Optical constants

Refractive index of S-TIM22 (OHARA)

S-TIM22: n,k 0.36–2.4 µm

Data
formula 2 + tabulated k
Range
0.36–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.36–2.4 µm
Refractive index n
1.64769
Extinction coefficient k
1.87414e-08
Permittivity ε1
2.71487
Permittivity ε2
6.17600e-08
Absorption coefficient α
0.00400803 cm⁻¹
Penetration depth δ = λ/(2πk)
4.98998e+09 nm
Abbe number Vd
33.793
Chromatic dispersion dn/dλ
-0.0967815 µm⁻¹
Group index ng
1.70455
Group velocity dispersion
191.117 fs²/mm
Dispersion parameter D
-1042.65 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

# S-TIM22 (OHARA): S-TIM22
ohara_s_tim22 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIM22", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tim22.range_nm)  # (360, 2400) nm
eps = ohara_s_tim22.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=1.44222294λ2λ2−0.0104249404+0.194432265λ2λ2−0.0550235257+1.74092482λ2λ2−169.710769

Valid from 0.36 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.44222294
C30.0104249404
C40.194432265
C50.0550235257
C61.74092482
C7169.710769

Comments and conditions

Recommended - Lightweight

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -1.42e-06 1.44e-08 -3.73e-11 7.64e-07 8.16e-10 0.281
nd
1.647689
Vd
33.792803
glass code
648338
density
value: 2790
thermal expansion
value: 8.3e-06, temperature range: 243 343; value: 9.8e-06, temperature range: 293 573
dPgF
0.007
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 4.94e-07 K⁻¹ at 633 nm, dn/dT = -4.80e-07 K⁻¹ at 1310 nm, dn/dT = -5.47e-07 K⁻¹ at 1550 nm

