Optical constants

Refractive index of N-SF6HTultra (SCHOTT)

N-SF6HTultra: 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
3.16955e-08
Permittivity ε1
3.25865
Permittivity ε2
1.14432e-07
Absorption coefficient α
0.00677837 cm⁻¹
Penetration depth δ = λ/(2πk)
2.95056e+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-SF6HTultra (SCHOTT): N-SF6HTultra
mat = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "N-SF6HTultra", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mat.range_nm)  # (370, 2500) nm
eps = mat.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-SF6HTultra (SCHOTT), N-SF6HTultra: n and k versus wavelength
λ (µm)nk
0.371.8937554.495100e-06
0.3717761.891953.967968e-06
0.373561.890183.438307e-06
0.3753531.8884452.906103e-06
0.3771551.8867432.371344e-06
0.3789651.8850741.834019e-06
0.381.8841381.526900e-06
0.3807841.8834371.460017e-06
0.3826121.8818311.304150e-06
0.3844481.8802551.147534e-06
0.3862941.8787089.901670e-07
0.3881481.8771898.320444e-07
0.391.8757066.740900e-07
0.3900111.8756976.737702e-07
0.3918831.8742336.187059e-07
0.3937641.8727945.633774e-07
0.3956541.8713815.077833e-07
0.3975531.8699934.519223e-07
0.3994611.8686283.957933e-07
0.41.8682483.799400e-07
0.4013781.8672883.589720e-07
0.4033051.865973.296655e-07
0.4051.8648343.038800e-07
0.4052411.8646743.020159e-07
0.4071861.86342.869532e-07
0.409141.8621472.718182e-07
0.4111041.8609152.566106e-07
0.4130771.8597042.413300e-07
0.415061.8585122.259760e-07
0.4170521.8573392.105483e-07
0.4190541.8561851.950466e-07
0.421.8556481.877200e-07
0.4210651.8550491.843431e-07
0.4230861.8539321.779364e-07
0.4251171.8528321.714990e-07
0.4271581.8517491.650306e-07
0.4292081.8506821.585313e-07
0.4312681.8496331.520007e-07
0.4333381.8485991.454388e-07
0.4354181.8475811.388454e-07
0.4361.84731.370000e-07
0.4375081.8465781.348709e-07
0.4396081.8455911.319056e-07
0.4417181.8446181.289260e-07
0.4438381.843661.259322e-07
0.4459681.8427151.229240e-07
0.4481091.8417851.199013e-07
0.450261.8408681.168642e-07
0.4524211.8399641.138124e-07
0.4545921.8390741.107460e-07
0.4567741.8381961.076649e-07
0.4589671.837331.045690e-07
0.461.8369281.031100e-07
0.461171.8364771.019947e-07
0.4633831.8356369.988408e-08
0.4656071.8348069.776335e-08
0.4678421.8339889.563245e-08
0.4700881.8331829.349131e-08
0.4723441.8323869.133990e-08
0.4746111.8316028.917816e-08
0.4768891.8308288.700604e-08
0.4791781.8300658.482350e-08
0.4814781.8293128.263049e-08
0.4837891.8285698.042694e-08
0.4861111.8278367.821282e-08
0.4884451.8271137.598808e-08
0.4907891.8263997.375265e-08
0.4931451.8256957.150650e-08
0.4955121.8256.924956e-08
0.497891.8243146.698179e-08
0.51.8237166.497000e-08
0.500281.8236376.477755e-08
0.5026811.8229696.312638e-08
0.5050941.8223096.146728e-08
0.5075181.8216585.980022e-08
0.5099541.8210155.812516e-08
0.5124021.820385.644206e-08
0.5148611.8197545.475088e-08
0.5173331.8191355.305158e-08
0.5198161.8185245.134412e-08
0.5223111.8179214.962847e-08
0.5248181.8173254.790459e-08
0.5273371.8167374.617243e-08
0.5298681.8161564.443196e-08
0.5324111.8155824.268313e-08
0.5349671.8150154.092591e-08
0.5375341.8144553.916026e-08
