Optical constants

Refractive index of J-SK14 (HIKARI)

J-SK14: 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
1.60311
Extinction coefficient k
1.76522e-08
Permittivity ε1
2.56996
Permittivity ε2
5.65968e-08
Absorption coefficient α
0.00377509 cm⁻¹
Penetration depth δ = λ/(2πk)
5.29788e+09 nm
Abbe number Vd
60.694
Chromatic dispersion dn/dλ
-0.0513888 µm⁻¹
Group index ng
1.6333
Group velocity dispersion
89.1438 fs²/mm
Dispersion parameter D
-486.327 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-SK14 (HIKARI): J-SK14
hikari_j_sk14 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-SK14", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_sk14.range_nm)  # (365.015, 2058.09) nm
eps = hikari_j_sk14.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=2.53043945−0.0102567827⁢λ2.0−9.7944083×10-5⁢λ4.0+0.014275253⁢λ−2.0+0.000200898558⁢λ−4.0+1.18522803×10-6⁢λ−6.0+1.46555128×10-7⁢λ−8.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C12.53043945
C2-0.0102567827
C32.0
C4-9.7944083e-05
C54.0
C60.014275253
C7-2.0
C80.000200898558
C9-4.0
C101.18522803e-06
C11-6.0
C121.46555128e-07
C13-8.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 1.1482e-06 1.589e-08 -1.7345e-12 4.4002e-07 2.1401e-10 0.18725
nd
1.603110
Vd
60.693804
density
value: 3430
thermal expansion
value: 5.8e-06, temperature range: 243 343
dPgF
-0.0014
resistance
phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 1.15e-06 K⁻¹ at 633 nm, dn/dT = 6.75e-07 K⁻¹ at 1310 nm, dn/dT = 6.36e-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-SK14 (HIKARI), J-SK14: n and k versus wavelength
λ (µm)nk
0.3650151.627421.611077e-07
0.3666011.6270641.471185e-07
0.3681931.6267111.330686e-07
0.3697931.6263621.189577e-07
0.371.6263171.171300e-07
0.3713991.6260161.105859e-07
0.3730131.6256741.030403e-07
0.3746331.6253359.546194e-08
0.3762611.6258.785064e-08
0.3778951.6246688.020627e-08
0.3795371.624347.252869e-08
0.381.6242487.036300e-08
0.3811861.6240146.795540e-08
0.3828421.6236926.459298e-08
0.3845051.6233746.121594e-08
0.3861751.6230585.782424e-08
0.3878531.6227465.441780e-08
0.3895381.6224365.099656e-08
0.391.6223525.005800e-08
0.391231.622134.783574e-08
0.392931.6218274.476508e-08
0.3946371.6215264.168108e-08
0.3963511.6212293.858369e-08
0.3980731.6209353.547284e-08
0.3998021.6206433.234847e-08
0.41.620613.199100e-08
0.4015391.6203543.107708e-08
0.4032831.6200693.004118e-08
0.4050351.6197862.900078e-08
0.4067951.6195052.795586e-08
0.4085621.6192282.690640e-08
0.4103371.6189532.585238e-08
0.412121.6186812.479379e-08
0.413911.6184112.373059e-08
0.4157081.6181442.266278e-08
0.4175141.617882.159032e-08
0.4193281.6176182.051321e-08
0.421.6175222.011400e-08
0.4211491.6173582.016906e-08
0.4229791.6171012.025669e-08
0.4248171.6168472.034471e-08
0.4266621.6165952.043311e-08
0.4285161.6163452.052189e-08
0.4303771.6160982.061106e-08
0.4322471.6158532.070062e-08
0.4341251.6156112.079057e-08
0.436011.615372.088090e-08
0.4379051.6151322.097163e-08
0.4398071.6148962.106275e-08
0.441.6148732.107200e-08
0.4417181.6146632.083815e-08
0.4436371.6144312.057689e-08
0.4455641.6142022.031449e-08
0.4474991.6139752.005095e-08
0.4494431.613751.978627e-08
0.4513961.6135271.952044e-08
0.4533571.6133061.925346e-08
0.4553261.6130871.898531e-08
0.4573041.612871.871600e-08
0.4592911.6126561.844552e-08
0.461.612581.834900e-08
0.4612861.6124431.815354e-08
0.463291.6122321.784904e-08
