Optical constants

Refractive index of J-SK16 (HIKARI)

J-SK16: 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
1.62041
Extinction coefficient k
1.98319e-08
Permittivity ε1
2.62572
Permittivity ε2
6.42715e-08
Absorption coefficient α
0.00424123 cm⁻¹
Penetration depth δ = λ/(2πk)
4.71561e+09 nm
Abbe number Vd
60.246
Chromatic dispersion dn/dλ
-0.053286 µm⁻¹
Group index ng
1.65172
Group velocity dispersion
91.9434 fs²/mm
Dispersion parameter D
-501.6 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-SK16 (HIKARI): J-SK16
hikari_j_sk16 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-SK16", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_sk16.range_nm)  # (365.015, 2058.09) nm
eps = hikari_j_sk16.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=2.58448044−0.0111132665⁢λ2.0−0.000137540448⁢λ4.0+0.0149921982⁢λ−2.0+0.000188581834⁢λ−4.0+3.56240422×10-6⁢λ−6.0+7.76507396×10-8⁢λ−8.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C12.58448044
C2-0.0111132665
C32.0
C4-0.000137540448
C54.0
C60.0149921982
C7-2.0
C80.000188581834
C9-4.0
C103.56240422e-06
C11-6.0
C127.76507396e-08
C13-8.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 9.56742e-07 8.62529e-09 2.05826e-12 4.36559e-07 5.9131e-10 0.172138
nd
1.620410
Vd
60.245509
density
value: 3560
thermal expansion
value: 6e-06, temperature range: 243 343
dPgF
-0.0031
resistance
phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 1.07e-06 K⁻¹ at 633 nm, dn/dT = 5.96e-07 K⁻¹ at 1310 nm, dn/dT = 5.57e-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-SK16 (HIKARI), J-SK16: n and k versus wavelength
λ (µm)nk
0.3650151.6455692.262703e-07
0.3666011.64522.072767e-07
0.3681931.6448351.882005e-07
0.3697931.6444731.690415e-07
0.371.6444271.665600e-07
0.3713991.6441161.578900e-07
0.3730131.6437621.478931e-07
0.3746331.6434111.378527e-07
0.3762611.6430641.277688e-07
0.3778951.6427211.176410e-07
0.3795371.6423811.074693e-07
0.381.6422861.046000e-07
0.3811861.6420441.000075e-07
0.3828421.6417119.359362e-08
0.3845051.6413818.715189e-08
0.3861751.6410558.068218e-08
0.3878531.6407317.418436e-08
0.3895381.6404116.765832e-08
0.391.6403246.586800e-08
0.391231.6400946.368350e-08
0.392931.6397816.066502e-08
0.3946371.639475.763343e-08
0.3963511.6391625.458866e-08
0.3980731.6388585.153067e-08
0.3998021.6385564.845940e-08
0.41.6385224.810800e-08
0.4015391.6382584.673123e-08
0.4032831.6379624.517071e-08
0.4050351.6376694.360341e-08
0.4067951.6373794.202930e-08
0.4085621.6370924.044835e-08
0.4103371.6368083.886054e-08
0.412121.6365263.726582e-08
0.413911.6362473.566418e-08
0.4157081.6359713.405558e-08
0.4175141.6356983.243999e-08
0.4193281.6354273.081739e-08
0.421.6353273.021600e-08
0.4211491.6351583.009577e-08
0.4229791.6348932.990440e-08
0.4248171.6346292.971219e-08
0.4266621.6343692.951915e-08
0.4285161.6341112.932528e-08
0.4303771.6338552.913056e-08
0.4322471.6336012.893499e-08
0.4341251.633352.873857e-08
0.436011.6331022.854130e-08
0.4379051.6328562.834318e-08
0.4398071.6326122.814419e-08
0.441.6325872.812400e-08
0.4417181.632372.760065e-08
0.4436371.6321312.701595e-08
0.4455641.6318932.642872e-08
0.4474991.6316582.583893e-08
0.4494431.6314262.524658e-08
0.4513961.6311952.465166e-08
0.4533571.6309662.405415e-08
0.4553261.630742.345405e-08
0.4573041.6305162.285134e-08
