Optical constants

Refractive index of J-LASFH15 (HIKARI)

J-LASFH15: 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
1.94999
Extinction coefficient k
4.44668e-08
Permittivity ε1
3.80248
Permittivity ε2
1.73420e-07
Absorption coefficient α
0.00950963 cm⁻¹
Penetration depth δ = λ/(2πk)
2.10313e+09 nm
Abbe number Vd
29.366
Chromatic dispersion dn/dλ
-0.162842 µm⁻¹
Group index ng
2.04568
Group velocity dispersion
328.137 fs²/mm
Dispersion parameter D
-1790.16 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-LASFH15 (HIKARI): J-LASFH15
hikari_j_lasfh15 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASFH15", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lasfh15.range_nm)  # (388.865, 2058.09) nm
eps = hikari_j_lasfh15.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=3.64640666−0.0151039558⁢λ2.0+0.0480157444⁢λ−2.0+0.00349072452⁢λ−4.0−0.000573639028⁢λ−6.0+0.000130249514⁢λ−8.0−1.29576789×10-5⁢λ−10.0+5.92144355×10-7⁢λ−12.0

Valid from 0.388865 to 2.05809 µm.

Coefficients as stored
CiValue
C13.64640666
C2-0.0151039558
C32.0
C40.0480157444
C5-2.0
C60.00349072452
C7-4.0
C8-0.000573639028
C9-6.0
C100.000130249514
C11-8.0
C12-1.29576789e-05
C13-10.0
C145.92144355e-07
C15-12.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: -5.7421e-07 1.1589e-08 -1.3886e-12 1.018e-06 1.3557e-09 0.26662
nd
1.950000
Vd
29.366344
density
value: 4790
thermal expansion
value: 7.4e-06, temperature range: 243 343
dPgF
0.005
resistance
phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 1.80e-06 K⁻¹ at 633 nm, dn/dT = 3.09e-08 K⁻¹ at 1310 nm, dn/dT = -9.50e-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-LASFH15 (HIKARI), J-LASFH15: n and k versus wavelength
λ (µm)nk
0.3888652.0206831.839966e-06
0.392.019821.690600e-06
0.3904922.0194491.658847e-06
0.3921272.0182331.553459e-06
0.3937682.0170341.447629e-06
0.3954152.0158521.341357e-06
0.397072.0146871.234640e-06
0.3987322.0135381.127476e-06
0.42.0126751.045700e-06
0.4004012.0124051.034851e-06
0.4020762.0112889.894736e-07
0.4037592.0101869.439064e-07
0.4054492.0090998.981484e-07
0.4071452.0080278.521990e-07
0.4088492.0069698.060572e-07
0.410562.0059267.597224e-07
0.4122782.0048967.131936e-07
0.4140042.003886.664701e-07
0.4157362.0028776.195511e-07
0.4174762.0018875.724358e-07
0.4192232.000915.251232e-07
0.422.0004815.040900e-07
0.4209781.9999454.935335e-07
0.4227391.9989934.745118e-07
0.4245091.9980534.554104e-07
0.4262851.9971244.362291e-07
0.4280691.9962084.169676e-07
0.4298611.9953033.976254e-07
0.431661.9944093.782023e-07
0.4334661.9935263.586980e-07
0.435281.9926543.391120e-07
0.4371021.9917933.194440e-07
0.4389311.9909422.996937e-07
0.441.9904512.881500e-07
0.4407681.9901022.845927e-07
0.4426121.9892712.760458e-07
0.4444651.9884512.674632e-07
0.4463251.987642.588447e-07
0.4481931.986842.501900e-07
0.4500681.9860482.414992e-07
0.4519521.9852662.327720e-07
0.4538431.9844932.240083e-07
0.4557421.983732.152079e-07
0.457651.9829752.063706e-07
0.4595651.9822291.974964e-07
0.461.9820611.954800e-07
0.4614881.9814911.913558e-07
0.4634191.9807621.860032e-07
0.4653591.9800421.806283e-07
0.4673061.9793291.752308e-07
0.4692621.9786251.698107e-07
0.4712261.9779281.643680e-07
0.4731981.977241.589025e-07
0.4751781.9765591.534141e-07
0.4771671.9758861.479027e-07
0.4791641.9752211.423683e-07
0.481.9749451.400500e-07
0.4811691.9745621.377527e-07
0.4831821.9739121.337949e-07
