Optical constants

Refractive index of S-LAM3 (OHARA)

S-LAM3: 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
1.717
Extinction coefficient k
1.76522e-08
Permittivity ε1
2.94809
Permittivity ε2
6.06178e-08
Absorption coefficient α
0.00377509 cm⁻¹
Penetration depth δ = λ/(2πk)
5.29788e+09 nm
Abbe number Vd
47.928
Chromatic dispersion dn/dλ
-0.0766397 µm⁻¹
Group index ng
1.76203
Group velocity dispersion
141.489 fs²/mm
Dispersion parameter D
-771.9 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-LAM3 (OHARA): S-LAM3
ohara_s_lam3 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-LAM3", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_lam3.range_nm)  # (340, 2400) nm
eps = ohara_s_lam3.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=1.64258713λ2λ2−0.0086824602+0.23963461λ2λ2−0.0351226242+1.22483026λ2λ2−116.604369

Valid from 0.34 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.64258713
C30.0086824602
C40.23963461
C50.0351226242
C61.22483026
C7116.604369

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -4.66e-06 9.34e-09 -3.89e-11 4.57e-07 5.81e-10 0.266
nd
1.717004
Vd
47.927969
glass code
717479
density
value: 4250
thermal expansion
value: 8e-06, temperature range: 243 343; value: 9.4e-06, temperature range: 293 573
dPgF
-0.0034
resistance
acid: 53.2; climatic: 2.0; phosphate: 4.2

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = -1.85e-06 K⁻¹ at 633 nm, dn/dT = -2.42e-06 K⁻¹ at 1310 nm, dn/dT = -2.46e-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-LAM3 (OHARA), S-LAM3: n and k versus wavelength
λ (µm)nk
0.341.7660636.230000e-06
0.3416691.7652495.604532e-06
0.3433471.7644474.975992e-06
0.3450331.7636554.344367e-06
0.3467271.7628753.709640e-06
0.3484291.7621063.071797e-06
0.351.7614092.483300e-06
0.350141.7613472.463406e-06
0.3518591.7605992.219232e-06
0.3535871.7598621.973860e-06
0.3553231.7591341.727282e-06
0.3570681.7584161.479494e-06
0.3588211.7577081.230489e-06
0.361.7572391.063000e-06
0.3605831.757011.033035e-06
0.3623531.7563219.419669e-07
0.3641321.7556418.504516e-07
0.365921.754977.584870e-07
0.3677171.7543096.660709e-07
0.3695221.7536565.732010e-07
0.371.7534855.486200e-07
0.3713361.7530115.107581e-07
0.373161.7523754.591055e-07
0.3749921.7517474.071994e-07
0.3768331.7511283.550384e-07
0.3786831.7505163.026212e-07
0.381.7500882.653200e-07
0.3805431.7499132.593834e-07
0.3824111.7493172.389426e-07
0.3842891.7487292.184014e-07
0.3861761.7481481.977594e-07
0.3880721.7475741.770160e-07
0.3899771.7470081.561708e-07
0.391.7470021.559200e-07
0.3918921.7464491.460067e-07
0.3938161.7458971.359241e-07
0.395751.7453521.257919e-07
0.3976931.7448141.156100e-07
0.3996451.7442821.053781e-07
0.41.7441871.035200e-07
0.4016081.7437571.000788e-07
0.403581.7432399.585786e-08
0.4055611.7427279.161623e-08
0.4075521.7422218.735378e-08
0.4095531.7417218.307041e-08
0.4115641.7412287.876600e-08
0.4135851.740747.444045e-08
0.4156161.7402587.009367e-08
0.4176561.7397826.572555e-08
0.4197071.7393126.133598e-08
0.421.7392466.070900e-08
0.4217681.7388475.939267e-08
0.4238391.7383885.785070e-08
0.425921.7379355.630117e-08
0.4280111.7374875.474403e-08
0.4301121.7370445.317924e-08
0.4322241.7366065.160677e-08
0.4343471.7361745.002658e-08
0.4364791.7357464.843863e-08
0.4386221.7353244.684288e-08
0.441.7350564.581700e-08
0.4407761.7349064.546682e-08
0.442941.7344934.449001e-08
0.4451151.7340864.350841e-08
