Optical constants

Refractive index of SF1 (SCHOTT)

SF1: 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
1.71736
Extinction coefficient k
7.87323e-09
Permittivity ε1
2.94931
Permittivity ε2
2.70423e-08
Absorption coefficient α
0.00168376 cm⁻¹
Penetration depth δ = λ/(2πk)
1.18782e+10 nm
Abbe number Vd
29.513
Chromatic dispersion dn/dλ
-0.12242 µm⁻¹
Group index ng
1.78929
Group velocity dispersion
246.68 fs²/mm
Dispersion parameter D
-1345.77 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

# SF1 (SCHOTT): SF1
schott_sf1 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "SF1", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_sf1.range_nm)  # (350, 2500) nm
eps = schott_sf1.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=1.55912923λ2λ2−0.0121481001+0.284246288λ2λ2−0.0534549042+0.968842926λ2λ2−112.174809

Valid from 0.35 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.55912923
C30.0121481001
C40.284246288
C50.0534549042
C60.968842926
C7112.174809

Comments and conditions

lead containing glass type

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 4.84e-06 1.7e-08 -4.52e-11 1.38e-06 1.26e-09 0.259
nd
1.71736
Vd
29.51
glass code
717295.446
glass status
standard
density
value: 4460
thermal expansion
value: 8.1e-06, temperature range: 243 343; value: 8.8e-06, temperature range: 293 573
dPgF
0.0042
resistance
acid: 3.2; stain: 1.0; alkali: 2.3; climatic: 2.0; phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 5.06e-06 K⁻¹ at 633 nm, dn/dT = 3.11e-06 K⁻¹ at 1310 nm, dn/dT = 2.96e-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
SF1 (SCHOTT), SF1: n and k versus wavelength
λ (µm)nk
0.351.7983373.906600e-06
0.3517291.7967583.549143e-06
0.3534661.795213.189920e-06
0.3552121.7936912.828923e-06
0.3569671.7922022.466143e-06
0.358731.7907412.101570e-06
0.3605021.7893071.735197e-06
0.3622831.7878991.367014e-06
0.3640731.7865189.970117e-07
0.3651.7858158.053200e-07
0.3658711.7851617.565791e-07
0.3676791.783836.554742e-07
0.3694951.7825215.538698e-07
0.371.7821635.256100e-07
0.371321.7812374.938640e-07
0.3731541.7799744.497526e-07
0.3749981.7787344.054232e-07
0.376851.7775153.608749e-07
0.3787121.7763183.161065e-07
0.381.7755042.851200e-07
0.3805821.775142.785846e-07
0.3824621.7739822.574836e-07
0.3843521.7728442.362784e-07
0.386251.7717252.149685e-07
0.3881581.7706241.935533e-07
0.391.7695841.728800e-07
0.3900761.7695411.723761e-07
0.3920021.7684761.595199e-07
0.3939391.7674281.466003e-07
0.3958851.7663971.336168e-07
0.397841.7653821.205692e-07
0.3998061.7643841.074572e-07
0.41.7642861.061600e-07
0.4017811.7634011.016713e-07
0.4037651.7624339.666786e-08
0.4051.7618419.355500e-08
0.405761.7614819.151021e-08
0.4077641.7605438.611555e-08
0.4097781.7596198.069424e-08
0.4118031.758717.524616e-08
0.4138371.7578146.977116e-08
0.4158811.7569326.426911e-08
0.4179351.7560635.873989e-08
0.421.7552065.318336e-08
0.421.7552065.318300e-08
0.4220751.7543635.065864e-08
0.424161.7535324.812165e-08
0.4262551.7527134.557213e-08
0.428361.7519064.301001e-08
0.4304761.751114.043524e-08
0.4326031.7503273.784775e-08
0.434741.7495543.524747e-08
0.4361.7491053.371400e-08
0.4368871.7487923.334072e-08
0.4390451.7480413.243278e-08
0.4412141.7473013.152035e-08
0.4433941.7465713.060342e-08
0.4455841.7458512.968196e-08
0.4477851.7451412.875595e-08
0.4499971.7444412.782537e-08
0.452221.743752.689018e-08