0.5401141.8139023.738613e-08
0.5427071.8133553.560348e-08
0.5453121.8128153.381228e-08
0.5461.8126743.333900e-08
0.5479291.8122823.313695e-08
0.5505591.8117553.286150e-08
0.5532021.8112343.258473e-08
0.5558571.810723.230663e-08
0.5585251.8102113.202720e-08
0.5612061.8097093.174642e-08
0.5638991.8092123.146430e-08
0.5666061.8087223.118082e-08
0.5693261.8082373.089598e-08
0.5720581.8077573.060978e-08
0.5748041.8072843.032220e-08
0.5775631.8068153.003324e-08
0.581.8064082.977800e-08
0.5803351.8063522.986257e-08
0.5831211.8058953.056535e-08
0.585921.8054423.127151e-08
0.5887321.8049953.198105e-08
0.5915581.8045533.269400e-08
0.5943971.8041163.341037e-08
0.597251.8036833.413018e-08
0.6001171.8032563.485345e-08
0.6029971.8028333.558018e-08
0.6058911.8024153.631041e-08
0.60881.8020023.704414e-08
0.6117221.8015933.778139e-08
0.6146581.8011893.852218e-08
0.6176081.8007893.926653e-08
0.621.800473.987000e-08
0.6205731.8003943.996826e-08
0.6235511.8000034.047947e-08
0.6265441.7996164.099313e-08
0.6295511.7992334.150925e-08
0.6325731.7988554.202786e-08
0.6356091.798484.254895e-08
0.638661.798114.307254e-08
0.6417261.7977434.359865e-08
0.6448061.7973814.412729e-08
0.6479011.7970224.465846e-08
0.651011.7966674.519217e-08
0.6541351.7963164.572846e-08
0.6572751.7959684.626731e-08
0.661.7956714.673500e-08
0.660431.7956254.661902e-08
0.66361.7952844.576345e-08
0.6667851.7949484.490378e-08
0.6699851.7946144.403998e-08
0.6732011.7942844.317203e-08
0.6764321.7939584.229992e-08
0.6796791.7936354.142362e-08
0.6829411.7933154.054312e-08
0.6862191.7929983.965839e-08
0.6895131.7926853.876942e-08
0.6928231.7923753.787617e-08
0.6961481.7920683.697864e-08
0.6994891.7917643.607680e-08
0.71.7917183.593900e-08
0.7028471.7914633.568149e-08
0.706221.7911653.537635e-08
0.709611.790873.506973e-08
0.7130161.7905773.476165e-08
0.7164381.7902883.445209e-08
0.7198771.7900023.414104e-08
0.7233321.7897183.382850e-08
0.7268041.7894373.351446e-08
0.7302931.7891593.319891e-08
0.7337981.7888833.288185e-08
0.737321.788613.256326e-08
0.7408591.788343.224315e-08
0.7444151.7880723.192150e-08
0.7479881.7878073.159830e-08
0.7515781.7875453.127356e-08
0.7551861.7872843.094725e-08
0.7588111.7870273.061938e-08
0.7624531.7867713.028994e-08
0.7661121.7865182.995891e-08
0.769791.7862672.962630e-08
0.7734841.7860192.929209e-08
0.7771971.7857732.895627e-08
0.7809271.7855292.861884e-08
0.7846761.7852872.827980e-08
0.7884421.7850482.793912e-08
0.7922261.784812.759681e-08
0.7960291.7845752.725286e-08
0.799851.7843422.690726e-08
0.8036891.7841112.656000e-08
0.8075461.7838822.621107e-08
0.8114221.7836542.586047e-08
0.8153171.7834292.550818e-08
0.8192311.7832062.515420e-08
0.8231631.7829852.479853e-08
0.8271141.7827652.444114e-08
0.8310841.7825482.408204e-08
0.8350731.7823322.372122e-08
0.8390811.7821182.335867e-08
0.8431081.7819062.299437e-08
0.8471551.7816962.262833e-08
0.8512211.7814872.226053e-08
0.8553071.781282.189096e-08
0.8594121.7810752.151963e-08
0.8635371.7808722.114650e-08
0.8676821.780672.077159e-08
0.8718471.780472.039488e-08
0.8760321.7802712.001636e-08
0.8802361.7800741.963602e-08
