Optical constants

Refractive index of J-LASFH6 (HIKARI)

J-LASFH6: n,k 0.365–2.058 µm

Data
formula 3 + tabulated k
Range
0.365–2.058 µm
Temperature
296 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.058 µm
Refractive index n
1.8061
Extinction coefficient k
2.45299e-08
Permittivity ε1
3.26198
Permittivity ε2
8.86068e-08
Absorption coefficient α
0.00524595 cm⁻¹
Penetration depth δ = λ/(2πk)
3.81246e+09 nm
Abbe number Vd
33.345
Chromatic dispersion dn/dλ
-0.122243 µm⁻¹
Group index ng
1.87793
Group velocity dispersion
240.587 fs²/mm
Dispersion parameter D
-1312.53 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-LASFH6 (HIKARI): J-LASFH6
hikari_j_lasfh6 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASFH6", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lasfh6.range_nm)  # (365.015, 2058.09) nm
eps = hikari_j_lasfh6.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=3.15462091−0.0134426083⁢λ2.0+0.0331718297⁢λ−2.0+0.00271221217⁢λ−4.0−0.000503803783⁢λ−6.0+0.000100437086⁢λ−8.0−9.19121981×10-6⁢λ−10.0+3.75808895×10-7⁢λ−12.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C13.15462091
C2-0.0134426083
C32.0
C40.0331718297
C5-2.0
C60.00271221217
C7-4.0
C8-0.000503803783
C9-6.0
C100.000100437086
C11-8.0
C12-9.19121981e-06
C13-10.0
C143.75808895e-07
C15-12.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 6.65589e-07 7.77982e-09 1.18319e-12 8.50922e-07 1.20835e-09 0.263888
nd
1.806100
Vd
33.344981
density
value: 3770
thermal expansion
value: 7.1e-06, temperature range: 243 343
dPgF
0.002
resistance
phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 2.02e-06 K⁻¹ at 633 nm, dn/dT = 7.17e-07 K⁻¹ at 1310 nm, dn/dT = 6.22e-07 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 421 wavelengths, the same grid as the API and the library
J-LASFH6 (HIKARI), J-LASFH6: n and k versus wavelength
λ (µm)nk
0.3650151.8731173.591573e-06
0.3666011.8719673.176402e-06
0.3681931.8708372.759428e-06
0.3697931.8697242.340642e-06
0.371.8695812.286400e-06
0.3713991.8686292.117393e-06
0.3730131.8675511.922521e-06
0.3746331.8664891.726803e-06
0.3762611.8654441.530234e-06
0.3778951.8644151.332811e-06
0.3795371.8634021.134531e-06
0.381.8631191.078600e-06
0.3811861.8624031.019276e-06
0.3828421.8614199.364253e-07
0.3845051.860458.532144e-07
0.3861751.8594947.696420e-07
0.3878531.8585536.857065e-07
0.3895381.8576256.014064e-07
0.391.8573735.782800e-07
0.391231.856715.527770e-07
0.392931.8558085.175376e-07
0.3946371.8549184.821451e-07
0.3963511.8540414.465988e-07
0.3980731.8531764.108982e-07
0.3998021.8523233.750424e-07
0.41.8522263.709400e-07
0.4015391.8514813.580365e-07
0.4032831.8506513.434107e-07
0.4050351.8498323.287214e-07
0.4067951.8490233.139683e-07
0.4085621.8482262.991511e-07
0.4103371.8474392.842696e-07
0.412121.8466622.693234e-07
0.413911.8458962.543122e-07
0.4157081.8451392.392359e-07
0.4175141.8443922.240940e-07
0.4193281.8436552.088864e-07
0.421.8433852.032500e-07
0.4211491.8429271.991558e-07
0.4229791.8422081.926388e-07
0.4248171.8414981.860936e-07
0.4266621.8407971.795199e-07
0.4285161.8401051.729177e-07
0.4303771.8394221.662868e-07
0.4322471.8387471.596270e-07
0.4341251.838081.529384e-07
0.436011.8374221.462207e-07
0.4379051.8367711.394738e-07
0.4398071.8361281.326976e-07
0.441.8360641.320100e-07
0.4417181.8354941.289547e-07
0.4436371.8348661.255414e-07
0.4455641.8342471.221131e-07
0.4474991.8336341.186700e-07
0.4494431.8330291.152120e-07
0.4513961.8324311.117389e-07
