Optical constants

Refractive index of N-SF6 (SCHOTT)

N-SF6: n,k 0.37–2.5 µm

Data
formula 2 + tabulated k
Range
0.37–2.5 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.37–2.5 µm
Refractive index n
1.80517
Extinction coefficient k
3.85528e-08
Permittivity ε1
3.25865
Permittivity ε2
1.39189e-07
Absorption coefficient α
0.00824487 cm⁻¹
Penetration depth δ = λ/(2πk)
2.42575e+09 nm
Abbe number Vd
25.36
Chromatic dispersion dn/dλ
-0.158783 µm⁻¹
Group index ng
1.89847
Group velocity dispersion
328.598 fs²/mm
Dispersion parameter D
-1792.68 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-SF6 (SCHOTT): N-SF6
schott_n_sf6 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "N-SF6", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_n_sf6.range_nm)  # (370, 2500) nm
eps = schott_n_sf6.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=1.77931763λ2λ2−0.0133714182+0.338149866λ2λ2−0.0617533621+2.08734474λ2λ2−174.01759

Valid from 0.37 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.77931763
C30.0133714182
C40.338149866
C50.0617533621
C62.08734474
C7174.01759

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -4.93e-06 7.02e-09 -2.4e-11 9.84e-07 1.54e-09 0.29
nd
1.80518
Vd
25.36
glass code
805254.337
glass status
standard
density
value: 3369
thermal expansion
value: 9.03e-06, temperature range: 243 343; value: 1.034e-05, temperature range: 293 573
dPgF
0.0146
resistance
acid: 2.0; stain: 0.0; alkali: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -1.13e-06 K⁻¹ at 633 nm, dn/dT = -2.60e-06 K⁻¹ at 1310 nm, dn/dT = -2.69e-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 417 wavelengths, the same grid as the API and the library
N-SF6 (SCHOTT), N-SF6: n and k versus wavelength
λ (µm)nk
0.371.8937555.423700e-06
0.3717761.891954.854142e-06
0.373561.890184.281849e-06
0.3753531.8884453.706810e-06
0.3771551.8867433.129011e-06
0.3789651.8850742.548438e-06
0.381.8841382.216600e-06
0.3807841.8834372.129563e-06
0.3826121.8818311.926725e-06
0.3844481.8802551.722914e-06
0.3862941.8787081.518125e-06
0.3881481.8771891.312353e-06
0.391.8757061.106800e-06
0.3900111.8756971.106281e-06
0.3918831.8742331.016905e-06
0.3937641.8727949.271004e-07
0.3956541.8713818.368647e-07
0.3975531.8699937.461958e-07
0.3994611.8686286.550917e-07
0.41.8682486.293600e-07
0.4013781.8672885.929210e-07
0.4033051.865975.419910e-07
0.4051.8648344.971800e-07
0.4052411.8646744.937222e-07
0.4071861.86344.657818e-07
0.409141.8621474.377073e-07
0.4111041.8609154.094980e-07
0.4130771.8597043.811534e-07
0.415061.8585123.526727e-07
0.4170521.8573393.240552e-07
0.4190541.8561852.953005e-07
0.421.8556482.817100e-07
0.4210651.8550492.758217e-07
0.4230861.8539322.646504e-07
0.4251171.8528322.534255e-07
0.4271581.8517492.421468e-07
0.4292081.8506822.308139e-07
0.4312681.8496332.194266e-07
0.4333381.8485992.079846e-07
0.4354181.8475811.964878e-07
0.4361.84731.932700e-07
0.4375081.8465781.903103e-07
0.4396081.8455911.861883e-07
0.4417181.8446181.820465e-07
0.4438381.843661.778848e-07
0.4459681.8427151.737031e-07
0.4481091.8417851.695014e-07
0.450261.8408681.652795e-07
0.4524211.8399641.610373e-07
0.4545921.8390741.567747e-07
0.4567741.8381961.524917e-07
0.4589671.837331.481882e-07
0.461.8369281.461600e-07
0.461171.8364771.446173e-07
0.4633831.8356361.416980e-07
0.4656071.8348061.387647e-07
0.4678421.8339881.358173e-07
0.4700881.8331821.328557e-07
