Optical constants

Refractive index of S-BAH10 (OHARA)

S-BAH10: n,k 0.34–2.4 µm

Data
formula 2 + tabulated k
Range
0.34–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.34–2.4 µm
Refractive index n
1.67003
Extinction coefficient k
1.76522e-08
Permittivity ε1
2.78899
Permittivity ε2
5.89593e-08
Absorption coefficient α
0.00377509 cm⁻¹
Penetration depth δ = λ/(2πk)
5.29788e+09 nm
Abbe number Vd
47.231
Chromatic dispersion dn/dλ
-0.0726223 µm⁻¹
Group index ng
1.7127
Group velocity dispersion
134.2 fs²/mm
Dispersion parameter D
-732.132 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-BAH10 (OHARA): S-BAH10
ohara_s_bah10 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-BAH10", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_bah10.range_nm)  # (340, 2400) nm
eps = ohara_s_bah10.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=1.59034337λ2λ2−0.0093273434+0.138464579λ2λ2−0.0427498654+1.21988043λ2λ2−119.251777

Valid from 0.34 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.59034337
C30.0093273434
C40.138464579
C50.0427498654
C61.21988043
C7119.251777

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 3.39e-06 1.19e-08 -3.43e-11 5.18e-07 5.64e-10 0.261
nd
1.670029
Vd
47.230916
glass code
670473
density
value: 3480
thermal expansion
value: 6.8e-06, temperature range: 243 343; value: 8e-06, temperature range: 293 573
dPgF
-0.0024
resistance
acid: 51.2; climatic: 2.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 2.64e-06 K⁻¹ at 633 nm, dn/dT = 1.93e-06 K⁻¹ at 1310 nm, dn/dT = 1.88e-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 424 wavelengths, the same grid as the API and the library
S-BAH10 (OHARA), S-BAH10: n and k versus wavelength
λ (µm)nk
0.341.7171081.246000e-05
0.3416691.716311.115212e-05
0.3433471.7155249.837819e-06
0.3450331.714758.517065e-06
0.3467271.7139877.189826e-06
0.3484291.7132365.856070e-06
0.351.7125564.625500e-06
0.350141.7124964.590164e-06
0.3518591.7117674.156451e-06
0.3535871.7110483.720609e-06
0.3553231.710343.282627e-06
0.3570681.7096432.842494e-06
0.3588211.7089552.400201e-06
0.361.7084992.102700e-06
0.3605831.7082772.041387e-06
0.3623531.7076081.855048e-06
0.3641321.7069491.667794e-06
0.365921.70631.479620e-06
0.3677171.7056591.290522e-06
0.3695221.7050271.100497e-06
0.371.7048621.050200e-06
0.3713361.7044049.851478e-07
0.373161.7037898.964013e-07
0.3749921.7031838.072191e-07
0.3768331.7025857.175990e-07
0.3786831.7019956.275389e-07
0.381.7015825.634500e-07
0.3805431.7014135.502446e-07
0.3824111.7008395.047760e-07
0.3842891.7002734.590841e-07
0.3861761.6997144.131678e-07
0.3880721.6991623.670261e-07
0.3899771.6986173.206578e-07
0.391.6986113.201000e-07
0.3918921.698082.974432e-07
0.3938161.697552.743994e-07
0.395751.6970262.512423e-07
0.3976931.696512.279716e-07
0.3996451.6962.045866e-07
0.41.6959082.003400e-07
0.4016081.6954961.926964e-07
0.403581.6949991.833212e-07
0.4055611.6945081.738999e-07
0.4075521.6940231.644323e-07
0.4095531.6935451.549182e-07
0.4115641.6930721.453574e-07
0.4135851.6926051.357497e-07
0.4156161.6921441.260948e-07
0.4176561.6916891.163926e-07
0.4197071.691241.066426e-07
0.421.6911761.052500e-07
0.4217681.6907961.025154e-07
0.4238391.6903579.931211e-08
0.425921.6899249.609307e-08
0.4280111.6894969.285822e-08
0.4301121.6890738.960750e-08
0.4322241.6886558.634081e-08
0.4343471.6882428.305808e-08
0.4364791.6878347.975923e-08
0.4386221.6874317.644419e-08
0.441.6871767.431300e-08