0.4533571.831841.082507e-07
0.4553261.8312561.047474e-07
0.4573041.8306791.012289e-07
0.4592911.8301099.769502e-08
0.461.8299079.643400e-08
0.4612861.8295459.494434e-08
0.463291.8289889.262368e-08
0.4653031.8284379.029294e-08
0.4673241.8278928.795208e-08
0.4693541.8273548.560105e-08
0.4713931.8268218.323980e-08
0.4734411.8262958.086829e-08
0.4754981.8257757.848649e-08
0.4775641.825267.609433e-08
0.4796381.8247517.369178e-08
0.481.8246647.327300e-08
0.4817221.8242487.179420e-08
0.4838151.8237516.999709e-08
0.4859171.8232596.819216e-08
0.4880271.8227726.637940e-08
0.4901481.8222916.455876e-08
0.4922771.8218156.273021e-08
0.4944151.8213446.089371e-08
0.4965631.8208795.904924e-08
0.4987211.8204185.719676e-08
0.51.8201485.609800e-08
0.5008871.8199625.557005e-08
0.5030631.8195125.427500e-08
0.5052481.8190665.297432e-08
0.5074431.8186255.166799e-08
0.5096481.8181885.035599e-08
0.5118621.8177564.903829e-08
0.5140861.8173294.771486e-08
0.5163191.8169064.638569e-08
0.5185621.8164884.505074e-08
0.5208151.8160744.370999e-08
0.5230771.8156644.236342e-08
0.5253491.8152594.101099e-08
0.5276321.8148583.965269e-08
0.5299241.8144613.828849e-08
0.5322261.8140683.691837e-08
0.5345381.8136793.554229e-08
0.536861.8132943.416023e-08
0.5391931.8129133.277217e-08
0.5415351.8125363.137808e-08
0.5438871.8121632.997794e-08
0.546251.8117932.857171e-08
0.5486231.8114272.715937e-08
0.551.8112182.634000e-08
0.5510071.8110652.629154e-08
0.55341.8107072.617631e-08
0.5558041.8103522.606057e-08
0.5582191.8100012.594434e-08
0.5606441.8096532.582760e-08
0.563081.8093082.571035e-08
0.5655261.8089672.559259e-08
0.5679821.8086292.547432e-08
0.570451.8082952.535554e-08
0.5729281.8079642.523624e-08
0.5754171.8076362.511642e-08
0.5779171.8073112.499609e-08
0.5804271.806992.487522e-08
0.5829491.8066712.475384e-08
0.5854811.8063562.463193e-08
0.5880251.8060432.450948e-08
0.5905791.8057342.438651e-08
0.5931451.8054282.426300e-08
0.5957221.8051242.413896e-08
0.598311.8048242.401437e-08
0.61.8046292.393300e-08
0.6009091.8045262.396926e-08
0.6035191.8042312.407342e-08
0.6061411.8039392.417803e-08
0.6087741.8036492.428310e-08
0.6114191.8033622.438862e-08
0.6140751.8030782.449460e-08
0.6167431.8027972.460104e-08
0.6194221.8025182.470795e-08
0.6221131.8022422.481531e-08
0.6248161.8019682.492315e-08
0.627531.8016972.503145e-08
0.6302561.8014282.514022e-08
0.6329941.8011612.524947e-08
0.6357441.8008982.535919e-08
0.6385061.8006362.546938e-08
0.641281.8003772.558006e-08
0.6440661.800122.569122e-08
0.6468641.7998662.580286e-08
0.6496741.7996132.591498e-08
0.651.7995842.592800e-08
0.6524961.7993632.602754e-08
0.6553311.7991162.614058e-08
0.6581781.798872.625412e-08
0.6610371.7986272.636815e-08
0.6639081.7983862.648267e-08
0.6667931.7981462.659769e-08
0.6696891.7979092.671321e-08
0.6725991.7976742.682923e-08
0.6755211.7974412.694576e-08
0.6784551.7972112.706279e-08
0.6814031.7969822.718033e-08
0.6843631.7967552.729839e-08
0.6873361.796532.741695e-08
0.6903221.7963072.753603e-08
0.6933211.7960852.765563e-08
0.6963331.7958662.777574e-08
0.6993581.7956492.789638e-08
0.71.7956032.792200e-08
0.7023961.7954332.878592e-08
0.7054471.7952192.988624e-08
0.7085121.7950073.099135e-08
0.711591.7947973.210125e-08
0.7146811.7945883.321598e-08
0.7177861.7943823.433555e-08
0.7209041.7941773.545998e-08
0.7240361.7939733.658930e-08
0.7271811.7937713.772353e-08
0.730341.7935713.886268e-08
0.7335131.7933734.000678e-08
0.73671.7931764.115585e-08
0.73991.7929814.230991e-08
