Optical constants

Refractive index of S-BSM36 (OHARA)

S-BSM36: n,k 0.3–0.7 µm

Data
formula 3 + tabulated k
Range
0.3–0.7 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.3–0.7 µm
Refractive index n
1.64249
Extinction coefficient k
9.36134e-09
Permittivity ε1
2.69778
Permittivity ε2
3.07519e-08
Absorption coefficient α
0.00200201 cm⁻¹
Penetration depth δ = λ/(2πk)
9.98996e+09 nm
Abbe number Vd
58.369
Chromatic dispersion dn/dλ
-0.0569107 µm⁻¹
Group index ng
1.67593
Group velocity dispersion
98.9115 fs²/mm
Dispersion parameter D
-539.615 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-BSM36 (OHARA): S-BSM36
ohara_s_bsm36 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-BSM36", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_bsm36.range_nm)  # (300, 700) nm
eps = ohara_s_bsm36.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

Polynomial (formula 3), λ in µm
n2=2.6546711−0.012819365⁢λ2.0+0.015197193⁢λ−2.0+0.00050420821⁢λ−4.0−3.4995634×10-5⁢λ−6.0+2.0492682×10-6⁢λ−8.0

Valid from 0.3 to 0.7 µm.

Coefficients as stored
CiValue
C12.6546711
C2-0.012819365
C32.0
C40.015197193
C5-2.0
C60.00050420821
C7-4.0
C8-3.4995634e-05
C9-6.0
C102.0492682e-06
C11-8.0

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -7.36e-07 1.43e-08 -2.88e-12 5.38e-07 1.11e-09 0.119
nd
1.642495
Vd
58.369399
glass code
643584
glass status
special
density
value: 3640
thermal expansion
value: 6.4e-06, temperature range: 243 343; value: 7.8e-06, temperature range: 293 573
dPgF
-0.0055
resistance
acid: 53.2; climatic: 3.0; phosphate: 4.2