0.4407761.6870337.372063e-08
0.442941.686647.206828e-08
0.4451151.6862517.040780e-08
0.44731.6858676.873918e-08
0.4494971.6854876.706236e-08
0.4517041.6851126.537731e-08
0.4539211.6847416.368399e-08
0.456151.6843746.198235e-08
0.458391.6840126.027235e-08
0.461.6837555.904300e-08
0.4606411.6836545.850519e-08
0.4629021.68335.660613e-08
0.4651751.682955.469775e-08
0.4674591.6826045.278000e-08
0.4697541.6822625.085283e-08
0.4720611.6819244.891620e-08
0.4743791.6815894.697006e-08
0.4767081.6812594.501437e-08
0.4790481.6809324.304907e-08
0.481.68084.225000e-08
0.48141.6806094.124869e-08
0.4837641.6802893.955868e-08
0.4861391.6799733.786037e-08
0.4885261.679663.615372e-08
0.4909251.6793513.443869e-08
0.4933351.6790463.271524e-08
0.4957581.6787433.098333e-08
0.4981921.6784452.924291e-08
0.51.6782252.795000e-08
0.5006381.6781492.776120e-08
0.5030961.6778562.703360e-08
0.5055661.6775672.630243e-08
0.5080481.6772812.556767e-08
0.5105431.6769982.482930e-08
0.513051.6767182.408730e-08
0.5155691.6764412.334166e-08
0.51811.6761672.259236e-08
0.5206441.6758962.183938e-08
0.52321.6756282.108271e-08
0.5257691.6753622.032231e-08
0.5283511.67511.955819e-08
0.5309451.674841.879031e-08
0.5335521.6745831.801866e-08
0.5361721.6743291.724323e-08
0.5388041.6740771.646399e-08
0.541451.6738281.568092e-08
0.5441081.6735821.489400e-08
0.546781.6733381.410322e-08
0.5494641.6730961.330856e-08
0.551.6730491.315000e-08
0.5521621.6728571.340890e-08
0.5548731.6726211.373352e-08
0.5575981.6723871.405974e-08
0.5603351.6721551.438756e-08
0.5630871.6719261.471700e-08
0.5658511.6716991.504804e-08
0.568631.6714741.538072e-08
0.5714221.6712521.571503e-08
0.5742271.6710321.605098e-08
0.5770471.6708141.638857e-08
0.579881.6705981.672783e-08
0.5827271.6703841.706875e-08
0.5855881.6701731.741135e-08
0.5884641.6699641.775563e-08
0.5913531.6697561.810159e-08
0.5942561.6695511.844926e-08
0.5971741.6693481.879864e-08
0.61.6691531.913700e-08
0.6001061.6691461.914039e-08
0.6030531.6689471.923438e-08
0.6060141.6687491.932884e-08
0.6089891.6685541.942376e-08
0.6119791.668361.951914e-08
0.6149841.6681681.961499e-08
0.6180041.6679781.971132e-08
0.6210381.667791.980811e-08
0.6240871.6676041.990539e-08
0.6271521.6674192.000313e-08
0.6302311.6672362.010136e-08
0.6333251.6670552.020008e-08
0.6364351.6668752.029927e-08
0.639561.6666982.039895e-08
0.64271.6665212.049913e-08
0.6458561.6663472.059979e-08
0.6490271.6661742.070095e-08
0.651.6661212.073200e-08
0.6522131.6660022.055511e-08
0.6554161.6658332.029918e-08
0.6586341.6656642.004199e-08
0.6618681.6654981.978354e-08
0.6651171.6653321.952382e-08
0.6683831.6651681.926283e-08
0.6716651.6650061.900055e-08
0.6749631.6648451.873699e-08
0.6782771.6646861.847213e-08
0.6816071.6645281.820597e-08
0.6849541.6643711.793850e-08
0.6883171.6642151.766973e-08
0.6916961.6640611.739963e-08
0.6950931.6639091.712820e-08
0.6985051.6637571.685545e-08
0.71.6636921.673600e-08
0.7019351.6636071.665877e-08
0.7053821.6634581.652122e-08
0.7088451.6633111.638300e-08
0.7123251.6631641.624410e-08
0.7158231.6630191.610451e-08
0.7193371.6628751.596424e-08
0.7228691.6627331.582328e-08
0.7264191.6625911.568163e-08
0.7299851.6624511.553929e-08
0.7335691.6623111.539624e-08
0.7371711.6621731.525249e-08
0.7407911.6620361.510804e-08
0.7444281.66191.496288e-08
0.7480831.6617651.481700e-08
0.7517561.6616311.467041e-08
0.7554471.6614991.452310e-08
0.7591561.6613671.437507e-08