0.7431141.7927874.346899e-08
0.7463421.7925954.463310e-08
0.7495851.7924044.580227e-08
0.7528411.7922154.697651e-08
0.7561121.7920274.815586e-08
0.7593961.7918414.934034e-08
0.7626951.7916565.052995e-08
0.7660091.7914735.172474e-08
0.7693361.7912915.292472e-08
0.7726791.791115.412990e-08
0.7760351.7909315.534033e-08
0.7794071.7907535.655601e-08
0.7827931.7905775.777698e-08
0.7861931.7904025.900325e-08
0.7896091.7902286.023484e-08
0.7930391.7900556.147179e-08
0.7964841.7898846.271411e-08
0.7999441.7897146.396182e-08
0.81.7897116.398200e-08
0.8034191.7895456.228458e-08
0.8069091.7893786.055188e-08
0.8104151.7892125.881166e-08
0.8139351.7890475.706388e-08
0.8174711.7888835.530850e-08
0.8210231.788725.354550e-08
0.8245891.7885585.177484e-08
0.8281721.7883984.999649e-08
0.8317691.7882384.821041e-08
0.8353831.788084.641657e-08
0.8390121.7879234.461494e-08
0.8426571.7877674.280549e-08
0.8463171.7876124.098817e-08
0.8499941.7874583.916296e-08
0.8536871.7873053.732982e-08
0.8573951.7871533.548871e-08
0.861121.7870023.363961e-08
0.8648611.7868533.178248e-08
0.8686181.7867042.991727e-08
0.8723911.7865562.804397e-08
0.8761811.7864092.616252e-08
0.8799881.7862632.427290e-08
0.8838111.7861172.237508e-08
0.887651.7859732.046901e-08
0.8915061.785831.855465e-08
0.8953791.7856871.663199e-08
0.8992691.7855461.470096e-08
0.91.7855191.433800e-08
0.9031751.7854051.489552e-08
0.9070991.7852651.558439e-08
0.911041.7851261.627625e-08
0.9149981.7849881.697112e-08
0.9189721.7848511.766900e-08
0.9229651.7847141.836992e-08
0.9269741.7845781.907388e-08
0.9310011.7844431.978090e-08
0.9350461.7843092.049099e-08
0.9391081.7841752.120416e-08
0.9431881.7840422.192044e-08
0.9472851.783912.263982e-08
0.95141.7837792.336233e-08
0.9555331.7836482.408798e-08
0.9596841.7835182.481678e-08
0.9638531.7833892.554875e-08
0.9680411.783262.628390e-08
0.9722461.7831322.702224e-08
0.976471.7830052.776379e-08
0.9807121.7828782.850856e-08
0.9849721.7827522.925656e-08
0.9892511.7826263.000782e-08
0.9935491.7825013.076234e-08
0.9978651.7823773.152013e-08
11.7823163.189500e-08
1.00221.7822533.185976e-08
1.006551.782133.179001e-08
1.010931.7820073.171996e-08
1.015321.7818853.164961e-08
1.019731.7817643.157894e-08
1.024161.7816433.150798e-08
1.028611.7815223.143670e-08
1.033081.7814023.136512e-08
1.037561.7812833.129322e-08
1.042071.7811643.122101e-08
1.04661.7810453.114849e-08
1.051151.7809273.107565e-08
1.055711.7808093.100250e-08
1.06031.7806923.092902e-08
1.06491.7805753.085523e-08
1.069531.7804593.078112e-08
1.074181.7803433.070669e-08
1.078841.7802273.063193e-08
1.083531.7801123.055685e-08
1.088241.7799973.048144e-08
1.092961.7798833.040571e-08
1.097711.7797693.032964e-08
1.102481.7796553.025325e-08
1.107271.7795413.017652e-08
1.112081.7794283.009946e-08
1.116911.7793163.002206e-08
1.121761.7792032.994433e-08
1.126641.7790912.986626e-08
1.131531.7789792.978786e-08
1.136451.7788682.970911e-08
1.141381.7787562.963002e-08
1.146341.7786452.955058e-08
1.151321.7785342.947080e-08
1.156321.7784242.939068e-08
1.161351.7783142.931020e-08
1.166391.7782042.922938e-08
1.171461.7780942.914821e-08
1.176551.7779842.906668e-08
1.181661.7778752.898480e-08
1.186791.7777652.890256e-08
1.191951.7776562.881997e-08
1.197131.7775472.873701e-08
1.21.7774872.869100e-08
1.202331.7774392.913754e-08
1.207551.777333.013922e-08
1.21281.7772223.114525e-08
1.218071.7771133.215565e-08
1.223361.7770053.317044e-08
1.228671.7768973.418964e-08
1.234011.7767893.521326e-08