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 3.38e-07 K⁻¹ at 633 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 418 wavelengths, the same grid as the API and the library
S-BSM36 (OHARA), S-BSM36: n and k versus wavelength
λ (µm)nk
0.31.6934736.029700e-06
0.3006381.6931295.906437e-06
0.3012771.6927885.782912e-06
0.3019171.6924485.659124e-06
0.3025591.6921125.535074e-06
0.3032021.6917775.410759e-06
0.3038471.6914455.286181e-06
0.3044931.6911165.161337e-06
0.305141.6907885.036228e-06
0.3057891.6904634.910853e-06
0.3064391.690144.785212e-06
0.307091.689824.659303e-06
0.3077431.6895014.533127e-06
0.3083971.6891854.406683e-06
0.3090531.6888714.279970e-06
0.309711.6885594.152987e-06
0.311.6884234.096900e-06
0.3103681.688254.047204e-06
0.3110281.6879423.958153e-06
0.3116891.6876363.868913e-06
0.3123521.6873333.779483e-06
0.3130161.6870313.689863e-06
0.3136811.6867323.600052e-06
0.3143481.6864343.510050e-06
0.3150161.6861393.419858e-06
0.3156861.6858453.329473e-06
0.3163571.6855533.238896e-06
0.317031.6852643.148127e-06
0.3177031.6849763.057165e-06
0.3183791.684692.966009e-06
0.3190561.6844052.874659e-06
0.3197341.6841232.783116e-06
0.321.6840132.747200e-06
0.3204141.6838422.706709e-06
0.3210951.6835642.640026e-06
0.3217771.6832872.573201e-06
0.3224611.6830112.506233e-06
0.3231471.6827382.439124e-06
0.3238341.6824662.371872e-06
0.3245221.6821962.304476e-06
0.3252121.6819272.236938e-06
0.3259031.681662.169256e-06
0.3265961.6813952.101430e-06
0.3272911.6811322.033460e-06
0.3279861.680871.965345e-06
0.3286831.680611.897086e-06
0.3293821.6803511.828681e-06
0.331.6801241.768200e-06
0.3300821.6800941.762557e-06
0.3307841.6798381.714512e-06
0.3314871.6795841.666365e-06
0.3321921.6793321.618115e-06
0.3328981.6790811.569763e-06
0.3336061.6788311.521309e-06
0.3343151.6785831.472751e-06
0.3350261.6783371.424090e-06
0.3357381.6780911.375326e-06
0.3364521.6778481.326458e-06
0.3371671.6776061.277486e-06
0.3378841.6773651.228410e-06
0.3386021.6771251.179229e-06
0.3393221.6768871.129944e-06
0.341.6766651.083500e-06
0.3400431.6766511.081663e-06
0.3407661.6764161.050800e-06
0.341491.6761821.019871e-06
0.3422161.6759499.888758e-07
0.3429441.6757189.578150e-07
0.3436731.6754889.266882e-07
0.3444031.6752598.954952e-07
0.3451351.6750328.642360e-07
0.3458691.6748068.329102e-07
0.3466041.6745818.015179e-07
0.3473411.6743587.700588e-07
0.348081.6741367.385329e-07
0.348821.6739157.069400e-07
0.3495611.6736956.752798e-07
0.351.6735666.565400e-07
0.3503041.6734766.477088e-07
0.3510491.6732596.260893e-07
0.3517951.6730436.044238e-07
0.3525431.6728285.827122e-07
0.3532921.6726145.609545e-07
0.3540431.6724025.391505e-07
0.3547961.6721915.173002e-07
0.355551.671984.954034e-07
0.3563061.6717714.734601e-07
0.3570641.6715634.514701e-07
0.3578231.6713574.294334e-07
0.3585831.6711514.073498e-07
0.3593461.6709463.852193e-07
0.361.6707723.662200e-07
0.3601091.6707433.645154e-07
0.3608751.670543.525954e-07
0.3616421.6703393.406501e-07
0.3624111.6701393.286794e-07
0.3631811.669943.166832e-07
0.3639531.6697423.046616e-07
0.3647271.6695452.926143e-07
0.3655021.6693492.805415e-07
0.3662791.6691542.684430e-07
0.3670581.668962.563188e-07
0.3678381.6687672.441688e-07
0.368621.6685752.319930e-07
0.3694041.6683842.197913e-07
0.371.668242.105100e-07
0.3701891.6681942.089223e-07
0.3709761.6680052.023190e-07
0.3717651.6678171.957016e-07
0.3725551.667631.890702e-07
0.3733471.6674441.824247e-07
0.3741411.6672591.757650e-07
0.3749361.6670751.690912e-07
0.3757331.6668921.624032e-07
0.3765321.666711.557010e-07
0.3773321.6665281.489846e-07
0.3781341.6663481.422539e-07
0.3789381.6661691.355088e-07
0.3797441.665991.287494e-07
0.381.6659341.266000e-07
0.3805511.6658131.243045e-07
0.381361.6656361.209349e-07
0.3821711.665461.175580e-07
0.3829831.6652851.141741e-07
0.3837971.6651111.107829e-07
0.3846131.6649381.073845e-07
0.3854311.6647661.039789e-07
0.386251.6645951.005660e-07
0.3870711.6644249.714594e-08
0.3878941.6642549.371856e-08
0.3887191.6640859.028390e-08
0.3895451.6639178.684194e-08
0.391.6638258.494700e-08
0.3903731.663758.393464e-08
0.3912031.6635848.168332e-08
