ = λ/(2πk)
8.03854e+09 nm
Abbe number Vd
29.23
Chromatic dispersion dn/dλ
-0.124212 µm⁻¹
Group index ng
1.79548
Group velocity dispersion
251.014 fs²/mm
Dispersion parameter D
-1369.42 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

# P-SF69 (SCHOTT): P-SF69
schott_p_sf69 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "P-SF69", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_p_sf69.range_nm)  # (365, 2500) nm
eps = schott_p_sf69.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=1.62594647λ2λ2−0.0121696677+0.235927609λ2λ2−0.0600710405+1.67434623λ2λ2−145.651908

Valid from 0.365 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.62594647
C30.0121696677
C40.235927609
C50.0600710405
C61.67434623
C7145.651908

Comments and conditions

suitable for precision molding

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -2.55e-06 5.68e-09 -2.85e-11 9.5e-07 1.54e-09 0.275
nd
1.7225
Vd
29.23
glass code
723292.293
glass status
standard
density
value: 2934
thermal expansion
value: 8.99e-06, temperature range: 243 343; value: 1.113e-05, temperature range: 293 573
dPgF
0.0104

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 2.11e-07 K⁻¹ at 633 nm, dn/dT = -1.08e-06 K⁻¹ at 1310 nm, dn/dT = -1.17e-06 K⁻¹ at 1550 nm

