Optical constants

Refractive index of SF5 (SCHOTT)

SF5: 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
1.67269
Extinction coefficient k
7.87323e-09
Permittivity ε1
2.7979
Permittivity ε2
2.63390e-08
Absorption coefficient α
0.00168376 cm⁻¹
Penetration depth δ = λ/(2πk)
1.18782e+10 nm
Abbe number Vd
32.21
Chromatic dispersion dn/dλ
-0.10549 µm⁻¹
Group index ng
1.73468
Group velocity dispersion
209.537 fs²/mm
Dispersion parameter D
-1143.13 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

# SF5 (SCHOTT): SF5
schott_sf5 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "SF5", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_sf5.range_nm)  # (350, 2500) nm
eps = schott_sf5.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=1.46141885λ2λ2−0.0111826126+0.247713019λ2λ2−0.0508594669+0.949995832λ2λ2−112.041888

Valid from 0.35 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.46141885
C30.0111826126
C40.247713019
C50.0508594669
C60.949995832
C7112.041888

Comments and conditions

lead containing glass type

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 2.59e-06 1.76e-08 -2.03e-11 1.17e-06 1.09e-09 0.255
nd
1.6727
Vd
32.21
glass code
673322.407
glass status
standard
density
value: 4070
thermal expansion
value: 8.2e-06, temperature range: 243 343; value: 9e-06, temperature range: 293 573
dPgF
0.0023
resistance
acid: 2.0; stain: 1.0; alkali: 2.3; climatic: 1.0; phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 3.25e-06 K⁻¹ at 633 nm, dn/dT = 1.71e-06 K⁻¹ at 1310 nm, dn/dT = 1.60e-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
SF5 (SCHOTT), SF5: n and k versus wavelength
λ (µm)nk
0.351.7409081.304800e-06
0.3517291.7396091.196551e-06
0.3534661.7383331.087768e-06
0.3552121.7370829.784473e-07
0.3569671.7358538.685866e-07
0.358731.7346467.581832e-07
0.3605021.733466.472344e-07
0.3622831.7322965.357376e-07
0.3640731.7311514.236900e-07
0.3651.7305693.656400e-07
0.3658711.7300273.477214e-07
0.3676791.7289223.105521e-07
0.3694951.7278362.731992e-07
0.371.7275382.628100e-07
0.371321.7267692.485283e-07
0.3731541.7257192.286838e-07
0.3749981.7246872.087412e-07
0.376851.7236721.887001e-07
0.3787121.7226741.685600e-07
0.381.7219951.546200e-07
0.3805821.7216921.516440e-07
0.3824621.7207251.420354e-07
0.3843521.7197751.323793e-07
0.386251.7188391.226756e-07
0.3881581.7179191.129239e-07
0.391.7170481.035100e-07
0.3900761.7170131.032215e-07
0.3920021.7161219.586060e-08
0.3939391.7152438.846337e-08
0.3958851.7143788.102959e-08
0.397841.7135277.355909e-08
0.3998061.7126896.605169e-08
0.41.7126076.530900e-08
0.4017811.7118646.127077e-08
0.4037651.7110515.676947e-08
0.4051.7105535.396900e-08
0.405761.710255.308893e-08
0.4077641.7094615.076708e-08
0.4097781.7086844.843377e-08
0.4118031.7079184.608892e-08
0.4138371.7071634.373250e-08
0.4158811.706424.136443e-08
0.4179351.7056873.898467e-08
0.421.7049643.659315e-08
0.421.7049643.659300e-08
0.4220751.7042523.511695e-08
0.424161.7035513.363351e-08
0.4262551.7028593.214274e-08
0.428361.7021773.064460e-08
0.4304761.7015042.913907e-08
0.4326031.7008412.762610e-08
0.434741.7001872.610566e-08
0.4361.6998072.520900e-08
0.4368871.6995422.493054e-08
0.4390451.6989062.425325e-08
0.4412141.6982782.357262e-08
0.4433941.697662.288862e-08
0.4455841.6970492.220125e-08
0.4477851.6964472.151047e-08
0.4499971.6958532.081629e-08
0.452221.6952672.011868e-08
