Optical constants

Refractive index of S-TIM1 (OHARA)

S-TIM1: 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
1.62588
Extinction coefficient k
1.40486e-08
Permittivity ε1
2.64348
Permittivity ε2
4.56828e-08
Absorption coefficient α
0.00300443 cm⁻¹
Penetration depth δ = λ/(2πk)
6.65683e+09 nm
Abbe number Vd
35.7
Chromatic dispersion dn/dλ
-0.0887335 µm⁻¹
Group index ng
1.67802
Group velocity dispersion
173.024 fs²/mm
Dispersion parameter D
-943.937 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-TIM1 (OHARA): S-TIM1
ohara_s_tim1 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIM1", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tim1.range_nm)  # (360, 2400) nm
eps = ohara_s_tim1.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=1.4496383λ2λ2−0.0112094282+0.122986408λ2λ2−0.059626577+1.38066723λ2λ2−138.178326

Valid from 0.36 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.4496383
C30.0112094282
C40.122986408
C50.059626577
C61.38066723
C7138.178326

Comments and conditions

Recommended - Lightweight

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -2.39e-07 1.37e-08 -4.03e-11 6.89e-07 6.08e-10 0.284
nd
1.625882
Vd
35.699614
glass code
626357
density
value: 2710
thermal expansion
value: 8.1e-06, temperature range: 243 343; value: 9.6e-06, temperature range: 293 573
dPgF
0.0056
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 9.63e-07 K⁻¹ at 633 nm, dn/dT = 8.92e-08 K⁻¹ at 1310 nm, dn/dT = 2.81e-08 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-TIM1 (OHARA), S-TIM1: n and k versus wavelength
λ (µm)nk
0.361.6773146.898300e-06
0.3617161.6763446.096147e-06
0.363441.6753915.290170e-06
0.3651721.6744554.480352e-06
0.3669121.6735363.666675e-06
0.3686611.6726342.849119e-06
0.371.6719562.223100e-06
0.3704181.6717472.164861e-06
0.3721831.6708761.918899e-06
0.3739571.670021.671766e-06
0.375741.6691791.423455e-06
0.377531.6683511.173960e-06
0.379331.6675389.232761e-07
0.381.6672398.298800e-07
0.3811381.6667387.766199e-07
0.3829541.6659516.915693e-07
0.3847791.6651786.061134e-07
0.3866131.6644165.202502e-07
0.3884561.6636674.339778e-07
0.391.6630513.616700e-07
0.3903071.662933.560942e-07
0.3921671.6622053.223128e-07
0.3940361.661492.883705e-07
0.3959141.6607872.542664e-07
0.3978011.6600952.199997e-07
0.3996971.6594131.855697e-07
0.41.6593061.800700e-07
0.4016021.6587421.718752e-07
0.4035161.6580811.620849e-07
0.4054391.6574291.522479e-07
0.4073721.6567881.423641e-07
0.4093131.6561561.324331e-07
0.4112641.6555331.224548e-07
0.4132241.6549191.124290e-07
0.4151931.6543141.023553e-07
0.4171721.6537179.223370e-08
0.4191611.653138.206382e-08
0.421.6528857.777000e-08
0.4211581.652557.653679e-08
0.4231661.6519797.439968e-08
0.4251821.6514157.225238e-08
0.4272091.650867.009485e-08
0.4292451.6503126.792704e-08
0.4312911.6497726.574889e-08
0.4333461.6492396.356036e-08
0.4354111.6487136.136140e-08
0.4374871.6481955.915197e-08
0.4395721.6476835.693200e-08
0.441.6475795.647600e-08
0.4416671.6471785.576123e-08
0.4437721.646685.485851e-08
0.4458871.6461895.395148e-08
0.4480121.6457045.304013e-08
0.4501471.6452255.212444e-08
0.4522921.6447525.120438e-08
0.4544481.6442865.027994e-08
0.4566141.6438264.935109e-08
0.458791.6433714.841782e-08
0.461.6431224.789900e-08
0.4609771.6429234.743453e-08
0.4631741.642484.638984e-08
0.4653811.6420424.534018e-08
0.4675991.6416114.428552e-08
0.4698281.6411844.322583e-08