0.4723441.8323861.298800e-07
0.4746111.8316021.268899e-07
0.4768891.8308281.238855e-07
0.4791781.8300651.208667e-07
0.4814781.8293121.178334e-07
0.4837891.8285691.147855e-07
0.4861111.8278361.117230e-07
0.4884451.8271131.086458e-07
0.4907891.8263991.055539e-07
0.4931451.8256951.024471e-07
0.4955121.8259.932535e-08
0.497891.8243149.618865e-08
0.51.8237169.340600e-08
0.500281.8236379.313800e-08
0.5026811.8229699.083859e-08
0.5050941.8223098.852815e-08
0.5075181.8216588.620662e-08
0.5099541.8210158.387395e-08
0.5124021.820388.153008e-08
0.5148611.8197547.917496e-08
0.5173331.8191357.680853e-08
0.5198161.8185247.443075e-08
0.5223111.8179217.204155e-08
0.5248181.8173256.964089e-08
0.5273371.8167376.722870e-08
0.5298681.8161566.480494e-08
0.5324111.8155826.236954e-08
0.5349671.8150155.992245e-08
0.5375341.8144555.746362e-08
0.5401141.8139025.499299e-08
0.5427071.8133555.251049e-08
0.5453121.8128155.001608e-08
0.5461.8126744.935700e-08
0.5479291.8122824.867279e-08
0.5505591.8117554.774000e-08
0.5532021.8112344.680274e-08
0.5558571.810724.586098e-08
0.5585251.8102114.491470e-08
0.5612061.8097094.396388e-08
0.5638991.8092124.300850e-08
0.5666061.8087224.204853e-08
0.5693261.8082374.108395e-08
0.5720581.8077574.011474e-08
0.5748041.8072843.914088e-08
0.5775631.8068153.816234e-08
0.581.8064083.729800e-08
0.5803351.8063523.735334e-08
0.5831211.8058953.781323e-08
0.585921.8054423.827532e-08
0.5887321.8049953.873963e-08
0.5915581.8045533.920617e-08
0.5943971.8041163.967495e-08
0.597251.8036834.014598e-08
0.6001171.8032564.061927e-08
0.6029971.8028334.109483e-08
0.6058911.8024154.157268e-08
0.60881.8020024.205281e-08
0.6117221.8015934.253526e-08
0.6146581.8011894.302001e-08
0.6176081.8007894.350710e-08
0.621.800474.390200e-08
0.6205731.8003944.400409e-08
0.6235511.8000034.453526e-08
0.6265441.7996164.506897e-08
0.6295511.7992334.560525e-08
0.6325731.7988554.614410e-08
0.6356091.798484.668553e-08
0.638661.798114.722957e-08
0.6417261.7977434.777621e-08
0.6448061.7973814.832548e-08
0.6479011.7970224.887739e-08
0.651011.7966674.943194e-08
0.6541351.7963164.998916e-08
0.6572751.7959685.054905e-08
0.661.7956715.103500e-08
0.660431.7956255.089716e-08
0.66361.7952844.988041e-08
0.6667851.7949484.885877e-08
0.6699851.7946144.783223e-08
0.6732011.7942844.680076e-08
0.6764321.7939584.576434e-08
0.6796791.7936354.472294e-08
0.6829411.7933154.367655e-08
0.6862191.7929984.262514e-08
0.6895131.7926854.156867e-08
0.6928231.7923754.050714e-08
0.6961481.7920683.944051e-08
0.6994891.7917643.836877e-08
0.71.7917183.820500e-08
0.7028471.7914633.800982e-08
0.706221.7911653.777852e-08
0.709611.790873.754612e-08
0.7130161.7905773.731260e-08
0.7164381.7902883.707796e-08
0.7198771.7900023.684220e-08
0.7233321.7897183.660530e-08
0.7268041.7894373.636727e-08
0.7302931.7891593.612809e-08
0.7337981.7888833.588776e-08
0.737321.788613.564628e-08
0.7408591.788343.540365e-08
0.7444151.7880723.515984e-08
0.7479881.7878073.491487e-08
0.7515781.7875453.466872e-08
0.7551861.7872843.442139e-08
0.7588111.7870273.417288e-08
0.7624531.7867713.392317e-08
0.7661121.7865183.367226e-08
0.769791.7862673.342015e-08
0.7734841.7860193.316682e-08
0.7771971.7857733.291229e-08
0.7809271.7855293.265653e-08
0.7846761.7852873.239954e-08
0.7884421.7850483.214132e-08
0.7922261.784813.188186e-08
0.7960291.7845753.162115e-08
0.799851.7843423.135919e-08
0.8036891.7841113.109598e-08
0.8075461.7838823.083150e-08