References

Cite

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp); See also OHARA 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 422 wavelengths, the same grid as the API and the library
S-TIM22 (OHARA), S-TIM22: n and k versus wavelength
λ (µm)nk
0.361.7043889.221400e-06
0.3617161.7033168.141499e-06
0.363441.7022647.056451e-06
0.3651721.701235.966231e-06
0.3669121.7002144.870816e-06
0.3686611.6992173.770180e-06
0.371.6984682.927400e-06
0.3704181.6982362.850116e-06
0.3721831.6972732.523726e-06
0.3739571.6963262.195781e-06
0.375741.6953951.866272e-06
0.377531.694481.535193e-06
0.379331.693581.202536e-06
0.381.693251.078600e-06
0.3811381.6926951.009152e-06
0.3829541.6918258.982505e-07
0.3847791.6909697.868207e-07
0.3866131.6901266.748598e-07
0.3884561.6892975.623654e-07
0.391.6886164.680800e-07
0.3903071.6884814.610111e-07
0.3921671.6876794.181835e-07
0.3940361.6868883.751519e-07
0.3959141.686113.319152e-07
0.3978011.6853442.884723e-07
0.3996971.684592.448225e-07
0.41.6844712.378500e-07
0.4016021.6838472.269516e-07
0.4035161.6831162.139314e-07
0.4054391.6823962.008491e-07
0.4073721.6816861.877044e-07
0.4093131.6809871.744971e-07
0.4112641.6802981.612269e-07
0.4132241.6796191.478934e-07
0.4151931.678951.344963e-07
0.4171721.6782911.210355e-07
0.4191611.6776411.075104e-07
0.421.6773711.018000e-07
0.4211581.6770019.979429e-08
0.4231661.6763699.631845e-08
0.4251821.6757479.282604e-08
0.4272091.6751338.931698e-08
0.4292451.6745288.579120e-08
0.4312911.6739328.224862e-08
0.4333461.6733437.868915e-08
0.4354111.6727637.511272e-08
0.4374871.672197.151925e-08
0.4395721.6716266.790864e-08
0.441.6715116.716700e-08
0.4416671.6710696.587055e-08
0.4437721.6705196.423318e-08
0.4458871.6699776.258801e-08
0.4480121.6694426.093500e-08
0.4501471.6689145.927412e-08
0.4522921.6683935.760531e-08
0.4544481.6678795.592856e-08
0.4566141.6673725.424381e-08
0.458791.6668715.255103e-08
0.461.6665975.161000e-08
0.4609771.6663775.115285e-08
0.4631741.6658895.012465e-08
0.4653811.6654084.909154e-08
0.4675991.6649324.805351e-08
0.4698281.6644634.701054e-08
0.4720671.6639994.596259e-08
0.4743171.6635414.490965e-08
0.4765781.6630894.385169e-08
0.4788491.6626434.278868e-08
0.481.662424.225000e-08
0.4811311.6622024.189493e-08
0.4834241.6617674.117513e-08
0.4857281.6613374.045191e-08
0.4880431.6609123.972523e-08
0.4903691.6604933.899509e-08
0.4927061.6600783.826148e-08
0.4950551.6596693.752436e-08
0.4974141.6592653.678374e-08
0.4997851.6588653.603958e-08
0.51.6588293.597200e-08
0.5021671.658473.517336e-08
0.504561.658083.429118e-08
0.5069651.6576953.340479e-08
0.5093811.6573143.251418e-08
0.5118091.6569373.161933e-08
0.5142481.6565653.072021e-08
0.5166991.6561982.981680e-08
0.5191611.6558342.890909e-08
0.5216361.6554752.799705e-08
0.5241221.655122.708067e-08
0.526621.6547692.615992e-08
0.529131.6544232.523478e-08
0.5316521.654082.430523e-08
0.5341851.6537412.337125e-08
0.5367311.6534052.243282e-08
0.5392891.6530742.148992e-08
0.541861.6527462.054252e-08
0.5444421.6524221.959061e-08
0.5470371.6521021.863416e-08
0.5496441.6517851.767315e-08
0.551.6517421.754200e-08
0.5522641.6514721.761422e-08
0.5548961.6511621.769818e-08
0.5575411.6508561.778254e-08
0.5601981.6505531.786731e-08
0.5628681.6502531.795248e-08
0.565551.6499571.803806e-08
0.5682461.6496631.812404e-08
0.5709541.6493731.821043e-08
0.5736751.6490861.829724e-08
0.5764091.6488031.838446e-08
0.5791561.6485221.847209e-08
0.5819171.6482441.856014e-08
0.584691.6479691.864862e-08
0.5874771.6476971.873751e-08
0.5902771.6474281.882683e-08
0.593091.6471621.891657e-08
0.5959171.6468981.900674e-08
0.5987571.6466371.909734e-08
0.61.6465251.913700e-08
0.601611.6463791.935574e-08
0.6044781.6461241.974517e-08
0.6073591.6458712.013646e-08
0.6102531.6456212.052961e-08
0.6131621.6453742.092464e-08
0.6160841.6451292.132155e-08
0.619021.6448862.172036e-08
0.6219711.6446462.212106e-08
0.6249351.6444082.252368e-08
0.6279131.6441732.292821e-08
0.6309061.643942.333467e-08
0.6339131.643712.374307e-08
0.6369341.6434812.415341e-08
0.639971.6432552.456571e-08
0.643021.6430322.497997e-08
