Optical constants

Refractive index of J-LASFH23 (HIKARI)

J-LASFH23: 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
1.84999
Extinction coefficient k
4.55649e-08
Permittivity ε1
3.42248
Permittivity ε2
1.68590e-07
Absorption coefficient α
0.00974448 cm⁻¹
Penetration depth δ = λ/(2πk)
2.05244e+09 nm
Abbe number Vd
27.027
Chromatic dispersion dn/dλ
-0.157691 µm⁻¹
Group index ng
1.94265
Group velocity dispersion
323.371 fs²/mm
Dispersion parameter D
-1764.16 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-LASFH23 (HIKARI): J-LASFH23
hikari_j_lasfh23 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASFH23", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lasfh23.range_nm)  # (388.865, 2058.09) nm
eps = hikari_j_lasfh23.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=3.27710657−0.0120480934⁢λ2.0−0.000105066933⁢λ4.0+0.0470173769⁢λ−2.0+0.00095791266⁢λ−4.0+0.000282409939⁢λ−6.0−2.89931135×10-5⁢λ−8.0+2.51862401×10-6⁢λ−10.0

Valid from 0.388865 to 2.05809 µm.

Coefficients as stored
CiValue
C13.27710657
C2-0.0120480934
C32.0
C4-0.000105066933
C54.0
C60.0470173769
C7-2.0
C80.00095791266
C9-4.0
C100.000282409939
C11-6.0
C12-2.89931135e-05
C13-8.0
C142.51862401e-06
C15-10.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: -4.0072e-06 5.68857e-09 1.18399e-12 1.0748e-06 1.46694e-09 0.271814
nd
1.850000
Vd
27.027002
density
value: 3900
thermal expansion
value: 7.6e-06, temperature range: 243 343
dPgF
0.0103
resistance
phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = -4.67e-07 K⁻¹ at 633 nm, dn/dT = -2.11e-06 K⁻¹ at 1310 nm, dn/dT = -2.22e-06 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-LASFH23 (HIKARI), J-LASFH23: n and k versus wavelength
λ (µm)nk
0.3888651.9199437.670961e-07
0.391.9190696.925300e-07
0.3904921.9186936.802576e-07
0.3921271.9174636.395257e-07
0.3937681.9162515.986232e-07
0.3954151.9150575.575496e-07
0.397071.9138815.163041e-07
0.3987321.9127224.748860e-07
0.41.9118534.432800e-07
0.4004011.9115814.392592e-07
0.4020761.9104564.224415e-07
0.4037591.9093474.055535e-07
0.4054491.9082543.885948e-07
0.4071451.9071773.715652e-07
0.4088491.9061153.544642e-07
0.410561.9050683.372918e-07
0.4122781.9040363.200474e-07
0.4140041.9030183.027309e-07
0.4157361.9020142.853419e-07
0.4174761.9010242.678801e-07
0.4192231.9000482.503453e-07
0.421.8996192.425500e-07
0.4209781.8990842.387535e-07
0.4227391.8981342.319126e-07
0.4245091.8971962.250430e-07
0.4262851.8962712.181447e-07
0.4280691.8953582.112176e-07
0.4298611.8944572.042614e-07
0.431661.8935681.972762e-07
0.4334661.892691.902617e-07
0.435281.8918231.832178e-07
0.4371021.8909681.761445e-07
0.4389311.8901241.690415e-07
0.441.8896371.648900e-07
0.4407681.889291.634209e-07
0.4426121.8884671.598913e-07
0.4444651.8876541.563470e-07
0.4463251.8868511.527877e-07
0.4481931.8860591.492136e-07
0.4500681.8852761.456246e-07
0.4519521.8845031.420205e-07
0.4538431.8837391.384013e-07
0.4557421.8829841.347670e-07
0.457651.8822391.311175e-07
0.4595651.8815031.274527e-07
0.461.8813371.266200e-07
0.4614881.8807751.249779e-07
0.4634191.8800561.228467e-07
0.4653591.8793461.207066e-07
0.4673061.8786441.185576e-07
0.4692621.8779511.163995e-07
0.4712261.8772651.142324e-07
0.4731981.8765881.120563e-07
0.4751781.8759191.098710e-07
0.4771671.8752571.076766e-07
0.4791641.8746031.054730e-07
0.481.8743321.045500e-07
0.4811691.8739561.031377e-07
0.4831821.8733171.007046e-07