References

Cite

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com); See also SCHOTT 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 418 wavelengths, the same grid as the API and the library
P-SF69 (SCHOTT), P-SF69: n and k versus wavelength
λ (µm)nk
0.3651.7937485.472800e-06
0.3667641.7923264.591252e-06
0.3685371.7909313.705442e-06
0.371.7898062.974700e-06
0.3703191.7895642.916149e-06
0.3721091.7882222.587513e-06
0.3739081.7869062.257289e-06
0.3757151.7856151.925468e-06
0.3775321.7843471.592044e-06
0.3793571.7831031.257007e-06
0.381.7826711.138900e-06
0.381191.7818811.064723e-06
0.3830331.7806819.499083e-07
0.3848851.7795038.345381e-07
0.3867451.7783457.186102e-07
0.3886151.7772086.021220e-07
0.391.7763815.158200e-07
0.3904941.776095.043854e-07
0.3923811.7749924.606480e-07
0.3942781.7739124.166992e-07
0.3961841.7728513.725379e-07
0.3980991.7718073.281631e-07
0.41.7707932.841200e-07
0.4000241.7707812.838402e-07
0.4019571.7697712.608866e-07
0.40391.7687792.378221e-07
0.4051.7682262.247700e-07
0.4058531.7678022.191585e-07
0.4078151.7668412.062504e-07
0.4097861.7658951.932798e-07
0.4117671.7649651.802466e-07
0.4137581.7640491.671503e-07
0.4157581.7631471.539908e-07
0.4177681.762261.407676e-07
0.4197871.7613861.274805e-07
0.421.7612951.260800e-07
0.4218161.7605251.215155e-07
0.4238561.7596781.163914e-07
0.4259041.7588431.112425e-07
0.4279631.7580211.060687e-07
0.4300321.7572121.008699e-07
0.4321111.7564149.564601e-08
0.43421.7556289.039684e-08
0.4361.7549638.587300e-08
0.4362991.7548538.547234e-08
0.4384081.754098.264359e-08
0.4405271.7533387.980117e-08
0.4426571.7525977.694502e-08
0.4447971.7518667.407505e-08
0.4469471.7511467.119121e-08
0.4491071.7504356.829343e-08
0.4512781.7497356.538165e-08
0.453461.7490456.245578e-08
0.4556521.7483645.951578e-08
0.4578551.7476935.656156e-08
0.461.7470515.368400e-08
0.4600681.7470315.363926e-08
0.4622921.7463785.217169e-08
0.4645271.7457335.069704e-08
0.4667721.7450984.921525e-08
0.4690291.7444714.772630e-08
0.4712961.7438534.623015e-08
0.4735741.7432424.472677e-08
0.4758631.742644.321613e-08
0.4781641.7420464.169818e-08
0.4804751.741464.017289e-08
0.4827981.7408813.864023e-08
0.4851321.740313.710016e-08
0.4874771.7397463.555264e-08
0.4898331.739193.399765e-08
0.4922011.738643.243514e-08
0.4945811.7380983.086507e-08
0.4969721.7375632.928742e-08
0.4993741.7370342.770213e-08
0.51.7368982.728900e-08
0.5017881.7365122.677093e-08
0.5042141.7359972.606806e-08
0.5066511.7354882.536180e-08
0.50911.7349852.465212e-08
0.5115611.7344892.393901e-08
0.5140341.7339992.322245e-08
0.5165191.7335142.250243e-08
0.5190161.7330362.177893e-08
0.5215251.7325642.105193e-08
0.5240461.7320972.032142e-08
0.5265791.7316361.958737e-08
0.5291251.731181.884978e-08
0.5316831.730731.810862e-08
0.5342531.7302861.736388e-08
0.5368351.7298461.661554e-08
0.5394311.7294121.586358e-08
0.5420381.7289831.510798e-08
0.5446581.7285591.434874e-08
0.5461.7283451.396000e-08
0.5472911.728141.385179e-08
0.5499371.7277261.363010e-08
0.5525951.7273171.340734e-08
0.5552671.7269121.318350e-08
0.5579511.7265121.295858e-08
0.5606481.7261171.273258e-08
0.5633581.7257261.250548e-08
0.5660821.725341.227728e-08
0.5688181.7249581.204798e-08
0.5715681.7245811.181757e-08
0.5743311.7242071.158604e-08
0.5771071.7238381.135340e-08
0.5798971.7234731.111964e-08
0.581.723461.111100e-08
0.58271.7231131.129677e-08
0.5855171.7227561.149057e-08
0.5883471.7224031.168531e-08
0.5911921.7220541.188098e-08
0.5940491.7217091.207760e-08
0.5969211.7213671.227517e-08
0.5998071.721031.247370e-08
0.6027061.7206961.267319e-08
0.605621.7203651.287364e-08
0.6085471.7200381.307506e-08
0.6114891.7197151.327745e-08
0.6144451.7193951.348082e-08
0.6174151.7190791.368518e-08
0.621.7188081.386300e-08
0.62041.7187661.387195e-08
0.6233991.7184561.393905e-08
0.6264131.718151.400648e-08
0.6294411.7178471.407424e-08
0.6324831.7175471.414232e-08
0.6355411.717251.421073e-08
0.6386131.7169561.427947e-08
0.64171.7166651.434854e-08
0.6448021.7163771.441795e-08
0.6479191.7160931.448770e-08