0.8114221.7836543.056575e-08
0.8153171.7834293.029873e-08
0.8192311.7832063.003042e-08
0.8231631.7829852.976083e-08
0.8271141.7827652.948994e-08
0.8310841.7825482.921776e-08
0.8350731.7823322.894426e-08
0.8390811.7821182.866946e-08
0.8431081.7819062.839333e-08
0.8471551.7816962.811588e-08
0.8512211.7814872.783710e-08
0.8553071.781282.755698e-08
0.8594121.7810752.727552e-08
0.8635371.7808722.699270e-08
0.8676821.780672.670853e-08
0.8718471.780472.642299e-08
0.8760321.7802712.613608e-08
0.8802361.7800742.584780e-08
0.8844611.7798782.555813e-08
0.8887071.7796842.526707e-08
0.8929721.7794922.497461e-08
0.8972581.7793012.468075e-08
0.9015651.7791112.438548e-08
0.9058921.7789232.408880e-08
0.910241.7787362.379069e-08
0.9146091.7785512.349114e-08
0.9189991.7783662.319016e-08
0.923411.7781842.288774e-08
0.9278431.7780022.258386e-08
0.9322961.7778222.227853e-08
0.9367711.7776442.197173e-08
0.9412671.7774662.166345e-08
0.9457851.777292.135370e-08
0.9503251.7771152.104246e-08
0.9548861.7769412.072973e-08
0.9594691.7767682.041549e-08
0.9640751.7765972.009975e-08
0.9687021.7764271.978249e-08
0.9733521.7762581.946371e-08
0.9780231.7760891.914340e-08
0.9827181.7759231.882155e-08
0.9874351.7757571.849816e-08
0.9921741.7755921.817322e-08
0.9969361.7754281.784671e-08
1.001721.7752651.751864e-08
1.006531.7751031.718899e-08
1.011361.7749431.685776e-08
1.016221.7747831.652494e-08
1.021091.7746241.619053e-08
1.025991.7744661.585451e-08
1.030921.7743091.551687e-08
1.035871.7741531.517762e-08
1.040841.7739981.483673e-08
1.045831.7738431.449421e-08
1.050851.773691.415005e-08
1.05591.7735371.380423e-08
1.061.7734141.352300e-08
1.060971.7733851.371791e-08
1.066061.7732341.474525e-08
1.071181.7730841.577752e-08
1.076321.7729341.681475e-08
1.081481.7727861.785695e-08
1.086671.7726381.890416e-08
1.091891.772491.995639e-08
1.097131.7723442.101367e-08
1.10241.7721982.207603e-08
1.107691.7720532.314349e-08
1.1131.7719082.421607e-08
1.118351.7717642.529380e-08
1.123711.7716212.637670e-08
1.129111.7714782.746480e-08
1.134531.7713362.855812e-08
1.139971.7711952.965669e-08
1.145451.7710543.076053e-08
1.150941.7709143.186967e-08
1.156471.7707743.298414e-08
1.162021.7706343.410395e-08
1.16761.7704963.522914e-08
1.17321.7703573.635973e-08
1.178831.770223.749574e-08
1.184491.7700823.863721e-08
1.190171.7699453.978416e-08
1.195891.7698094.093661e-08
1.201631.7696734.209460e-08
1.207391.7695374.325814e-08
1.213191.7694024.442727e-08
1.219011.7692674.560200e-08
1.224861.7691334.678238e-08
1.230741.7689994.796842e-08
1.236651.7688654.916016e-08
1.242591.7687325.035761e-08
1.248551.7685995.156082e-08
1.254541.7684665.276980e-08
1.260561.7683345.398458e-08
1.266621.7682015.520519e-08
1.272691.768075.643166e-08
1.27881.7679385.766402e-08
1.284941.7678065.890229e-08
1.291111.7676756.014651e-08
1.297311.7675446.139669e-08
1.303531.7674136.265288e-08
1.309791.7672836.391510e-08
1.316081.7671526.518338e-08
1.322391.7670226.645774e-08
1.328741.7668926.773822e-08
1.335121.7667626.902485e-08
1.341531.7666327.031765e-08
1.347971.7665027.161666e-08
1.354441.7663737.292190e-08
1.360941.7662437.423341e-08
1.367471.7661137.555121e-08
1.374031.7659847.687534e-08
1.380631.7658547.820582e-08
1.387251.7657257.954269e-08
1.393911.7655968.088598e-08
1.40061.7654668.223571e-08
1.407331.7653378.359192e-08
1.414081.7652078.495464e-08
1.420871.7650788.632391e-08
1.427691.7649488.769974e-08