0.4852051.8726859.826136e-08
0.4872351.872069.580785e-08
0.4892741.8714439.334408e-08
0.4913221.8708329.086999e-08
0.4933781.8702288.838555e-08
0.4954431.8696318.589071e-08
0.4975161.8690418.338544e-08
0.4995981.8684578.086967e-08
0.51.8683468.038400e-08
0.5016891.867887.945362e-08
0.5037881.8673097.829699e-08
0.5058971.8667447.713552e-08
0.5080141.8661867.596919e-08
0.510141.8656337.479797e-08
0.5122751.8650877.362186e-08
0.5144191.8645467.244082e-08
0.5165711.8640127.125484e-08
0.5187331.8634837.006390e-08
0.5209041.8629596.886797e-08
0.5230841.8624426.766704e-08
0.5252731.861936.646108e-08
0.5274711.8614236.525008e-08
0.5296791.8609226.403400e-08
0.5318951.8604266.281284e-08
0.5341211.8599356.158657e-08
0.5363571.8594496.035517e-08
0.5386011.8589695.911861e-08
0.5408551.8584935.787688e-08
0.5431191.8580225.662995e-08
0.5453921.8575565.537780e-08
0.5476741.8570955.412041e-08
0.5499661.8566395.285777e-08
0.551.8566335.283900e-08
0.5522681.8561885.240033e-08
0.5545791.8557415.195320e-08
0.55691.8552985.150421e-08
0.559231.854865.105333e-08
0.561571.8544275.060057e-08
0.5639211.8539985.014592e-08
0.5662811.8535734.968936e-08
0.568651.8531534.923089e-08
0.571031.8527364.877050e-08
0.573421.8523244.830818e-08
0.575821.8519164.784393e-08
0.5782291.8515124.737774e-08
0.5806491.8511124.690960e-08
0.5830791.8507164.643949e-08
0.5855191.8503244.596742e-08
0.587971.8499364.549338e-08
0.590431.8495514.501735e-08
0.5929011.8491714.453933e-08
0.5953821.8487934.405930e-08
0.5978741.848424.357727e-08
0.61.8481064.316600e-08
0.6003761.848054.319307e-08
0.6028891.8476844.337387e-08
0.6054121.8473214.355543e-08
0.6079451.8469624.373775e-08
0.610491.8466064.392083e-08
0.6130441.8462544.410468e-08
0.615611.8459054.428929e-08
0.6181861.8455594.447468e-08
0.6207731.8452174.466085e-08
0.6233711.8448774.484779e-08
0.625981.8445414.503552e-08
0.62861.8442084.522403e-08
0.631231.8438784.541333e-08
0.6338721.8435524.560342e-08
0.6365251.8432284.579431e-08
0.6391881.8429074.598600e-08
0.6418631.8425894.617849e-08
0.644551.8422754.637179e-08
0.6472471.8419634.656589e-08
0.6499561.8416544.676081e-08
0.651.8416494.676400e-08
0.6526761.8413474.695649e-08
0.6554071.8410444.715298e-08
0.658151.8407434.735030e-08
0.6609041.8404454.754845e-08
0.663671.840154.774742e-08
0.6664471.8398574.794723e-08
0.6692361.8395674.814787e-08
0.6720371.8392794.834935e-08
0.674851.8389944.855168e-08
0.6776741.8387124.875485e-08
0.680511.8384324.895888e-08
0.6833581.8381544.916375e-08
0.6862171.8378794.936949e-08
0.6890891.8376074.957608e-08
0.6919731.8373364.978354e-08
0.6948691.8370694.999187e-08
0.6977771.8368035.020107e-08
0.71.8366025.036100e-08
0.7006971.836545.041114e-08
0.7036291.8362795.062210e-08
0.7065741.836025.083394e-08
0.7095311.8357635.104666e-08
0.71251.8355095.126027e-08
0.7154821.8352575.147478e-08
0.7184761.8350075.169019e-08
0.7214831.8347595.190649e-08
0.7245021.8345135.212371e-08
0.7275341.8342695.234183e-08
0.7305791.8340275.256086e-08
0.7336371.8337885.278081e-08
0.7367071.833555.300168e-08
0.739791.8333145.322348e-08
0.7428861.833085.344620e-08
0.7459951.8328485.366986e-08
0.7491171.8326185.389445e-08
0.7522521.832395.411998e-08
0.75541.8321635.434646e-08
0.7585611.8319395.457388e-08
0.7617361.8317165.480226e-08
0.7649231.8314955.503159e-08
0.7681251.8312765.526188e-08
0.7713391.8310595.549313e-08
0.7745671.8308435.572535e-08
0.7778091.8306295.595855e-08