0.3920351.6634187.942721e-08
0.3928681.6632547.716630e-08
0.3937031.663097.490059e-08
0.394541.6629277.263006e-08
0.3953791.6627657.035470e-08
0.3962191.6626036.807451e-08
0.3970621.6624436.578947e-08
0.3979061.6622836.349957e-08
0.3987521.6621246.120480e-08
0.3995991.6619655.890516e-08
0.41.6618915.781800e-08
0.4004491.6618085.727443e-08
0.40131.6616515.624323e-08
0.4021531.6614955.520984e-08
0.4030081.661345.417426e-08
0.4038651.6611855.313647e-08
0.4047231.6610325.209648e-08
0.4055841.6608795.105428e-08
0.4064461.6607265.000986e-08
0.407311.6605754.896322e-08
0.4081761.6604244.791436e-08
0.4090431.6602744.686326e-08
0.4099131.6601254.580994e-08
0.4107841.6599764.475437e-08
0.4116581.6598284.369656e-08
0.4125331.6596814.263650e-08
0.413411.6595344.157419e-08
0.4142891.6593894.050962e-08
0.4151691.6592433.944278e-08
0.4160521.6590993.837368e-08
0.4169361.6589553.730230e-08
0.4178231.6588123.622865e-08
0.4187111.658673.515272e-08
0.4196011.6585283.407449e-08
0.421.6584653.359100e-08
0.4204931.6583873.345628e-08
0.4213871.6582473.321193e-08
0.4222831.6581073.296707e-08
0.423181.6579683.272169e-08
0.424081.657833.247578e-08
0.4249811.6576923.222935e-08
0.4258851.6575553.198240e-08
0.426791.6574193.173492e-08
0.4276971.6572833.148692e-08
0.4286071.6571483.123839e-08
0.4295181.6570133.098933e-08
0.4304311.6568793.073974e-08
0.4313461.6567463.048962e-08
0.4322631.6566133.023897e-08
0.4331821.6564812.998779e-08
0.4341031.656352.973607e-08
0.4350251.6562192.948382e-08
0.435951.6560892.923103e-08
0.4368771.6559592.897770e-08
0.4378061.655832.872384e-08
0.4387361.6557022.846943e-08
0.4396691.6555742.821449e-08
0.441.6555292.812400e-08
0.4406041.6554472.794008e-08
0.441541.655322.765468e-08
0.4424791.6551942.736868e-08
0.443421.6550692.708207e-08
0.4443621.6549442.679485e-08
0.4453071.6548192.650702e-08
0.4462531.6546962.621858e-08
0.4472021.6545722.592953e-08
0.4481531.654452.563986e-08
0.4491051.6543282.534958e-08
0.450061.6542062.505868e-08
0.4510171.6540852.476716e-08
0.4519761.6539652.447502e-08
0.4529361.6538452.418226e-08
0.4538991.6537262.388888e-08
0.4548641.6536072.359487e-08
0.4558311.6534892.330024e-08
0.45681.6533712.300498e-08
0.4577711.6532542.270910e-08
0.4587441.6531372.241258e-08
0.459721.6530212.211544e-08
0.461.6529882.203000e-08
0.4606971.6529052.179585e-08
0.4616761.652792.146679e-08
0.4626581.6526762.113702e-08
0.4636411.6525622.080656e-08
0.4646271.6524482.047540e-08
0.4656151.6523352.014353e-08
0.4666041.6522231.981095e-08
0.4675961.6521111.947767e-08
0.468591.6519991.914368e-08
0.4695861.6518881.880898e-08
0.4705851.6517781.847356e-08
0.4715851.6516681.813744e-08
0.4725881.6515581.780060e-08
0.4735921.6514491.746304e-08
0.4745991.651341.712477e-08
0.4756081.6512321.678577e-08
0.4766191.6511251.644606e-08
0.4776321.6510181.610563e-08
0.4786471.6509111.576447e-08
0.4796651.6508051.542258e-08
0.481.650771.531000e-08
0.4806851.6506991.519516e-08
0.4817061.6505941.502374e-08
0.482731.6504891.485196e-08
0.4837571.6503851.467982e-08
0.4847851.6502811.450731e-08
0.4858161.6501781.433443e-08
0.4868481.6500751.416119e-08
0.4878831.6499721.398758e-08
0.488921.649871.381360e-08
0.489961.6497681.363924e-08
0.4910011.6496671.346452e-08
0.4920451.6495671.328943e-08
0.4930911.6494661.311396e-08
0.4941391.6493661.293812e-08
0.495191.6492671.276191e-08
0.4962421.6491681.258533e-08
0.4972971.649071.240836e-08
0.4983551.6489711.223102e-08
0.4994141.6488741.205331e-08
0.51.648821.195500e-08
0.5004761.6487761.192463e-08
0.501541.648681.185669e-08
0.5026061.6485831.178862e-08
0.5036741.6484871.172039e-08
0.5047451.6483921.165202e-08
0.5058181.6482961.158351e-08
0.5068931.6482021.151485e-08
0.5079711.6481071.144604e-08
0.5090511.6480131.137709e-08
0.5101331.647921.130799e-08
0.5112171.6478271.123874e-08
0.5123041.6477341.116935e-08
0.5133931.6476411.109981e-08
0.5144841.6475491.103012e-08
0.5155781.6474581.096028e-08
0.5166741.6473671.089030e-08
0.5177721.6472761.082016e-08
0.5188731.6471851.074988e-08
0.5199761.6470951.067945e-08
0.5210811.6470061.060886e-08
0.5221891.6469161.053813e-08
0.5232991.6468271.046725e-08
