Optical constants

Refractive index of N-BAF10 (SCHOTT)

N-BAF10: n,k 0.35–2.5 µm

Data
formula 2 + tabulated k
Range
0.35–2.5 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.35–2.5 µm
Refractive index n
1.67003
Extinction coefficient k
1.84195e-08
Permittivity ε1
2.78899
Permittivity ε2
6.15222e-08
Absorption coefficient α
0.00393919 cm⁻¹
Penetration depth δ = λ/(2πk)
5.07719e+09 nm
Abbe number Vd
47.112
Chromatic dispersion dn/dλ
-0.0727993 µm⁻¹
Group index ng
1.7128
Group velocity dispersion
134.568 fs²/mm
Dispersion parameter D
-734.139 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

# N-BAF10 (SCHOTT): N-BAF10
schott_n_baf10 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "N-BAF10", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_n_baf10.range_nm)  # (350, 2500) nm
eps = schott_n_baf10.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=1.5851495λ2λ2−0.00926681282+0.143559385λ2λ2−0.0424489805+1.08521269λ2λ2−105.613573

Valid from 0.35 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.5851495
C30.00926681282
C40.143559385
C50.0424489805
C61.08521269
C7105.613573

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 3.79e-06 1.28e-08 -1.42e-11 5.84e-07 7.6e-10 0.22
nd
1.67003
Vd
47.11
glass code
670471.375
glass status
standard
density
value: 3745
thermal expansion
value: 6.18e-06, temperature range: 243 343; value: 7.04e-06, temperature range: 293 573
dPgF
-0.0016
resistance
acid: 4.3; stain: 0.0; alkali: 1.3; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 2.91e-06 K⁻¹ at 633 nm, dn/dT = 2.16e-06 K⁻¹ at 1310 nm, dn/dT = 2.10e-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 419 wavelengths, the same grid as the API and the library
N-BAF10 (SCHOTT), N-BAF10: n and k versus wavelength
λ (µm)nk
0.351.7126885.130500e-06
0.3517291.7119514.695989e-06
0.3534661.7112254.259331e-06
0.3552121.7105093.820516e-06
0.3569671.7098043.379534e-06
0.358731.7091092.936373e-06
0.3605021.7084242.491023e-06
0.3622831.7077492.043474e-06
0.3640731.7070831.593713e-06
0.3651.7067431.360700e-06
0.3658711.7064271.292080e-06
0.3676791.705781.149739e-06
0.3694951.7051421.006696e-06
0.371.7049669.669100e-07
0.371321.7045129.056186e-07
0.3731541.7038928.204533e-07
0.3749981.703287.348674e-07
0.376851.7026766.488587e-07
0.3787121.7020815.624251e-07
0.381.7016755.026000e-07
0.3805821.7014944.894645e-07
0.3824621.7009144.470539e-07
0.3843521.7003434.044338e-07
0.386251.6997783.616032e-07
0.3881581.6992223.185610e-07
0.391.6986942.770100e-07
0.3900761.6986732.761471e-07
0.3920021.6981312.541325e-07
0.3939391.6975962.320091e-07
0.3958851.6970682.097765e-07
0.397841.6965471.874340e-07
0.3998061.6960331.649812e-07
0.41.6959821.627600e-07
0.4017811.6955251.531701e-07
0.4037651.6950241.424805e-07
0.4051.6947161.358300e-07
0.405761.6945291.331401e-07
0.4077641.694041.260435e-07
0.4097781.6935581.189118e-07
0.4118031.6930821.117449e-07
0.4138371.6926111.045426e-07
0.4158811.6921479.730468e-08
0.4179351.6916889.003104e-08
0.421.6912358.272147e-08
0.421.6912358.272100e-08
0.4220751.6907888.046932e-08
0.424161.6903467.820637e-08
0.4262551.689917.593224e-08
0.428361.6894797.364688e-08
0.4304761.6890537.135022e-08
0.4326031.6886326.904223e-08
0.434741.6882176.672283e-08
0.4361.6879756.535500e-08
0.4368871.6878066.475535e-08
0.4390451.68746.329682e-08
0.4412141.6876.183109e-08
0.4433941.6866036.035811e-08
0.4455841.6862125.887786e-08
