Optical constants

Refractive index of J-LASFH24 (HIKARI)

J-LASFH24: 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
1.90199
Extinction coefficient k
5.72219e-08
Permittivity ε1
3.61758
Permittivity ε2
2.17671e-07
Absorption coefficient α
0.0122374 cm⁻¹
Penetration depth δ = λ/(2πk)
1.63433e+09 nm
Abbe number Vd
25.263
Chromatic dispersion dn/dλ
-0.178487 µm⁻¹
Group index ng
2.00687
Group velocity dispersion
370.266 fs²/mm
Dispersion parameter D
-2020 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-LASFH24 (HIKARI): J-LASFH24
hikari_j_lasfh24 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASFH24", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lasfh24.range_nm)  # (388.865, 2058.09) nm
eps = hikari_j_lasfh24.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=3.45215485−0.0140748042⁢λ2.0+0.0502420375⁢λ−2.0+0.00357942817⁢λ−4.0−0.000494644665⁢λ−6.0+0.000129480898⁢λ−8.0−1.35467075×10-5⁢λ−10.0+6.96875364×10-7⁢λ−12.0

Valid from 0.388865 to 2.05809 µm.

Coefficients as stored
CiValue
C13.45215485
C2-0.0140748042
C32.0
C40.0502420375
C5-2.0
C60.00357942817
C7-4.0
C8-0.000494644665
C9-6.0
C100.000129480898
C11-8.0
C12-1.35467075e-05
C13-10.0
C146.96875364e-07
C15-12.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: -3.8315e-06 9.6446e-09 -1.0727e-12 1.0692e-06 1.6653e-09 0.28647
nd
1.902000
Vd
25.263033
density
value: 4100
thermal expansion
value: 7.7e-06, temperature range: 243 343
dPgF
0.0146

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = -3.25e-07 K⁻¹ at 633 nm, dn/dT = -2.10e-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-LASFH24 (HIKARI), J-LASFH24: n and k versus wavelength
λ (µm)nk
0.3888651.9825121.756104e-06
0.391.9814861.585400e-06
0.3904921.9810451.556665e-06
0.3921271.9796021.461294e-06
0.3937681.9781831.365524e-06
0.3954151.9767851.269354e-06
0.397071.975411.172780e-06
0.3987321.9740571.075803e-06
0.41.9730411.001800e-06
0.4004011.9727249.918304e-07
0.4020761.9714119.501310e-07
0.4037591.9701199.082572e-07
0.4054491.9688468.662081e-07
0.4071451.9675918.239831e-07
0.4088491.9663567.815814e-07
0.410561.9651387.390022e-07
0.4122781.9639396.962448e-07
0.4140041.9627566.533085e-07
0.4157361.9615916.101925e-07
0.4174761.9604425.668960e-07
0.4192231.959315.234184e-07
0.421.9588135.040900e-07
0.4209781.9581934.939055e-07
0.4227391.9570924.755541e-07
0.4245091.9560074.571260e-07
0.4262851.9549364.386206e-07
0.4280691.953884.200379e-07
0.4298611.9528384.013774e-07
0.431661.951813.826388e-07
0.4334661.9507963.638218e-07
0.435281.9497963.449260e-07
0.4371021.9488093.259511e-07
0.4389311.9478353.068969e-07
0.441.9472732.957600e-07
0.4407681.9468732.922073e-07
0.4426121.9459242.836715e-07
0.4444651.9449882.751000e-07
0.4463251.9440632.664926e-07
0.4481931.9431512.578492e-07
0.4500681.942252.491696e-07
0.4519521.941362.404537e-07
0.4538431.9404822.317013e-07
0.4557421.9396142.229123e-07
0.457651.9387582.140865e-07
0.4595651.9379122.052238e-07
0.461.9377222.032100e-07
0.4614881.9370771.996922e-07
0.4634191.9362521.951266e-07
0.4653591.9354361.905419e-07
0.4673061.9346311.859381e-07
0.4692621.9338361.813149e-07
0.4712261.933051.766725e-07
0.4731981.9322741.720105e-07
0.4751781.9315071.673291e-07
0.4771671.9307491.626281e-07
0.4791641.9300011.579074e-07
0.481.929691.559300e-07
0.4811691.9292611.538998e-07
0.4831821.9285291.504021e-07
0.4852051.9278071.468897e-07
0.4872351.9270921.433627e-07
