Optical constants

Refractive index of S-BSM14 (OHARA)

S-BSM14: 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
1.60311
Extinction coefficient k
9.36134e-09
Permittivity ε1
2.56996
Permittivity ε2
3.00145e-08
Absorption coefficient α
0.00200201 cm⁻¹
Penetration depth δ = λ/(2πk)
9.98996e+09 nm
Abbe number Vd
60.641
Chromatic dispersion dn/dλ
-0.051424 µm⁻¹
Group index ng
1.63333
Group velocity dispersion
89.2819 fs²/mm
Dispersion parameter D
-487.08 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-BSM14 (OHARA): S-BSM14
ohara_s_bsm14 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-BSM14", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_bsm14.range_nm)  # (310, 2400) nm
eps = ohara_s_bsm14.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=1.2828627λ2λ2−0.0122902399+0.247647429λ2λ2+0.00613142361+1.10383999λ2λ2−106.883378

Valid from 0.31 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.2828627
C30.0122902399
C40.247647429
C5-0.00613142361
C61.10383999
C7106.883378

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 2.13e-06 1.22e-08 -3.98e-11 3.47e-07 7.94e-10 0.23
nd
1.603112
Vd
60.641080
glass code
603607
density
value: 3430
thermal expansion
value: 6.2e-06, temperature range: 243 343; value: 7.3e-06, temperature range: 293 573
dPgF
-0.0019
resistance
acid: 51.2; climatic: 3.0; phosphate: 2.2

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 1.53e-06 K⁻¹ at 633 nm, dn/dT = 1.12e-06 K⁻¹ at 1310 nm, dn/dT = 1.09e-06 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-BSM14 (OHARA), S-BSM14: n and k versus wavelength
λ (µm)nk
0.311.6440164.371200e-06
0.3115941.6433883.998504e-06
0.3131971.6427673.623892e-06
0.3148071.6421553.247353e-06
0.3164261.641552.868878e-06
0.3180531.6409542.488456e-06
0.3196891.6403652.106078e-06
0.321.6402542.033400e-06
0.3213331.6397831.897338e-06
0.3229861.6392091.728684e-06
0.3246471.6386421.559162e-06
0.3263161.6380831.388769e-06
0.3279941.637531.217500e-06
0.3296811.6369841.045350e-06
0.331.6368821.012800e-06
0.3313761.6364469.472980e-07
0.3330811.6359148.662044e-07
0.3347941.6353887.846938e-07
0.3365151.634877.027641e-07
0.3382461.6343576.204130e-07
0.3399851.6338525.376384e-07
0.341.6338475.369400e-07
0.3417341.6333524.915159e-07
0.3434911.6328584.454718e-07
0.3452581.6323713.991908e-07
0.3470331.631893.526719e-07
0.3488181.6314143.059137e-07
0.351.6311042.749400e-07
0.3506121.6309452.674805e-07
0.3524151.6304812.454903e-07
0.3542271.6300232.233870e-07
0.3560491.629572.011700e-07
0.357881.6291231.788388e-07
0.359721.6286811.563928e-07
0.361.6286151.529800e-07
0.361571.6282451.439960e-07
0.363431.6278131.333564e-07
0.3652981.6273881.226621e-07
0.3671771.6269671.119127e-07
0.3690651.6265511.011081e-07
0.371.6263489.576000e-08
0.3709631.626149.242041e-08
0.3728711.6257348.580670e-08
0.3747891.6253337.915898e-08
0.3767161.6249377.247707e-08
0.3786531.6245456.576080e-08
0.381.6242776.109200e-08
0.3806011.6241585.986194e-08
0.3825581.6237765.585302e-08
0.3845251.6233985.182349e-08
0.3865031.6230244.777323e-08
0.388491.6226554.370215e-08
0.391.6223794.061000e-08
0.3904881.622294.003239e-08
0.3924961.621933.765637e-08
0.3945151.6215733.526812e-08
0.3965441.6212213.286759e-08
0.3985831.6208733.045472e-08
0.41.6206352.877800e-08
0.4006331.6205292.850393e-08
0.4026931.6201892.761141e-08
0.4047641.6198532.671429e-08
0.4068451.619522.581257e-08
0.4089381.6191922.490620e-08