0.44731.7336824.252198e-08
0.4494971.7332844.153072e-08
0.4517041.732894.053459e-08
0.4539211.73253.953356e-08
0.456151.7321153.852762e-08
0.458391.7317353.751674e-08
0.461.7314653.679000e-08
0.4606411.7313583.647109e-08
0.4629021.7309863.534497e-08
0.4651751.7306183.421333e-08
0.4674591.7302553.307613e-08
0.4697541.7298953.193335e-08
0.4720611.7295393.078496e-08
0.4743791.7291882.963093e-08
0.4767081.728842.847123e-08
0.4790481.7284962.730584e-08
0.481.7283582.683200e-08
0.48141.7281562.634969e-08
0.4837641.727822.553565e-08
0.4861391.7274872.471761e-08
0.4885261.7271582.389555e-08
0.4909251.7268332.306946e-08
0.4933351.7265112.223931e-08
0.4957581.7261932.140509e-08
0.4981921.7258782.056677e-08
0.51.7256471.994400e-08
0.5006381.7255671.985733e-08
0.5030961.7252591.952332e-08
0.5055661.7249541.918768e-08
0.5080481.7246521.885038e-08
0.5105431.7243541.851143e-08
0.513051.7240591.817081e-08
0.5155691.7237671.782852e-08
0.51811.7234781.748455e-08
0.5206441.7231931.713890e-08
0.52321.722911.679154e-08
0.5257691.722631.644248e-08
0.5283511.7223531.609170e-08
0.5309451.7220791.573921e-08
0.5335521.7218081.538498e-08
0.5361721.721541.502901e-08
0.5388041.7212751.467130e-08
0.541451.7210121.431183e-08
0.5441081.7207521.395059e-08
0.546781.7204951.358758e-08
0.5494641.720241.322279e-08
0.551.720191.315000e-08
0.5521621.7199881.340890e-08
0.5548731.7197391.373352e-08
0.5575981.7194921.405974e-08
0.5603351.7192481.438756e-08
0.5630871.7190061.471700e-08
0.5658511.7187661.504804e-08
0.568631.7185291.538072e-08
0.5714221.7182951.571503e-08
0.5742271.7180621.605098e-08
0.5770471.7178321.638857e-08
0.579881.7176051.672783e-08
0.5827271.7173791.706875e-08
0.5855881.7171561.741135e-08
0.5884641.7169351.775563e-08
0.5913531.7167161.810159e-08
0.5942561.7164991.844926e-08
0.5971741.7162851.879864e-08
0.61.716081.913700e-08
0.6001061.7160721.914039e-08
0.6030531.7158621.923438e-08
0.6060141.7156541.932884e-08
0.6089891.7154471.942376e-08
0.6119791.7152431.951914e-08
0.6149841.715041.961499e-08
0.6180041.714841.971132e-08
0.6210381.7146411.980811e-08
0.6240871.7144441.990539e-08
0.6271521.714252.000313e-08
0.6302311.7140572.010136e-08
0.6333251.7138652.020008e-08
0.6364351.7136762.029927e-08
0.639561.7134882.039895e-08
0.64271.7133022.049913e-08
0.6458561.7131182.059979e-08
0.6490271.7129362.070095e-08
0.651.712882.073200e-08
0.6522131.7127552.055511e-08
0.6554161.7125762.029918e-08
0.6586341.7123982.004199e-08
0.6618681.7122221.978354e-08
0.6651171.7120481.952382e-08
0.6683831.7118751.926283e-08
0.6716651.7117041.900055e-08
0.6749631.7115341.873699e-08
0.6782771.7113661.847213e-08
0.6816071.7111991.820597e-08
0.6849541.7110341.793850e-08
0.6883171.710871.766973e-08
0.6916961.7107081.739963e-08
0.6950931.7105471.712820e-08
0.6985051.7103871.685545e-08
0.71.7103181.673600e-08
0.7019351.7102291.653540e-08
0.7053821.7100721.617812e-08
0.7088451.7099161.581908e-08
0.7123251.7097621.545829e-08
0.7158231.7096091.509572e-08
0.7193371.7094571.473136e-08
0.7228691.7093071.436523e-08
0.7264191.7091581.399729e-08
0.7299851.709011.362754e-08
0.7335691.7088631.325599e-08
0.7371711.7087181.288260e-08
0.7407911.7085731.250738e-08
0.7444281.708431.213033e-08
0.7480831.7082881.175142e-08
0.7517561.7081471.137064e-08
0.7554471.7080071.098800e-08
0.7591561.7078681.060348e-08
0.7628841.7077311.021708e-08
0.766631.7075949.828773e-09
0.7703941.7074599.438562e-09
