Optical constants

Refractive index of S-BAM3 (OHARA)

S-BAM3: n,k 0.35–2.4 µm

Data
formula 2 + tabulated k
Range
0.35–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.35–2.4 µm
Refractive index n
1.58267
Extinction coefficient k
1.40486e-08
Permittivity ε1
2.50485
Permittivity ε2
4.44687e-08
Absorption coefficient α
0.00300443 cm⁻¹
Penetration depth δ = λ/(2πk)
6.65683e+09 nm
Abbe number Vd
46.423
Chromatic dispersion dn/dλ
-0.0641454 µm⁻¹
Group index ng
1.62036
Group velocity dispersion
119.186 fs²/mm
Dispersion parameter D
-650.22 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-BAM3 (OHARA): S-BAM3
ohara_s_bam3 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-BAM3", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_bam3.range_nm)  # (350, 2400) nm
eps = ohara_s_bam3.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=1.36955358λ2λ2−0.00941331434+0.0853825867λ2λ2−0.0504359027+1.16159771λ2λ2−130.548899

Valid from 0.35 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.36955358
C30.00941331434
C40.0853825867
C50.0504359027
C61.16159771
C7130.548899

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -2.69e-06 1.28e-08 -3.68e-11 6.28e-07 7.06e-10 0.238
nd
1.582673
Vd
46.423175
glass code
583464
glass status
special
density
value: 2750
thermal expansion
value: 8.5e-06, temperature range: 243 343; value: 1e-05, temperature range: 293 573
dPgF
0.0007
resistance
acid: 1.0; climatic: 2.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = -4.09e-07 K⁻¹ at 633 nm, dn/dT = -1.07e-06 K⁻¹ at 1310 nm, dn/dT = -1.12e-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 423 wavelengths, the same grid as the API and the library
S-BAM3 (OHARA), S-BAM3: n and k versus wavelength
λ (µm)nk
0.351.6209896.147700e-06
0.3516931.6203215.505097e-06
0.3533941.6196634.859385e-06
0.3551031.6190164.210550e-06
0.3568211.6183793.558577e-06
0.3585471.6177522.903450e-06
0.361.6172342.351900e-06
0.3602811.6171352.314118e-06
0.3620241.6165272.079991e-06
0.3637751.6159281.844732e-06
0.3655351.6153381.608335e-06
0.3673031.6147571.370794e-06
0.3690791.6141841.132105e-06
0.371.6138921.008400e-06
0.3708641.613629.637121e-07
0.3726581.6130648.709789e-07
0.3744611.6125167.777971e-07
0.3762721.6119766.841646e-07
0.3780921.6114435.900792e-07
0.3799211.6109184.955387e-07
0.381.6108964.914500e-07
0.3817591.6104014.505335e-07
0.3836051.6098914.075698e-07
0.3854611.6093873.643984e-07
0.3873251.6088913.210182e-07
0.3891991.6084022.774281e-07
0.391.6081952.587800e-07
0.3910811.6079192.470095e-07
0.3929731.6074432.264133e-07
0.3948731.6069732.057175e-07
0.3967831.606511.849216e-07
0.3987031.6060531.640251e-07
0.41.6057481.499000e-07
0.4006311.6056011.474079e-07
0.4025691.6051561.397568e-07
0.4045161.6047171.320688e-07
0.4064731.6042831.243435e-07
0.4084391.6038551.165809e-07
0.4104151.6034331.087808e-07
0.41241.6030161.009429e-07
0.4143941.6026049.306708e-08
0.4163991.6021988.515319e-08
0.4184131.6017977.720101e-08
0.421.6014857.093500e-08
0.4204371.6014017.046392e-08
0.422471.6010096.827075e-08
0.4245141.6006236.606698e-08
0.4265671.6002426.385254e-08
0.4286311.5998656.162739e-08
0.4307041.5994935.939147e-08
0.4327871.5991255.714475e-08
0.434881.5987625.488715e-08
0.4369841.5984045.261864e-08
0.4390981.598055.033915e-08
0.441.59794.936600e-08
0.4412221.59774.882382e-08
0.4433561.5973544.787657e-08
0.44551.5970134.692474e-08
0.4476551.5966754.596830e-08
0.449821.5963424.500724e-08