0.4653031.6120231.754322e-08
0.4673241.6118161.723607e-08
0.4693541.6116111.692759e-08
0.4713931.6114071.661776e-08
0.4734411.6112061.630659e-08
0.4754981.6110061.599407e-08
0.4775641.6108081.568019e-08
0.4796381.6106121.536495e-08
0.481.6105781.531000e-08
0.4817221.6104181.536485e-08
0.4838151.6102261.543150e-08
0.4859171.6100351.549844e-08
0.4880271.6098461.556568e-08
0.4901481.6096581.563320e-08
0.4922771.6094721.570102e-08
0.4944151.6092881.576913e-08
0.4965631.6091061.583754e-08
0.4987211.6089251.590625e-08
0.51.6088191.594700e-08
0.5008871.6087461.589738e-08
0.5030631.6085681.577565e-08
0.5052481.6083921.565340e-08
0.5074431.6082171.553062e-08
0.5096481.6080441.540730e-08
0.5118621.6078731.528345e-08
0.5140861.6077021.515906e-08
0.5163191.6075341.503412e-08
0.5185621.6073671.490865e-08
0.5208151.6072011.478263e-08
0.5230771.6070371.465607e-08
0.5253491.6068741.452895e-08
0.5276321.6067121.440128e-08
0.5299241.6065521.427306e-08
0.5322261.6063941.414428e-08
0.5345381.6062361.401494e-08
0.536861.606081.388504e-08
0.5391931.6059251.375457e-08
0.5415351.6057721.362354e-08
0.5438871.605621.349194e-08
0.546251.6054691.335976e-08
0.5486231.6053191.322701e-08
0.551.6052331.315000e-08
0.5510071.6051711.327053e-08
0.55341.6050241.355715e-08
0.5558041.6048781.384502e-08
0.5582191.6047331.413414e-08
0.5606441.604591.442451e-08
0.563081.6044481.471615e-08
0.5655261.6043061.500905e-08
0.5679821.6041661.530322e-08
0.570451.6040271.559868e-08
0.5729281.603891.589541e-08
0.5754171.6037531.619344e-08
0.5779171.6036181.649276e-08
0.5804271.6034831.679338e-08
0.5829491.603351.709530e-08
0.5854811.6032171.739854e-08
0.5880251.6030861.770310e-08
0.5905791.6029561.800897e-08
0.5931451.6028271.831618e-08
0.5957221.6026991.862472e-08
0.598311.6025721.893460e-08
0.61.6024891.913700e-08
0.6009091.6024451.926045e-08
0.6035191.602321.961500e-08
0.6061411.6021961.997110e-08
0.6087741.6020732.032874e-08
0.6114191.601952.068794e-08
0.6140751.6018292.104870e-08
0.6167431.6017092.141102e-08
0.6194221.6015892.177492e-08
0.6221131.6014712.214040e-08
0.6248161.6013532.250747e-08
0.627531.6012362.287613e-08
0.6302561.601122.324640e-08
0.6329941.6010052.361827e-08
0.6357441.6008912.399176e-08
0.6385061.6007772.436687e-08
0.641281.6006652.474361e-08
0.6440661.6005532.512199e-08
0.6468641.6004422.550201e-08
0.6496741.6003322.588368e-08
0.651.6003192.592800e-08
0.6524961.6002232.602754e-08
0.6553311.6001142.614058e-08
0.6581781.6000062.625412e-08
0.6610371.5998992.636815e-08
0.6639081.5997932.648267e-08
0.6667931.5996882.659769e-08
0.6696891.5995832.671321e-08
0.6725991.5994792.682923e-08
0.6755211.5993762.694576e-08
0.6784551.5992732.706279e-08
0.6814031.5991712.718033e-08
0.6843631.599072.729839e-08
0.6873361.5989692.741695e-08
0.6903221.5988692.753603e-08
0.6933211.598772.765563e-08
0.6963331.5986722.777574e-08
0.6993581.5985742.789638e-08
0.71.5985532.792200e-08
0.7023961.5984772.847811e-08
0.7054471.598382.918639e-08
0.7085121.5982842.989775e-08
0.711591.5981893.061221e-08
0.7146811.5980943.132976e-08
0.7177861.5983.205043e-08
0.7209041.5979063.277424e-08
0.7240361.5978133.350118e-08
0.7271811.5977213.423129e-08
0.730341.5976293.496457e-08
0.7335131.5975383.570103e-08
0.73671.5974473.644069e-08
0.73991.5973573.718357e-08
0.7431141.5972683.792967e-08
0.7463421.5971793.867902e-08
0.7495851.597093.943162e-08
0.7528411.5970024.018748e-08