0.4544541.7430692.595038e-08
0.4566991.7423982.500593e-08
0.4589551.7417352.405682e-08
0.461.7414322.361700e-08
0.4612221.7410812.323715e-08
0.46351.7404362.252876e-08
0.465791.73982.181687e-08
0.468091.7391722.110147e-08
0.4704031.7385532.038253e-08
0.4727261.7379411.966004e-08
0.4750621.7373381.893398e-08
0.4774081.7367431.820434e-08
0.4797671.7361551.747109e-08
0.4821361.7355751.673421e-08
0.4845181.7350031.599370e-08
0.4869121.7344371.524953e-08
0.4893171.733881.450169e-08
0.4917341.7333291.375015e-08
0.4941631.7327851.299490e-08
0.4966041.7322481.223592e-08
0.4990571.7317181.147318e-08
0.51.7315171.118000e-08
0.5015221.7311951.104054e-08
0.5041.7306781.081358e-08
0.5064891.7301671.058549e-08
0.5089911.7296631.035628e-08
0.5115061.7291651.012594e-08
0.5140321.7286749.894461e-09
0.5165711.7281889.661838e-09
0.5191231.7277089.428065e-09
0.5216881.7272359.193137e-09
0.5242651.7267678.957050e-09
0.5268541.7263048.719795e-09
0.5294571.7258478.481369e-09
0.5320721.7253968.241765e-09
0.5347011.724958.000978e-09
0.5373421.724517.759001e-09
0.5399961.7240747.515829e-09
0.5426641.7236447.271455e-09
0.5453441.7232197.025875e-09
0.5461.7231166.965800e-09
0.5480381.7227996.991804e-09
0.5507451.7223847.026345e-09
0.5534661.7219747.061056e-09
0.55621.7215697.095938e-09
0.5589471.7211687.130993e-09
0.5617081.7207727.166221e-09
0.5644831.7203817.201623e-09
0.5672721.7199947.237200e-09
0.5700741.7196117.272952e-09
0.572891.7192337.308881e-09
0.575721.718867.344988e-09
0.5785641.718497.381273e-09
0.581.7183067.399600e-09
0.5814221.7181257.488192e-09
0.5842941.7177647.667180e-09
0.587181.7174077.847052e-09
0.590081.7170548.027813e-09
0.5929951.7167058.209467e-09
0.5959251.7163598.392018e-09
0.5988681.7160188.575471e-09
0.6018271.715688.759831e-09
0.6047991.7153478.945100e-09
0.6077871.7150179.131285e-09
0.6107891.714699.318390e-09
0.6138061.7143679.506419e-09
0.6168391.7140489.695377e-09
0.6198861.7137329.885268e-09
0.621.713729.892400e-09
0.6229481.7134199.939459e-09
0.6260251.713119.988587e-09
0.6291171.7128051.003796e-08
0.6322251.7125021.008757e-08
0.6353481.7122031.013743e-08
0.6384861.7119071.018754e-08
0.641641.7116141.023789e-08
0.644811.7113251.028849e-08
0.6479951.7110381.033934e-08
0.6511961.7107541.039045e-08
0.6544131.7104741.044180e-08
0.6576461.7101961.049341e-08
0.661.7099971.053100e-08
0.6608941.7099211.049522e-08
0.6641591.7096491.036460e-08
0.667441.709381.023332e-08
0.6707371.7091141.010140e-08
0.674051.708859.968829e-09
0.677381.708599.835602e-09
0.6807261.7083319.701716e-09
0.6840881.7080769.567169e-09
0.6874671.7078239.431958e-09
0.6908631.7075739.296078e-09
0.6942761.7073259.159528e-09
0.6977061.707089.022303e-09
0.71.7069188.930500e-09
0.7011521.7068378.945198e-09
0.7046161.7065968.989382e-09
0.7080961.7063589.033784e-09
0.7115941.7061239.078406e-09
0.7151091.7058899.123248e-09
0.7186421.7056589.168311e-09
0.7221921.705439.213597e-09
0.7257591.7052039.259107e-09
0.7293441.7049799.304842e-09
0.7329471.7047579.350802e-09
0.7365681.7045379.396990e-09
0.7402061.7043199.443406e-09
0.7438621.7041039.490051e-09
0.7475371.7038899.536926e-09
0.751231.7036789.584033e-09
0.754941.7034689.631373e-09
0.758671.703269.678946e-09
0.7624171.7030559.726755e-09
0.7661841.7028519.774800e-09
0.7699681.7026499.823082e-09
0.7737721.7024499.871602e-09
0.7775941.7022519.920362e-09
0.7814351.7020549.969363e-09
0.7852951.701861.001861e-08