0.7741761.7073249.046435e-09
0.7779781.7071918.652383e-09
0.7817971.7070588.256396e-09
0.7856361.7069277.858465e-09
0.7894931.7067967.458580e-09
0.793371.7066677.056731e-09
0.7972651.7065386.652910e-09
0.81.7064496.369400e-09
0.801181.706416.548108e-09
0.8051131.7062847.144017e-09
0.8090671.7061587.742852e-09
0.8130391.7060338.344627e-09
0.8170311.7059098.949357e-09
0.8210431.7057859.557056e-09
0.8250741.7056631.016774e-08
0.8291251.7055411.078142e-08
0.8331961.7054211.139811e-08
0.8372871.7053011.201784e-08
0.8413981.7051821.264060e-08
0.8455291.7050631.326643e-08
0.8496811.7049461.389532e-08
0.8538531.7048291.452730e-08
0.8580451.7047131.516239e-08
0.8622581.7045971.580060e-08
0.8664921.7044831.644193e-08
0.8707461.7043691.708642e-08
0.8750211.7042561.773407e-08
0.8793181.7041431.838490e-08
0.8836351.7040311.903893e-08
0.8879741.703921.969617e-08
0.8923341.7038092.035664e-08
0.8967151.7036992.102034e-08
0.91.7036182.151800e-08
0.9011181.703592.154472e-08
0.9055421.7034812.165051e-08
0.9099881.7033732.175682e-08
0.9144561.7032662.186365e-08
0.9189461.7031592.197100e-08
0.9234581.7030522.207889e-08
0.9279921.7029472.218730e-08
0.9325491.7028412.229624e-08
0.9371281.7027372.240572e-08
0.9417291.7026322.251574e-08
0.9463531.7025292.262629e-08
0.9509991.7024252.273739e-08
0.9556691.7023232.284903e-08
0.9603611.702222.296123e-08
0.9650761.7021182.307397e-08
0.9698151.7020172.318727e-08
0.9745761.7019162.330112e-08
0.9793621.7018162.341553e-08
0.984171.7017162.353051e-08
0.9890021.7016162.364605e-08
0.9938581.7015172.376215e-08
0.9987381.7014182.387883e-08
11.7013922.390900e-08
1.003641.7013192.417058e-08
1.008571.7012212.452452e-08
1.013521.7011242.488020e-08
1.01851.7010262.523763e-08
1.02351.7009292.559681e-08
1.028521.7008322.595775e-08
1.033571.7007362.632047e-08
1.038651.700642.668497e-08
1.043751.7005442.705125e-08
1.048871.7004492.741934e-08
1.054021.7003532.778923e-08
1.05921.7002582.816094e-08
1.06441.7001642.853448e-08
1.069631.7000692.890984e-08
1.074881.6999752.928706e-08
1.080151.6998812.966612e-08
1.085461.6997873.004704e-08
1.090791.6996943.042984e-08
1.096141.69963.081451e-08
1.101531.6995073.120108e-08
1.106931.6994143.158954e-08
1.112371.6993213.197991e-08
1.117831.6992293.237219e-08
1.123321.6991363.276640e-08
1.128831.6990443.316255e-08
1.134381.6989523.356064e-08
1.139951.6988593.396069e-08
1.145541.6987683.436270e-08
1.151171.6986763.476669e-08
1.156821.6985843.517265e-08
1.16251.6984923.558062e-08
1.168211.6984013.599058e-08
1.173941.6983093.640256e-08
1.179711.6982173.681656e-08
1.18551.6981263.723259e-08
1.191321.6980353.765067e-08
1.197171.6979433.807080e-08
1.21.6978993.827400e-08
1.203051.6978523.871261e-08
1.208961.697763.956238e-08
1.214891.6976694.041632e-08
1.220861.6975784.127446e-08
1.226851.6974864.213681e-08
1.232871.6973954.300339e-08
1.238931.6973044.387422e-08
1.245011.6972124.474934e-08
1.251121.6971214.562874e-08
1.257271.6970294.651247e-08
1.263441.6969374.740054e-08
1.269641.6968454.829296e-08
1.275881.6967544.918977e-08
1.282141.6966625.009098e-08
1.288441.6965695.099662e-08
1.294761.6964775.190670e-08
1.301121.6963855.282125e-08
1.307511.6962925.374030e-08
1.313931.69625.466385e-08
1.320381.6961075.559194e-08
1.326861.6960145.652458e-08
1.333381.6959215.746181e-08
1.339931.6958285.840364e-08
1.34651.6957345.935009e-08
1.353121.695646.030119e-08
1.359761.6955466.125695e-08
