Optical constants

Refractive index of S-BSM10 (OHARA)

S-BSM10: n,k 0.31–2.4 µm

Data
formula 2 + tabulated k
Range
0.31–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.31–2.4 µm
Refractive index n
1.6228
Extinction coefficient k
9.36134e-09
Permittivity ε1
2.63347
Permittivity ε2
3.03831e-08
Absorption coefficient α
0.00200201 cm⁻¹
Penetration depth δ = λ/(2πk)
9.98996e+09 nm
Abbe number Vd
57.053
Chromatic dispersion dn/dλ
-0.0562998 µm⁻¹
Group index ng
1.65588
Group velocity dispersion
99.7239 fs²/mm
Dispersion parameter D
-544.047 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-BSM10 (OHARA): S-BSM10
ohara_s_bsm10 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-BSM10", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_bsm10.range_nm)  # (310, 2400) nm
eps = ohara_s_bsm10.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=0.945443081λ2λ2−0.0157263798+0.643237376λ2λ2−0.00161924066+1.17752968λ2λ2−121.361748

Valid from 0.31 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C20.945443081
C30.0157263798
C40.643237376
C50.00161924066
C61.17752968
C7121.361748

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 1.16e-06 1.34e-08 -3.75e-11 4.33e-07 3.86e-10 0.213
nd
1.622799
Vd
57.052723
glass code
623570
density
value: 3600
thermal expansion
value: 6.5e-06, temperature range: 243 343; value: 7.6e-06, temperature range: 293 573
dPgF
-0.0028
resistance
acid: 51.2; climatic: 2.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 1.19e-06 K⁻¹ at 633 nm, dn/dT = 6.98e-07 K⁻¹ at 1310 nm, dn/dT = 6.58e-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 427 wavelengths, the same grid as the API and the library
S-BSM10 (OHARA), S-BSM10: n and k versus wavelength
λ (µm)nk
0.311.6684616.230700e-06
0.3115941.6677495.712851e-06
0.3131971.6670465.192339e-06
0.3148071.6663524.669150e-06
0.3164261.6656684.143270e-06
0.3180531.6649933.614686e-06
0.3196891.6643263.083384e-06
0.321.6642012.982400e-06
0.3213331.6636692.781599e-06
0.3229861.663022.532700e-06
0.3246471.662382.282521e-06
0.3263161.6617482.031055e-06
0.3279941.6611251.778296e-06
0.3296811.6605091.524237e-06
0.331.6603941.476200e-06
0.3313761.6599021.380142e-06
0.3330811.6593021.261220e-06
0.3347941.658711.141686e-06
0.3365151.6581261.021538e-06
0.3382461.657559.007716e-07
0.3399851.656987.793842e-07
0.341.6569767.783600e-07
0.3417341.6564187.162417e-07
0.3434911.6558636.532755e-07
0.3452581.6553165.899854e-07
0.3470331.6547755.263698e-07
0.3488181.6542414.624271e-07
0.351.6538924.200700e-07
0.3506121.6537134.072813e-07
0.3524151.6531933.695809e-07
0.3542271.6526783.316867e-07
0.3560491.6521712.935977e-07
0.357881.6516692.553127e-07
0.359721.6511742.168309e-07
0.361.6510992.109800e-07
0.361571.6506851.957643e-07
0.363431.6502021.777447e-07
0.3652981.6497251.596324e-07
0.3671771.6492541.414269e-07
0.3690651.6487881.231278e-07
0.371.6485611.140700e-07
0.3709631.6483291.098597e-07
0.3728711.6478751.015216e-07
0.3747891.6474269.314059e-08
0.3767161.6469838.471651e-08
0.3786531.6465457.624910e-08
0.381.6462457.036300e-08
0.3806011.6461136.876510e-08
0.3825581.6456866.355734e-08
0.3845251.6452645.832281e-08
0.3865031.6448475.306135e-08
0.388491.6444354.777283e-08
0.391.6441264.375600e-08
0.3904881.6440274.302482e-08
0.3924961.6436254.001703e-08
0.3945151.6432283.699377e-08
0.3965441.6428353.395497e-08
0.3985831.6424473.090054e-08
0.41.6421812.877800e-08
0.4006331.6420642.850393e-08
0.4026931.6416852.761141e-08