1.239371.7766813.624134e-08
1.244751.7765733.727388e-08
1.250161.7764663.831090e-08
1.255591.7763583.935243e-08
1.261051.776254.039848e-08
1.266531.7761434.144908e-08
1.272031.7760354.250425e-08
1.277551.7759284.356399e-08
1.28311.7758214.462834e-08
1.288681.7757134.569732e-08
1.294281.7756064.677093e-08
1.29991.7754984.784922e-08
1.305551.7753914.893218e-08
1.311221.7752845.001985e-08
1.316911.7751765.111225e-08
1.322641.7750695.220939e-08
1.328381.7749615.331130e-08
1.334151.7748545.441799e-08
1.339951.7747465.552950e-08
1.345771.7746395.664583e-08
1.351621.7745315.776701e-08
1.357491.7744235.889306e-08
1.363381.7743156.002400e-08
1.369311.7742076.115986e-08
1.375261.7740996.230065e-08
1.381231.7739916.344640e-08
1.387231.7738826.459712e-08
1.393261.7737746.575285e-08
1.399311.7736656.691359e-08
1.41.7736536.704600e-08
1.405391.7735566.868717e-08
1.411491.7734477.054667e-08
1.417631.7733387.241425e-08
1.423781.7732297.428995e-08
1.429971.7731197.617379e-08
1.436181.7730097.806581e-08
1.442421.7728997.996606e-08
1.448691.7727898.187456e-08
1.454981.7726798.379135e-08
1.46131.7725688.571647e-08
1.467651.7724578.764995e-08
1.474031.7723468.959183e-08
1.480431.7722359.154215e-08
1.486861.7721239.350094e-08
1.493321.7720119.546824e-08
1.499811.7718999.744408e-08
1.506321.7717869.942851e-08
1.512871.7716731.014216e-07
1.519441.771561.034233e-07
1.526041.7714471.054337e-07
1.532671.7713331.074528e-07
1.539331.7712191.094807e-07
1.546011.7711041.115174e-07
1.552731.7709891.135630e-07
1.559481.7708741.156175e-07
1.566251.7707591.176808e-07
1.573051.7706431.197532e-07
1.579891.7705261.218345e-07
1.586751.7704091.239249e-07
1.593641.7702921.260244e-07
1.61.7701841.279600e-07
1.600571.7701741.282940e-07
1.607521.7700561.323839e-07
1.61451.7699381.364916e-07
1.621521.7698191.406171e-07
1.628561.7696991.447605e-07
1.635641.7695791.489220e-07
1.642741.7694591.531015e-07
1.649881.7693381.572992e-07
1.657051.7692171.615151e-07
1.664251.7690951.657493e-07
1.671481.7689731.700019e-07
1.678741.768851.742730e-07
1.686031.7687261.785626e-07
1.693351.7686021.828709e-07
1.700711.7684771.871979e-07
1.70811.7683521.915437e-07
1.715521.7682271.959083e-07
1.722971.76812.002920e-07
1.730461.7679732.046946e-07
1.737971.7678462.091164e-07
1.745521.7677182.135574e-07
1.753111.7675892.180177e-07
1.760721.767462.224974e-07
1.768371.767332.269966e-07
1.776051.7671992.315152e-07
1.783771.7670672.360536e-07
1.791521.7669352.406116e-07
1.79931.7668032.451894e-07
1.81.7667912.456000e-07
1.807121.7666692.541127e-07
1.814971.7665352.635008e-07
1.822851.76642.729297e-07
1.830771.7662652.823995e-07
1.838731.7661282.919104e-07
1.846711.7659913.014627e-07
1.854741.7658533.110565e-07
1.862791.7657153.206919e-07
1.870891.7655753.303693e-07
1.879011.7654353.400886e-07
1.887181.7652943.498502e-07
1.895371.7651523.596542e-07
1.903611.765013.695007e-07
1.911881.7648663.793901e-07
1.920181.7647223.893224e-07
1.928531.7645773.992978e-07
1.93691.7644314.093166e-07
1.945321.7642844.193790e-07
1.953771.7641364.294850e-07
1.962261.7639874.396349e-07
1.970781.7638374.498289e-07
1.979341.7636874.600673e-07
1.987941.7635354.703500e-07
1.996581.7633834.806775e-07
21.7633224.847700e-07
2.005251.7632295.063906e-07
2.013961.7630755.422563e-07
2.022711.7629195.782777e-07
2.03151.7627636.144557e-07
2.040321.7626066.507908e-07
2.049191.7624476.872838e-07
2.058091.7622887.239352e-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
—