1.366441.6954526.221741e-08
1.373141.6953586.318259e-08
1.379891.6952636.415251e-08
1.386661.6951686.512718e-08
1.393471.6950736.610665e-08
1.41.6949826.704600e-08
1.400311.6949776.710099e-08
1.407191.6948826.831190e-08
1.41411.6947856.952875e-08
1.421041.6946897.075158e-08
1.428021.6945927.198041e-08
1.435031.6944957.321528e-08
1.442071.6943987.445621e-08
1.449161.69437.570323e-08
1.456271.6942027.695637e-08
1.463421.6941047.821567e-08
1.470611.6940057.948115e-08
1.477831.6939068.075285e-08
1.485081.6938068.203078e-08
1.492371.6937068.331500e-08
1.49971.6936058.460551e-08
1.507071.6935058.590237e-08
1.514471.6934038.720559e-08
1.52191.6933018.851521e-08
1.529371.6931998.983126e-08
1.536881.6930969.115377e-08
1.544431.6929939.248278e-08
1.552011.6928899.381831e-08
1.559631.6927859.516040e-08
1.567291.692689.650908e-08
1.574991.6925759.786438e-08
1.582721.6924699.922633e-08
1.590491.6923631.005950e-07
1.59831.6922561.019703e-07
1.61.6922331.022700e-07
1.606151.6921481.066746e-07
1.614031.692041.123262e-07
1.621961.6919311.180055e-07
1.629921.6918221.237127e-07
1.637921.6917121.294480e-07
1.645971.6916011.352114e-07
1.654051.691491.410030e-07
1.662171.6913781.468232e-07
1.670331.6912661.526719e-07
1.678531.6911521.585493e-07
1.686771.6910381.644556e-07
1.695051.6909241.703909e-07
1.703381.6908081.763553e-07
1.711741.6906921.823490e-07
1.720151.6905751.883721e-07
1.728591.6904581.944248e-07
1.737081.6903392.005073e-07
1.745611.690222.066196e-07
1.754181.69012.127619e-07
1.762791.6899792.189343e-07
1.771451.6898572.251371e-07
1.780141.6897352.313703e-07
1.788881.6896112.376341e-07
1.797671.6894872.439287e-07
1.81.6894542.456000e-07
1.806491.6893622.555020e-07
1.815361.6892362.690258e-07
1.824281.6891092.826160e-07
1.833231.6889812.962729e-07
1.842241.6888523.099969e-07
1.851281.6887233.237883e-07
1.860371.6885923.376473e-07
1.869511.688463.515745e-07
1.878681.6883283.655700e-07
1.887911.6881943.796342e-07
1.897181.6880593.937675e-07
1.906491.6879234.079701e-07
1.915851.6877864.222425e-07
1.925261.6876494.365850e-07
1.934711.6875094.509979e-07
1.944211.6873694.654816e-07
1.953761.6872284.800364e-07
1.963351.6870864.946626e-07
1.972991.6869425.093607e-07
1.982681.6867975.241309e-07
1.992411.6866515.389737e-07
21.6865375.505400e-07
2.00221.6865045.605268e-07
2.012031.6863566.052201e-07
2.021911.6862066.501329e-07
2.031831.6860566.952661e-07
2.041811.6859037.406210e-07
2.051841.685757.861985e-07
2.061911.6855958.319999e-07
2.072031.6854398.780261e-07
2.082211.6852829.242783e-07
2.092431.6851239.707576e-07
2.10271.6849631.017465e-06
2.113031.6848011.064402e-06
2.12341.6846381.111569e-06
2.133831.6844741.158968e-06
2.144311.6843081.206600e-06
2.154831.684141.254465e-06
2.165411.6839711.302566e-06
2.176051.6838011.350902e-06
2.186731.6836291.399476e-06
2.197471.6834551.448289e-06
2.21.6834141.459800e-06
2.208261.683281.605623e-06
2.21911.6831031.797095e-06
2.231.6829251.989508e-06
2.240941.6827452.182865e-06
2.251951.6825632.377171e-06
2.2631.682382.572432e-06
2.274121.6821942.768651e-06
2.285281.6820082.965833e-06
2.29651.6818193.163984e-06
2.307781.6816283.363108e-06
2.319111.6814363.563209e-06
2.33051.6812423.764293e-06
2.341941.6810463.966364e-06
2.353441.6808484.169427e-06
2.364991.6806484.373488e-06
2.37661.6804464.578550e-06
2.388271.6802434.784619e-06
2.41.6800374.991700e-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
—