0.4519961.5960124.404153e-08
0.4541821.5956874.307115e-08
0.4563791.5953654.209608e-08
0.4585871.5950474.111628e-08
0.461.5948464.048900e-08
0.4608051.5947334.009429e-08
0.4630341.5944223.900124e-08
0.4652731.5941153.790290e-08
0.4675241.5938113.679925e-08
0.4697851.5935113.569027e-08
0.4720581.5932153.457592e-08
0.4743411.5929223.345618e-08
0.4766351.5926323.233102e-08
0.4789411.5923463.120042e-08
0.481.5922153.068100e-08
0.4812571.5920623.025750e-08
0.4835851.5917822.947349e-08
0.4859241.5915052.868569e-08
0.4882751.5912312.789408e-08
0.4906361.5909612.709863e-08
0.493011.5906932.629935e-08
0.4953941.5904282.549619e-08
0.4977911.5901662.468915e-08
0.51.5899282.394500e-08
0.5001981.5899072.390218e-08
0.5026181.5896512.337983e-08
0.5050491.5893982.285495e-08
0.5074921.5891472.232752e-08
0.5099461.5888992.179755e-08
0.5124131.5886542.126502e-08
0.5148921.5884112.072990e-08
0.5173821.5881712.019220e-08
0.5198851.5879341.965190e-08
0.5223991.5876991.910899e-08
0.5249261.5874671.856345e-08
0.5274651.5872371.801527e-08
0.5300161.5870091.746444e-08
0.532581.5867841.691094e-08
0.5351561.5865621.635477e-08
0.5377451.5863411.579591e-08
0.5403461.5861231.523434e-08
0.5429591.5859071.467006e-08
0.5455861.5856941.410305e-08
0.5482251.5854831.353330e-08
0.551.5853421.315000e-08
0.5508761.5852731.317095e-08
0.5535411.5850661.323463e-08
0.5562181.5848611.329862e-08
0.5589091.5846591.336292e-08
0.5616121.5844581.342753e-08
0.5643291.5842591.349246e-08
0.5670581.5840621.355769e-08
0.5698011.5838681.362325e-08
0.5725571.5836751.368912e-08
0.5753271.5834841.375531e-08
0.578111.5832951.382182e-08
0.5809061.5831081.388865e-08
0.5837161.5829221.395580e-08
0.5865391.5827391.402328e-08
0.5893761.5825571.409109e-08
0.5922271.5823771.415922e-08
0.5950911.5821991.422769e-08
0.597971.5820231.429648e-08
0.61.58191.434500e-08
0.6008621.5818481.445514e-08
0.6037691.5816751.482640e-08
0.6066891.5815041.519945e-08
0.6096231.5813341.557431e-08
0.6125721.5811661.595097e-08
0.6155351.5811.632947e-08
0.6185131.5808351.670979e-08
0.6215041.5806711.709195e-08
0.624511.5805091.747596e-08
0.6275311.5803491.786183e-08
0.6305661.580191.824956e-08
0.6336161.5800331.863917e-08
0.6366811.5798771.903066e-08
0.6397611.5797221.942405e-08
0.6428551.5795691.981934e-08
0.6459651.5794182.021655e-08
0.6490891.5792672.061567e-08
0.651.5792242.073200e-08
0.6522291.5791182.055386e-08
0.6553841.5789712.030173e-08
0.6585541.5788242.004838e-08
0.6617391.5786791.979381e-08
0.664941.5785361.953800e-08
0.6681561.5783931.928095e-08
0.6713881.5782521.902266e-08
0.6746361.5781121.876313e-08
0.6778991.5779731.850233e-08
0.6811781.5778361.824028e-08
0.6844731.5776991.797696e-08
0.6877831.5775641.771236e-08
0.691111.577431.744648e-08
0.6944531.5772971.717932e-08
0.6978121.5771651.691087e-08
0.71.577081.673600e-08
0.7011871.5770351.668862e-08
0.7045791.5769051.655326e-08
0.7079871.5767761.641724e-08
0.7114111.5766491.628057e-08
0.7148521.5765221.614324e-08
0.718311.5763971.600524e-08
0.7217851.5762731.586658e-08
0.7252761.5761491.572724e-08
0.7287841.5760271.558723e-08
0.7323091.5759051.544655e-08
0.7358511.5757851.530518e-08
0.739411.5756651.516313e-08
0.7429871.5755471.502039e-08
0.7465811.5754291.487696e-08
0.7501921.5753121.473284e-08
0.7538211.5751961.458802e-08
0.7574671.5750811.444250e-08
0.7611311.5749671.429628e-08
0.7648121.5748541.414935e-08
0.7685111.5747421.400171e-08
0.7722291.574631.385335e-08