0.7810641.8304175.619272e-08
0.7843321.8302065.642787e-08
0.7876151.8299975.666400e-08
0.7909111.829795.690112e-08
0.7942211.8295845.713924e-08
0.7975441.829385.737835e-08
0.81.829235.755500e-08
0.8008821.8291775.717376e-08
0.8042341.8289765.572529e-08
0.8075991.8287765.427075e-08
0.8109791.8285785.281013e-08
0.8143731.8283825.134339e-08
0.8177811.8281874.987052e-08
0.8212041.8279934.839148e-08
0.824641.8278014.690625e-08
0.8280911.827614.541480e-08
0.8315571.8274214.391712e-08
0.8350371.8272334.241317e-08
0.8385311.8270464.090292e-08
0.8420411.8268613.938635e-08
0.8455641.8266773.786344e-08
0.8491031.8264943.633415e-08
0.8526561.8263133.479846e-08
0.8562251.8261333.325635e-08
0.8598081.8259543.170778e-08
0.8634061.8257773.015273e-08
0.867021.82562.859117e-08
0.8706481.8254252.702308e-08
0.8742921.8252512.544843e-08
0.877951.8250792.386719e-08
0.8816251.8249072.227933e-08
0.8853141.8247372.068482e-08
0.8890191.8245681.908364e-08
0.892741.82441.747576e-08
0.8964761.8242331.586115e-08
0.91.8240771.433800e-08
0.9002271.8240671.439607e-08
0.9039951.8239021.535867e-08
0.9077781.8237381.632530e-08
0.9115771.8235761.729598e-08
0.9153921.8234141.827072e-08
0.9192231.8232541.924954e-08
0.9230691.8230942.023246e-08
0.9269321.8229362.121949e-08
0.9308121.8227782.221065e-08
0.9347071.8226222.320595e-08
0.9386191.8224662.420543e-08
0.9425471.8223112.520908e-08
0.9464911.8221582.621694e-08
0.9504521.8220052.722901e-08
0.954431.8218532.824532e-08
0.9584241.8217022.926589e-08
0.9624351.8215523.029072e-08
0.9664631.8214033.131984e-08
0.9705071.8212553.235327e-08
0.9745691.8211073.339103e-08
0.9786471.820963.443312e-08
0.9827431.8208153.547958e-08
0.9868551.820673.653042e-08
0.9909851.8205253.758565e-08
0.9951321.8203823.864530e-08
0.9992971.8202393.970939e-08
11.8202163.988900e-08
1.003481.8200983.952768e-08
1.007681.8199573.909155e-08
1.01191.8198163.865358e-08
1.016131.8196773.821379e-08
1.020381.8195383.777215e-08
1.024651.81943.732867e-08
1.028941.8192623.688333e-08
1.033251.8191253.643612e-08
1.037571.8189893.598705e-08
1.041911.8188543.553609e-08
1.046271.8187193.508325e-08
1.050651.8185853.462851e-08
1.055051.8184513.417187e-08
1.059461.8183183.371332e-08
1.06391.8181863.325285e-08
1.068351.8180543.279045e-08
1.072821.8179233.232612e-08
1.077311.8177933.185985e-08
1.081821.8176633.139162e-08
1.086351.8175333.092143e-08
1.090891.8174053.044928e-08
1.095461.8172762.997515e-08
1.100041.8171492.949903e-08
1.104651.8170212.902093e-08
1.109271.8168952.854082e-08
1.113911.8167682.805870e-08
1.118571.8166432.757457e-08
1.123251.8165172.708841e-08
1.127961.8163922.660021e-08
1.132681.8162682.610998e-08
1.137421.8161442.561769e-08
1.142181.8160212.512334e-08
1.146961.8158982.462692e-08
1.151761.8157752.412842e-08
1.156581.8156532.362784e-08
1.161421.8155312.312516e-08
1.166281.815412.262038e-08
1.171161.8152892.211349e-08
1.176061.8151682.160447e-08
1.180981.8150482.109333e-08
1.185921.8149282.058004e-08
1.190891.8148082.006461e-08
1.195871.8146891.954702e-08
1.21.8145911.911800e-08
1.200871.814571.908318e-08
1.20591.8144521.888286e-08
1.210951.8143331.868170e-08
1.216011.8142151.847970e-08
1.22111.8140981.827686e-08
1.226211.813981.807316e-08
1.231341.8138631.786862e-08
1.23651.8137461.766321e-08
1.241671.813631.745695e-08
1.246871.8135131.724983e-08
1.252091.8133971.704184e-08
1.257331.8132811.683297e-08
1.262591.8131661.662324e-08