0.4892741.9263861.398208e-07
0.4913221.9256881.362642e-07
0.4933781.9249991.326927e-07
0.4954431.9243171.291062e-07
0.4975161.9236431.255047e-07
0.4995981.9229761.218882e-07
0.51.9228491.211900e-07
0.5016891.9223171.194810e-07
0.5037881.9216661.173565e-07
0.5058971.9210221.152230e-07
0.5080141.9203851.130807e-07
0.510141.9197551.109293e-07
0.5122751.9191331.087690e-07
0.5144191.9185171.065996e-07
0.5165711.9179081.044211e-07
0.5187331.9173061.022335e-07
0.5209041.916711.000368e-07
0.5230841.9161219.783086e-08
0.5252731.9155389.561570e-08
0.5274711.9149619.339127e-08
0.5296791.9143919.115753e-08
0.5318951.9138278.891444e-08
0.5341211.9132698.666196e-08
0.5363571.9127178.440006e-08
0.5386011.9121718.212869e-08
0.5408551.911637.984782e-08
0.5431191.9110967.755740e-08
0.5453921.9105677.525740e-08
0.5476741.9100437.294777e-08
0.5499661.9095257.062847e-08
0.551.9095187.059400e-08
0.5522681.9090136.978759e-08
0.5545791.9085066.896563e-08
0.55691.9080046.814024e-08
0.559231.9075076.731139e-08
0.561571.9070166.647907e-08
0.5639211.9065296.564327e-08
0.5662811.9060476.480397e-08
0.568651.9055716.396116e-08
0.571031.9050996.311482e-08
0.573421.9046326.226494e-08
0.575821.904176.141151e-08
0.5782291.9037126.055450e-08
0.5806491.9032595.969390e-08
0.5830791.9028115.882971e-08
0.5855191.9023675.796189e-08
0.587971.9019275.709045e-08
0.590431.9014925.621536e-08
0.5929011.9010615.533660e-08
0.5953821.9006355.445417e-08
0.5978741.9002125.356805e-08
0.61.8998575.281200e-08
0.6003761.8997945.284511e-08
0.6028891.899385.306626e-08
0.6054121.898975.328834e-08
0.6079451.8985645.351135e-08
0.610491.8981615.373529e-08
0.6130441.8977635.396017e-08
0.615611.8973695.418599e-08
0.6181861.8969785.441275e-08
0.6207731.8965915.464047e-08
0.6233711.8962085.486913e-08
0.625981.8958285.509876e-08
0.62861.8954525.532934e-08
0.631231.895085.556089e-08
0.6338721.8947115.579341e-08
0.6365251.8943465.602690e-08
0.6391881.8939845.626137e-08
0.6418631.8936255.649682e-08
0.644551.893275.673325e-08
0.6472471.8929185.697068e-08
0.6499561.8925695.720909e-08
0.651.8925645.721300e-08
0.6526761.8922245.714729e-08
0.6554071.8918825.708020e-08
0.658151.8915435.701284e-08
0.6609041.8912075.694519e-08
0.663671.8908745.687726e-08
0.6664471.8905445.680905e-08
0.6692361.8902175.674055e-08
0.6720371.8898935.667177e-08
0.674851.8895725.660269e-08
0.6776741.8892545.653333e-08
0.680511.8889395.646368e-08
0.6833581.8886265.639374e-08
0.6862171.8883175.632350e-08
0.6890891.888015.625297e-08
0.6919731.8877055.618214e-08
0.6948691.8874045.611102e-08
0.6977771.8871055.603960e-08
0.71.8868795.598500e-08
0.7006971.8868095.599594e-08
0.7036291.8865155.604198e-08
0.7065741.8862245.608821e-08
0.7095311.8859365.613464e-08
0.71251.885655.618126e-08
0.7154821.8853665.622807e-08
0.7184761.8850855.627508e-08
0.7214831.8848065.632228e-08
0.7245021.884535.636969e-08
0.7275341.8842565.641729e-08
0.7305791.8839855.646509e-08
0.7336371.8837155.651309e-08
0.7367071.8834485.656130e-08
0.739791.8831835.660970e-08
0.7428861.8829215.665831e-08
0.7459951.882665.670712e-08
0.7491171.8824025.675613e-08
0.7522521.8821465.680535e-08
0.75541.8818925.685478e-08
0.7585611.881645.690441e-08
0.7617361.8813915.695425e-08
0.7649231.8811435.700430e-08
0.7681251.8808975.705456e-08
0.7713391.8806535.710502e-08
0.7745671.8804125.715570e-08
0.7778091.8801725.720659e-08
0.7810641.8799345.725770e-08