0.8844611.7798781.925386e-08
0.8887071.7796841.886986e-08
0.8929721.7794921.848402e-08
0.8972581.7793011.809633e-08
0.9015651.7791111.770678e-08
0.9058921.7789231.731536e-08
0.910241.7787361.692206e-08
0.9146091.7785511.652687e-08
0.9189991.7783661.612978e-08
0.923411.7781841.573079e-08
0.9278431.7780021.532988e-08
0.9322961.7778221.492705e-08
0.9367711.7776441.452229e-08
0.9412671.7774661.411558e-08
0.9457851.777291.370692e-08
0.9503251.7771151.329630e-08
0.9548861.7769411.288371e-08
0.9594691.7767681.246913e-08
0.9640751.7765971.205257e-08
0.9687021.7764271.163401e-08
0.9733521.7762581.121344e-08
0.9780231.7760891.079085e-08
0.9827181.7759231.036623e-08
0.9874351.7757579.939578e-09
0.9921741.7755929.510875e-09
0.9969361.7754289.080113e-09
1.001721.7752658.647285e-09
1.006531.7751038.212378e-09
1.011361.7749437.775385e-09
1.016221.7747837.336293e-09
1.021091.7746246.895095e-09
1.025991.7744666.451778e-09
1.030921.7743096.006334e-09
1.035871.7741535.558751e-09
1.040841.7739985.109021e-09
1.045831.7738434.657131e-09
1.050851.773694.203073e-09
1.05591.7735373.746836e-09
1.061.7734143.375800e-09
1.060971.7733853.560905e-09
1.066061.7732344.536564e-09
1.071181.7730845.516906e-09
1.076321.7729346.501953e-09
1.081481.7727867.491729e-09
1.086671.7726388.486255e-09
1.091891.772499.485554e-09
1.097131.7723441.048965e-08
1.10241.7721981.149857e-08
1.107691.7720531.251232e-08
1.1131.7719081.353095e-08
1.118351.7717641.455446e-08
1.123711.7716211.558289e-08
1.129111.7714781.661625e-08
1.134531.7713361.765457e-08
1.139971.7711951.869788e-08
1.145451.7710541.974619e-08
1.150941.7709142.079954e-08
1.156471.7707742.185794e-08
1.162021.7706342.292142e-08
1.16761.7704962.399000e-08
1.17321.7703572.506372e-08
1.178831.770222.614259e-08
1.184491.7700822.722663e-08
1.190171.7699452.831588e-08
1.195891.7698092.941036e-08
1.201631.7696733.051009e-08
1.207391.7695373.161510e-08
1.213191.7694023.272542e-08
1.219011.7692673.384106e-08
1.224861.7691333.496206e-08
1.230741.7689993.608844e-08
1.236651.7688653.722022e-08
1.242591.7687323.835744e-08
1.248551.7685993.950011e-08
1.254541.7684664.064827e-08
1.260561.7683344.180194e-08
1.266621.7682014.296115e-08
1.272691.768074.412593e-08
1.27881.7679384.529629e-08
1.284941.7678064.647227e-08
1.291111.7676754.765390e-08
1.297311.7675444.884119e-08
1.303531.7674135.003419e-08
1.309791.7672835.123291e-08
1.316081.7671525.243738e-08
1.322391.7670225.364764e-08
1.328741.7668925.486371e-08
1.335121.7667625.608561e-08
1.341531.7666325.731338e-08
1.347971.7665025.854704e-08
1.354441.7663735.978662e-08
1.360941.7662436.103215e-08
1.367471.7661136.228366e-08
1.374031.7659846.354118e-08
1.380631.7658546.480473e-08
1.387251.7657256.607435e-08
1.393911.7655966.735006e-08
1.40061.7654666.863190e-08
1.407331.7653376.991988e-08
1.414081.7652077.121405e-08
1.420871.7650787.251443e-08
1.427691.7649487.382106e-08
1.434541.7648197.513395e-08
1.441431.7646897.645315e-08
1.448341.7645597.777867e-08
1.45531.764437.911056e-08
1.462281.76438.044885e-08
1.46931.7641698.179355e-08
1.476351.7640398.314471e-08
1.483441.7639098.450236e-08
1.490561.7637788.586652e-08