1.267871.813051.641262e-08
1.273181.8129351.620113e-08
1.278511.812821.598875e-08
1.283861.8127051.577548e-08
1.289231.812591.556132e-08
1.294621.8124761.534626e-08
1.300041.8123611.513030e-08
1.305481.8122471.491344e-08
1.310951.8121331.469567e-08
1.316431.8120191.447699e-08
1.321941.8119051.425740e-08
1.327471.8117911.403688e-08
1.333031.8116781.381544e-08
1.338611.8115641.359308e-08
1.344211.8114511.336978e-08
1.349841.8113371.314555e-08
1.355481.8112241.292039e-08
1.361161.8111111.269428e-08
1.366851.8109981.246722e-08
1.372571.8108841.223921e-08
1.378321.8107711.201025e-08
1.384091.8106581.178034e-08
1.389881.8105451.154945e-08
1.395691.8104321.131761e-08
1.41.8103491.114600e-08
1.401541.8103191.184567e-08
1.40741.8102061.451803e-08
1.413291.8100931.720157e-08
1.419211.809981.989634e-08
1.425141.8098672.260239e-08
1.431111.8097532.531977e-08
1.43711.809642.804851e-08
1.443111.8095273.078868e-08
1.449151.8094133.354031e-08
1.455221.80933.630346e-08
1.461311.8091863.907818e-08
1.467421.8090734.186450e-08
1.473561.8089594.466249e-08
1.479731.8088454.747218e-08
1.485921.8087315.029363e-08
1.492141.8086175.312689e-08
1.498381.8085035.597201e-08
1.504661.8083895.882904e-08
1.510951.8082746.169802e-08
1.517281.8081596.457900e-08
1.523631.8080446.747205e-08
1.531.8079297.037720e-08
1.53641.8078147.329451e-08
1.542831.8076997.622402e-08
1.549291.8075837.916580e-08
1.555771.8074678.211989e-08
1.562291.8073518.508634e-08
1.568821.8072358.806521e-08
1.575391.8071189.105654e-08
1.581981.8070019.406039e-08
1.58861.8068849.707681e-08
1.595251.8067671.001059e-07
1.61.8066831.022700e-07
1.601931.8066491.039313e-07
1.608631.8065311.097134e-07
1.615361.8064131.155198e-07
1.622121.8062941.213504e-07
1.628911.8061751.272055e-07
1.635731.8060561.330850e-07
1.642571.8059371.389892e-07
1.649451.8058171.449180e-07
1.656351.8056971.508717e-07
1.663281.8055761.568503e-07
1.670241.8054551.628539e-07
1.677231.8053341.688827e-07
1.684251.8052121.749366e-07
1.69131.805091.810159e-07
1.698381.8049671.871207e-07
1.705491.8048441.932510e-07
1.712621.8047211.994069e-07
1.719791.8045972.055886e-07
1.726991.8044732.117962e-07
1.734211.8043482.180298e-07
1.741471.8042232.242894e-07
1.748761.8040972.305753e-07
1.756081.8039712.368874e-07
1.763431.8038442.432260e-07
1.770811.8037172.495911e-07
1.778221.8035892.559828e-07
1.785661.8034612.624013e-07
1.793131.8033322.688466e-07
1.81.8032132.747700e-07
1.800641.8032022.753860e-07
1.808171.8030732.826804e-07
1.815741.8029422.900054e-07
1.823341.8028112.973609e-07
1.830971.8026793.047473e-07
1.838631.8025473.121646e-07
1.846331.8024143.196129e-07
1.854051.8022813.270923e-07
1.861811.8021463.346031e-07
1.86961.8020123.421453e-07
1.877431.8018763.497191e-07
1.885281.801743.573246e-07
1.893171.8016033.649619e-07
1.90111.8014663.726311e-07
1.909051.8013283.803325e-07
1.917041.8011893.880661e-07
1.925061.8010493.958320e-07
1.933121.8009094.036305e-07
1.941211.8007674.114616e-07
1.949331.8006264.193254e-07
1.957491.8004834.272222e-07
1.965681.800344.351520e-07
1.973911.8001954.431150e-07
1.982171.800054.511114e-07
1.990471.7999044.591412e-07
1.99881.7997584.672045e-07
21.7997374.683700e-07
2.007161.799614.870601e-07
2.015561.7994625.089841e-07
2.0241.7993135.309998e-07
2.032471.7991635.531076e-07
2.040971.7990125.753080e-07
2.049511.798865.976012e-07
2.058091.7987076.199878e-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
—