0.7759641.5745191.370428e-08
0.7797171.5744091.355448e-08
0.7834891.57431.340397e-08
0.7872781.5741921.325272e-08
0.7910861.5740841.310074e-08
0.7949131.5739771.294803e-08
0.7987581.5738711.279457e-08
0.81.5738371.274500e-08
0.8026211.5737651.278676e-08
0.8065041.5736611.284860e-08
0.8104051.5735571.291075e-08
0.8143251.5734531.297319e-08
0.8182631.5733511.303594e-08
0.8222211.5732491.309898e-08
0.8261981.5731481.316234e-08
0.8301951.5730471.322600e-08
0.834211.5729471.328997e-08
0.8382451.5728481.335425e-08
0.84231.5727491.341884e-08
0.8463741.5726511.348374e-08
0.8504681.5725531.354895e-08
0.8545811.5724561.361448e-08
0.8587151.572361.368033e-08
0.8628691.5722641.374650e-08
0.8670421.5721691.381298e-08
0.8712361.5720741.387979e-08
0.875451.571981.394692e-08
0.8796851.5718871.401438e-08
0.883941.5717931.408216e-08
0.8882151.5717011.415027e-08
0.8925121.5716091.421871e-08
0.8968291.5715171.428748e-08
0.91.5714511.433800e-08
0.9011671.5714261.435658e-08
0.9055251.5713351.442602e-08
0.9099051.5712451.449579e-08
0.9143071.5711561.456590e-08
0.9187291.5710661.463635e-08
0.9231731.5709771.470714e-08
0.9276381.5708891.477828e-08
0.9321251.5708011.484975e-08
0.9366341.5707131.492158e-08
0.9411641.5706261.499375e-08
0.9457171.5705391.506627e-08
0.9502911.5704531.513914e-08
0.9548881.5703671.521236e-08
0.9595061.5702811.528593e-08
0.9641471.5701961.535987e-08
0.9688111.5701111.543416e-08
0.9734971.5700261.550881e-08
0.9782061.5699421.558382e-08
0.9829371.5698581.565919e-08
0.9876921.5697741.573493e-08
0.9924691.569691.581103e-08
0.997271.5696071.588751e-08
11.569561.593100e-08
1.002091.5695241.606456e-08
1.006941.5694421.637380e-08
1.011811.5693591.668454e-08
1.016711.5692771.699678e-08
1.021621.5691961.731053e-08
1.026561.5691141.762580e-08
1.031531.5690331.794260e-08
1.036521.5689511.826093e-08
1.041531.5688711.858079e-08
1.046571.568791.890221e-08
1.051631.5687091.922518e-08
1.056721.5686291.954971e-08
1.061831.5685491.987581e-08
1.066971.5684692.020349e-08
1.072131.5683892.053275e-08
1.077311.5683092.086361e-08
1.082521.568232.119606e-08
1.087761.5681512.153013e-08
1.093021.5680712.186581e-08
1.098311.5679922.220311e-08
1.103621.5679132.254205e-08
1.108961.5678352.288262e-08
1.114321.5677562.322484e-08
1.119711.5676772.356872e-08
1.125131.5675992.391426e-08
1.130571.567522.426147e-08
1.136041.5674422.461037e-08
1.141541.5673632.496095e-08
1.147061.5672852.531322e-08
1.152611.5672072.566720e-08
1.158181.5671282.602289e-08
1.163781.567052.638030e-08
1.169411.5669722.673944e-08
1.175071.5668942.710032e-08
1.180751.5668162.746294e-08
1.186461.5667382.782732e-08
1.19221.566662.819346e-08
1.197971.5665812.856137e-08
1.21.5665542.869100e-08
1.203761.5665033.004611e-08
1.209591.5664253.214307e-08
1.215441.5663473.425017e-08
1.221311.5662683.636746e-08
1.227221.566193.849500e-08
1.233161.5661124.063282e-08
1.239121.5660334.278099e-08
1.245121.5659554.493955e-08
1.251141.5658764.710855e-08
1.257191.5657974.928803e-08
1.263271.5657185.147807e-08
1.269381.5656395.367869e-08
1.275521.565565.588996e-08
1.281691.5654815.811192e-08
1.287891.5654026.034463e-08
1.294121.5653226.258815e-08
1.300381.5652436.484251e-08
1.306671.5651636.710778e-08
1.312991.5650836.938400e-08
1.319341.5650037.167124e-08
1.325721.5649227.396953e-08
1.332141.5648427.627895e-08
1.338581.5647617.859953e-08
1.345051.564688.093134e-08
1.351561.5645998.327443e-08
1.35811.5645188.562885e-08
1.364671.5644368.799466e-08