0.6510511.7158111.455778e-08
0.6541991.7155321.462820e-08
0.6573611.7152561.469896e-08
0.661.7150281.475800e-08
0.6605391.7149821.473983e-08
0.6637321.7147121.463214e-08
0.666941.7144441.452393e-08
0.6701651.7141791.441520e-08
0.6734041.7139161.430594e-08
0.6766591.7136561.419616e-08
0.679931.7133991.408585e-08
0.6832171.7131441.397500e-08
0.686521.7128921.386361e-08
0.6898391.7126421.375169e-08
0.6931731.7123941.363923e-08
0.6965241.7121491.352622e-08
0.6998911.7119071.341266e-08
0.71.7118991.340900e-08
0.7032751.7116661.334847e-08
0.7066741.7114281.328563e-08
0.710091.7111921.322249e-08
0.7135231.7109591.315904e-08
0.7169721.7107271.309529e-08
0.7204381.7104981.303123e-08
0.7239211.7102711.296686e-08
0.727421.7100461.290217e-08
0.7309371.7098231.283718e-08
0.734471.7096031.277187e-08
0.7380211.7093841.270624e-08
0.7415881.7091671.264030e-08
0.7451731.7089521.257404e-08
0.7487751.708741.250745e-08
0.7523951.7085291.244055e-08
0.7560321.708321.237332e-08
0.7596871.7081121.230577e-08
0.7633591.7079071.223789e-08
0.7670491.7077031.216968e-08
0.7707571.7075021.210115e-08
0.7744831.7073021.203228e-08
0.7782271.7071031.196308e-08
0.7819891.7069071.189354e-08
0.7857691.7067121.182367e-08
0.7895681.7065191.175346e-08
0.7933851.7063271.168291e-08
0.797221.7061371.161202e-08
0.8010741.7059491.154079e-08
0.8049461.7057621.146921e-08
0.8088371.7055771.139729e-08
0.8127471.7053931.132502e-08
0.8166761.7052111.125240e-08
0.8206241.705031.117943e-08
0.8245911.7048511.110611e-08
0.8285771.7046731.103243e-08
0.8325831.7044961.095839e-08
0.8366071.7043211.088400e-08
0.8406521.7041471.080925e-08
0.8447151.7039751.073414e-08
0.8487991.7038041.065866e-08
0.8529021.7036341.058282e-08
0.8570251.7034661.050661e-08
0.8611681.7032991.043004e-08
0.8653311.7031331.035309e-08
0.8695141.7029681.027577e-08
0.8737171.7028051.019808e-08
0.8779411.7026421.012001e-08
0.8821851.7024811.004157e-08
0.8864491.7023219.962742e-09
0.8907351.7021639.883536e-09
0.895041.7020059.803948e-09
0.8993671.7018489.723975e-09
0.9037151.7016939.643616e-09
0.9080831.7015389.562868e-09
0.9124731.7013859.481730e-09
0.9168841.7012339.400199e-09
0.9213161.7010819.318274e-09
0.925771.7009319.235954e-09
0.9302451.7007829.153235e-09
0.9347421.7006339.070117e-09
0.9392611.7004868.986596e-09
0.9438011.7003398.902672e-09
0.9483641.7001948.818343e-09
0.9529481.7000498.733605e-09
0.9575551.6999058.648458e-09
0.9621841.6997628.562900e-09
0.9668351.699628.476927e-09
0.9715091.6994798.390540e-09
0.9762051.6993398.303734e-09
0.9809241.6991998.216509e-09
0.9856661.699068.128862e-09
0.9904311.6989228.040792e-09
0.9952191.6987857.952296e-09
1.000031.6986487.863372e-09
1.004861.6985127.774018e-09
1.009721.6983777.684233e-09
1.01461.6982437.594013e-09
1.019511.6981097.503357e-09
1.024441.6979767.412263e-09
1.029391.6978447.320728e-09
1.034361.6977127.228751e-09
1.039361.6975817.136330e-09
1.044391.697457.043461e-09
1.049441.697326.950144e-09
1.054511.6971916.856376e-09
1.059611.6970626.762154e-09
1.061.6970526.754900e-09
1.064731.6969347.527252e-09
1.069881.6968068.367733e-09
1.075051.6966799.212278e-09
1.080251.6965531.006090e-08
1.085471.6964271.091363e-08
1.090711.6963011.177049e-08
1.095991.6961761.263148e-08
1.101291.6960511.349663e-08
1.106611.6959271.436597e-08
1.111961.6958031.523951e-08
1.117331.695681.611728e-08
1.122741.6955571.699928e-08
1.128161.6954341.788555e-08
1.133621.6953121.877611e-08
1.13911.6951911.967097e-08
1.14461.6950692.057015e-08
1.150141.6949482.147368e-08
1.15571.6948272.238158e-08
1.161281.6947072.329387e-08
1.16691.6945872.421057e-08
1.172541.6944672.513170e-08
1.17821.6943482.605728e-08
1.18391.6942292.698734e-08
1.189621.694112.792189e-08
1.195371.6939912.886096e-08
1.201151.6938722.980457e-08
1.206961.6937543.075274e-08
1.212791.6936363.170550e-08
1.218661.6935183.266286e-08
1.224551.6934013.362485e-08
1.230471.6932833.459149e-08
1.236421.6931663.556280e-08
1.242391.6930493.653881e-08
1.24841.6929323.751953e-08
1.254431.6928153.850500e-08
1.26051.6926993.949523e-08
1.266591.6925824.049025e-08