0.4047641.641312.671429e-08
0.4068451.640942.581257e-08
0.4089381.6405742.490620e-08
0.4110411.6402132.399517e-08
0.4131551.6398552.307946e-08
0.4152791.6395022.215904e-08
0.4174151.6391532.123389e-08
0.4195611.6388082.030398e-08
0.421.6387382.011400e-08
0.4217191.6384671.989370e-08
0.4238881.638131.961577e-08
0.4260681.6377971.933642e-08
0.4282591.6374671.905563e-08
0.4304611.6371421.877339e-08
0.4326751.636821.848971e-08
0.43491.6365021.820456e-08
0.4371371.6361871.791795e-08
0.4393851.6358761.762986e-08
0.441.6357921.755100e-08
0.4416441.6355681.731432e-08
0.4439151.6352641.698738e-08
0.4461981.6349631.665876e-08
0.4484931.6346661.632844e-08
0.4507991.6343721.599643e-08
0.4531181.6340821.566271e-08
0.4554481.6337941.532728e-08
0.457791.633511.499012e-08
0.461.6332461.467200e-08
0.4601441.6332291.464894e-08
0.4625111.6329511.427080e-08
0.4648891.6326761.389071e-08
0.467281.6324041.350866e-08
0.4696831.6321351.312466e-08
0.4720981.6318691.273868e-08
0.4745261.6316061.235071e-08
0.4769671.6313461.196075e-08
0.4794191.6310891.156878e-08
0.481.6310281.147600e-08
0.4818851.6308341.114518e-08
0.4843631.6305821.071022e-08
0.4868541.6303331.027303e-08
0.4893581.6300879.833592e-09
0.4918741.6298439.391894e-09
0.4944041.6296028.947924e-09
0.4969461.6293648.501671e-09
0.4995021.6291288.053122e-09
0.51.6290827.965700e-09
0.5020711.6288947.998690e-09
0.5046531.6286638.039826e-09
0.5072481.6284358.081173e-09
0.5098561.6282098.122733e-09
0.5124781.6279858.164507e-09
0.5151141.6277648.206495e-09
0.5177631.6275458.248700e-09
0.5204261.6273288.291122e-09
0.5231021.6271138.333761e-09
0.5257921.6269018.376620e-09
0.5284961.6266918.419700e-09
0.5312141.6264838.463001e-09
0.5339461.6262788.506524e-09
0.5366921.6260748.550272e-09
0.5394521.6258728.594244e-09
0.5422261.6256738.638443e-09
0.5450141.6254758.682869e-09
0.5478171.625288.727523e-09
0.551.625138.762300e-09
0.5506341.6250878.772407e-09
0.5534661.6248958.817522e-09
0.5563121.6247058.862868e-09
0.5591731.6245188.908448e-09
0.5620491.6243328.954263e-09
0.5649391.6241489.000313e-09
0.5678451.6239669.046600e-09
0.5707651.6237869.093125e-09
0.57371.6236079.139889e-09
0.576651.623439.186893e-09
0.5796161.6232559.234140e-09
0.5825971.6230829.281629e-09
0.5855931.622919.329363e-09
0.5886041.622749.377342e-09
0.5916311.6225729.425567e-09
0.5946741.6224059.474041e-09
0.5977321.622249.522764e-09
0.61.6221199.558900e-09
0.6008061.6220779.655305e-09
0.6038961.6219151.002497e-08
0.6070011.6217541.039653e-08
0.6101231.6215951.077000e-08
0.613261.6214381.114539e-08
0.6164141.6212821.152272e-08
0.6195841.6211281.190198e-08
0.622771.6209751.228320e-08
0.6259731.6208231.266637e-08
0.6291921.6206731.305152e-08
0.6324281.6205241.343864e-08
0.635681.6203761.382776e-08
0.6389491.620231.421888e-08
0.6422351.6200851.461201e-08
0.6455381.6199421.500716e-08
0.6488581.61981.540434e-08
0.651.6197511.554100e-08
0.6521951.6196591.534836e-08
0.6555491.6195191.505394e-08
0.658921.619381.475802e-08
0.6623081.6192431.446057e-08
0.6657141.6191071.416159e-08
0.6691381.6189721.386107e-08
0.6725791.6188381.355901e-08
0.6760381.6187061.325539e-08
0.6795151.6185741.295022e-08
0.6830091.6184441.264347e-08
0.6865211.6183151.233515e-08
0.6900521.6181871.202524e-08
0.6936011.618061.171373e-08
0.6971681.6179341.140063e-08
0.71.6178351.115200e-08
0.7007531.6178091.116399e-08
0.7043571.6176851.122140e-08
0.7079791.6175621.127910e-08
0.711621.617441.133710e-08
0.7152791.6173191.139540e-08