0.5244121.6467391.039622e-08
0.5255261.6466511.032503e-08
0.5266441.6465631.025370e-08
0.5277631.6464761.018221e-08
0.5288851.6463891.011057e-08
0.5300091.6463021.003878e-08
0.5311361.6462169.966833e-09
0.5322651.646139.894736e-09
0.5333971.6460449.822485e-09
0.5345311.6459599.750081e-09
0.5356671.6458749.677523e-09
0.5368061.6457899.604811e-09
0.5379471.6457059.531944e-09
0.539091.6456219.458922e-09
0.5402361.6455389.385746e-09
0.5413851.6454559.312413e-09
0.5425361.6453729.238925e-09
0.5436891.6452899.165280e-09
0.5448451.6452079.091479e-09
0.5460031.6451269.017521e-09
0.5471641.6450448.943406e-09
0.5483271.6449638.869133e-09
0.5494931.6448828.794702e-09
0.551.6448478.762300e-09
0.5506611.6448028.772826e-09
0.5518311.6447228.791476e-09
0.5530041.6446428.810166e-09
0.554181.6445628.828895e-09
0.5553581.6444838.847664e-09
0.5565391.6444058.866473e-09
0.5577221.6443268.885322e-09
0.5589071.6442488.904211e-09
0.5600951.644178.923141e-09
0.5612861.6440928.942110e-09
0.5624791.6440158.961120e-09
0.5636751.6439388.980170e-09
0.5648731.6438628.999261e-09
0.5660741.6437859.018392e-09
0.5672771.6437099.037565e-09
0.5684831.6436349.056777e-09
0.5696921.6435589.076031e-09
0.5709031.6434839.095325e-09
0.5721171.6434089.114661e-09
0.5733331.6433349.134038e-09
0.5745521.643269.153456e-09
0.5757731.6431869.172915e-09
0.5769971.6431129.192415e-09
0.5782241.6430399.211957e-09
0.5794531.6429669.231541e-09
0.5806851.6428939.251166e-09
0.5819191.6428219.270833e-09
0.5831561.6427499.290541e-09
0.5843961.6426779.310292e-09
0.5856381.6426059.330084e-09
0.5868831.6425349.349919e-09
0.5881311.6424639.369796e-09
0.5893811.6423929.389715e-09
0.5906341.6423229.409676e-09
0.5918891.6422519.429680e-09
0.5931481.6421819.449726e-09
0.5944081.6421129.469815e-09
0.5956721.6420429.489947e-09
0.5969381.6419739.510122e-09
0.5982071.6419049.530339e-09
0.5994791.6418369.550599e-09
0.61.6418089.558900e-09
0.6007531.6417679.492848e-09
0.602031.6416999.380878e-09
0.603311.6416329.268670e-09
0.6045931.6415649.156223e-09
0.6058781.6414979.043538e-09
0.6071661.641438.930613e-09
0.6084571.6413638.817448e-09
0.609751.6412968.704042e-09
0.6110461.641238.590395e-09
0.6123451.6411648.476507e-09
0.6136471.6410988.362376e-09
0.6149521.6410338.248003e-09
0.6162591.6409688.133387e-09
0.6175691.6409028.018527e-09
0.6188821.6408387.903423e-09
0.6201971.6407737.788074e-09
0.6215161.6407097.672480e-09
0.6228371.6406457.556641e-09
0.6241611.6405817.440555e-09
0.6254881.6405177.324222e-09
0.6268181.6404547.207642e-09
0.628151.6403917.090814e-09
0.6294851.6403286.973738e-09
0.6308241.6402656.856413e-09
0.6321651.6402036.738839e-09
0.6335081.6401416.621014e-09
0.6348551.6400796.502939e-09
0.6362051.6400176.384613e-09
0.6375571.6399556.266036e-09
0.6389131.6398946.147206e-09
0.6402711.6398336.028124e-09
0.6416321.6397725.908789e-09
0.6429961.6397115.789200e-09
0.6443631.6396515.669357e-09
0.6457321.6395915.549259e-09
0.6471051.6395315.428906e-09
0.6484811.6394715.308297e-09
0.6498591.6394115.187431e-09
0.651.6394055.175100e-09
0.6512411.6393525.184980e-09
0.6526251.6392935.196002e-09
0.6540131.6392345.207048e-09
0.6554031.6391755.218118e-09
0.6567961.6391175.229211e-09
0.6581921.6390585.240328e-09
0.6595921.6395.251468e-09
0.6609941.6389425.262632e-09
0.6623991.6388845.273820e-09
0.6638071.6388275.285032e-09
0.6652181.638775.296267e-09
0.6666321.6387125.307526e-09
0.6680491.6386555.318810e-09
0.669471.6385995.330117e-09
0.6708931.6385425.341448e-09
0.6723191.6384865.352803e-09
0.6737481.638435.364183e-09
0.675181.6383745.375586e-09
0.6766161.6383185.387014e-09
0.6780541.6382625.398466e-09
0.6794951.6382075.409943e-09
0.680941.6381525.421444e-09
0.6823881.6380975.432969e-09
0.6838381.6380425.444519e-09
0.6852921.6379875.456094e-09
0.6867491.6379335.467693e-09
0.6882091.6378785.479316e-09
0.6896721.6378245.490965e-09
0.6911381.637775.502638e-09
0.6926071.6377165.514336e-09
0.6940791.6376635.526059e-09
0.6955551.6376095.537807e-09
0.6970331.6375565.549579e-09
0.6985151.6375035.561377e-09
0.71.637455.573200e-09

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
—