0.4852051.9732681.298205e-07
0.4872351.9726311.258295e-07
0.4892741.9720021.218217e-07
0.4913221.9713791.177972e-07
0.4933781.9707631.137558e-07
0.4954431.9701541.096976e-07
0.4975161.9695511.056223e-07
0.4995981.9689551.015300e-07
0.51.9688411.007400e-07
0.5016891.9683659.897250e-08
0.5037881.9677819.677517e-08
0.5058971.9672049.456865e-08
0.5080141.9666339.235289e-08
0.510141.9660689.012786e-08
0.5122751.9655098.789352e-08
0.5144191.9649558.564983e-08
0.5165711.9644088.339675e-08
0.5187331.9638668.113424e-08
0.5209041.963337.886226e-08
0.5230841.96287.658077e-08
0.5252731.9622757.428974e-08
0.5274711.9617557.198912e-08
0.5296791.9612416.967887e-08
0.5318951.9607326.735895e-08
0.5341211.9602286.502932e-08
0.5363571.959736.268994e-08
0.5386011.9592366.034078e-08
0.5408551.9587475.798178e-08
0.5431191.9582645.561291e-08
0.5453921.9577855.323412e-08
0.5476741.9573115.084539e-08
0.5499661.9568424.844665e-08
0.551.9568354.841100e-08
0.5522681.9563784.817314e-08
0.5545791.9559184.793069e-08
0.55691.9554624.768723e-08
0.559231.9550124.744276e-08
0.561571.9545654.719726e-08
0.5639211.9541234.695073e-08
0.5662811.9536864.670317e-08
0.568651.9532524.645457e-08
0.571031.9528234.620493e-08
0.573421.9523984.595425e-08
0.575821.9519784.570252e-08
0.5782291.9515614.544974e-08
0.5806491.9511484.519589e-08
0.5830791.9507394.494099e-08
0.5855191.9503354.468502e-08
0.587971.9499344.442798e-08
0.590431.9495374.416986e-08
0.5929011.9491434.391066e-08
0.5953821.9487544.365038e-08
0.5978741.9483684.338901e-08
0.61.9480434.316600e-08
0.6003761.9479854.315382e-08
0.6028891.9476074.307246e-08
0.6054121.9472324.299077e-08
0.6079451.946864.290873e-08
0.610491.9464924.282635e-08
0.6130441.9461274.274362e-08
0.615611.9457664.266055e-08
0.6181861.9454084.257713e-08
0.6207731.9450534.249336e-08
0.6233711.9447014.240924e-08
0.625981.9443534.232477e-08
0.62861.9440084.223994e-08
0.631231.9436664.215476e-08
0.6338721.9433274.206923e-08
0.6365251.9429924.198333e-08
0.6391881.9426594.189708e-08
0.6418631.9423294.181046e-08
0.644551.9420034.172349e-08
0.6472471.9416794.163614e-08
0.6499561.9413584.154844e-08
0.651.9413534.154700e-08
0.6526761.941044.171803e-08
0.6554071.9407254.189262e-08
0.658151.9404124.206794e-08
0.6609041.9401034.224400e-08
0.663671.9397964.242079e-08
0.6664471.9394914.259832e-08
0.6692361.939194.277659e-08
0.6720371.9388914.295562e-08
0.674851.9385954.313539e-08
0.6776741.9383014.331591e-08
0.680511.938014.349719e-08
0.6833581.9377214.367922e-08
0.6862171.9374354.386202e-08
0.6890891.9371514.404559e-08
0.6919731.936874.422992e-08
0.6948691.9365914.441502e-08
0.6977771.9363144.460090e-08
0.71.9361054.474300e-08
0.7006971.936044.492195e-08
0.7036291.9357684.567477e-08
0.7065741.9354994.643075e-08
0.7095311.9352314.718989e-08
0.71251.9349664.795221e-08
0.7154821.9347034.871772e-08
0.7184761.9344424.948643e-08
0.7214831.9341845.025836e-08
0.7245021.9339285.103351e-08
0.7275341.9336735.181192e-08
0.7305791.9334215.259358e-08
0.7336371.9331715.337851e-08
0.7367071.9329235.416673e-08
0.739791.9326775.495824e-08
0.7428861.9324335.575307e-08
0.7459951.932195.655122e-08
0.7491171.931955.735271e-08
0.7522521.9317125.815756e-08
0.75541.9314765.896578e-08
0.7585611.9312415.977738e-08
0.7617361.9310086.059237e-08
0.7649231.9307786.141078e-08
0.7681251.9305496.223261e-08
0.7713391.9303216.305788e-08
0.7745671.9300966.388660e-08
0.7778091.9298726.471880e-08