0.4720671.6407634.216109e-08
0.4743171.6403474.109127e-08
0.4765781.6399364.001636e-08
0.4788491.6395313.893632e-08
0.481.6393283.838900e-08
0.4811311.639133.802533e-08
0.4834241.6387343.728811e-08
0.4857281.6383433.654737e-08
0.4880431.6379563.580310e-08
0.4903691.6375753.505529e-08
0.4927061.6371983.430391e-08
0.4950551.6368253.354895e-08
0.4974141.6364573.279039e-08
0.4997851.6360933.202822e-08
0.51.636063.195900e-08
0.5021671.6357333.114394e-08
0.504561.6353783.024361e-08
0.5069651.6350272.933900e-08
0.5093811.6346792.843008e-08
0.5118091.6343362.751682e-08
0.5142481.6339972.659921e-08
0.5166991.6336622.567722e-08
0.5191611.633332.475085e-08
0.5216361.6330032.382005e-08
0.5241221.6326792.288483e-08
0.526621.6323592.194514e-08
0.529131.6320422.100098e-08
0.5316521.6317292.005231e-08
0.5341851.6314191.909912e-08
0.5367311.6311131.814140e-08
0.5392891.630811.717910e-08
0.541861.6305111.621222e-08
0.5444421.6302151.524074e-08
0.5470371.6299221.426462e-08
0.5496441.6296321.328385e-08
0.551.6295931.315000e-08
0.5522641.6293461.320410e-08
0.5548961.6290631.326701e-08
0.5575411.6287821.333022e-08
0.5601981.6285051.339373e-08
0.5628681.6282311.345754e-08
0.565551.6279591.352165e-08
0.5682461.6276911.358607e-08
0.5709541.6274251.365080e-08
0.5736751.6271631.371584e-08
0.5764091.6269031.378118e-08
0.5791561.6266451.384684e-08
0.5819171.6263911.391281e-08
0.584691.6261391.397909e-08
0.5874771.6258891.404570e-08
0.5902771.6256431.411261e-08
0.593091.6253981.417985e-08
0.5959171.6251571.424741e-08
0.5987571.6249181.431529e-08
0.61.6248141.434500e-08
0.601611.6246811.455072e-08
0.6044781.6244461.491699e-08
0.6073591.6242141.528500e-08
0.6102531.6239851.565477e-08
0.6131621.6237571.602630e-08
0.6160841.6235321.639959e-08
0.619021.623311.677467e-08
0.6219711.6230891.715154e-08
0.6249351.6228711.753020e-08
0.6279131.6226541.791067e-08
0.6309061.622441.829295e-08
0.6339131.6222281.867705e-08
0.6369341.6220181.906298e-08
0.639971.621811.945075e-08
0.643021.6216041.984037e-08
0.6460851.62142.023185e-08
0.6491641.6211982.062519e-08
0.651.6211442.073200e-08
0.6522581.6209982.055156e-08
0.6553661.62082.030311e-08
0.658491.6206042.005348e-08
0.6616281.6204091.980267e-08
0.6647821.6202171.955065e-08
0.667951.6200261.929744e-08
0.6711331.6198371.904302e-08
0.6743321.619651.878738e-08
0.6775461.6194641.853053e-08
0.6807751.619281.827245e-08
0.684021.6190981.801314e-08
0.687281.6189181.775260e-08
0.6905551.6187391.749082e-08
0.6938471.6185611.722779e-08
0.6971531.6183861.696350e-08
0.71.6182371.673600e-08
0.7004761.6182121.671700e-08
0.7038151.6180391.658376e-08
0.7071691.6178681.644989e-08
0.7105391.6176991.631538e-08
0.7139261.6175311.618022e-08
0.7173281.6173641.604443e-08
0.7207471.6171991.590798e-08
0.7241821.6170351.577089e-08
0.7276341.6168731.563314e-08
0.7311021.6167121.549474e-08
0.7345861.6165521.535567e-08
0.7380871.6163941.521595e-08
0.7416051.6162371.507555e-08
0.7451391.6160821.493449e-08
0.7486911.6159281.479276e-08
0.7522591.6157751.465035e-08
0.7558441.6156231.450726e-08
0.7594461.6154721.436349e-08
0.7630661.6153231.421904e-08
0.7667031.6151751.407389e-08
0.7703571.6150281.392806e-08
0.7740281.6148821.378153e-08
0.7777171.6147381.363430e-08
0.7814241.6145941.348637e-08
0.7851481.6144521.333773e-08
0.788891.6143111.318839e-08
0.792651.6141711.303833e-08
0.7964281.6140311.288756e-08
0.81.6139021.274500e-08