0.4477851.6858255.739030e-08
0.4499971.6854435.589539e-08
0.452221.6850665.439310e-08
0.4544541.6846935.288338e-08
0.4566991.6843245.136621e-08
0.4589551.6839594.984154e-08
0.461.6837924.913500e-08
0.4612221.6835994.856676e-08
0.46351.6832434.750706e-08
0.465791.6828914.644211e-08
0.468091.6825434.537191e-08
0.4704031.6821994.429643e-08
0.4727261.6818594.321562e-08
0.4750621.6815224.212949e-08
0.4774081.681194.103798e-08
0.4797671.6808613.994108e-08
0.4821361.6805363.883877e-08
0.4845181.6802153.773101e-08
0.4869121.6798983.661778e-08
0.4893171.6795833.549905e-08
0.4917341.6792733.437479e-08
0.4941631.6789663.324498e-08
0.4966041.6786623.210959e-08
0.4990571.6783623.096859e-08
0.51.6782473.053000e-08
0.5015221.6780643.009770e-08
0.5041.6777712.939418e-08
0.5064891.677482.868717e-08
0.5089911.6771932.797668e-08
0.5115061.6769082.726267e-08
0.5140321.6766272.654514e-08
0.5165711.6763492.582406e-08
0.5191231.6760742.509943e-08
0.5216881.6758012.437121e-08
0.5242651.6755322.363939e-08
0.5268541.6752662.290396e-08
0.5294571.6750022.216490e-08
0.5320721.6747412.142218e-08
0.5347011.6744832.067580e-08
0.5373421.6742281.992573e-08
0.5399961.6739751.917196e-08
0.5426641.6737251.841446e-08
0.5453441.6734781.765322e-08
0.5461.6734181.746700e-08
0.5480381.6732331.753222e-08
0.5507451.6729911.761885e-08
0.5534661.6727511.770591e-08
0.55621.6725141.779340e-08
0.5589471.6722791.788131e-08
0.5617081.6720461.796967e-08
0.5644831.6718161.805846e-08
0.5672721.6715891.814769e-08
0.5700741.6713631.823736e-08
0.572891.671141.832747e-08
0.575721.6709191.841803e-08
0.5785641.6707011.850904e-08
0.581.6705911.855500e-08
0.5814221.6704841.852966e-08
0.5842941.670271.847847e-08
0.587181.6700581.842702e-08
0.590081.6698481.837532e-08
0.5929951.669641.832336e-08
0.5959251.6694341.827114e-08
0.5988681.669231.821867e-08
0.6018271.6690281.816594e-08
0.6047991.6688281.811295e-08
0.6077871.668631.805970e-08
0.6107891.6684341.800618e-08
0.6138061.668241.795240e-08
0.6168391.6680471.789835e-08
0.6198861.6678571.784404e-08
0.621.667851.784200e-08
0.6229481.6676681.808312e-08
0.6260251.6674811.833483e-08
0.6291171.6672961.858779e-08
0.6322251.6671131.884200e-08
0.6353481.6669311.909747e-08
0.6384861.6667511.935419e-08
0.641641.6665731.961219e-08
0.644811.6663971.987146e-08
0.6479951.6662222.013201e-08
0.6511961.6660482.039384e-08
0.6544131.6658772.065698e-08
0.6576461.6657062.092141e-08
0.661.6655842.111400e-08
0.6608941.6655382.094176e-08
0.6641591.6653712.031291e-08
0.667441.6652051.968095e-08
0.6707371.6650411.904586e-08
0.674051.6648781.840764e-08
0.677381.6647171.776627e-08
0.6807261.6645571.712173e-08
0.6840881.6643991.647400e-08
0.6874671.6642421.582308e-08
0.6908631.6640861.516894e-08
0.6942761.6639321.451157e-08
0.6977061.6637791.385095e-08
0.71.6636771.340900e-08
0.7011521.6636271.343107e-08
0.7046161.6634771.349742e-08
0.7080961.6633281.356409e-08
0.7115941.663181.363109e-08
0.7151091.6630331.369843e-08
0.7186421.6628881.376609e-08
0.7221921.6627431.383409e-08
0.7257591.66261.390243e-08
0.7293441.6624591.397110e-08
0.7329471.6623181.404012e-08
0.7365681.6621781.410947e-08
0.7402061.662041.417917e-08
0.7438621.6619031.424921e-08
0.7475371.6617671.431960e-08
0.751231.6616311.439033e-08
0.754941.6614971.446142e-08
0.758671.6613641.453285e-08
0.7624171.6612321.460464e-08
0.7661841.6611011.467678e-08
0.7699681.6609711.474928e-08
0.7737721.6608421.482214e-08
0.7775941.6607141.489536e-08