0.6460851.642812.539621e-08
0.6491641.6425912.581444e-08
0.651.6425312.592800e-08
0.6522581.6423732.576535e-08
0.6553661.6421582.554140e-08
0.658491.6419452.531638e-08
0.6616281.6417342.509030e-08
0.6647821.6415252.486313e-08
0.667951.6413182.463488e-08
0.6711331.6411132.440555e-08
0.6743321.640912.417512e-08
0.6775461.6407082.394359e-08
0.6807751.6405092.371096e-08
0.684021.6403112.347722e-08
0.687281.6401162.324237e-08
0.6905551.6399222.300639e-08
0.6938471.639732.276930e-08
0.6971531.639542.253107e-08
0.71.6393782.232600e-08
0.7004761.6393512.228039e-08
0.7038151.6391642.196053e-08
0.7071691.6389792.163915e-08
0.7105391.6387962.131623e-08
0.7139261.6386142.099178e-08
0.7173281.6384342.066578e-08
0.7207471.6382552.033822e-08
0.7241821.6380782.000911e-08
0.7276341.6379031.967842e-08
0.7311021.6377291.934616e-08
0.7345861.6375561.901232e-08
0.7380871.6373851.867688e-08
0.7416051.6372161.833985e-08
0.7451391.6370481.800121e-08
0.7486911.6368811.766096e-08
0.7522591.6367161.731908e-08
0.7558441.6365521.697558e-08
0.7594461.636391.663043e-08
0.7630661.6362291.628365e-08
0.7667031.6360691.593521e-08
0.7703571.6359111.558511e-08
0.7740281.6357541.523334e-08
0.7777171.6355981.487989e-08
0.7814241.6354431.452476e-08
0.7851481.635291.416794e-08
0.788891.6351381.380942e-08
0.792651.6349871.344918e-08
0.7964281.6348371.308724e-08
0.81.6346971.274500e-08
0.8002241.6346881.276463e-08
0.8040381.6345411.309922e-08
0.807871.6343951.343541e-08
0.811721.634251.377320e-08
0.8155891.6341061.411259e-08
0.8194761.6339631.445361e-08
0.8233811.6338211.479625e-08
0.8273061.633681.514052e-08
0.8312491.633541.548644e-08
0.835211.6334011.583400e-08
0.8391911.6332641.618322e-08
0.8431911.6331271.653411e-08
0.8472091.6329911.688666e-08
0.8512471.6328561.724090e-08
0.8553041.6327221.759682e-08
0.859381.6325891.795444e-08
0.8634761.6324571.831377e-08
0.8675921.6323261.867481e-08
0.8717271.6321961.903757e-08
0.8758811.6320661.940206e-08
0.8800561.6319381.976828e-08
0.884251.631812.013625e-08
0.8884641.6316832.050598e-08
0.8926991.6315572.087746e-08
0.8969531.6314322.125072e-08
0.91.6313432.151800e-08
0.9012281.6313082.154737e-08
0.9055241.6311842.165007e-08
0.9098391.6310612.175326e-08
0.9141761.6309392.185694e-08
0.9185331.6308172.196111e-08
0.922911.6306972.206578e-08
0.9273091.6305772.217095e-08
0.9317281.6304572.227663e-08
0.9361691.6303392.238280e-08
0.9406311.6302212.248948e-08
0.9451141.6301042.259667e-08
0.9496181.6299872.270437e-08
0.9541441.6298712.281259e-08
0.9586921.6297562.292132e-08
0.9632611.6296412.303057e-08
0.9678521.6295272.314033e-08
0.9724641.6294132.325063e-08
0.9770991.62932.336144e-08
0.9817561.6291882.347279e-08
0.9864351.6290762.358466e-08
0.9911371.6289652.369707e-08
0.995861.6288542.381002e-08
11.6287572.390900e-08
1.000611.6287432.395257e-08
1.005381.6286342.429509e-08
1.010171.6285242.463925e-08
1.014981.6284162.498505e-08
1.019821.6283072.533250e-08
1.024681.6281992.568160e-08
1.029561.6280922.603237e-08
1.034471.6279852.638481e-08
1.03941.6278782.673892e-08
1.044351.6277722.709473e-08
1.049331.6276672.745223e-08
1.054331.6275612.781144e-08
1.059361.6274562.817236e-08
1.064411.6273522.853499e-08
1.069481.6272482.889936e-08
1.074581.6271442.926546e-08
1.07971.627042.963331e-08
1.084841.6269373.000291e-08
1.090011.6268343.037427e-08
1.095211.6267323.074740e-08
1.100431.6266293.112231e-08
1.105671.6265273.149901e-08
1.110941.6264263.187750e-08
1.116241.6263243.225780e-08
1.121561.6262233.263991e-08
1.12691.6261223.302384e-08
1.132271.6260223.340960e-08
1.137671.6259213.379720e-08
1.143091.6258213.418664e-08
1.148541.6257213.457795e-08
1.154011.6256213.497111e-08
1.159511.6255223.536615e-08
1.165041.6254223.576308e-08
1.170591.6253233.616189e-08
1.176171.6252243.656261e-08
1.181781.6251253.696523e-08
1.187411.6250263.736978e-08
1.193071.6249273.777625e-08
1.198761.6248293.818466e-08
1.21.6248073.827400e-08
1.204471.624733.916757e-08
1.210211.6246324.031527e-08
1.215981.6245344.146845e-08
1.221771.6244364.262711e-08
1.22761.6243374.379130e-08
1.233451.6242394.496104e-08