0.7891741.7016671.006809e-08
0.7930731.7014761.011782e-08
0.796991.7012871.016780e-08
0.8009271.7010991.021802e-08
0.8048841.7009131.026850e-08
0.808861.7007291.031922e-08
0.8128551.7005461.037019e-08
0.816871.7003651.042141e-08
0.8209061.7001861.047289e-08
0.8249611.7000081.052462e-08
0.8290361.6998321.057660e-08
0.8331311.6996571.062885e-08
0.8372471.6994841.068135e-08
0.8413821.6993121.073411e-08
0.8455391.6991411.078713e-08
0.8497151.6989731.084041e-08
0.8539131.6988051.089396e-08
0.8581311.6986391.094777e-08
0.862371.6984741.100184e-08
0.866631.6983111.105619e-08
0.8709111.6981491.111080e-08
0.8752131.6979881.116568e-08
0.8795361.6978291.122083e-08
0.8838811.697671.127626e-08
0.8882471.6975141.133196e-08
0.8926351.6973581.138793e-08
0.8970441.6972031.144418e-08
0.9014751.697051.150071e-08
0.9059281.6968981.155752e-08
0.9104031.6967471.161460e-08
0.9149011.6965981.167197e-08
0.919421.6964491.172963e-08
0.9239621.6963021.178757e-08
0.9285261.6961551.184579e-08
0.9331131.696011.190430e-08
0.9377221.6958661.196310e-08
0.9423541.6957231.202220e-08
0.9470091.695581.208158e-08
0.9516871.6954391.214126e-08
0.9563881.6952991.220123e-08
0.9611121.695161.226150e-08
0.965861.6950221.232206e-08
0.9706311.6948851.238293e-08
0.9754261.6947481.244409e-08
0.9802441.6946131.250556e-08
0.9850861.6944791.256733e-08
0.9899531.6943451.262941e-08
0.9948431.6942121.269179e-08
0.9997571.694081.275448e-08
1.00471.693951.281748e-08
1.009661.6938191.288080e-08
1.014651.693691.294442e-08
1.019661.6935611.300836e-08
1.024691.6934341.307261e-08
1.029761.6933071.313719e-08
1.034841.6931811.320208e-08
1.039961.6930551.326729e-08
1.045091.692931.333282e-08
1.050251.6928061.339868e-08
1.055441.6926831.346487e-08
1.061.6925761.352300e-08
1.060661.692561.360693e-08
1.06591.6924381.427672e-08
1.071161.6923171.494981e-08
1.076451.6921961.562623e-08
1.081771.6920761.630599e-08
1.087111.6919571.698910e-08
1.092481.6918381.767559e-08
1.097881.691721.836548e-08
1.10331.6916021.905877e-08
1.108751.6914851.975548e-08
1.114231.6913692.045564e-08
1.119731.6912532.115925e-08
1.125271.6911382.186634e-08
1.130821.6910232.257692e-08
1.136411.6909082.329102e-08
1.142021.6907942.400864e-08
1.147671.6906812.472980e-08
1.153331.6905682.545453e-08
1.159031.6904562.618284e-08
1.164761.6903442.691474e-08
1.170511.6902322.765027e-08
1.176291.6901212.838942e-08
1.18211.690012.913223e-08
1.187941.68992.987870e-08
1.193811.689793.062886e-08
1.199711.689683.138273e-08
1.205631.6895713.214032e-08
1.211591.6894623.290166e-08
1.217571.6893533.366675e-08
1.223591.6892453.443563e-08
1.229631.6891373.520830e-08
1.235711.6890293.598479e-08
1.241811.6889223.676511e-08
1.247951.6888153.754929e-08
1.254111.6887083.833735e-08
1.260311.6886023.912929e-08
1.266531.6884953.992515e-08
1.272791.6883894.072494e-08
1.279071.6882834.152868e-08
1.285391.6881784.233639e-08
1.291741.6880724.314809e-08
1.298121.6879674.396380e-08
1.304541.6878624.478354e-08
1.310981.6877574.560733e-08
1.317461.6876524.643519e-08
1.323961.6875484.726713e-08
1.33051.6874434.810319e-08
1.337081.6873394.894338e-08
1.343681.6872354.978771e-08
1.350321.687135.063622e-08
1.356991.6870265.148892e-08
1.363691.6869225.234583e-08
1.370431.6868195.320698e-08
1.37721.6867155.407238e-08
1.3841.6866115.494205e-08
1.390841.6865075.581602e-08
1.397711.6864035.669431e-08
1.404611.6862995.757693e-08