0.7814351.6605871.496894e-08
0.7852951.6604611.504288e-08
0.7891741.6603361.511719e-08
0.7930731.6602111.519186e-08
0.796991.6600881.526690e-08
0.8009271.6599651.534232e-08
0.8048841.6598441.541810e-08
0.808861.6597231.549427e-08
0.8128551.6596031.557080e-08
0.816871.6594841.564772e-08
0.8209061.6593651.572501e-08
0.8249611.6592481.580269e-08
0.8290361.6591311.588075e-08
0.8331311.6590151.595920e-08
0.8372471.65891.603803e-08
0.8413821.6587851.611726e-08
0.8455391.6586711.619687e-08
0.8497151.6585581.627688e-08
0.8539131.6584461.635728e-08
0.8581311.6583341.643808e-08
0.862371.6582231.651928e-08
0.866631.6581131.660088e-08
0.8709111.6580041.668289e-08
0.8752131.6578951.676530e-08
0.8795361.6577861.684811e-08
0.8838811.6576791.693134e-08
0.8882471.6575711.701497e-08
0.8926351.6574651.709902e-08
0.8970441.6573591.718349e-08
0.9014751.6572541.726837e-08
0.9059281.6571491.735367e-08
0.9104031.6570451.743939e-08
0.9149011.6569411.752554e-08
0.919421.6568381.761211e-08
0.9239621.6567351.769911e-08
0.9285261.6566331.778654e-08
0.9331131.6565321.787440e-08
0.9377221.6564311.796269e-08
0.9423541.656331.805143e-08
0.9470091.656231.814059e-08
0.9516871.656131.823020e-08
0.9563881.6560311.832026e-08
0.9611121.6559321.841075e-08
0.965861.6558341.850170e-08
0.9706311.6557361.859309e-08
0.9754261.6556381.868494e-08
0.9802441.6555411.877723e-08
0.9850861.6554441.886999e-08
0.9899531.6553481.896320e-08
0.9948431.6552521.905688e-08
0.9997571.6551561.915101e-08
1.00471.6550611.924561e-08
1.009661.6549661.934068e-08
1.014651.6548711.943622e-08
1.019661.6547771.953223e-08
1.024691.6546821.962871e-08
1.029761.6545891.972567e-08
1.034841.6544951.982311e-08
1.039961.6544021.992103e-08
1.045091.6543092.001944e-08
1.050251.6542162.011833e-08
1.055441.6541242.021771e-08
1.061.6540432.030500e-08
1.060661.6540312.041408e-08
1.06591.6539392.128455e-08
1.071161.6538472.215931e-08
1.076451.6537562.303839e-08
1.081771.6536642.392182e-08
1.087111.6535732.480961e-08
1.092481.6534822.570179e-08
1.097881.6533912.659837e-08
1.10331.65332.749938e-08
1.108751.653212.840485e-08
1.114231.6531192.931478e-08
1.119731.6530293.022921e-08
1.125271.6529393.114816e-08
1.130821.6528493.207165e-08
1.136411.6527583.299970e-08
1.142021.6526693.393233e-08
1.147671.6525793.486957e-08
1.153331.6524893.581144e-08
1.159031.6523993.675797e-08
1.164761.6523093.770916e-08
1.170511.652223.866506e-08
1.176291.652133.962568e-08
1.18211.6520414.059104e-08
1.187941.6519514.156118e-08
1.193811.6518614.253610e-08
1.199711.6517724.351584e-08
1.205631.6516824.450042e-08
1.211591.6515934.548987e-08
1.217571.6515034.648420e-08
1.223591.6514134.748344e-08
1.229631.6513234.848762e-08
1.235711.6512344.949676e-08
1.241811.6511445.051089e-08
1.247951.6510545.153002e-08
1.254111.6509645.255419e-08
1.260311.6508735.358342e-08
1.266531.6507835.461773e-08
1.272791.6506935.565715e-08
1.279071.6506025.670171e-08
1.285391.6505115.775142e-08
1.291741.6504215.880633e-08
1.298121.650335.986644e-08
1.304541.6502386.093179e-08
1.310981.6501476.200240e-08
1.317461.6500566.307830e-08
1.323961.6499646.415951e-08
1.33051.6498726.524607e-08
1.337081.649786.633799e-08
1.343681.6496876.743531e-08
1.350321.6495956.853804e-08
1.356991.6495026.964623e-08
1.363691.6494097.075989e-08
1.370431.6493167.187905e-08
1.37721.6492227.300373e-08
1.3841.6491287.413398e-08
1.390841.6490347.526981e-08
1.397711.6489397.641124e-08