0.7628841.6612361.422630e-08
0.766631.6611061.407681e-08
0.7703941.6609781.392659e-08
0.7741761.660851.377562e-08
0.7779781.6607231.362392e-08
0.7817971.6605971.347147e-08
0.7856361.6604721.331827e-08
0.7894931.6603481.316432e-08
0.793371.6602251.300961e-08
0.7972651.6601021.285415e-08
0.81.6600171.274500e-08
0.801181.6599811.284850e-08
0.8051131.659861.319360e-08
0.8090671.659741.354041e-08
0.8130391.6596211.388891e-08
0.8170311.6595031.423913e-08
0.8210431.6593861.459107e-08
0.8250741.659271.494473e-08
0.8291251.6591541.530013e-08
0.8331961.6590391.565728e-08
0.8372871.6589251.601618e-08
0.8413981.6588111.637684e-08
0.8455291.6586981.673927e-08
0.8496811.6585861.710348e-08
0.8538531.6584751.746948e-08
0.8580451.6583641.783728e-08
0.8622581.6582541.820688e-08
0.8664921.6581451.857830e-08
0.8707461.6580361.895154e-08
0.8750211.6579281.932662e-08
0.8793181.6578211.970353e-08
0.8836351.6577142.008230e-08
0.8879741.6576082.046292e-08
0.8923341.6575022.084542e-08
0.8967151.6573972.122979e-08
0.91.6573192.151800e-08
0.9011181.6572932.154472e-08
0.9055421.6571892.165051e-08
0.9099881.6570862.175682e-08
0.9144561.6569832.186365e-08
0.9189461.6568812.197100e-08
0.9234581.6567792.207889e-08
0.9279921.6566782.218730e-08
0.9325491.6565772.229624e-08
0.9371281.6564772.240572e-08
0.9417291.6563772.251574e-08
0.9463531.6562782.262629e-08
0.9509991.6561792.273739e-08
0.9556691.656082.284903e-08
0.9603611.6559822.296123e-08
0.9650761.6558852.307397e-08
0.9698151.6557882.318727e-08
0.9745761.6556912.330112e-08
0.9793621.6555952.341553e-08
0.984171.6554992.353051e-08
0.9890021.6554032.364605e-08
0.9938581.6553082.376215e-08
0.9987381.6552132.387883e-08
11.6551892.390900e-08
1.003641.6551182.382176e-08
1.008571.6550242.370371e-08
1.013521.654932.358509e-08
1.01851.6548372.346588e-08
1.02351.6547432.334608e-08
1.028521.654652.322570e-08
1.033571.6545582.310473e-08
1.038651.6544652.298316e-08
1.043751.6543732.286100e-08
1.048871.6542812.273824e-08
1.054021.654192.261487e-08
1.05921.6540982.249090e-08
1.06441.6540072.236632e-08
1.069631.6539162.224112e-08
1.074881.6538252.211532e-08
1.080151.6537342.198889e-08
1.085461.6536442.186185e-08
1.090791.6535542.173418e-08
1.096141.6534642.160588e-08
1.101531.6533742.147695e-08
1.106931.6532842.134739e-08
1.112371.6531942.121720e-08
1.117831.6531052.108636e-08
1.123321.6530162.095489e-08
1.128831.6529262.082277e-08
1.134381.6528372.068999e-08
1.139951.6527482.055657e-08
1.145541.6526592.042249e-08
1.151171.652572.028776e-08
1.156821.6524812.015236e-08
1.16251.6523932.001629e-08
1.168211.6523041.987956e-08
1.173941.6522151.974216e-08
1.179711.6521261.960408e-08
1.18551.6520381.946533e-08
1.191321.6519491.932589e-08
1.197171.6518611.918577e-08
1.21.6518181.911800e-08
1.203051.6517721.950727e-08
1.208961.6516832.026143e-08
1.214891.6515952.101930e-08
1.220861.6515062.178089e-08
1.226851.6514172.254622e-08
1.232871.6513282.331531e-08
1.238931.6512392.408817e-08
1.245011.651152.486483e-08
1.251121.6510612.564530e-08
1.257271.6509722.642960e-08
1.263441.6508832.721775e-08
1.269641.6507942.800978e-08
1.275881.6507042.880569e-08
1.282141.6506152.960551e-08
1.288441.6505253.040926e-08
1.294761.6504353.121695e-08
1.301121.6503453.202861e-08
1.307511.6502553.284426e-08
1.313931.6501653.366391e-08
1.320381.6500743.448758e-08
1.326861.6499833.531530e-08
1.333381.6498923.614708e-08
1.339931.6498013.698295e-08
1.34651.649713.782292e-08
1.353121.6496183.866701e-08