1.272711.6924654.149008e-08
1.278871.6923494.249474e-08
1.285051.6922334.350425e-08
1.291261.6921164.451865e-08
1.29751.6924.553795e-08
1.303771.6918844.656218e-08
1.310081.6917684.759136e-08
1.316411.6916514.862551e-08
1.322771.6915354.966466e-08
1.329171.6914195.070884e-08
1.335591.6913035.175807e-08
1.342051.6911865.281236e-08
1.348541.691075.387176e-08
1.355061.6909545.493627e-08
1.361611.6908375.600593e-08
1.368191.6907215.708076e-08
1.37481.6906045.816079e-08
1.381451.6904875.924604e-08
1.388131.690376.033653e-08
1.394841.6902546.143230e-08
1.401581.6901366.253336e-08
1.408351.6900196.363974e-08
1.415161.6899026.475148e-08
1.4221.6897846.586858e-08
1.428881.6896666.699109e-08
1.435781.6895486.811903e-08
1.442731.689436.925241e-08
1.44971.6893117.039128e-08
1.456711.6891937.153565e-08
1.463751.6890747.268555e-08
1.470831.6889547.384101e-08
1.477941.6888357.500206e-08
1.485081.6887157.616872e-08
1.492261.6885957.734102e-08
1.499471.6884757.851899e-08
1.506721.6883547.970265e-08
1.5141.6882338.089203e-08
1.521321.6881118.208716e-08
1.528681.687998.328807e-08
1.531.6879688.350400e-08
1.536071.6878689.242927e-08
1.543491.6877451.033522e-07
1.550951.6876221.143280e-07
1.558451.6874991.253568e-07
1.565991.6873751.364389e-07
1.573561.6872511.475746e-07
1.581161.6871261.587642e-07
1.588811.6870011.700078e-07
1.596491.6868751.813058e-07
1.60421.6867491.926584e-07
1.611961.6866232.040659e-07
1.619751.6864952.155285e-07
1.627581.6863682.270465e-07
1.635451.686242.386202e-07
1.643351.6861112.502499e-07
1.65131.6859822.619357e-07
1.659281.6858522.736781e-07
1.66731.6857212.854772e-07
1.675361.685592.973334e-07
1.683461.6854583.092469e-07
1.69161.6853263.212180e-07
1.699781.6851933.332469e-07
1.707991.6850593.453340e-07
1.716251.6849253.574795e-07
1.724551.684793.696837e-07
1.732881.6846543.819470e-07
1.741261.6845183.942695e-07
1.749681.6843814.066516e-07
1.758131.6842434.190935e-07
1.766631.6841044.315956e-07
1.775171.6839644.441581e-07
1.783761.6838244.567813e-07
1.792381.6836834.694656e-07
1.801041.6835414.822112e-07
1.809751.6833984.950184e-07
1.81851.6832555.078875e-07
1.827291.683115.208188e-07
1.836121.6829655.338126e-07
1.8451.6828195.468692e-07
1.853921.6826725.599890e-07
1.862881.6825235.731722e-07
1.871881.6823745.864191e-07
1.880931.6822245.997300e-07
1.890021.6820736.131053e-07
1.899161.6819216.265453e-07
1.908341.6817686.400502e-07
1.917571.6816146.536204e-07
1.926841.6814596.672562e-07
1.936151.6813036.809579e-07
1.945511.6811466.947258e-07
1.954921.6809887.085603e-07
1.964371.6808287.224617e-07
1.971.6807337.307500e-07
1.973861.6806687.538477e-07
1.98341.6805068.109224e-07
1.992991.6803438.682730e-07
2.002631.6801799.259009e-07
2.012311.6800149.838073e-07
2.022031.6798481.041994e-06
2.031811.679681.100461e-06
2.041631.6795111.159212e-06
2.05151.6793411.218246e-06
2.061421.6791691.277565e-06
2.071381.6789961.337172e-06
2.08141.6788221.397066e-06
2.091461.6786471.457250e-06
2.101571.678471.517725e-06
2.111731.6782921.578493e-06
2.121931.6781121.639554e-06
2.132191.6779311.700910e-06
2.14251.6777481.762563e-06
2.152861.6775641.824514e-06
2.163261.6773791.886764e-06
2.173721.6771921.949316e-06
2.184231.6770032.012169e-06
2.194791.6768132.075327e-06
2.20541.6766212.138790e-06
2.216061.6764282.202559e-06
2.226771.6762332.266637e-06
2.237541.6760372.331025e-06
2.248351.6758392.395724e-06
2.259221.6756392.460735e-06
2.270141.6754372.526061e-06
2.281121.6752342.591703e-06
2.292141.6750292.657662e-06
2.303221.6748222.723940e-06
2.314361.6746132.790538e-06
2.3251.6744132.854200e-06
2.325541.6744032.858809e-06
2.336791.674192.953921e-06
2.348081.6739763.049494e-06
2.359431.673763.145528e-06
2.370841.6735423.242027e-06
2.38231.6733223.338992e-06
2.393821.67313.436425e-06
2.405391.6728763.534330e-06
2.417021.672653.632708e-06
2.42871.6724213.731562e-06
2.440441.6721913.830893e-06
2.452241.6719593.930705e-06
2.464091.6717244.030999e-06
2.4761.6714884.131778e-06
2.487971.6712494.233044e-06
2.51.6710084.334800e-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
—