1.404611.6488447.755832e-08
1.411551.6487497.871106e-08
1.418521.6486547.986950e-08
1.425531.6485588.103366e-08
1.432571.6484628.220357e-08
1.439651.6483658.337926e-08
1.446761.6482688.456075e-08
1.453911.6481718.574808e-08
1.461091.6480738.694128e-08
1.468311.6479758.814037e-08
1.475561.6478768.934539e-08
1.482851.6477779.055636e-08
1.490171.6476789.177331e-08
1.497531.6475789.299627e-08
1.504931.6474779.422527e-08
1.512371.6473779.546034e-08
1.519841.6472759.670152e-08
1.527341.6471739.794882e-08
1.531.6471379.839000e-08
1.534891.6470711.031067e-07
1.542471.6469681.104210e-07
1.550091.6468651.177716e-07
1.557751.6467611.251584e-07
1.565441.6466561.325817e-07
1.573181.6465511.400417e-07
1.580951.6464461.475385e-07
1.588761.646341.550723e-07
1.59661.6462331.626434e-07
1.604491.6461251.702519e-07
1.612421.6460171.778980e-07
1.620381.6459091.855818e-07
1.628391.6457991.933036e-07
1.636431.6456892.010635e-07
1.644511.6455792.088618e-07
1.652641.6454672.166985e-07
1.66081.6453552.245740e-07
1.6691.6452432.324884e-07
1.677251.6451292.404419e-07
1.685531.6450152.484347e-07
1.693861.64492.564670e-07
1.702231.6447842.645389e-07
1.710641.6446682.726507e-07
1.719091.6445512.808026e-07
1.727581.6444332.889948e-07
1.736111.6443142.972274e-07
1.744691.6441943.055007e-07
1.753311.6440743.138148e-07
1.761971.6439523.221700e-07
1.770671.643833.305665e-07
1.779421.6437073.390045e-07
1.788211.6435833.474842e-07
1.797041.6434583.560057e-07
1.805921.6433323.645694e-07
1.814841.6432053.731753e-07
1.82381.6430773.818238e-07
1.832811.6429493.905149e-07
1.841871.6428193.992490e-07
1.850961.6426884.080263e-07
1.860111.6425574.168469e-07
1.86931.6424244.257111e-07
1.878531.642294.346190e-07
1.887811.6421554.435710e-07
1.897141.6420194.525672e-07
1.906511.6418824.616078e-07
1.915921.6417444.706931e-07
1.925391.6416054.798233e-07
1.93491.6414654.889985e-07
1.944461.6413234.982191e-07
1.954061.641185.074853e-07
1.963721.6410365.167972e-07
1.971.6409425.228600e-07
1.973421.6408915.452911e-07
1.983161.6407456.093091e-07
1.992961.6405976.736433e-07
2.00281.6404487.382953e-07
2.01271.6402988.032666e-07
2.022641.6401478.685589e-07
2.032631.6399949.341738e-07
2.042671.639841.000113e-06
2.052761.6396851.066377e-06
2.06291.6395281.132969e-06
2.073091.639371.199890e-06
2.083331.639211.267142e-06
2.093631.6390491.334726e-06
2.103971.6388861.402643e-06
2.114361.6387221.470896e-06
2.12481.6385571.539486e-06
2.13531.638391.608416e-06
2.145851.6382221.677685e-06
2.156451.6380511.747297e-06
2.16711.637881.817252e-06
2.177811.6377071.887554e-06
2.188561.6375321.958202e-06
2.199371.6373552.029199e-06
2.210241.6371772.100547e-06
2.221161.6369972.172248e-06
2.232131.6368162.244303e-06
2.243161.6366322.316713e-06
2.254241.6364472.389482e-06
2.265371.6362612.462610e-06
2.276561.6360722.536099e-06
2.287811.6358812.609951e-06
2.299111.6356892.684168e-06
2.310471.6354952.758751e-06
2.321881.6352992.833703e-06
2.3251.6352452.854200e-06
2.333351.6351013.021173e-06
2.344871.6349013.251703e-06
2.356461.6346993.483372e-06
2.36811.6344953.716185e-06
2.37981.6342893.950149e-06
2.391551.6340814.185268e-06
2.403371.6338714.421549e-06
2.415241.6336584.658997e-06
2.427171.6334444.897617e-06
2.439161.6332275.137417e-06
2.451211.6330085.378401e-06
2.463311.6327875.620575e-06
2.475481.6325645.863946e-06
2.487711.6323386.108519e-06
2.51.632116.354300e-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
—