0.4110411.6188672.399517e-08
0.4131551.6185462.307946e-08
0.4152791.6182282.215904e-08
0.4174151.6179152.123389e-08
0.4195611.6176042.030398e-08
0.421.6175422.011400e-08
0.4217191.6172982.019635e-08
0.4238881.6169942.030023e-08
0.4260681.6166942.040465e-08
0.4282591.6163982.050960e-08
0.4304611.6161052.061509e-08
0.4326751.6158152.072113e-08
0.43491.6155282.082771e-08
0.4371371.6152452.093484e-08
0.4393851.6149642.104252e-08
0.441.6148882.107200e-08
0.4416441.6146872.084814e-08
0.4439151.6144132.053892e-08
0.4461981.6141422.022810e-08
0.4484931.6138741.991569e-08
0.4507991.6136091.960167e-08
0.4531181.6133461.928603e-08
0.4554481.6130871.896877e-08
0.457791.612831.864988e-08
0.461.6125921.834900e-08
0.4601441.6125771.832707e-08
0.4625111.6123261.796750e-08
0.4648891.6120771.760609e-08
0.467281.6118321.724281e-08
0.4696831.6115891.687767e-08
0.4720981.6113481.651065e-08
0.4745261.6111111.614174e-08
0.4769671.6108751.577093e-08
0.4794191.6106431.539822e-08
0.481.6105881.531000e-08
0.4818851.6104121.499381e-08
0.4843631.6101851.457810e-08
0.4868541.6099591.416025e-08
0.4893581.6097361.374025e-08
0.4918741.6095161.331810e-08
0.4944041.6092971.289377e-08
0.4969461.6090811.246726e-08
0.4995021.6088671.203855e-08
0.51.6088261.195500e-08
0.5020711.6086561.182278e-08
0.5046531.6084461.165791e-08
0.5072481.6082391.149219e-08
0.5098561.6080341.132563e-08
0.5124781.6078311.115820e-08
0.5151141.607631.098991e-08
0.5177631.6074321.082076e-08
0.5204261.6072351.065074e-08
0.5231021.607041.047984e-08
0.5257921.6068471.030807e-08
0.5284961.6066571.013541e-08
0.5312141.6064689.961865e-09
0.5339461.6062819.787426e-09
0.5366921.6060969.612090e-09
0.5394521.6059139.435853e-09
0.5422261.6057319.258709e-09
0.5450141.6055529.080654e-09
0.5478171.6053748.901683e-09
0.551.6052378.762300e-09
0.5506341.6051988.772407e-09
0.5534661.6050238.817522e-09
0.5563121.6048518.862868e-09
0.5591731.604688.908448e-09
0.5620491.604518.954263e-09
0.5649391.6043439.000313e-09
0.5678451.6041779.046600e-09
0.5707651.6040129.093125e-09
0.57371.603859.139889e-09
0.576651.6036889.186893e-09
0.5796161.6035299.234140e-09
0.5825971.603379.281629e-09
0.5855931.6032149.329363e-09
0.5886041.6030589.377342e-09
0.5916311.6029059.425567e-09
0.5946741.6027529.474041e-09
0.5977321.6026019.522764e-09
0.61.6024919.558900e-09
0.6008061.6024529.571730e-09
0.6038961.6023049.620924e-09
0.6070011.6021579.670372e-09
0.6101231.6020119.720074e-09
0.613261.6018679.770031e-09
0.6164141.6017249.820245e-09
0.6195841.6015839.870718e-09
0.622771.6014439.921450e-09
0.6259731.6013049.972443e-09
0.6291921.6011661.002370e-08
0.6324281.6010291.007522e-08
0.635681.6008941.012700e-08
0.6389491.600761.017905e-08
0.6422351.6006271.023137e-08
0.6455381.6004951.028396e-08
0.6488581.6003641.033681e-08
0.651.600321.035500e-08
0.6521951.6002341.038998e-08
0.6555491.6001061.044344e-08
0.658921.5999791.049718e-08
0.6623081.5998521.055120e-08
0.6657141.5997271.060549e-08
0.6691381.5996031.066006e-08
0.6725791.5994791.071491e-08
0.6760381.5993571.077004e-08
0.6795151.5992361.082546e-08
0.6830091.5991161.088116e-08
0.6865211.5989961.093715e-08
0.6900521.5988781.099343e-08
0.6936011.5987611.104999e-08
0.6971681.5986441.110685e-08
0.71.5985531.115200e-08
0.7007531.5985281.111599e-08
0.7043571.5984141.094364e-08
0.7079791.59831.077040e-08
0.711621.5981871.059628e-08
0.7152791.5980751.042125e-08
0.7189581.5979641.024533e-08
0.7226551.5978531.006850e-08