0.8002241.6138931.274856e-08
0.8040381.6137561.280932e-08
0.807871.6136211.287036e-08
0.811721.6134861.293170e-08
0.8155891.6133521.299333e-08
0.8194761.6132191.305525e-08
0.8233811.6130871.311747e-08
0.8273061.6129561.317998e-08
0.8312491.6128251.324279e-08
0.835211.6126961.330590e-08
0.8391911.6125681.336931e-08
0.8431911.612441.343303e-08
0.8472091.6123141.349704e-08
0.8512471.6121881.356136e-08
0.8553041.6120631.362599e-08
0.859381.6119391.369093e-08
0.8634761.6118161.375618e-08
0.8675921.6116941.382173e-08
0.8717271.6115721.388760e-08
0.8758811.6114521.395379e-08
0.8800561.6113321.402029e-08
0.884251.6112121.408710e-08
0.8884641.6110941.415424e-08
0.8926991.6109761.422169e-08
0.8969531.6108591.428947e-08
0.91.6107761.433800e-08
0.9012281.6107431.435757e-08
0.9055241.6106271.442599e-08
0.9098391.6105121.449474e-08
0.9141761.6103981.456382e-08
0.9185331.6102841.463322e-08
0.922911.6101711.470296e-08
0.9273091.6100591.477303e-08
0.9317281.6099471.484343e-08
0.9361691.6098361.491417e-08
0.9406311.6097251.498525e-08
0.9451141.6096151.505666e-08
0.9496181.6095061.512842e-08
0.9541441.6093971.520052e-08
0.9586921.6092891.527296e-08
0.9632611.6091811.534574e-08
0.9678521.6090741.541888e-08
0.9724641.6089671.549236e-08
0.9770991.6088611.556619e-08
0.9817561.6087551.564037e-08
0.9864351.608651.571491e-08
0.9911371.6085461.578980e-08
0.995861.6084411.586505e-08
11.6083511.593100e-08
1.000611.6083381.594067e-08
1.005381.6082341.601666e-08
1.010171.6081311.609301e-08
1.014981.6080291.616973e-08
1.019821.6079271.624682e-08
1.024681.6078251.632427e-08
1.029561.6077241.640209e-08
1.034471.6076231.648028e-08
1.03941.6075221.655884e-08
1.044351.6074221.663778e-08
1.049331.6073221.671710e-08
1.054331.6072231.679679e-08
1.059361.6071241.687686e-08
1.064411.6070251.695732e-08
1.069481.6069261.703815e-08
1.074581.6068281.711938e-08
1.07971.606731.720099e-08
1.084841.6066331.728299e-08
1.090011.6065351.736538e-08
1.095211.6064381.744816e-08
1.100431.6063411.753134e-08
1.105671.6062451.761491e-08
1.110941.6061481.769888e-08
1.116241.6060521.778325e-08
1.121561.6059561.786803e-08
1.12691.605861.795321e-08
1.132271.6057651.803879e-08
1.137671.6056691.812478e-08
1.143091.6055741.821118e-08
1.148541.6054791.829800e-08
1.154011.6053841.838523e-08
1.159511.6052891.847287e-08
1.165041.6051951.856093e-08
1.170591.60511.864941e-08
1.176171.6050061.873831e-08
1.181781.6049121.882764e-08
1.187411.6048181.891739e-08
1.193071.6047241.900757e-08
1.198761.604631.909818e-08
1.21.6046091.911800e-08
1.204471.6045362.043966e-08
1.210211.6044422.213718e-08
1.215981.6043482.384280e-08
1.221771.6042542.555655e-08
1.22761.6041612.727846e-08
1.233451.6040672.900858e-08
1.239331.6039733.074695e-08
1.245231.603883.249360e-08
1.251171.6037863.424857e-08
1.257131.6036923.601191e-08
1.263121.6035993.778366e-08
1.269141.6035053.956385e-08
1.275191.6034114.135252e-08
1.281271.6033174.314972e-08
1.287371.6032234.495548e-08
1.293511.6031294.676985e-08
1.299671.6030354.859286e-08
1.305871.6029415.042457e-08
1.312091.6028475.226500e-08
1.318351.6027535.411421e-08
1.324631.6026585.597223e-08
1.330941.6025645.783911e-08
1.337291.6024695.971488e-08
1.343661.6023746.159959e-08
1.350061.6022796.349329e-08
1.35651.6021846.539601e-08
1.362961.6020896.730780e-08
1.369461.6019936.922870e-08
1.375991.6018987.115875e-08
1.382541.6018027.309801e-08
1.389131.6017067.504650e-08