0.7561121.5969144.094664e-08
0.7593961.5968274.170909e-08
0.7626951.5967414.247485e-08
0.7660091.5966554.324394e-08
0.7693361.5965694.401637e-08
0.7726791.5964844.479216e-08
0.7760351.59644.557131e-08
0.7794071.5963154.635386e-08
0.7827931.5962324.713980e-08
0.7861931.5961484.792915e-08
0.7896091.5960664.872194e-08
0.7930391.5959834.951816e-08
0.7964841.5959015.031785e-08
0.7999441.595825.112101e-08
0.81.5958185.113400e-08
0.8034191.5957385.036711e-08
0.8069091.5956584.958428e-08
0.8104151.5955774.879806e-08
0.8139351.5954974.800841e-08
0.8174711.5954184.721534e-08
0.8210231.5953394.641882e-08
0.8245891.595264.561884e-08
0.8281721.5951814.481539e-08
0.8317691.5951034.400845e-08
0.8353831.5950254.319800e-08
0.8390121.5949484.238403e-08
0.8426571.5948714.156652e-08
0.8463171.5947944.074546e-08
0.8499941.5947183.992084e-08
0.8536871.5946423.909263e-08
0.8573951.5945663.826082e-08
0.861121.594493.742541e-08
0.8648611.5944153.658636e-08
0.8686181.594343.574367e-08
0.8723911.5942663.489731e-08
0.8761811.5941923.404728e-08
0.8799881.5941173.319356e-08
0.8838111.5940443.233613e-08
0.887651.593973.147497e-08
0.8915061.5938973.061007e-08
0.8953791.5938242.974142e-08
0.8992691.5937512.886899e-08
0.91.5937382.870500e-08
0.9031751.5936792.880630e-08
0.9070991.5936072.893146e-08
0.911041.5935342.905717e-08
0.9149981.5934632.918342e-08
0.9189721.5933912.931022e-08
0.9229651.593322.943757e-08
0.9269741.5932492.956548e-08
0.9310011.5931782.969394e-08
0.9350461.5931072.982296e-08
0.9391081.5930362.995254e-08
0.9431881.5929663.008268e-08
0.9472851.5928963.021339e-08
0.95141.5928263.034467e-08
0.9555331.5927563.047651e-08
0.9596841.5926863.060893e-08
0.9638531.5926163.074193e-08
0.9680411.5925473.087550e-08
0.9722461.5924783.100965e-08
0.976471.5924083.114438e-08
0.9807121.5923393.127970e-08
0.9849721.5922713.141561e-08
0.9892511.5922023.155211e-08
0.9935491.5921333.168920e-08
0.9978651.5920653.182689e-08
11.5920313.189500e-08
1.00221.5919963.175446e-08
1.006551.5919283.147632e-08
1.010931.591863.119697e-08
1.015321.5917913.091641e-08
1.019731.5917233.063463e-08
1.024161.5916553.035162e-08
1.028611.5915873.006738e-08
1.033081.591522.978191e-08
1.037561.5914522.949520e-08
1.042071.5913842.920724e-08
1.04661.5913162.891804e-08
1.051151.5912492.862757e-08
1.055711.5911812.833585e-08
1.06031.5911142.804285e-08
1.06491.5910462.774859e-08
1.069531.5909782.745304e-08
1.074181.5909112.715621e-08
1.078841.5908432.685810e-08
1.083531.5907762.655868e-08
1.088241.5907092.625797e-08
1.092961.5906412.595595e-08
1.097711.5905742.565262e-08
1.102481.5905062.534797e-08
1.107271.5904382.504200e-08
1.112081.5903712.473469e-08
1.116911.5903032.442606e-08
1.121761.5902362.411608e-08
1.126641.5901682.380475e-08
1.131531.59012.349208e-08
1.136451.5900332.317804e-08
1.141381.5899652.286264e-08
1.146341.5898972.254587e-08
1.151321.5898292.222772e-08
1.156321.5897612.190819e-08
1.161351.5896932.158728e-08
1.166391.5896242.126497e-08
1.171461.5895562.094126e-08
1.176551.5894882.061614e-08
1.181661.5894192.028961e-08
1.186791.5893511.996166e-08
1.191951.5892821.963229e-08
1.197131.5892131.930149e-08
1.21.5891751.911800e-08
1.202331.5891442.164825e-08
1.207551.5890752.732408e-08
1.21281.5890063.302458e-08
1.218071.5889363.874984e-08
1.223361.5888674.449997e-08
1.228671.5887975.027508e-08
1.234011.5887275.607528e-08
1.239371.5886576.190068e-08
1.244751.5885876.775138e-08
