Optical constants

Refractive index of J-LAF01 (HIKARI)

J-LAF01: n,k 0.3889–2.058 µm

Data
formula 3 + tabulated k
Range
0.3889–2.058 µm
Temperature
296 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.3889–2.058 µm
Refractive index n
1.7
Extinction coefficient k
2.45299e-08
Permittivity ε1
2.88999
Permittivity ε2
8.34016e-08
Absorption coefficient α
0.00524595 cm⁻¹
Penetration depth δ = λ/(2πk)
3.81246e+09 nm
Abbe number Vd
48.104
Chromatic dispersion dn/dλ
-0.0745638 µm⁻¹
Group index ng
1.74381
Group velocity dispersion
137.479 fs²/mm
Dispersion parameter D
-750.023 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

# J-LAF01 (HIKARI): J-LAF01
hikari_j_laf01 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LAF01", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_laf01.range_nm)  # (388.865, 2058.09) nm
eps = hikari_j_laf01.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=2.82684251−0.0103793494⁢λ2.0−7.59583803×10-5⁢λ4.0+0.021662046⁢λ−2.0+0.000472548975⁢λ−4.0−2.58637501×10-6⁢λ−6.0+1.43317138×10-6⁢λ−8.0

Valid from 0.388865 to 2.05809 µm.

Coefficients as stored
CiValue
C12.82684251
C2-0.0103793494
C32.0
C4-7.59583803e-05
C54.0
C60.021662046
C7-2.0
C80.000472548975
C9-4.0
C10-2.58637501e-06
C11-6.0
C121.43317138e-06
C13-8.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: -2.9983e-07 1.0398e-08 -2.1837e-12 7.6422e-07 7.8937e-10 0.15326
nd
1.700000
Vd
48.103628
density
value: 3680
thermal expansion
value: 7.3e-06, temperature range: 243 343
dPgF
-0.0033
resistance
phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 9.56e-07 K⁻¹ at 633 nm, dn/dT = 8.22e-08 K⁻¹ at 1310 nm, dn/dT = 1.16e-08 K⁻¹ at 1550 nm