1.395751.601617.700429e-08
1.41.6015487.826000e-08
1.402411.6015137.839448e-08
1.409091.6014167.876811e-08
1.415811.6013197.914352e-08
1.422551.6012227.952072e-08
1.429331.6011257.989971e-08
1.436151.6010278.028052e-08
1.442991.6009298.066313e-08
1.449871.600838.104758e-08
1.456781.6007328.143385e-08
1.463721.6006338.182196e-08
1.47071.6005338.221193e-08
1.477711.6004348.260375e-08
1.484751.6003348.299744e-08
1.491821.6002348.339301e-08
1.498931.6001338.379046e-08
1.506081.6000328.418980e-08
1.513261.599938.459105e-08
1.520471.5998298.499422e-08
1.527721.5997268.539930e-08
1.5351.5996248.580631e-08
1.542311.5995218.621527e-08
1.549661.5994178.662617e-08
1.557051.5993138.703903e-08
1.564471.5992098.745386e-08
1.571931.5991048.787066e-08
1.579421.5989988.828946e-08
1.586951.5988938.871024e-08
1.594511.5987868.913304e-08
1.61.5987098.944000e-08
1.602111.5986799.154754e-08
1.609741.5985729.918091e-08
1.617421.5984641.068507e-07
1.625121.5983561.145570e-07
1.632871.5982471.223000e-07
1.640651.5981371.300799e-07
1.648471.5980271.378969e-07
1.656331.5979171.457512e-07
1.664221.5978051.536429e-07
1.672151.5976931.615722e-07
1.680121.5975811.695394e-07
1.688131.5974681.775444e-07
1.696181.5973541.855877e-07
1.704261.5972391.936692e-07
1.712381.5971242.017893e-07
1.720541.5970092.099481e-07
1.728741.5968922.181458e-07
1.736981.5967752.263825e-07
1.745261.5966572.346585e-07
1.753581.5965392.429739e-07
1.761941.5964192.513290e-07
1.770331.5962992.597239e-07
1.778771.5961782.681588e-07
1.787251.5960572.766339e-07
1.795771.5959342.851494e-07
1.81.5958732.893800e-07
1.804331.5958112.953864e-07
1.812931.5956873.073241e-07
1.821571.5955623.193188e-07
1.830251.5954373.313706e-07
1.838971.595313.434798e-07
1.847741.5951833.556468e-07
1.856541.5950553.678717e-07
1.865391.5949253.801549e-07
1.874281.5947953.924967e-07
1.883211.5946644.048972e-07
1.892191.5945324.173569e-07
1.901211.59444.298759e-07
1.910271.5942664.424546e-07
1.919371.5941314.550933e-07
1.928521.5939954.677922e-07
1.937711.5938594.805516e-07
1.946951.5937214.933719e-07
1.956231.5935825.062532e-07
1.965551.5934425.191959e-07
1.974921.5933015.322004e-07
1.984331.5931595.452668e-07
1.993791.5930165.583954e-07
21.5929225.670200e-07
2.003291.5928725.826438e-07
2.012841.5927276.279896e-07
2.022431.592586.735515e-07
2.032071.5924337.193306e-07
2.041751.5922847.653279e-07
2.051491.5921348.115444e-07
2.061261.5919838.579811e-07
2.071091.591839.046392e-07
2.080961.5916779.515197e-07
2.090881.5915229.986236e-07
2.100841.5913661.045952e-06
2.110851.5912081.093506e-06
2.120911.591051.141286e-06
2.131021.590891.189295e-06
2.141181.5907281.237532e-06
2.151381.5905661.285999e-06
2.161641.5904021.334697e-06
2.171941.5902361.383627e-06
2.182291.5900691.432790e-06
2.192691.5899011.482188e-06
2.21.5897821.516900e-06
2.203141.5897311.528033e-06
2.213641.589561.565240e-06
2.224191.5893871.602625e-06
2.234791.5892131.640188e-06
2.245441.5890371.677930e-06
2.256151.588861.715851e-06
2.26691.5886811.753954e-06
2.27771.5885011.792238e-06
2.288561.5883191.830705e-06
2.299471.5881351.869355e-06
2.310421.587951.908189e-06
2.321441.5877631.947208e-06
2.33251.5875741.986413e-06
2.343621.5873832.025806e-06
2.354791.5871912.065385e-06
2.366011.5869972.105154e-06
2.377291.5868022.145112e-06
2.388621.5866042.185260e-06
2.41.5864052.225600e-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
—