1.434541.7648198.908218e-08
1.441431.7646899.047125e-08
1.448341.7645599.186699e-08
1.45531.764439.326943e-08
1.462281.76439.467861e-08
1.46931.7641699.609454e-08
1.476351.7640399.751727e-08
1.483441.7639099.894683e-08
1.490561.7637781.003833e-07
1.497711.7636471.018266e-07
1.50491.7635171.032768e-07
1.512131.7633851.047340e-07
1.519381.7632541.061982e-07
1.526681.7631221.076694e-07
1.531.7630631.083400e-07
1.5341.7629911.159604e-07
1.541371.7628581.299739e-07
1.548771.7627261.440547e-07
1.55621.7625931.582030e-07
1.563671.762461.724193e-07
1.571171.7623271.867037e-07
1.578711.7621942.010568e-07
1.586291.762062.154787e-07
1.593911.7619252.299699e-07
1.601561.7617912.445306e-07
1.609241.7616562.591612e-07
1.616971.761522.738620e-07
1.624731.7613842.886334e-07
1.632531.7612483.034757e-07
1.640361.7611113.183893e-07
1.648241.7609743.333744e-07
1.656151.7608373.484314e-07
1.66411.7606993.635607e-07
1.672081.760563.787626e-07
1.680111.7604213.940375e-07
1.688171.7602814.093857e-07
1.696281.7601414.248076e-07
1.704421.7600014.403035e-07
1.71261.7598594.558738e-07
1.720821.7597174.715188e-07
1.729081.7595754.872389e-07
1.737381.7594325.030345e-07
1.745721.7592885.189059e-07
1.75411.7591445.348534e-07
1.762521.7589995.508775e-07
1.770981.7588545.669785e-07
1.779481.7587075.831568e-07
1.788021.7585615.994128e-07
1.79661.7584136.157467e-07
1.805221.7582656.321591e-07
1.813891.7581156.486503e-07
1.822591.7579666.652206e-07
1.831341.7578156.818704e-07
1.840131.7576646.986002e-07
1.848971.7575117.154102e-07
1.857841.7573587.323010e-07
1.866761.7572047.492728e-07
1.875721.757057.663260e-07
1.884721.7568947.834612e-07
1.893771.7567388.006785e-07
1.902861.756588.179785e-07
1.911991.7564228.353616e-07
1.921171.7562638.528281e-07
1.930391.7561038.703784e-07
1.939651.7559428.880130e-07
1.948961.755789.057322e-07
1.958321.7556179.235364e-07
1.967721.7554539.414261e-07
1.971.7554139.457700e-07
1.977161.7552871.005472e-06
1.986651.7551211.084577e-06
1.996191.7549541.164061e-06
2.005771.7547861.243927e-06
2.01541.7546161.324176e-06
2.025071.7544461.404811e-06
2.034791.7542741.485832e-06
2.044561.7541011.567242e-06
2.054371.7539271.649043e-06
2.064231.7537521.731237e-06
2.074141.7535761.813825e-06
2.084091.7533981.896810e-06
2.09411.7532191.980193e-06
2.104151.7530392.063976e-06
2.114251.7528582.148161e-06
2.12441.7526752.232751e-06
2.134591.7524912.317746e-06
2.144841.7523062.403149e-06
2.155131.7521192.488963e-06
2.165481.7519312.575188e-06
2.175871.7517422.661827e-06
2.186321.7515512.748882e-06
2.196811.7513582.836354e-06
2.207351.7511642.924247e-06
2.217951.7509693.012561e-06
2.228591.7507723.101300e-06
2.239291.7505743.190464e-06
2.250041.7503743.280056e-06
2.260841.7501723.370078e-06
2.271691.7499693.460533e-06
2.282591.7497643.551421e-06
2.293551.7495583.642746e-06
2.304561.749353.734509e-06
2.315621.749143.826712e-06
2.3251.7489623.904900e-06
2.326731.7489293.916272e-06
2.33791.7487163.989488e-06
2.349121.7485014.063056e-06
2.36041.7482844.136978e-06
2.371731.7480664.211254e-06
2.383111.7478454.285886e-06
2.394551.7476234.360877e-06
2.406041.7473994.436228e-06
2.417591.7471734.511940e-06
2.42921.7469454.588016e-06
2.440861.7467154.664457e-06
2.452571.7464834.741264e-06
2.464341.746254.818441e-06
2.476171.7460144.895988e-06
2.488061.7457764.973907e-06
2.51.7455365.052200e-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
—