0.7263711.5977449.890760e-09
0.7301071.5976359.712108e-09
0.7338621.5975279.532537e-09
0.7376361.597429.352043e-09
0.7414291.5973139.170621e-09
0.7452421.5972078.988265e-09
0.7490741.5971028.804972e-09
0.7529271.5969988.620736e-09
0.7567991.5968958.435552e-09
0.760691.5967928.249417e-09
0.7646021.5966898.062324e-09
0.7685351.5965887.874269e-09
0.7724871.5964877.685246e-09
0.7764591.5963877.495252e-09
0.7804521.5962877.304281e-09
0.7844661.5961887.112327e-09
0.78851.596096.919387e-09
0.7925551.5959926.725454e-09
0.7966311.5958956.530524e-09
0.81.5958166.369400e-09
0.8007281.5957996.427397e-09
0.8048461.5957036.755532e-09
0.8089851.5956087.085354e-09
0.8131451.5955137.416873e-09
0.8173271.5954187.750096e-09
0.821531.5953258.085033e-09
0.8257551.5952318.421692e-09
0.8300011.5951398.760083e-09
0.834271.5950469.100214e-09
0.838561.5949559.442094e-09
0.8428721.5948639.785733e-09
0.8472071.5947721.013114e-08
0.8515641.5946821.047832e-08
0.8559431.5945921.082729e-08
0.8603451.5945031.117805e-08
0.8647691.5944131.153061e-08
0.8692171.5943251.188499e-08
0.8736871.5942361.224119e-08
0.878181.5941491.259923e-08
0.8826961.5940611.295910e-08
0.8872351.5939741.332083e-08
0.8917981.5938871.368441e-08
0.8963841.5938011.404987e-08
0.91.5937331.433800e-08
0.9009941.5937151.435383e-08
0.9056271.5936291.442764e-08
0.9102851.5935431.450184e-08
0.9149661.5934581.457641e-08
0.9196711.5933741.465136e-08
0.9244011.5932891.472671e-08
0.9291551.5932051.480243e-08
0.9339331.5931211.487855e-08
0.9387361.5930371.495506e-08
0.9435631.5929541.503197e-08
0.9484161.592871.510926e-08
0.9532931.5927881.518696e-08
0.9581961.5927051.526506e-08
0.9631231.5926221.534355e-08
0.9680761.592541.542245e-08
0.9730551.5924581.550176e-08
0.9780591.5923761.558148e-08
0.9830891.5922941.566160e-08
0.9881441.5922131.574214e-08
0.9932261.5921311.582309e-08
0.9983341.592051.590446e-08
11.5920231.593100e-08
1.003471.5919691.598626e-08
1.008631.5918881.606849e-08
1.013821.5918071.615115e-08
1.019031.5917261.623423e-08
1.024271.5916461.631773e-08
1.029541.5915651.640167e-08
1.034831.5914851.648604e-08
1.040151.5914041.657084e-08
1.04551.5913241.665608e-08
1.050881.5912441.674175e-08
1.056281.5911631.682787e-08
1.061721.5910831.691443e-08
1.067181.5910031.700144e-08
1.072661.5909231.708889e-08
1.078181.5908431.717679e-08
1.083721.5907631.726515e-08
1.08931.5906831.735396e-08
1.09491.5906031.744322e-08
1.100531.5905231.753295e-08
1.106191.5904431.762313e-08
1.111881.5903621.771378e-08
1.11761.5902821.780490e-08
1.123341.5902021.789648e-08
1.129121.5901221.798854e-08
1.134931.5900411.808107e-08
1.140761.5899611.817407e-08
1.146631.589881.826755e-08
1.152531.5897991.836152e-08
1.158451.5897191.845597e-08
1.164411.5896381.855090e-08
1.17041.5895571.864632e-08
1.176421.5894751.874223e-08
1.182471.5893941.883864e-08
1.188551.5893131.893554e-08
1.194661.5892311.903294e-08
1.21.589161.911800e-08
1.200811.5891491.949197e-08
1.206981.5890672.235891e-08
1.213191.5889852.524060e-08
1.219431.5889022.813711e-08
1.22571.588823.104851e-08
1.2321.5887373.397489e-08
1.238341.5886543.691631e-08
1.244711.5885713.987286e-08
1.251111.5884874.284462e-08
1.257541.5884034.583166e-08
1.264011.5883194.883406e-08
1.270511.5882355.185190e-08
1.277041.588155.488526e-08
1.283611.5880655.793422e-08
1.290211.587986.099886e-08
1.296841.5878946.407926e-08
1.303511.5878086.717550e-08
1.310221.5877227.028766e-08
1.316961.5876357.341583e-08