0.4544541.6946881.941762e-08
0.4566991.6941181.871309e-08
0.4589551.6935551.800509e-08
0.461.6932971.767700e-08
0.4612221.6929991.747857e-08
0.46351.692451.710851e-08
0.465791.6919091.673662e-08
0.468091.6913751.636290e-08
0.4704031.6908471.598733e-08
0.4727261.6903271.560991e-08
0.4750621.6898131.523062e-08
0.4774081.6893051.484946e-08
0.4797671.6888041.446642e-08
0.4821361.688311.408148e-08
0.4845181.6878221.369464e-08
0.4869121.6873391.330590e-08
0.4893171.6868631.291523e-08
0.4917341.6863931.252263e-08
0.4941631.6859291.212809e-08
0.4966041.685471.173160e-08
0.4990571.6850171.133316e-08
0.51.6848451.118000e-08
0.5015221.684571.104054e-08
0.5041.6841281.081358e-08
0.5064891.6836911.058549e-08
0.5089911.683261.035628e-08
0.5115061.6828341.012594e-08
0.5140321.6824139.894461e-09
0.5165711.6819989.661838e-09
0.5191231.6815879.428065e-09
0.5216881.6811819.193137e-09
0.5242651.680788.957050e-09
0.5268541.6803848.719795e-09
0.5294571.6799928.481369e-09
0.5320721.6796058.241765e-09
0.5347011.6792238.000978e-09
0.5373421.6788457.759001e-09
0.5399961.6784717.515829e-09
0.5426641.6781027.271455e-09
0.5453441.6777377.025875e-09
0.5461.6776496.965800e-09
0.5480381.6773776.991804e-09
0.5507451.677027.026345e-09
0.5534661.6766687.061056e-09
0.55621.676327.095938e-09
0.5589471.6759757.130993e-09
0.5617081.6756357.166221e-09
0.5644831.6752987.201623e-09
0.5672721.6749657.237200e-09
0.5700741.6746367.272952e-09
0.572891.6743117.308881e-09
0.575721.6739897.344988e-09
0.5785641.6736717.381273e-09
0.581.6735127.399600e-09
0.5814221.6733577.488192e-09
0.5842941.6730457.667180e-09
0.587181.6727387.847052e-09
0.590081.6724348.027813e-09
0.5929951.6721338.209467e-09
0.5959251.6718358.392018e-09
0.5988681.6715418.575471e-09
0.6018271.671258.759831e-09
0.6047991.6709628.945100e-09
0.6077871.6706779.131285e-09
0.6107891.6703959.318390e-09
0.6138061.6701169.506419e-09
0.6168391.669849.695377e-09
0.6198861.6695679.885268e-09
0.621.6695579.892400e-09
0.6229481.6692989.939459e-09
0.6260251.669039.988587e-09
0.6291171.6687661.003796e-08
0.6322251.6685051.008757e-08
0.6353481.6682461.013743e-08
0.6384861.667991.018754e-08
0.641641.6677371.023789e-08
0.644811.6674861.028849e-08
0.6479951.6672381.033934e-08
0.6511961.6669921.039045e-08
0.6544131.6667491.044180e-08
0.6576461.6665091.049341e-08
0.661.6663361.053100e-08
0.6608941.6662711.049522e-08
0.6641591.6660351.036460e-08
0.667441.6658021.023332e-08
0.6707371.6655711.010140e-08
0.674051.6653429.968829e-09
0.677381.6651169.835602e-09
0.6807261.6648929.701716e-09
0.6840881.664679.567169e-09
0.6874671.6644519.431958e-09
0.6908631.6642339.296078e-09
0.6942761.6640189.159528e-09
0.6977061.6638059.022303e-09
0.71.6636648.930500e-09
0.7011521.6635948.945198e-09
0.7046161.6633858.989382e-09
0.7080961.6631789.033784e-09
0.7115941.6629739.078406e-09
0.7151091.662779.123248e-09
0.7186421.6625699.168311e-09
0.7221921.662379.213597e-09
0.7257591.6621739.259107e-09
0.7293441.6619789.304842e-09
0.7329471.6617849.350802e-09
0.7365681.6615939.396990e-09
0.7402061.6614039.443406e-09
0.7438621.6612159.490051e-09
0.7475371.6610289.536926e-09
0.751231.6608449.584033e-09
0.754941.6606619.631373e-09
0.758671.6604799.678946e-09
0.7624171.66039.726755e-09
0.7661841.6601229.774800e-09
0.7699681.6599469.823082e-09
0.7737721.6597719.871602e-09
0.7775941.6595989.920362e-09
0.7814351.6594269.969363e-09