1.250161.5885177.362751e-08
1.255591.5884467.952915e-08
1.261051.5883768.545644e-08
1.266531.5883059.140948e-08
1.272031.5882349.738837e-08
1.277551.5881621.033932e-07
1.28311.5880911.094242e-07
1.288681.5880191.154814e-07
1.294281.5879471.215648e-07
1.29991.5878751.276747e-07
1.305551.5878031.338112e-07
1.311221.587731.399743e-07
1.316911.5876571.461641e-07
1.322641.5875841.523809e-07
1.328381.5875111.586247e-07
1.334151.5874371.648956e-07
1.339951.5873631.711937e-07
1.345771.5872891.775192e-07
1.351621.5872141.838722e-07
1.357491.587141.902528e-07
1.363381.5870641.966611e-07
1.369311.5869892.030972e-07
1.375261.5869132.095613e-07
1.381231.5868372.160535e-07
1.387231.5867612.225739e-07
1.393261.5866852.291226e-07
1.399311.5866082.356997e-07
1.41.5865992.364500e-07
1.405391.586532.342208e-07
1.411491.5864532.316950e-07
1.417631.5863752.291583e-07
1.423781.5862962.266105e-07
1.429971.5862182.240516e-07
1.436181.5861382.214817e-07
1.442421.5860592.189006e-07
1.448691.5859792.163082e-07
1.454981.5858992.137046e-07
1.46131.5858182.110897e-07
1.467651.5857372.084635e-07
1.474031.5856562.058258e-07
1.480431.5855742.031767e-07
1.486861.5854922.005160e-07
1.493321.5854091.978438e-07
1.499811.5853261.951600e-07
1.506321.5852421.924646e-07
1.512871.5851581.897574e-07
1.519441.5850741.870384e-07
1.526041.5849891.843077e-07
1.532671.5849031.815651e-07
1.539331.5848171.788106e-07
1.546011.5847311.760441e-07
1.552731.5846441.732656e-07
1.559481.5845571.704750e-07
1.566251.5844691.676723e-07
1.573051.584381.648574e-07
1.579891.5842911.620303e-07
1.586751.5842021.591909e-07
1.593641.5841121.563392e-07
1.61.5840291.537100e-07
1.600571.5840211.543450e-07
1.607521.583931.621202e-07
1.61451.5838391.699291e-07
1.621521.5837461.777719e-07
1.628561.5836531.856488e-07
1.635641.583561.935599e-07
1.642741.5834662.015053e-07
1.649881.5833712.094853e-07
1.657051.5832762.175000e-07
1.664251.583182.255495e-07
1.671481.5830842.336339e-07
1.678741.5829872.417535e-07
1.686031.5828892.499083e-07
1.693351.5827912.580986e-07
1.700711.5826922.663244e-07
1.70811.5825922.745860e-07
1.715521.5824912.828835e-07
1.722971.582392.912170e-07
1.730461.5822892.995867e-07
1.737971.5821863.079928e-07
1.745521.5820833.164354e-07
1.753111.5819793.249146e-07
1.760721.5818743.334307e-07
1.768371.5817693.419839e-07
1.776051.5816633.505741e-07
1.783771.5815563.592017e-07
1.791521.5814483.678668e-07
1.79931.581343.765695e-07
1.81.581333.773500e-07
1.807121.581233.917843e-07
1.814971.581124.077028e-07
1.822851.581014.236905e-07
1.830771.5808984.397477e-07
1.838731.5807854.558746e-07
1.846711.5806724.720716e-07
1.854741.5805584.883389e-07
1.862791.5804435.046769e-07
1.870891.5803275.210859e-07
1.879011.580215.375662e-07
1.887181.5800935.541181e-07
1.895371.5799745.707418e-07
1.903611.5798545.874378e-07
1.911881.5797346.042063e-07
1.920181.5796136.210477e-07
1.928531.5794916.379622e-07
1.93691.5793676.549502e-07
1.945321.5792436.720120e-07
1.953771.5791186.891480e-07
1.962261.5789927.063583e-07
1.970781.5788657.236435e-07
1.979341.5787367.410037e-07
1.987941.5786077.584393e-07
1.996581.5784777.759507e-07
21.5784257.828900e-07
2.005251.5783468.424800e-07
2.013961.5782149.413317e-07
2.022711.578081.040613e-06
2.03151.5779461.140325e-06
2.040321.577811.240471e-06
2.049191.5776731.341052e-06
2.058091.5775361.442069e-06

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
—