1.323731.5875487.656008e-08
1.330541.5874617.972051e-08
1.337381.5873738.289719e-08
1.344261.5872858.609020e-08
1.351171.5871978.929964e-08
1.358121.5871089.252558e-08
1.36511.5870199.576810e-08
1.372121.5869299.902731e-08
1.379181.5868391.023033e-07
1.386271.5867481.055961e-07
1.39341.5866571.089058e-07
1.41.5865731.119700e-07
1.400571.5865651.118338e-07
1.407771.5864731.100999e-07
1.415011.5863811.083570e-07
1.422281.5862881.066052e-07
1.42961.5861941.048443e-07
1.436951.58611.030744e-07
1.444341.5860061.012954e-07
1.451771.585919.950729e-08
1.459231.5858159.770995e-08
1.466741.5857189.590336e-08
1.474281.5856229.408749e-08
1.481861.5855249.226227e-08
1.489481.5854269.042767e-08
1.497141.5853278.858363e-08
1.504841.5852288.673012e-08
1.512581.5851288.486706e-08
1.520361.5850288.299443e-08
1.528181.5849268.111217e-08
1.536041.5848257.922023e-08
1.543941.5847227.731856e-08
1.551881.5846197.540710e-08
1.559861.5845157.348582e-08
1.567881.584417.155466e-08
1.575941.5843046.961357e-08
1.584051.5841986.766249e-08
1.592191.5840916.570138e-08
1.61.5839896.382200e-08
1.600381.5839846.403005e-08
1.608611.5838756.851994e-08
1.616881.5837667.303292e-08
1.62521.5836567.756910e-08
1.633561.5835458.212862e-08
1.641961.5834338.671158e-08
1.65041.583329.131811e-08
1.658891.5832079.594833e-08
1.667421.5830921.006024e-07
1.6761.5829771.052803e-07
1.684611.5828611.099823e-07
1.693281.5827441.147086e-07
1.701991.5826251.194591e-07
1.710741.5825061.242340e-07
1.719541.5823861.290335e-07
1.728381.5822661.338577e-07
1.737271.5821441.387067e-07
1.74621.5820211.435806e-07
1.755181.5818971.484796e-07
1.764211.5817721.534037e-07
1.773281.5816451.583532e-07
1.78241.5815181.633282e-07
1.791571.581391.683287e-07
1.81.5812721.729300e-07
1.800781.5812611.737624e-07
1.810041.581131.836575e-07
1.819351.5809991.936035e-07
1.82871.5808662.036006e-07
1.838111.5807322.136492e-07
1.847561.5805972.237494e-07
1.857061.580462.339016e-07
1.866611.5803232.441060e-07
1.876211.5801842.543628e-07
1.885861.5800442.646724e-07
1.895561.5799032.750350e-07
1.905311.579762.854509e-07
1.915111.5796162.959204e-07
1.924951.5794713.064437e-07
1.934851.5793243.170212e-07
1.94481.5791763.276530e-07
1.954811.5790273.383395e-07
1.964861.5788763.490810e-07
1.974961.5787243.598777e-07
1.985121.578573.707299e-07
1.995331.5784153.816379e-07
21.5783443.866300e-07
2.005591.5782584.171518e-07
2.01591.57814.734750e-07
2.026271.577945.300879e-07
2.036691.5777795.869920e-07
2.047161.5776166.441886e-07
2.057691.5774527.016794e-07
2.068271.5772867.594659e-07
2.078911.5771198.175495e-07
2.08961.5769498.759318e-07
2.100351.5767789.346144e-07
2.111151.5766069.935988e-07
2.122011.5764311.052886e-06
2.132921.5762551.112479e-06
2.143891.5760771.172378e-06
2.154911.5758971.232585e-06
2.165991.5757161.293102e-06
2.177131.5755321.353930e-06
2.188331.5753471.415071e-06
2.199581.575161.476526e-06
2.21.5751531.478800e-06
2.21091.5749711.617479e-06
2.222261.574781.762200e-06
2.233691.5745871.907665e-06
2.245181.5743922.053878e-06
2.256731.5741942.200843e-06
2.268331.5739952.348564e-06
2.281.5737942.497044e-06
2.291721.5735912.646288e-06
2.303511.5733852.796300e-06
2.315351.5731772.947083e-06
2.327261.5729673.098641e-06
2.339231.5727553.250979e-06
2.351261.5725413.404100e-06
2.363351.5723243.558009e-06
2.37551.5721053.712709e-06
2.387721.5718843.868205e-06
2.41.571664.024500e-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
—