0.4592911.6302942.224601e-08
0.461.6302152.203000e-08
0.4612861.6300732.184451e-08
0.463291.6298552.155554e-08
0.4653031.6296392.126532e-08
0.4673241.6294252.097383e-08
0.4693541.6292122.068108e-08
0.4713931.6290022.038706e-08
0.4734411.6287942.009176e-08
0.4754981.6285871.979518e-08
0.4775641.6283821.949731e-08
0.4796381.628181.919815e-08
0.481.6281441.914600e-08
0.4817221.6279781.921471e-08
0.4838151.6277791.929821e-08
0.4859171.6275821.938207e-08
0.4880271.6273861.946630e-08
0.4901481.6271921.955089e-08
0.4922771.6271.963585e-08
0.4944151.6268091.972118e-08
0.4965631.626621.980688e-08
0.4987211.6264331.989295e-08
0.51.6263231.994400e-08
0.5008871.6262481.997939e-08
0.5030631.6260642.006622e-08
0.5052481.6258812.015341e-08
0.5074431.6257012.024099e-08
0.5096481.6255212.032895e-08
0.5118621.6253442.041729e-08
0.5140861.6251682.050601e-08
0.5163191.6249932.059512e-08
0.5185621.624822.068462e-08
0.5208151.6246492.077450e-08
0.5230771.6244782.086478e-08
0.5253491.624312.095545e-08
0.5276321.6241432.104651e-08
0.5299241.6239772.113796e-08
0.5322261.6238122.122982e-08
0.5345381.6236492.132207e-08
0.536861.6234882.141473e-08
0.5391931.6233282.150778e-08
0.5415351.6231692.160124e-08
0.5438871.6230112.169511e-08
0.546251.6228552.178938e-08
0.5486231.62272.188407e-08
0.551.6226112.193900e-08
0.5510071.6225462.188259e-08
0.55341.6223942.174845e-08
0.5558041.6222432.161372e-08
0.5582191.6220932.147841e-08
0.5606441.6219442.134251e-08
0.563081.6217962.120602e-08
0.5655261.621652.106894e-08
0.5679821.6215052.093126e-08
0.570451.6213612.079298e-08
0.5729281.6212182.065411e-08
0.5754171.6210772.051463e-08
0.5779171.6209362.037454e-08
0.5804271.6207972.023385e-08
0.5829491.6206592.009254e-08
0.5854811.6205211.995062e-08
0.5880251.6203851.980809e-08
0.5905791.620251.966493e-08
0.5931451.6201161.952116e-08
0.5957221.6199831.937675e-08
0.598311.6198521.923172e-08
0.61.6197661.913700e-08
0.6009091.6197211.926045e-08
0.6035191.6195911.961500e-08
0.6061411.6194621.997110e-08
0.6087741.6193342.032874e-08
0.6114191.6192072.068794e-08
0.6140751.6190812.104870e-08
0.6167431.6189562.141102e-08
0.6194221.6188322.177492e-08
0.6221131.6187092.214040e-08
0.6248161.6185872.250747e-08
0.627531.6184662.287613e-08
0.6302561.6183452.324640e-08
0.6329941.6182262.361827e-08
0.6357441.6181072.399176e-08
0.6385061.617992.436687e-08
0.641281.6178732.474361e-08
0.6440661.6177572.512199e-08
0.6468641.6176412.550201e-08
0.6496741.6175272.588368e-08
0.651.6175142.592800e-08
0.6524961.6174142.602754e-08
0.6553311.6173012.614058e-08
0.6581781.6171892.625412e-08
0.6610371.6170782.636815e-08
0.6639081.6169672.648267e-08
0.6667931.6168582.659769e-08
0.6696891.6167492.671321e-08
0.6725991.6166412.682923e-08
0.6755211.6165332.694576e-08
0.6784551.6164262.706279e-08
0.6814031.6163212.718033e-08
0.6843631.6162152.729839e-08
0.6873361.6161112.741695e-08
0.6903221.6160072.753603e-08
0.6933211.6159042.765563e-08
0.6963331.6158012.777574e-08
0.6993581.6156992.789638e-08
0.71.6156782.792200e-08
0.7023961.6155982.847811e-08
0.7054471.6154982.918639e-08
0.7085121.6153982.989775e-08
0.711591.6152993.061221e-08
0.7146811.61523.132976e-08
0.7177861.6151023.205043e-08
0.7209041.6150053.277424e-08
0.7240361.6149083.350118e-08
0.7271811.6148123.423129e-08
0.730341.6147163.496457e-08