1.371271.5643549.037192e-08
1.37791.5642729.276067e-08
1.384561.564199.516097e-08
1.391261.5641079.757289e-08
1.397991.5640249.999647e-08
1.41.5641.007200e-07
1.404751.5639411.004519e-07
1.411551.5638581.000687e-07
1.418381.5637749.968363e-08
1.425241.563699.929669e-08
1.432131.5636069.890788e-08
1.439061.5635219.851719e-08
1.446021.5634369.812461e-08
1.453011.5633519.773013e-08
1.460041.5632659.733374e-08
1.46711.5631799.693544e-08
1.47421.5630929.653521e-08
1.481331.5630069.613304e-08
1.488491.5629189.572893e-08
1.495691.5628319.532286e-08
1.502931.5627439.491483e-08
1.51021.5626559.450482e-08
1.51751.5625669.409284e-08
1.524841.5624769.367886e-08
1.532221.5623879.326287e-08
1.539631.5622979.284488e-08
1.547081.5622069.242486e-08
1.554561.5621159.200281e-08
1.562081.5620239.157872e-08
1.569641.5619319.115258e-08
1.577231.5618399.072438e-08
1.584861.5617469.029410e-08
1.592521.5616528.986175e-08
1.61.5615618.944000e-08
1.600231.5615588.964865e-08
1.607971.5614649.682111e-08
1.615741.5613681.040283e-07
1.623561.5612731.112703e-07
1.631411.5611771.185473e-07
1.63931.561081.258596e-07
1.647231.5609821.332072e-07
1.65521.5608841.405904e-07
1.663211.5607861.480092e-07
1.671251.5606861.554640e-07
1.679331.5605871.629548e-07
1.687461.5604861.704818e-07
1.695621.5603851.780453e-07
1.703821.5602831.856453e-07
1.712061.5601811.932821e-07
1.720341.5600772.009559e-07
1.728661.5599742.086667e-07
1.737031.5598692.164149e-07
1.745431.5597642.242005e-07
1.753871.5596582.320238e-07
1.762351.5595512.398849e-07
1.770881.5594442.477841e-07
1.779441.5593362.557214e-07
1.788051.5592272.636972e-07
1.79671.5591172.717115e-07
1.81.5590752.747700e-07
1.805391.5590062.830910e-07
1.814121.5588952.965724e-07
1.82291.5587833.101189e-07
1.831711.558673.237310e-07
1.840571.5585563.374090e-07
1.849481.5584413.511531e-07
1.858421.5583263.649636e-07
1.867411.5582093.788410e-07
1.876441.5580923.927855e-07
1.885521.5579744.067974e-07
1.894641.5578544.208772e-07
1.903811.5577344.350250e-07
1.913011.5576134.492413e-07
1.922271.5574914.635263e-07
1.931571.5573684.778804e-07
1.940911.5572454.923039e-07
1.95031.557125.067973e-07
1.959731.5569945.213607e-07
1.969211.5568675.359945e-07
1.978731.5567395.506992e-07
1.98831.556615.654749e-07
1.997921.556485.803222e-07
21.5564515.835300e-07
2.007591.5563486.232945e-07
2.01731.5562166.741960e-07
2.027051.5560837.253437e-07
2.036861.5559487.767388e-07
2.046711.5558128.283825e-07
2.056611.5556768.802760e-07
2.066561.5555389.324205e-07
2.076551.5553989.848172e-07
2.08661.5552581.037467e-06
2.096691.5551161.090372e-06
2.106831.5549741.143533e-06
2.117021.554831.196951e-06
2.127261.5546841.250627e-06
2.137551.5545371.304563e-06
2.147891.554391.358760e-06
2.158281.554241.413218e-06
2.168721.554091.467941e-06
2.179211.5539381.522928e-06
2.189751.5537841.578181e-06
2.21.5536351.631900e-06
2.200341.553631.633666e-06
2.210991.5534741.688360e-06
2.221681.5533161.743318e-06
2.232431.5531571.798543e-06
2.243231.5529961.854035e-06
2.254081.5528351.909795e-06
2.264981.5526711.965824e-06
2.275931.5525062.022125e-06
2.286941.552342.078698e-06
2.2981.5521722.135545e-06
2.309121.5520022.192667e-06
2.320291.5518312.250065e-06
2.331511.5516582.307740e-06
2.342791.5514832.365695e-06
2.354121.5513072.423930e-06
2.365511.5511292.482446e-06
2.376951.550952.541246e-06
2.388451.5507682.600330e-06
2.41.5505852.659700e-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
—