0.7810641.929656.555447e-08
0.7843321.929436.639364e-08
0.7876151.9292116.723633e-08
0.7909111.9289956.808254e-08
0.7942211.9287796.893229e-08
0.7975441.9285666.978559e-08
0.81.9284097.041600e-08
0.8008821.9283546.998465e-08
0.8042341.9281436.834577e-08
0.8075991.9279346.670003e-08
0.8109791.9277276.504740e-08
0.8143731.9275216.338786e-08
0.8177811.9273176.172137e-08
0.8212041.9271146.004790e-08
0.824641.9269135.836744e-08
0.8280911.9267135.667994e-08
0.8315571.9265155.498538e-08
0.8350371.9263185.328373e-08
0.8385311.9261225.157495e-08
0.8420411.9259284.985903e-08
0.8455641.9257354.813592e-08
0.8491031.9255444.640561e-08
0.8526561.9253544.466805e-08
0.8562251.9251654.292322e-08
0.8598081.9249784.117109e-08
0.8634061.9247923.941162e-08
0.867021.9246073.764480e-08
0.8706481.9244233.587057e-08
0.8742921.9242413.408893e-08
0.877951.924063.229983e-08
0.8816251.923883.050324e-08
0.8853141.9237012.869913e-08
0.8890191.9235232.688747e-08
0.892741.9233472.506823e-08
0.8964761.9231722.324138e-08
0.91.9230082.151800e-08
0.9002271.9229972.157793e-08
0.9039951.9228242.257147e-08
0.9077781.9226532.356916e-08
0.9115771.9224822.457103e-08
0.9153921.9223122.557709e-08
0.9192231.9221432.658736e-08
0.9230691.9219762.760186e-08
0.9269321.9218092.862060e-08
0.9308121.9216442.964361e-08
0.9347071.9214793.067090e-08
0.9386191.9213153.170249e-08
0.9425471.9211533.273839e-08
0.9464911.9209913.377863e-08
0.9504521.920833.482323e-08
0.954431.9206713.587219e-08
0.9584241.9205123.692555e-08
0.9624351.9203543.798331e-08
0.9664631.9201973.904550e-08
0.9705071.9200414.011213e-08
0.9745691.9198854.118323e-08
0.9786471.9197314.225881e-08
0.9827431.9195774.333890e-08
0.9868551.9194254.442350e-08
0.9909851.9192734.551264e-08
0.9951321.9191214.660634e-08
0.9992971.9189714.770462e-08
11.9189464.789000e-08
1.003481.9188224.755603e-08
1.007681.9186734.715290e-08
1.01191.9185254.674808e-08
1.016131.9183774.634157e-08
1.020381.9182314.593336e-08
1.024651.9180854.552344e-08
1.028941.917944.511180e-08
1.033251.9177964.469845e-08
1.037571.9176524.428336e-08
1.041911.9175094.386653e-08
1.046271.9173664.344796e-08
1.050651.9172254.302764e-08
1.055051.9170834.260556e-08
1.059461.9169434.218171e-08
1.06391.9168034.175609e-08
1.068351.9166644.132869e-08
1.072821.9165254.089950e-08
1.077311.9163874.046851e-08
1.081821.9162494.003572e-08
1.086351.9161123.960112e-08
1.090891.9159763.916470e-08
1.095461.915843.872645e-08
1.100041.9157053.828637e-08
1.104651.915573.784445e-08
1.109271.9154363.740068e-08
1.113911.9153023.695505e-08
1.118571.9151683.650756e-08
1.123251.9150363.605819e-08
1.127961.9149033.560694e-08
1.132681.9147713.515381e-08
1.137421.914643.469877e-08
1.142181.9145093.424184e-08
1.146961.9143783.378299e-08
1.151761.9142483.332222e-08
1.156581.9141183.285952e-08
1.161421.9139883.239489e-08
1.166281.9138593.192831e-08
1.171161.913733.145978e-08
1.176061.9136023.098929e-08
1.180981.9134743.051683e-08
1.185921.9133463.004239e-08
1.190891.9132192.956597e-08
1.195871.9130922.908755e-08
1.21.9129872.869100e-08
1.200871.9129652.861436e-08
1.20591.9128392.817349e-08
1.210951.9127132.773078e-08
1.216011.9125872.728621e-08
1.22111.9124612.683979e-08
1.226211.9123362.639149e-08
1.231341.9122112.594132e-08
1.23651.9120862.548927e-08
1.241671.9119622.503532e-08
1.246871.9118372.457947e-08
1.252091.9117132.412172e-08
1.257331.9115892.366205e-08
1.262591.9114652.320046e-08