0.7335131.6146213.570103e-08
0.73671.6145263.644069e-08
0.73991.6144333.718357e-08
0.7431141.6143393.792967e-08
0.7463421.6142463.867902e-08
0.7495851.6141543.943162e-08
0.7528411.6140624.018748e-08
0.7561121.6139714.094664e-08
0.7593961.613884.170909e-08
0.7626951.613794.247485e-08
0.7660091.61374.324394e-08
0.7693361.6136114.401637e-08
0.7726791.6135224.479216e-08
0.7760351.6134344.557131e-08
0.7794071.6133464.635386e-08
0.7827931.6132594.713980e-08
0.7861931.6131724.792915e-08
0.7896091.6130854.872194e-08
0.7930391.6129994.951816e-08
0.7964841.6129145.031785e-08
0.7999441.6128295.112101e-08
0.81.6128275.113400e-08
0.8034191.6127444.987587e-08
0.8069091.6126594.859161e-08
0.8104151.6125754.730176e-08
0.8139351.6124924.600631e-08
0.8174711.6124094.470523e-08
0.8210231.6123264.339849e-08
0.8245891.6122434.208609e-08
0.8281721.6121614.076798e-08
0.8317691.612083.944414e-08
0.8353831.6119983.811455e-08
0.8390121.6119173.677919e-08
0.8426571.6118373.543803e-08
0.8463171.6117563.409104e-08
0.8499941.6116773.273819e-08
0.8536871.6115973.137947e-08
0.8573951.6115183.001485e-08
0.861121.6114382.864430e-08
0.8648611.611362.726780e-08
0.8686181.6112812.588532e-08
0.8723911.6112032.449683e-08
0.8761811.6111252.310230e-08
0.8799881.6110482.170172e-08
0.8838111.610972.029506e-08
0.887651.6108931.888228e-08
0.8915061.6108171.746337e-08
0.8953791.610741.603830e-08
0.8992691.6106641.460703e-08
0.91.6106491.433800e-08
0.9031751.6105881.489552e-08
0.9070991.6105121.558439e-08
0.911041.6104361.627625e-08
0.9149981.6103611.697112e-08
0.9189721.6102861.766900e-08
0.9229651.6102111.836992e-08
0.9269741.6101361.907388e-08
0.9310011.6100611.978090e-08
0.9350461.6099872.049099e-08
0.9391081.6099132.120416e-08
0.9431881.6098392.192044e-08
0.9472851.6097652.263982e-08
0.95141.6096912.336233e-08
0.9555331.6096182.408798e-08
0.9596841.6095452.481678e-08
0.9638531.6094712.554875e-08
0.9680411.6093982.628390e-08
0.9722461.6093252.702224e-08
0.976471.6092532.776379e-08
0.9807121.609182.850856e-08
0.9849721.6091072.925656e-08
0.9892511.6090353.000782e-08
0.9935491.6089633.076234e-08
0.9978651.608893.152013e-08
11.6088553.189500e-08
1.00221.6088183.175446e-08
1.006551.6087463.147632e-08
1.010931.6086743.119697e-08
1.015321.6086023.091641e-08
1.019731.6085313.063463e-08
1.024161.6084593.035162e-08
1.028611.6083873.006738e-08
1.033081.6083162.978191e-08
1.037561.6082442.949520e-08
1.042071.6081732.920724e-08
1.04661.6081012.891804e-08
1.051151.608032.862757e-08
1.055711.6079582.833585e-08
1.06031.6078872.804285e-08
1.06491.6078152.774859e-08
1.069531.6077442.745304e-08
1.074181.6076732.715621e-08
1.078841.6076012.685810e-08
1.083531.607532.655868e-08
1.088241.6074582.625797e-08
1.092961.6073872.595595e-08
1.097711.6073162.565262e-08
1.102481.6072442.534797e-08
1.107271.6071732.504200e-08
1.112081.6071012.473469e-08
1.116911.6070292.442606e-08
1.121761.6069582.411608e-08
1.126641.6068862.380475e-08
1.131531.6068142.349208e-08
1.136451.6067422.317804e-08
1.141381.606672.286264e-08
1.146341.6065982.254587e-08
1.151321.6065262.222772e-08
1.156321.6064542.190819e-08
1.161351.6063822.158728e-08
1.166391.6063092.126497e-08
1.171461.6062372.094126e-08
1.176551.6061642.061614e-08
1.181661.6060912.028961e-08
1.186791.6060181.996166e-08
1.191951.6059451.963229e-08