References

Cite

NIKON Zemax catalog 2017-11 (obtained from http://www.nikon.com); See also HIKARI 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 419 wavelengths, the same grid as the API and the library
J-LAF01 (HIKARI), J-LAF01: n and k versus wavelength
λ (µm)nk
0.3888651.7295042.190249e-07
0.391.7291762.019500e-07
0.3904921.7290351.985679e-07
0.3921271.7285731.873427e-07
0.3937681.7281151.760705e-07
0.3954151.7276621.647512e-07
0.397071.7272131.533845e-07
0.3987321.726771.419702e-07
0.41.7264361.332600e-07
0.4004011.7263321.320800e-07
0.4020761.7258981.271444e-07
0.4037591.7254681.221881e-07
0.4054491.7250431.172111e-07
0.4071451.7246231.122132e-07
0.4088491.7242071.071945e-07
0.410561.7237951.021547e-07
0.4122781.7233889.709384e-08
0.4140041.7229859.201181e-08
0.4157361.7225868.690851e-08
0.4174761.7221918.178385e-08
0.4192231.7218017.663775e-08
0.421.7216297.435000e-08
0.4209781.7214147.347621e-08
0.4227391.7210317.190172e-08
0.4245091.7206527.032065e-08
0.4262851.7202776.873295e-08
0.4280691.7199066.713862e-08
0.4298611.7195396.553761e-08
0.431661.7191756.392990e-08
0.4334661.7188156.231547e-08
0.435281.7184586.069427e-08
0.4371021.7181055.906630e-08
0.4389311.7177565.743151e-08
0.441.7175545.647600e-08
0.4407681.717415.600446e-08
0.4426121.7170685.487152e-08
0.4444651.7167295.373383e-08
0.4463251.7163935.259139e-08
0.4481931.7160615.144416e-08
0.4500681.7157315.029214e-08
0.4519521.7154064.913529e-08
0.4538431.7150834.797360e-08
0.4557421.7147634.680705e-08
0.457651.7144474.563562e-08
0.4595651.7141334.445929e-08
0.461.7140634.419200e-08
0.4614881.7138234.347334e-08
0.4634191.7135164.254062e-08
0.4653591.7132114.160400e-08
0.4673061.712914.066346e-08
0.4692621.7126113.971898e-08
0.4712261.7123153.877055e-08
0.4731981.7120223.781815e-08
0.4751781.7117323.686177e-08
0.4771671.7114453.590138e-08
0.4791641.711163.493697e-08
0.481.7110423.453300e-08
0.4811691.7108783.414829e-08
0.4831821.7105993.348550e-08
0.4852051.7103223.281993e-08
0.4872351.7100483.215157e-08
0.4892741.7097773.148042e-08
0.4913221.7095083.080646e-08
0.4933781.7092413.012968e-08
0.4954431.7089772.945007e-08
0.4975161.7087152.876761e-08
0.4995981.7084562.808230e-08
0.51.7084072.795000e-08
0.5016891.7081992.789562e-08
0.5037881.7079452.782801e-08
0.5058971.7076932.776013e-08
0.5080141.7074432.769195e-08
0.510141.7071962.762350e-08
0.5122751.706952.755475e-08
0.5144191.7067072.748572e-08
0.5165711.7064672.741640e-08
0.5187331.7062282.734679e-08
0.5209041.7059922.727689e-08
0.5230841.7057572.720670e-08
0.5252731.7055252.713621e-08
0.5274711.7052952.706543e-08
0.5296791.7050672.699435e-08
0.5318951.7048412.692297e-08
0.5341211.7046172.685129e-08
0.5363571.7043942.677932e-08
0.5386011.7041742.670704e-08
0.5408551.7039562.663446e-08
0.5431191.703742.656158e-08
0.5453921.7035262.648839e-08
0.5476741.7033132.641490e-08
0.5499661.7031032.634110e-08
0.551.7030992.634000e-08
0.5522681.7028942.623084e-08
0.5545791.7026872.611958e-08
0.55691.7024822.600785e-08
0.559231.7022782.589566e-08
0.561571.7020772.578300e-08
0.5639211.7018772.566986e-08
0.5662811.7016792.555625e-08
0.568651.7014822.544217e-08
0.571031.7012872.532761e-08
0.573421.7010942.521257e-08
0.575821.7009032.509704e-08
0.5782291.7007132.498104e-08
0.5806491.7005252.486455e-08
0.5830791.7003382.474757e-08
0.5855191.7001532.463010e-08
0.587971.699972.451214e-08
0.590431.6997882.439368e-08
0.5929011.6996072.427473e-08
0.5953821.6994282.415529e-08
0.5978741.6992512.403534e-08
0.61.6991012.393300e-08
0.6003761.6990752.398714e-08
0.6028891.69892.434874e-08
0.6054121.6987272.471186e-08
0.6079451.6985552.507650e-08
0.610491.6983852.544266e-08
0.6130441.6982162.581035e-08
0.615611.6980492.617959e-08
0.6181861.6978832.655036e-08
0.6207731.6977182.692269e-08
0.6233711.6975542.729658e-08
0.625981.6973922.767204e-08
0.62861.6972312.804906e-08
0.631231.6970722.842766e-08
0.6338721.6969142.880785e-08
0.6365251.6967562.918963e-08
0.6391881.6966012.957300e-08
0.6418631.6964462.995798e-08
0.644551.6962933.034457e-08
0.6472471.6961413.073278e-08