0.7852951.6592561.001861e-08
0.7891741.6590871.006809e-08
0.7930731.658921.011782e-08
0.796991.6587541.016780e-08
0.8009271.658591.021802e-08
0.8048841.6584271.026850e-08
0.808861.6582661.031922e-08
0.8128551.6581051.037019e-08
0.816871.6579471.042141e-08
0.8209061.6577891.047289e-08
0.8249611.6576331.052462e-08
0.8290361.6574781.057660e-08
0.8331311.6573251.062885e-08
0.8372471.6571731.068135e-08
0.8413821.6570221.073411e-08
0.8455391.6568721.078713e-08
0.8497151.6567231.084041e-08
0.8539131.6565761.089396e-08
0.8581311.656431.094777e-08
0.862371.6562851.100184e-08
0.866631.6561411.105619e-08
0.8709111.6559981.111080e-08
0.8752131.6558561.116568e-08
0.8795361.6557161.122083e-08
0.8838811.6555761.127626e-08
0.8882471.6554381.133196e-08
0.8926351.65531.138793e-08
0.8970441.6551641.144418e-08
0.9014751.6550291.150071e-08
0.9059281.6548941.155752e-08
0.9104031.6547611.161460e-08
0.9149011.6546281.167197e-08
0.919421.6544971.172963e-08
0.9239621.6543661.178757e-08
0.9285261.6542361.184579e-08
0.9331131.6541081.190430e-08
0.9377221.653981.196310e-08
0.9423541.6538531.202220e-08
0.9470091.6537271.208158e-08
0.9516871.6536011.214126e-08
0.9563881.6534771.220123e-08
0.9611121.6533531.226150e-08
0.965861.653231.232206e-08
0.9706311.6531081.238293e-08
0.9754261.6529871.244409e-08
0.9802441.6528661.250556e-08
0.9850861.6527461.256733e-08
0.9899531.6526271.262941e-08
0.9948431.6525091.269179e-08
0.9997571.6523911.275448e-08
1.00471.6522741.281748e-08
1.009661.6521581.288080e-08
1.014651.6520421.294442e-08
1.019661.6519271.300836e-08
1.024691.6518131.307261e-08
1.029761.6516991.313719e-08
1.034841.6515861.320208e-08
1.039961.6514741.326729e-08
1.045091.6513621.333282e-08
1.050251.651251.339868e-08
1.055441.651141.346487e-08
1.061.6510431.352300e-08
1.060661.6510291.359313e-08
1.06591.650921.415279e-08
1.071161.6508111.471521e-08
1.076451.6507021.528041e-08
1.081771.6505941.584840e-08
1.087111.6504861.641920e-08
1.092481.6503791.699281e-08
1.097881.6502721.756926e-08
1.10331.6501661.814856e-08
1.108751.650061.873072e-08
1.114231.6499551.931575e-08
1.119731.649851.990368e-08
1.125271.6497462.049451e-08
1.130821.6496412.108825e-08
1.136411.6495382.168493e-08
1.142021.6494342.228456e-08
1.147671.6493312.288715e-08
1.153331.6492292.349272e-08
1.159031.6491272.410128e-08
1.164761.6490252.471284e-08
1.170511.6489232.532742e-08
1.176291.6488222.594505e-08
1.18211.6487212.656572e-08
1.187941.648622.718945e-08
1.193811.648522.781627e-08
1.199711.6484192.844619e-08
1.205631.648322.907921e-08
1.211591.648222.971537e-08
1.217571.648123.035466e-08
1.223591.6480213.099712e-08
1.229631.6479223.164275e-08
1.235711.6478243.229156e-08
1.241811.6477253.294359e-08
1.247951.6476273.359883e-08
1.254111.6475283.425731e-08
1.260311.647433.491904e-08
1.266531.6473323.558404e-08
1.272791.6472353.625233e-08
1.279071.6471373.692391e-08
1.285391.6470393.759882e-08
1.291741.6469423.827706e-08
1.298121.6468453.895865e-08
1.304541.6467473.964360e-08
1.310981.646654.033194e-08
1.317461.6465534.102368e-08
1.323961.6464564.171884e-08
1.33051.6463594.241743e-08
1.337081.6462624.311947e-08
1.343681.6461654.382498e-08
1.350321.6460694.453397e-08
1.356991.6459724.524647e-08
1.363691.6458754.596248e-08
1.370431.6457784.668204e-08
1.37721.6456814.740514e-08
1.3841.6455844.813182e-08
1.390841.6454874.886209e-08
1.397711.645394.959597e-08
1.404611.6452935.033347e-08