1.267871.9113422.273693e-08
1.273181.9112192.227147e-08
1.278511.9110952.180406e-08
1.283861.9109722.133469e-08
1.289231.9108492.086335e-08
1.294621.9107272.039005e-08
1.300041.9106041.991476e-08
1.305481.9104811.943749e-08
1.310951.9103591.895822e-08
1.316431.9102371.847694e-08
1.321941.9101141.799365e-08
1.327471.9099921.750833e-08
1.333031.909871.702098e-08
1.338611.9097481.653160e-08
1.344211.9096261.604017e-08
1.349841.9095041.554668e-08
1.355481.9093821.505112e-08
1.361161.9092611.455349e-08
1.366851.9091391.405378e-08
1.372571.9090171.355198e-08
1.378321.9088951.304807e-08
1.384091.9087731.254206e-08
1.389881.9086511.203393e-08
1.395691.9085291.152368e-08
1.41.908441.114600e-08
1.401541.9084081.164875e-08
1.40741.9082861.356900e-08
1.413291.9081641.549729e-08
1.419211.9080411.743364e-08
1.425141.9079191.937810e-08
1.431111.9077972.133069e-08
1.43711.9076752.329146e-08
1.443111.9075522.526043e-08
1.449151.907432.723764e-08
1.455221.9073072.922313e-08
1.461311.9071843.121693e-08
1.467421.9070613.321906e-08
1.473561.9069383.522958e-08
1.479731.9068153.724852e-08
1.485921.9066913.927590e-08
1.492141.9065684.131176e-08
1.498381.9064444.335615e-08
1.504661.906324.540909e-08
1.510951.9061964.747062e-08
1.517281.9060724.954078e-08
1.523631.9059475.161961e-08
1.531.9058225.370713e-08
1.53641.9056975.580339e-08
1.542831.9055725.790842e-08
1.549291.9054466.002226e-08
1.555771.905326.214495e-08
1.562291.9051946.427652e-08
1.568821.9050686.641701e-08
1.575391.9049416.856646e-08
1.581981.9048147.072491e-08
1.58861.9046877.289239e-08
1.595251.9045597.506893e-08
1.61.9044687.662400e-08
1.601931.9044317.755148e-08
1.608631.9043038.077963e-08
1.615361.9041748.402129e-08
1.622121.9040458.727652e-08
1.628911.9039169.054537e-08
1.635731.9037869.382789e-08
1.642571.9036569.712416e-08
1.649451.9035251.004342e-07
1.656351.9033941.037581e-07
1.663281.9032631.070960e-07
1.670241.9031311.104477e-07
1.677231.9029991.138136e-07
1.684251.9028661.171935e-07
1.69131.9027331.205875e-07
1.698381.9025991.239958e-07
1.705491.9024651.274183e-07
1.712621.902331.308551e-07
1.719791.9021951.343063e-07
1.726991.902061.377720e-07
1.734211.9019241.412522e-07
1.741471.9017871.447469e-07
1.748761.901651.482563e-07
1.756081.9015121.517803e-07
1.763431.9013741.553191e-07
1.770811.9012351.588727e-07
1.778221.9010961.624412e-07
1.785661.9009561.660246e-07
1.793131.9008151.696230e-07
1.81.9006861.729300e-07
1.800641.9006741.734546e-07
1.808171.9005321.796657e-07
1.815741.900391.859029e-07
1.823341.9002461.921661e-07
1.830971.9001031.984556e-07
1.838631.8999582.047714e-07
1.846331.8998132.111136e-07
1.854051.8996682.174824e-07
1.861811.8995212.238778e-07
1.86961.8993742.303000e-07
1.877431.8992262.367490e-07
1.885281.8990782.432251e-07
1.893171.8989282.497282e-07
1.90111.8987782.562586e-07
1.909051.8986282.628163e-07
1.917041.8984762.694014e-07
1.925061.8983242.760141e-07
1.933121.8981712.826544e-07
1.941211.8980172.893226e-07
1.949331.8978622.960187e-07
1.957491.8977073.027427e-07
1.965681.897553.094950e-07
1.973911.8973933.162754e-07
1.982171.8972353.230843e-07
1.990471.8970763.299217e-07
1.99881.8969163.367876e-07
21.8968933.377800e-07
2.007161.8967563.532363e-07
2.015561.8965943.713669e-07
2.0241.8964323.895734e-07
2.032471.8962684.078560e-07
2.040971.8961044.262152e-07
2.049511.8959394.446512e-07
2.058091.8957734.631644e-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
—