0.6499561.695993.112261e-08
0.651.6959873.112900e-08
0.6526761.695843.125711e-08
0.6554071.6956913.138789e-08
0.658151.6955443.151922e-08
0.6609041.6953983.165109e-08
0.663671.6952523.178352e-08
0.6664471.6951083.191650e-08
0.6692361.6949653.205004e-08
0.6720371.6948233.218414e-08
0.674851.6946833.231880e-08
0.6776741.6945433.245402e-08
0.680511.6944043.258981e-08
0.6833581.6942663.272617e-08
0.6862171.694133.286309e-08
0.6890891.6939943.300059e-08
0.6919731.6938593.313867e-08
0.6948691.6937263.327732e-08
0.6977771.6935933.341656e-08
0.71.6934933.352300e-08
0.7006971.6934613.373531e-08
0.7036291.6933313.462848e-08
0.7065741.6932013.552538e-08
0.7095311.6930723.642604e-08
0.71251.6929443.733047e-08
0.7154821.6928173.823869e-08
0.7184761.6926913.915070e-08
0.7214831.6925664.006654e-08
0.7245021.6924414.098620e-08
0.7275341.6923184.190972e-08
0.7305791.6921954.283709e-08
0.7336371.6920744.376835e-08
0.7367071.6919534.470351e-08
0.739791.6918334.564258e-08
0.7428861.6917134.658558e-08
0.7459951.6915954.753253e-08
0.7491171.6914774.848344e-08
0.7522521.691364.943833e-08
0.75541.6912445.039721e-08
0.7585611.6911295.136011e-08
0.7617361.6910155.232704e-08
0.7649231.6909015.329801e-08
0.7681251.6907885.427305e-08
0.7713391.6906755.525217e-08
0.7745671.6905645.623538e-08
0.7778091.6904535.722271e-08
0.7810641.6903435.821418e-08
0.7843321.6902335.920979e-08
0.7876151.6901256.020957e-08
0.7909111.6900176.121353e-08
0.7942211.6899096.222169e-08
0.7975441.6898026.323407e-08
0.81.6897246.398200e-08
0.8008821.6896966.373428e-08
0.8042341.6895916.279307e-08
0.8075991.6894866.184793e-08
0.8109791.6893826.089883e-08
0.8143731.6892785.994575e-08
0.8177811.6891755.898869e-08
0.8212041.6890735.802763e-08
0.824641.6889715.706254e-08
0.8280911.688875.609342e-08
0.8315571.688775.512023e-08
0.8350371.688675.414298e-08
0.8385311.688575.316163e-08
0.8420411.6884715.217618e-08
0.8455641.6883735.118661e-08
0.8491031.6882755.019289e-08
0.8526561.6881784.919502e-08
0.8562251.6880814.819296e-08
0.8598081.6879854.718672e-08
0.8634061.6878894.617626e-08
0.867021.6877944.516158e-08
0.8706481.6876994.414265e-08
0.8742921.6876054.311945e-08
0.877951.6875114.209198e-08
0.8816251.6874184.106020e-08
0.8853141.6873254.002410e-08
0.8890191.6872333.898367e-08
0.892741.6871413.793889e-08
0.8964761.6870493.688973e-08
0.91.6869643.590000e-08
0.9002271.6869583.594545e-08
0.9039951.6868683.669893e-08
0.9077781.6867783.745556e-08
0.9115771.6866883.821535e-08
0.9153921.6865993.897833e-08
0.9192231.686513.974450e-08
0.9230691.6864214.051388e-08
0.9269321.6863334.128647e-08
0.9308121.6862454.206230e-08
0.9347071.6861584.284138e-08
0.9386191.6860714.362371e-08
0.9425471.6859844.440932e-08
0.9464911.6858984.519822e-08
0.9504521.6858124.599042e-08
0.954431.6857264.678593e-08
0.9584241.6856414.758478e-08
0.9624351.6855564.838696e-08
0.9664631.6854714.919251e-08
0.9705071.6853875.000142e-08
0.9745691.6853035.081372e-08
0.9786471.6852195.162942e-08
0.9827431.6851365.244853e-08
0.9868551.6850535.327108e-08
0.9909851.684975.409706e-08
0.9951321.6848875.492650e-08
0.9992971.6848055.575941e-08
11.6847915.590000e-08
1.003481.6847235.576025e-08
1.007681.6846415.559155e-08
1.01191.6845595.542215e-08
1.016131.6844785.525205e-08
1.020381.6843975.508123e-08
1.024651.6843165.490969e-08
1.028941.6842365.473744e-08
1.033251.6841555.456446e-08
1.037571.6840755.439077e-08
1.041911.6839955.421634e-08
1.046271.6839155.404119e-08
1.050651.6838365.386530e-08
1.055051.6837565.368868e-08
1.059461.6836775.351131e-08
1.06391.6835985.333321e-08
1.068351.6835195.315436e-08
1.072821.6834415.297476e-08
1.077311.6833625.279441e-08
1.081821.6832845.261330e-08
1.086351.6832065.243144e-08
1.090891.6831285.224882e-08
1.095461.683055.206543e-08
1.100041.6829725.188127e-08
1.104651.6828945.169635e-08
1.109271.6828175.151065e-08
1.113911.6827395.132417e-08
1.118571.6826625.113691e-08
1.123251.6825855.094887e-08
1.127961.6825075.076004e-08
1.132681.682435.057042e-08
1.137421.6823535.038001e-08
1.142181.6822775.018880e-08
1.146961.68224.999679e-08
1.151761.6821234.980398e-08