1.411551.6451965.107462e-08
1.418521.6450985.181942e-08
1.425531.6450015.256791e-08
1.432571.6449045.332009e-08
1.439651.6448065.407599e-08
1.446761.6447085.483562e-08
1.453911.644615.559900e-08
1.461091.6445125.636616e-08
1.468311.6444145.713710e-08
1.475561.6443165.791185e-08
1.482851.6442175.869043e-08
1.490171.6441195.947286e-08
1.497531.644026.025915e-08
1.504931.643926.104933e-08
1.512371.6438216.184341e-08
1.519841.6437226.264141e-08
1.527341.6436226.344335e-08
1.531.6435866.372700e-08
1.534891.6435227.036028e-08
1.542471.6434218.064685e-08
1.550091.6433219.098423e-08
1.557751.643221.013727e-07
1.565441.6431181.118124e-07
1.573181.6430171.223038e-07
1.580951.6429151.328469e-07
1.588761.6428131.434422e-07
1.59661.642711.540897e-07
1.604491.6426071.647899e-07
1.612421.6425041.755429e-07
1.620381.64241.863491e-07
1.628391.6422961.972086e-07
1.636431.6421922.081218e-07
1.644511.6420872.190889e-07
1.652641.6419822.301101e-07
1.66081.6418762.411858e-07
1.6691.641772.523162e-07
1.677251.6416632.635016e-07
1.685531.6415562.747422e-07
1.693861.6414492.860384e-07
1.702231.6413412.973904e-07
1.710641.6412323.087984e-07
1.719091.6411233.202628e-07
1.727581.6410133.317838e-07
1.736111.6409033.433618e-07
1.744691.6407923.549969e-07
1.753311.6406813.666895e-07
1.761971.6405693.784399e-07
1.770671.6404573.902483e-07
1.779421.6403444.021150e-07
1.788211.640234.140404e-07
1.797041.6401164.260246e-07
1.805921.6400014.380681e-07
1.814841.6398854.501711e-07
1.82381.6397694.623338e-07
1.832811.6396524.745566e-07
1.841871.6395344.868398e-07
1.850961.6394164.991837e-07
1.860111.6392975.115886e-07
1.86931.6391775.240547e-07
1.878531.6390565.365824e-07
1.887811.6389355.491720e-07
1.897141.6388135.618238e-07
1.906511.638695.745381e-07
1.915921.6385665.873151e-07
1.925391.6384426.001553e-07
1.93491.6383166.130590e-07
1.944461.638196.260263e-07
1.954061.6380636.390578e-07
1.963721.6379356.521536e-07
1.971.6378526.606800e-07
1.973421.6378066.757639e-07
1.983161.6376767.188131e-07
1.992961.6375467.620749e-07
2.00281.6374148.055504e-07
2.01271.6372818.492407e-07
2.022641.6371488.931468e-07
2.032631.6370139.372698e-07
2.042671.6368789.816107e-07
2.052761.6367411.026171e-06
2.06291.6366041.070951e-06
2.073091.6364651.115952e-06
2.083331.6363251.161176e-06
2.093631.6361841.206623e-06
2.103971.6360421.252294e-06
2.114361.6358991.298191e-06
2.12481.6357551.344315e-06
2.13531.635611.390667e-06
2.145851.6354631.437247e-06
2.156451.6353161.484058e-06
2.16711.6351671.531100e-06
2.177811.6350171.578374e-06
2.188561.6348651.625882e-06
2.199371.6347121.673625e-06
2.210241.6345591.721603e-06
2.221161.6344031.769818e-06
2.232131.6342471.818272e-06
2.243161.6340891.866965e-06
2.254241.633931.915898e-06
2.265371.6337691.965073e-06
2.276561.6336072.014491e-06
2.287811.6334432.064153e-06
2.299111.6332792.114061e-06
2.310471.6331122.164215e-06
2.321881.6329442.214617e-06
2.3251.6328982.228400e-06
2.333351.6327752.279836e-06
2.344871.6326042.350850e-06
2.356461.6324322.422215e-06
2.36811.6322582.493933e-06
2.37981.6320822.566005e-06
2.391551.6319052.638433e-06
2.403371.6317262.711219e-06
2.415241.6315452.784365e-06
2.427171.6313632.857871e-06
2.439161.6311792.931741e-06
2.451211.6309943.005976e-06
2.463311.6308063.080577e-06
2.475481.6306173.155547e-06
2.487711.6304263.230888e-06
2.51.6302333.306600e-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
—