1.359761.6495263.951525e-08
1.366441.6494344.036766e-08
1.373141.6493424.122424e-08
1.379891.6492494.208504e-08
1.386661.6491564.295006e-08
1.393471.6490634.381933e-08
1.41.6489744.465300e-08
1.400311.648974.466296e-08
1.407191.6488764.488225e-08
1.41411.6487824.510262e-08
1.421041.6486874.532407e-08
1.428021.6485934.554661e-08
1.435031.6484974.577024e-08
1.442071.6484024.599497e-08
1.449161.6483064.622081e-08
1.456271.648214.644775e-08
1.463421.6481134.667581e-08
1.470611.6480164.690498e-08
1.477831.6479194.713528e-08
1.485081.6478214.736672e-08
1.492371.6477234.759928e-08
1.49971.6476244.783300e-08
1.507071.6475254.806785e-08
1.514471.6474254.830386e-08
1.52191.6473254.854103e-08
1.529371.6472244.877937e-08
1.536881.6471234.901887e-08
1.544431.6470224.925955e-08
1.552011.646924.950142e-08
1.559631.6468174.974446e-08
1.567291.6467144.998871e-08
1.574991.646615.023415e-08
1.582721.6465065.048080e-08
1.590491.6464015.072866e-08
1.59831.6462955.097773e-08
1.61.6462735.103200e-08
1.606151.6461895.344336e-08
1.614031.6460835.653740e-08
1.621961.6459765.964663e-08
1.629921.6458686.277112e-08
1.637921.6457596.591095e-08
1.645971.645656.906620e-08
1.654051.645547.223694e-08
1.662171.645437.542325e-08
1.670331.6453197.862521e-08
1.678531.6452078.184288e-08
1.686771.6450948.507636e-08
1.695051.6449818.832571e-08
1.703381.6448679.159102e-08
1.711741.6447529.487235e-08
1.720151.6446369.816980e-08
1.728591.644521.014834e-07
1.737081.6444031.048134e-07
1.745611.6442851.081596e-07
1.754181.6441661.115223e-07
1.762791.6440471.149015e-07
1.771451.6439261.182973e-07
1.780141.6438051.217098e-07
1.788881.6436831.251390e-07
1.797671.643561.285850e-07
1.81.6435271.295000e-07
1.806491.6434361.352086e-07
1.815361.6433111.430051e-07
1.824281.6431861.508400e-07
1.833231.6430591.587133e-07
1.842241.6429311.666253e-07
1.851281.6428031.745761e-07
1.860371.6426731.825659e-07
1.869511.6425431.905950e-07
1.878681.6424111.986635e-07
1.887911.6422782.067716e-07
1.897181.6421452.149196e-07
1.906491.642012.231075e-07
1.915851.6418742.313356e-07
1.925261.6417382.396042e-07
1.934711.64162.479133e-07
1.944211.6414612.562632e-07
1.953761.641322.646542e-07
1.963351.6411792.730863e-07
1.972991.6410372.815598e-07
1.982681.6408932.900750e-07
1.992411.6407482.986319e-07
21.6406353.053000e-07
2.00221.6406023.120123e-07
2.012031.6404553.420515e-07
2.021911.6403063.722382e-07
2.031831.6401564.025730e-07
2.041811.6400054.330569e-07
2.051841.6398534.636903e-07
2.061911.6396994.944742e-07
2.072031.6395445.254093e-07
2.082211.6393885.564962e-07
2.092431.639235.877358e-07
2.10271.6390716.191288e-07
2.113031.638916.506759e-07
2.12341.6387486.823778e-07
2.133831.6385847.142355e-07
2.144311.6384197.462496e-07
2.154831.6382537.784208e-07
2.165411.6380858.107500e-07
2.176051.6379158.432380e-07
2.186731.6377448.758854e-07
2.197471.6375729.086932e-07
2.21.6375319.164300e-07
2.208261.6373981.006745e-06
2.21911.6372221.125333e-06
2.231.6370441.244503e-06
2.240941.6368651.364258e-06
2.251951.6366841.484601e-06
2.2631.6365021.605535e-06
2.274121.6363171.727062e-06
2.285281.6361311.849187e-06
2.29651.6359441.971911e-06
2.307781.6357542.095237e-06
2.319111.6355632.219169e-06
2.33051.6353692.343710e-06
2.341941.6351742.468862e-06
2.353441.6349772.594628e-06
2.364991.6347782.721012e-06
2.37661.6345772.848017e-06
2.388271.6343752.975645e-06
2.41.634173.103900e-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
—