0.7843321.8796985.730902e-08
0.7876151.8794645.736055e-08
0.7909111.8792315.741230e-08
0.7942211.8790015.746427e-08
0.7975441.8787725.751645e-08
0.81.8786055.755500e-08
0.8008821.8785465.730050e-08
0.8042341.8783215.633355e-08
0.8075991.8780975.536256e-08
0.8109791.8778765.438751e-08
0.8143731.8776565.340837e-08
0.8177811.8774385.242513e-08
0.8212041.8772215.143779e-08
0.824641.8770065.044630e-08
0.8280911.8767934.945067e-08
0.8315571.8765814.845088e-08
0.8350371.8763714.744690e-08
0.8385311.8761634.643871e-08
0.8420411.8759564.542631e-08
0.8455641.875754.440967e-08
0.8491031.8755464.338878e-08
0.8526561.8753444.236361e-08
0.8562251.8751434.133416e-08
0.8598081.8749434.030039e-08
0.8634061.8747453.926230e-08
0.867021.8745493.821987e-08
0.8706481.8743543.717307e-08
0.8742921.874163.612189e-08
0.877951.8739673.506632e-08
0.8816251.8737763.400632e-08
0.8853141.8735863.294189e-08
0.8890191.8733983.187301e-08
0.892741.873213.079965e-08
0.8964761.8730252.972180e-08
0.91.8728512.870500e-08
0.9002271.872842.873042e-08
0.9039951.8726562.915176e-08
0.9077781.8724742.957487e-08
0.9115771.8722932.999975e-08
0.9153921.8721133.042640e-08
0.9192231.8719353.085484e-08
0.9230691.8717573.128508e-08
0.9269321.8715813.171711e-08
0.9308121.8714063.215096e-08
0.9347071.8712323.258662e-08
0.9386191.8710593.302410e-08
0.9425471.8708873.346341e-08
0.9464911.8707173.390456e-08
0.9504521.8705473.434756e-08
0.954431.8703783.479241e-08
0.9584241.8702113.523913e-08
0.9624351.8700443.568771e-08
0.9664631.8698783.613817e-08
0.9705071.8697143.659051e-08
0.9745691.869553.704475e-08
0.9786471.8693883.750089e-08
0.9827431.8692263.795894e-08
0.9868551.8690653.841891e-08
0.9909851.8689053.888080e-08
0.9951321.8687463.934462e-08
0.9992971.8685883.981038e-08
11.8685623.988900e-08
1.003481.8684313.936132e-08
1.007681.8682753.872436e-08
1.01191.868123.808474e-08
1.016131.8679653.744245e-08
1.020381.8678113.679746e-08
1.024651.8676583.614978e-08
1.028941.8675063.549938e-08
1.033251.8673553.484626e-08
1.037571.8672043.419041e-08
1.041911.8670543.353182e-08
1.046271.8669053.287047e-08
1.050651.8667573.220635e-08
1.055051.8666093.153945e-08
1.059461.8664633.086976e-08
1.06391.8663163.019727e-08
1.068351.8661712.952197e-08
1.072821.8660262.884383e-08
1.077311.8658822.816286e-08
1.081821.8657392.747904e-08
1.086351.8655962.679236e-08
1.090891.8654532.610281e-08
1.095461.8653122.541037e-08
1.100041.8651712.471503e-08
1.104651.8650312.401678e-08
1.109271.8648912.331561e-08
1.113911.8647522.261150e-08
1.118571.8646132.190445e-08
1.123251.8644752.119444e-08
1.127961.8643372.048146e-08
1.132681.86421.976549e-08
1.137421.8640641.904653e-08
1.142181.8639281.832456e-08
1.146961.8637931.759957e-08
1.151761.8636581.687154e-08
1.156581.8635231.614047e-08
1.161421.8633891.540634e-08
1.166281.8632551.466913e-08
1.171161.8631221.392884e-08
1.176061.862991.318545e-08
1.180981.8628571.243896e-08
1.185921.8627251.168933e-08
1.190891.8625941.093657e-08
1.195871.8624631.018066e-08
1.21.8623559.554100e-09
1.200871.8623329.561054e-09
1.20591.8622029.601055e-09
1.210951.8620729.641223e-09
1.216011.8619429.681560e-09
1.22111.8618139.722065e-09
1.226211.8616849.762740e-09
1.231341.8615569.803585e-09
1.23651.8614279.844601e-09
1.241671.8612999.885789e-09
1.246871.8611729.927149e-09
1.252091.8610449.968682e-09
1.257331.8609171.001039e-08
1.262591.860791.005227e-08
1.267871.8606641.009433e-08