1.411551.6861965.846392e-08
1.418521.6860925.935528e-08
1.425531.6859886.025105e-08
1.432571.6858846.115125e-08
1.439651.685786.205589e-08
1.446761.6856766.296500e-08
1.453911.6855726.387860e-08
1.461091.6854686.479671e-08
1.468311.6853646.571936e-08
1.475561.685266.664657e-08
1.482851.6851556.757835e-08
1.490171.6850516.851474e-08
1.497531.6849466.945576e-08
1.504931.6848417.040142e-08
1.512371.6847367.135176e-08
1.519841.6846317.230679e-08
1.527341.6845267.326653e-08
1.531.6844897.360600e-08
1.534891.684428.012951e-08
1.542471.6843159.024584e-08
1.550091.6842091.004121e-07
1.557751.6841031.106287e-07
1.565441.6839961.208957e-07
1.573181.6838891.312134e-07
1.580951.6837831.415821e-07
1.588761.6836751.520020e-07
1.59661.6835681.624733e-07
1.604491.683461.729964e-07
1.612421.6833521.835715e-07
1.620381.6832441.941988e-07
1.628391.6831352.048786e-07
1.636431.6830262.156112e-07
1.644511.6829162.263968e-07
1.652641.6828072.372356e-07
1.66081.6826962.481280e-07
1.6691.6825862.590742e-07
1.677251.6824752.700745e-07
1.685531.6823632.811291e-07
1.693861.6822512.922384e-07
1.702231.6821393.034025e-07
1.710641.6820263.146217e-07
1.719091.6819133.258964e-07
1.727581.68183.372267e-07
1.736111.6816853.486131e-07
1.744691.6815713.600557e-07
1.753311.6814563.715548e-07
1.761971.681343.831107e-07
1.770671.6812243.947237e-07
1.779421.6811074.063940e-07
1.788211.6809894.181220e-07
1.797041.6808714.299080e-07
1.805921.6807534.417521e-07
1.814841.6806344.536548e-07
1.82381.6805144.656162e-07
1.832811.6803934.776368e-07
1.841871.6802724.897167e-07
1.850961.6801515.018563e-07
1.860111.6800285.140559e-07
1.86931.6799055.263157e-07
1.878531.6797815.386361e-07
1.887811.6796575.510173e-07
1.897141.6795315.634598e-07
1.906511.6794055.759636e-07
1.915921.6792795.885293e-07
1.925391.6791516.011570e-07
1.93491.6790236.138471e-07
1.944461.6788936.265998e-07
1.954061.6787636.394156e-07
1.963721.6786336.522947e-07
1.971.6785476.606800e-07
1.973421.6785016.767328e-07
1.983161.6783687.225472e-07
1.992961.6782357.685878e-07
2.00281.6781018.148559e-07
2.01271.6779658.613526e-07
2.022641.6778299.080789e-07
2.032631.6776929.550361e-07
2.042671.6775541.002225e-06
2.052761.6774151.049647e-06
2.06291.6772751.097304e-06
2.073091.6771341.145196e-06
2.083331.6769921.193324e-06
2.093631.6768481.241690e-06
2.103971.6767041.290296e-06
2.114361.6765591.339141e-06
2.12481.6764121.388227e-06
2.13531.6762651.437556e-06
2.145851.6761161.487129e-06
2.156451.6759661.536946e-06
2.16711.6758151.587010e-06
2.177811.6756631.637321e-06
2.188561.675511.687880e-06
2.199371.6753551.738689e-06
2.210241.6751991.789750e-06
2.221161.6750421.841062e-06
2.232131.6748841.892628e-06
2.243161.6747241.944449e-06
2.254241.6745631.996525e-06
2.265371.6744012.048859e-06
2.276561.6742372.101451e-06
2.287811.6740722.154303e-06
2.299111.6739052.207417e-06
2.310471.6737372.260792e-06
2.321881.6735682.314431e-06
2.3251.6735222.329100e-06
2.333351.6733972.381528e-06
2.344871.6732252.453912e-06
2.356461.6730512.526654e-06
2.36811.6728752.599756e-06
2.37981.6726982.673218e-06
2.391551.672522.747043e-06
2.403371.672342.821233e-06
2.415241.6721582.895790e-06
2.427171.6719742.970715e-06
2.439161.6717893.046010e-06
2.451211.6716023.121676e-06
2.463311.6714143.197717e-06
2.475481.6712243.274133e-06
2.487711.6710313.350927e-06
2.51.6708383.428100e-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
—