1.156581.6820464.961036e-08
1.161421.681974.941593e-08
1.166281.6818934.922068e-08
1.171161.6818174.902462e-08
1.176061.681744.882774e-08
1.180981.6816644.863004e-08
1.185921.6815874.843150e-08
1.190891.6815114.823214e-08
1.195871.6814344.803194e-08
1.21.6813714.786600e-08
1.200871.6813584.794978e-08
1.20591.6812824.843174e-08
1.210951.6812054.891570e-08
1.216011.6811294.940170e-08
1.22111.6810524.988973e-08
1.226211.6809765.037980e-08
1.231341.6808995.087192e-08
1.23651.6808235.136610e-08
1.241671.6807465.186235e-08
1.246871.680675.236067e-08
1.252091.6805935.286109e-08
1.257331.6805165.336359e-08
1.262591.680445.386820e-08
1.267871.6803635.437492e-08
1.273181.6802865.488376e-08
1.278511.6802095.539473e-08
1.283861.6801325.590784e-08
1.289231.6800555.642310e-08
1.294621.6799785.694051e-08
1.300041.67995.746008e-08
1.305481.6798235.798184e-08
1.310951.6797455.850577e-08
1.316431.6796685.903190e-08
1.321941.679595.956023e-08
1.327471.6795126.009077e-08
1.333031.6794346.062353e-08
1.338611.6793566.115852e-08
1.344211.6792786.169575e-08
1.349841.6791996.223523e-08
1.355481.679126.277697e-08
1.361161.6790426.332097e-08
1.366851.6789636.386725e-08
1.372571.6788836.441581e-08
1.378321.6788046.496667e-08
1.384091.6787256.551984e-08
1.389881.6786456.607532e-08
1.395691.6785656.663313e-08
1.41.6785066.704600e-08
1.401541.6784856.761253e-08
1.40741.6784046.977636e-08
1.413291.6783247.194925e-08
1.419211.6782437.413124e-08
1.425141.6781627.632235e-08
1.431111.6780817.852264e-08
1.43711.6779998.073213e-08
1.443111.6779188.295087e-08
1.449151.6778368.517890e-08
1.455221.6777538.741625e-08
1.461311.6776718.966296e-08
1.467421.6775889.191907e-08
1.473561.6775059.418463e-08
1.479731.6774229.645967e-08
1.485921.6773389.874422e-08
1.492141.6772541.010383e-07
1.498381.677171.033421e-07
1.504661.6770851.056554e-07
1.510951.6771.079785e-07
1.517281.6769151.103112e-07
1.523631.6768291.126538e-07
1.531.6767441.150061e-07
1.53641.6766571.173683e-07
1.542831.6765711.197403e-07
1.549291.6764841.221223e-07
1.555771.6763961.245143e-07
1.562291.6763091.269162e-07
1.568821.6762211.293282e-07
1.575391.6761321.317504e-07
1.581981.6760431.341826e-07
1.58861.6759541.366250e-07
1.595251.6758651.390777e-07
1.61.67581.408300e-07
1.601931.6757751.422606e-07
1.608631.6756841.472400e-07
1.615361.6755931.522402e-07
1.622121.6755021.572613e-07
1.628911.675411.623034e-07
1.635731.6753181.673666e-07
1.642571.6752251.724511e-07
1.649451.6751321.775568e-07
1.656351.6750381.826838e-07
1.663281.6749441.878324e-07
1.670241.674851.930024e-07
1.677231.6747551.981941e-07
1.684251.6746592.034076e-07
1.69131.6745632.086428e-07
1.698381.6744662.139000e-07
1.705491.6743692.191791e-07
1.712621.6742722.244804e-07
1.719791.6741742.298038e-07
1.726991.6740752.351495e-07
1.734211.6739762.405176e-07
1.741471.6738762.459082e-07
1.748761.6737752.513213e-07
1.756081.6736742.567570e-07
1.763431.6735732.622156e-07
1.770811.6734712.676969e-07
1.778221.6733682.732012e-07
1.785661.6732652.787285e-07
1.793131.6731612.842790e-07
1.81.6730652.893800e-07
1.800641.6730562.902110e-07
1.808171.6729513.000509e-07
1.815741.6728453.099320e-07
1.823341.6727393.198544e-07
1.830971.6726323.298184e-07
1.838631.6725243.398240e-07
1.846331.6724153.498715e-07
1.854051.6723063.599611e-07
1.861811.6721963.700929e-07
1.86961.6720863.802671e-07
1.877431.6719743.904839e-07
1.885281.6718624.007434e-07
1.893171.671754.110459e-07
1.90111.6716364.213915e-07
1.909051.6715224.317803e-07
1.917041.6714074.422127e-07
1.925061.6712914.526887e-07
1.933121.6711754.632086e-07
1.941211.6710574.737724e-07
1.949331.6709394.843805e-07
1.957491.6708214.950330e-07
1.965681.6707015.057301e-07
1.973911.670585.164719e-07
1.982171.6704595.272587e-07
1.990471.6703375.380906e-07
1.99881.6702145.489678e-07
21.6701965.505400e-07
2.007161.670095.796975e-07
2.015561.6699656.138999e-07
2.0241.669846.482454e-07
2.032471.6697136.827347e-07
2.040971.6695867.173683e-07
2.049511.6694577.521468e-07
2.058091.6693287.870709e-07

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
—