1.273181.8605371.013656e-08
1.278511.8604111.017897e-08
1.283861.8602851.022156e-08
1.289231.8601591.026432e-08
1.294621.8600341.030727e-08
1.300041.8599081.035039e-08
1.305481.8597831.039369e-08
1.310951.8596581.043718e-08
1.316431.8595341.048085e-08
1.321941.8594091.052470e-08
1.327471.8592841.056873e-08
1.333031.859161.061295e-08
1.338611.8590361.065735e-08
1.344211.8589121.070194e-08
1.349841.8587881.074672e-08
1.355481.8586641.079168e-08
1.361161.858541.083683e-08
1.366851.8584161.088217e-08
1.372571.8582931.092770e-08
1.378321.8581691.097342e-08
1.384091.8580451.101933e-08
1.389881.8579221.106544e-08
1.395691.8577981.111173e-08
1.41.8577071.114600e-08
1.401541.8576751.184567e-08
1.40741.8575511.451803e-08
1.413291.8574281.720157e-08
1.419211.8573051.989634e-08
1.425141.8571812.260239e-08
1.431111.8570582.531977e-08
1.43711.8569342.804851e-08
1.443111.856813.078868e-08
1.449151.8566873.354031e-08
1.455221.8565633.630346e-08
1.461311.8564393.907818e-08
1.467421.8563164.186450e-08
1.473561.8561924.466249e-08
1.479731.8560684.747218e-08
1.485921.8559445.029363e-08
1.492141.8558195.312689e-08
1.498381.8556955.597201e-08
1.504661.8555715.882904e-08
1.510951.8554466.169802e-08
1.517281.8553216.457900e-08
1.523631.8551966.747205e-08
1.531.8550717.037720e-08
1.53641.8549467.329451e-08
1.542831.854827.622402e-08
1.549291.8546957.916580e-08
1.555771.8545698.211989e-08
1.562291.8544438.508634e-08
1.568821.8543168.806521e-08
1.575391.854199.105654e-08
1.581981.8540639.406039e-08
1.58861.8539369.707681e-08
1.595251.8538081.001059e-07
1.61.8537181.022700e-07
1.601931.8536811.036504e-07
1.608631.8535531.084547e-07
1.615361.8534251.132792e-07
1.622121.8532961.181239e-07
1.628911.8531671.229888e-07
1.635731.8530381.278742e-07
1.642571.8529091.327799e-07
1.649451.8527791.377062e-07
1.656351.8526491.426531e-07
1.663281.8525181.476207e-07
1.670241.8523871.526091e-07
1.677231.8522561.576184e-07
1.684251.8521251.626486e-07
1.69131.8519931.676999e-07
1.698381.851861.727723e-07
1.705491.8517271.778660e-07
1.712621.8515941.829809e-07
1.719791.851461.881173e-07
1.726991.8513261.932752e-07
1.734211.8511911.984546e-07
1.741471.8510562.036558e-07
1.748761.8509212.088786e-07
1.756081.8507852.141234e-07
1.763431.8506482.193901e-07
1.770811.8505112.246788e-07
1.778221.8503742.299897e-07
1.785661.8502352.353228e-07
1.793131.8500972.406782e-07
1.81.8499692.456000e-07
1.800641.8499582.459451e-07
1.808171.8498182.500312e-07
1.815741.8496782.541345e-07
1.823341.8495372.582549e-07
1.830971.8493952.623925e-07
1.838631.8492532.665475e-07
1.846331.8491112.707199e-07
1.854051.8489672.749097e-07
1.861811.8488232.791171e-07
1.86961.8486792.833420e-07
1.877431.8485342.875847e-07
1.885281.8483882.918451e-07
1.893171.8482412.961233e-07
1.90111.8480943.004194e-07
1.909051.8479463.047335e-07
1.917041.8477983.090657e-07
1.925061.8476483.134160e-07
1.933121.8474983.177845e-07
1.941211.8473483.221713e-07
1.949331.8471963.265764e-07
1.957491.8470443.310000e-07
1.965681.8468913.354421e-07
1.973911.8467373.399028e-07
1.982171.8465823.443821e-07
1.990471.8464273.488802e-07
1.99881.8462713.533971e-07
21.8462483.540500e-07
2.007161.8461143.689238e-07
2.015561.8459563.863710e-07
2.0241.8457974.038913e-07
2.032471.8456384.214849e-07
2.040971.8454774.391522e-07
2.049511.8453164.568933e-07
2.058091.8451544.747087e-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
—