0.7189581.6171991.145400e-08
0.7226551.617081.151290e-08
0.7263711.6169621.157210e-08
0.7301071.6168441.163160e-08
0.7338621.6167281.169141e-08
0.7376361.6166131.175153e-08
0.7414291.6164981.181196e-08
0.7452421.6163851.187270e-08
0.7490741.6162721.193375e-08
0.7529271.616161.199512e-08
0.7567991.6160491.205680e-08
0.760691.6159381.211880e-08
0.7646021.6158291.218112e-08
0.7685351.615721.224375e-08
0.7724871.6156121.230671e-08
0.7764591.6155051.237000e-08
0.7804521.6153991.243361e-08
0.7844661.6152931.249754e-08
0.78851.6151881.256181e-08
0.7925551.6150841.262640e-08
0.7966311.614981.269133e-08
0.81.6148951.274500e-08
0.8007281.6148771.275659e-08
0.8048461.6147751.282219e-08
0.8089851.6146731.288813e-08
0.8131451.6145721.295440e-08
0.8173271.6144721.302101e-08
0.821531.6143721.308797e-08
0.8257551.6142731.315527e-08
0.8300011.6141751.322292e-08
0.834271.6140771.329092e-08
0.838561.613981.335926e-08
0.8428721.6138831.342796e-08
0.8472071.6137871.349701e-08
0.8515641.6136911.356641e-08
0.8559431.6135961.363617e-08
0.8603451.6135021.370630e-08
0.8647691.6134081.377678e-08
0.8692171.6133141.384762e-08
0.8736871.6132211.391883e-08
0.878181.6131291.399040e-08
0.8826961.6130371.406234e-08
0.8872351.6129451.413466e-08
0.8917981.6128541.420734e-08
0.8963841.6127631.428040e-08
0.91.6126921.433800e-08
0.9009941.6126731.443313e-08
0.9056271.6125831.487660e-08
0.9102851.6124941.532235e-08
0.9149661.6124051.577039e-08
0.9196711.6123161.622074e-08
0.9244011.6122281.667340e-08
0.9291551.612141.712839e-08
0.9339331.6120521.758573e-08
0.9387361.6119651.804541e-08
0.9435631.6118781.850746e-08
0.9484161.6117911.897188e-08
0.9532931.6117051.943869e-08
0.9581961.6116191.990790e-08
0.9631231.6115342.037953e-08
0.9680761.6114482.085358e-08
0.9730551.6113632.133007e-08
0.9780591.6112792.180900e-08
0.9830891.6111942.229041e-08
0.9881441.611112.277428e-08
0.9932261.6110262.326065e-08
0.9983341.6109422.374952e-08
11.6109152.390900e-08
1.003471.6108582.399191e-08
1.008631.6107752.411530e-08
1.013821.6106922.423932e-08
1.019031.6106092.436398e-08
1.024271.6105262.448928e-08
1.029541.6104442.461523e-08
1.034831.6103612.474182e-08
1.040151.6102792.486906e-08
1.04551.6101972.499696e-08
1.050881.6101152.512551e-08
1.056281.6100332.525473e-08
1.061721.6099512.538461e-08
1.067181.609872.551516e-08
1.072661.6097882.564638e-08
1.078181.6097072.577827e-08
1.083721.6096252.591085e-08
1.08931.6095442.604410e-08
1.09491.6094632.617804e-08
1.100531.6093822.631267e-08
1.106191.6093012.644799e-08
1.111881.6092192.658401e-08
1.11761.6091382.672073e-08
1.123341.6090572.685815e-08
1.129121.6089762.699628e-08
1.134931.6088952.713511e-08
1.140761.6088142.727466e-08
1.146631.6087332.741493e-08
1.152531.6086522.755592e-08
1.158451.6085712.769764e-08
1.164411.608492.784008e-08
1.17041.6084092.798326e-08
1.176421.6083282.812717e-08
1.182471.6082462.827182e-08
1.188551.6081652.841722e-08
1.194661.6080832.856336e-08
1.21.6080132.869100e-08
1.200811.6080022.902641e-08
1.206981.607923.159778e-08
1.213191.6078383.418236e-08
1.219431.6077563.678024e-08
1.22571.6076743.939148e-08
1.2321.6075924.201615e-08
1.238341.607514.465431e-08
1.244711.6074274.730605e-08
1.251111.6073444.997142e-08
1.257541.6072625.265049e-08
1.264011.6071785.534335e-08
1.270511.6070955.805005e-08
1.277041.6070126.077067e-08
1.283611.6069286.350528e-08
1.290211.6068446.625396e-08
1.296841.606766.901677e-08
1.303511.6066757.179379e-08
1.310221.6065917.458509e-08