1.497711.7636478.723723e-08
1.50491.7635178.861452e-08
1.512131.7633858.999842e-08
1.519381.7632549.138897e-08
1.526681.7631229.278618e-08
1.531.7630639.342300e-08
1.5341.7629911.001272e-07
1.541371.7628581.124559e-07
1.548771.7627261.248437e-07
1.55621.7625931.372910e-07
1.563671.762461.497981e-07
1.571171.7623271.623652e-07
1.578711.7621941.749926e-07
1.586291.762061.876806e-07
1.593911.7619252.004295e-07
1.601561.7617912.132396e-07
1.609241.7616562.261112e-07
1.616971.761522.390446e-07
1.624731.7613842.520400e-07
1.632531.7612482.650978e-07
1.640361.7611112.782183e-07
1.648241.7609742.914018e-07
1.656151.7608373.046486e-07
1.66411.7606993.179589e-07
1.672081.760563.313331e-07
1.680111.7604213.447715e-07
1.688171.7602813.582745e-07
1.696281.7601413.718422e-07
1.704421.7600013.854750e-07
1.71261.7598593.991733e-07
1.720821.7597174.129374e-07
1.729081.7595754.267675e-07
1.737381.7594324.406639e-07
1.745721.7592884.546271e-07
1.75411.7591444.686573e-07
1.762521.7589994.827549e-07
1.770981.7588544.969201e-07
1.779481.7587075.111533e-07
1.788021.7585615.254548e-07
1.79661.7584135.398250e-07
1.805221.7582655.542641e-07
1.813891.7581155.687725e-07
1.822591.7579665.833506e-07
1.831341.7578155.979987e-07
1.840131.7576646.127170e-07
1.848971.7575116.275060e-07
1.857841.7573586.423660e-07
1.866761.7572046.572973e-07
1.875721.757056.723003e-07
1.884721.7568946.873753e-07
1.893771.7567387.025227e-07
1.902861.756587.177427e-07
1.911991.7564227.330358e-07
1.921171.7562637.484024e-07
1.930391.7561037.638426e-07
1.939651.7559427.793570e-07
1.948961.755787.949458e-07
1.958321.7556178.106095e-07
1.967721.7554538.263484e-07
1.971.7554138.301700e-07
1.977161.7552878.847979e-07
1.986651.7551219.571794e-07
1.996191.7549541.029908e-06
2.005771.7547861.102986e-06
2.01541.7546161.176415e-06
2.025071.7544461.250196e-06
2.034791.7542741.324331e-06
2.044561.7541011.398823e-06
2.054371.7539271.473671e-06
2.064231.7537521.548879e-06
2.074141.7535761.624448e-06
2.084091.7533981.700380e-06
2.09411.7532191.776676e-06
2.104151.7530391.853338e-06
2.114251.7528581.930369e-06
2.12441.7526752.007769e-06
2.134591.7524912.085540e-06
2.144841.7523062.163685e-06
2.155131.7521192.242205e-06
2.165481.7519312.321102e-06
2.175871.7517422.400377e-06
2.186321.7515512.480033e-06
2.196811.7513582.560071e-06
2.207351.7511642.640494e-06
2.217951.7509692.721302e-06
2.228591.7507722.802499e-06
2.239291.7505742.884085e-06
2.250041.7503742.966062e-06
2.260841.7501723.048433e-06
2.271691.7499693.131200e-06
2.282591.7497643.214364e-06
2.293551.7495583.297927e-06
2.304561.749353.381891e-06
2.315621.749143.466258e-06
2.3251.7489623.537800e-06
2.326731.7489293.547766e-06
2.33791.7487163.611934e-06
2.349121.7485013.676409e-06
2.36041.7482843.741194e-06
2.371731.7480663.806290e-06
2.383111.7478453.871698e-06
2.394551.7476233.937421e-06
2.406041.7473994.003458e-06
2.417591.7471734.069813e-06
2.42921.7469454.136486e-06
2.440861.7467154.203480e-06
2.452571.7464834.270794e-06
2.464341.746254.338432e-06
2.476171.7460144.406395e-06
2.488061.7457764.474683e-06
2.51.7455364.543300e-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
—