1.239331.6241414.613635e-08
1.245231.6240444.731726e-08
1.251171.6239464.850380e-08
1.257131.6238484.969600e-08
1.263121.623755.089388e-08
1.269141.6236525.209747e-08
1.275191.6235545.330679e-08
1.281271.6234565.452188e-08
1.287371.6233585.574276e-08
1.293511.623265.696946e-08
1.299671.6231625.820200e-08
1.305871.6230645.944042e-08
1.312091.6229666.068474e-08
1.318351.6228686.193499e-08
1.324631.622776.319120e-08
1.330941.6226726.445340e-08
1.337291.6225736.572161e-08
1.343661.6224756.699587e-08
1.350061.6223766.827620e-08
1.35651.6222776.956263e-08
1.362961.6221787.085520e-08
1.369461.6220797.215392e-08
1.375991.621987.345883e-08
1.382541.621887.476997e-08
1.389131.6217817.608735e-08
1.395751.6216817.741101e-08
1.41.6216177.826000e-08
1.402411.6215817.870326e-08
1.409091.6214817.993476e-08
1.415811.621388.117213e-08
1.422551.621288.241541e-08
1.429331.6211798.366460e-08
1.436151.6210788.491975e-08
1.442991.6209768.618088e-08
1.449871.6208758.744803e-08
1.456781.6207738.872121e-08
1.463721.6206719.000046e-08
1.47071.6205689.128581e-08
1.477711.6204659.257728e-08
1.484751.6203629.387491e-08
1.491821.6202599.517872e-08
1.498931.6201559.648875e-08
1.506081.6200519.780502e-08
1.513261.6199469.912756e-08
1.520471.6198411.004564e-07
1.527721.6197361.017916e-07
1.5351.619631.031331e-07
1.542311.6195241.044811e-07
1.549661.6194181.058354e-07
1.557051.6193111.071962e-07
1.564471.6192041.085635e-07
1.571931.6190961.099374e-07
1.579421.6189881.113177e-07
1.586951.6188791.127047e-07
1.594511.618771.140982e-07
1.61.6186911.151100e-07
1.602111.618661.167930e-07
1.609741.618551.228885e-07
1.617421.618441.290131e-07
1.625121.6183291.351669e-07
1.632871.6182171.413500e-07
1.640651.6181051.475626e-07
1.648471.6179921.538048e-07
1.656331.6178791.600767e-07
1.664221.6177651.663786e-07
1.672151.617651.727105e-07
1.680121.6175351.790725e-07
1.688131.6174191.854649e-07
1.696181.6173031.918877e-07
1.704261.6171861.983412e-07
1.712381.6170692.048254e-07
1.720541.616952.113405e-07
1.728741.6168312.178866e-07
1.736981.6167122.244640e-07
1.745261.6165922.310727e-07
1.753581.6164712.377129e-07
1.761941.6163492.443848e-07
1.770331.6162272.510884e-07
1.778771.6161032.578240e-07
1.787251.6159792.645917e-07
1.795771.6158552.713917e-07
1.81.6157932.747700e-07
1.804331.6157292.793131e-07
1.812931.6156032.883425e-07
1.821571.6154762.974149e-07
1.830251.6153483.065306e-07
1.838971.6152193.156898e-07
1.847741.615093.248925e-07
1.856541.614963.341392e-07
1.865391.6148283.434299e-07
1.874281.6146963.527649e-07
1.883211.6145633.621444e-07
1.892191.6144293.715685e-07
1.901211.6142943.810376e-07
1.910271.6141593.905519e-07
1.919371.6140224.001114e-07
1.928521.6138844.097166e-07
1.937711.6137454.193675e-07
1.946951.6136064.290644e-07
1.956231.6134654.388075e-07
1.965551.6133234.485971e-07
1.974921.6131814.584333e-07
1.984331.6130374.683164e-07
1.993791.6128924.782466e-07
21.6127964.847700e-07
2.003291.6127464.964585e-07
2.012841.6125995.303829e-07
2.022431.6124515.644690e-07
2.032071.6123015.987175e-07
2.041751.6121516.331293e-07
2.051491.6119996.677051e-07
2.061261.6118477.024456e-07
2.071091.6116937.373517e-07
2.080961.6115377.724242e-07
2.090881.6113818.076639e-07
2.100841.6112238.430715e-07
2.110851.6110648.786478e-07
2.120911.6109049.143937e-07
2.131021.6107439.503100e-07
2.141181.610589.863975e-07
2.151381.6104161.022657e-06
2.161641.610251.059089e-06
2.171941.6100841.095695e-06
2.182291.6099151.132475e-06
2.192691.6097461.169431e-06
2.21.6096261.195400e-06
2.203141.6095751.202945e-06
2.213641.6094021.228161e-06
2.224191.6092291.253497e-06
2.234791.6090531.278954e-06
2.245441.6088761.304533e-06
2.256151.6086981.330233e-06
2.26691.6085181.356056e-06
2.27771.6083371.382002e-06
2.288561.6081541.408072e-06
2.299471.6079691.434266e-06
2.310421.6077831.460584e-06
2.321441.6075951.487028e-06
2.33251.6074051.513599e-06
2.343621.6072141.540295e-06
2.354791.6070211.567119e-06
2.366011.6068271.594071e-06
2.377291.606631.621152e-06
2.388621.6064321.648361e-06
2.41.6062321.675700e-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
—