1.316961.6065067.739075e-08
1.323731.6064218.021083e-08
1.330541.6063358.304542e-08
1.337381.6062498.589458e-08
1.344261.6061638.875840e-08
1.351171.6060779.163694e-08
1.358121.605999.453029e-08
1.36511.6059039.743851e-08
1.372121.6058151.003617e-07
1.379181.6057271.032999e-07
1.386271.6056391.062532e-07
1.39341.6055511.092217e-07
1.41.6054691.119700e-07
1.400571.6054621.119063e-07
1.407771.6053721.110949e-07
1.415011.6052831.102794e-07
1.422281.6051931.094596e-07
1.42961.6051021.086357e-07
1.436951.6050111.078075e-07
1.444341.604921.069750e-07
1.451771.6048281.061383e-07
1.459231.6047351.052973e-07
1.466741.6046421.044519e-07
1.474281.6045491.036022e-07
1.481861.6044551.027481e-07
1.489481.6043611.018897e-07
1.497141.6042661.010268e-07
1.504841.604171.001594e-07
1.512581.6040749.928766e-08
1.520361.6039789.841140e-08
1.528181.6038819.753063e-08
1.536041.6037839.664533e-08
1.543941.6036859.575547e-08
1.551881.6035869.486104e-08
1.559861.6034869.396201e-08
1.567881.6033869.305836e-08
1.575941.6032859.215006e-08
1.584051.6031849.123709e-08
1.592191.6030829.031942e-08
1.61.6029848.944000e-08
1.600381.6029798.968226e-08
1.608611.6028769.491048e-08
1.616881.6027721.001656e-07
1.62521.6026671.054477e-07
1.633561.6025611.107570e-07
1.641961.6024551.160936e-07
1.65041.6023481.214576e-07
1.658891.602241.268493e-07
1.667421.6021311.322686e-07
1.6761.6020221.377158e-07
1.684611.6019121.431911e-07
1.693281.6018011.486945e-07
1.701991.6016891.542262e-07
1.710741.6015761.597863e-07
1.719541.6014631.653750e-07
1.728381.6013481.709925e-07
1.737271.6012331.766389e-07
1.74621.6011171.823143e-07
1.755181.6011.880189e-07
1.764211.6008821.937528e-07
1.773281.6007631.995162e-07
1.78241.6006432.053093e-07
1.791571.6005222.111321e-07
1.81.6004112.164900e-07
1.800781.60042.174711e-07
1.810041.6002782.291341e-07
1.819351.6001542.408571e-07
1.82871.6000292.526403e-07
1.838111.5999032.644841e-07
1.847561.5997762.763889e-07
1.857061.5996482.883549e-07
1.866611.5995193.003824e-07
1.876211.5993893.124717e-07
1.885861.5992573.246233e-07
1.895561.5991253.368373e-07
1.905311.5989913.491141e-07
1.915111.5988563.614541e-07
1.924951.598723.738575e-07
1.934851.5985833.863247e-07
1.94481.5984453.988561e-07
1.954811.5983054.114519e-07
1.964861.5981644.241124e-07
1.974961.5980224.368381e-07
1.985121.5978784.496292e-07
1.995331.5977334.624860e-07
21.5976674.683700e-07
2.005591.5975874.998129e-07
2.01591.597445.578359e-07
2.026271.5972916.161573e-07
2.036691.597146.747786e-07
2.047161.5969897.337013e-07
2.057691.5968367.929271e-07
2.068271.5966818.524575e-07
2.078911.5965259.122940e-07
2.08961.5963689.724382e-07
2.100351.5962091.032892e-06
2.111151.5960481.093656e-06
2.122011.5958861.154733e-06
2.132921.5957221.216124e-06
2.143891.5955571.277831e-06
2.154911.595391.339855e-06
2.165991.5952221.402198e-06
2.177131.5950511.464861e-06
2.188331.5948791.527847e-06
2.199581.5947061.591157e-06
2.21.5946991.593500e-06
2.21091.5945311.713162e-06
2.222261.5943541.838036e-06
2.233691.5941751.963553e-06
2.245181.5939942.089716e-06
2.256731.5938122.216527e-06
2.268331.5936272.343990e-06
2.281.5934412.472109e-06
2.291721.5932532.600887e-06
2.303511.5930632.730327e-06
2.315351.5928712.860432e-06
2.327261.5926772.991207e-06
2.339231.5924813.122654e-06
2.351261.5922833.254778e-06
2.363351.5920833.387580e-06
2.37551.5918813.521066e-06
2.387721.5916773.655238e-06
2.41.591473.790100e-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
—