1.197131.6058721.930149e-08
1.21.6058321.911800e-08
1.202331.6057992.164825e-08
1.207551.6057252.732408e-08
1.21281.6056523.302458e-08
1.218071.6055783.874984e-08
1.223361.6055044.449997e-08
1.228671.605435.027508e-08
1.234011.6053555.607528e-08
1.239371.6052816.190068e-08
1.244751.6052066.775138e-08
1.250161.6051317.362751e-08
1.255591.6050567.952915e-08
1.261051.6049818.545644e-08
1.266531.6049059.140948e-08
1.272031.6048299.738837e-08
1.277551.6047531.033932e-07
1.28311.6046771.094242e-07
1.288681.60461.154814e-07
1.294281.6045241.215648e-07
1.29991.6044461.276747e-07
1.305551.6043691.338112e-07
1.311221.6042921.399743e-07
1.316911.6042141.461641e-07
1.322641.6041361.523809e-07
1.328381.6040571.586247e-07
1.334151.6039781.648956e-07
1.339951.6038991.711937e-07
1.345771.603821.775192e-07
1.351621.603741.838722e-07
1.357491.603661.902528e-07
1.363381.603581.966611e-07
1.369311.6034992.030972e-07
1.375261.6034182.095613e-07
1.381231.6033372.160535e-07
1.387231.6032552.225739e-07
1.393261.6031732.291226e-07
1.399311.603092.356997e-07
1.41.6030812.364500e-07
1.405391.6030082.349159e-07
1.411491.6029242.331777e-07
1.417631.6028412.314320e-07
1.423781.6027572.296786e-07
1.429971.6026722.279177e-07
1.436181.6025872.261491e-07
1.442421.6025022.243728e-07
1.448691.6024162.225888e-07
1.454981.602332.207971e-07
1.46131.6022442.189976e-07
1.467651.6021572.171902e-07
1.474031.6020692.153750e-07
1.480431.6019812.135520e-07
1.486861.6018932.117210e-07
1.493321.6018042.098820e-07
1.499811.6017142.080351e-07
1.506321.6016242.061801e-07
1.512871.6015342.043171e-07
1.519441.6014432.024460e-07
1.526041.6013522.005667e-07
1.532671.601261.986793e-07
1.539331.6011671.967837e-07
1.546011.6010741.948799e-07
1.552731.600981.929677e-07
1.559481.6008861.910473e-07
1.566251.6007911.891186e-07
1.573051.6006961.871814e-07
1.579891.60061.852358e-07
1.586751.6005041.832818e-07
1.593641.6004071.813193e-07
1.61.6003171.795100e-07
1.600571.6003091.801973e-07
1.607521.6002111.886117e-07
1.61451.6001121.970628e-07
1.621521.6000122.055505e-07
1.628561.5999122.140751e-07
1.635641.5998112.226367e-07
1.642741.5997092.312356e-07
1.649881.5996072.398717e-07
1.657051.5995042.485455e-07
1.664251.5994012.572568e-07
1.671481.5992962.660061e-07
1.678741.5991912.747933e-07
1.686031.5990862.836187e-07
1.693351.5989792.924825e-07
1.700711.5988723.013847e-07
1.70811.5987643.103257e-07
1.715521.5986553.193054e-07
1.722971.5985463.283242e-07
1.730461.5984363.373822e-07
1.737971.5983253.464795e-07
1.745521.5982133.556163e-07
1.753111.59813.647929e-07
1.760721.5979873.740092e-07
1.768371.5978723.832657e-07
1.776051.5977573.925623e-07
1.783771.5976414.018994e-07
1.791521.5975254.112769e-07
1.79931.5974074.206953e-07
1.81.5973964.215400e-07
1.807121.5972884.373845e-07
1.814971.5971694.548582e-07
1.822851.5970484.724079e-07
1.830771.5969274.900338e-07
1.838731.5968055.077362e-07
1.846711.5966825.255156e-07
1.854741.5965585.433722e-07
1.862791.5964335.613064e-07
1.870891.5963075.793185e-07
1.879011.596185.974088e-07
1.887181.5960526.155777e-07
1.895371.5959236.338256e-07
1.903611.5957936.521527e-07
1.911881.5956626.705595e-07
1.920181.595536.890462e-07
1.928531.5953977.076132e-07
1.93691.5952627.262609e-07
1.945321.5951277.449896e-07
1.953771.5949917.637996e-07
1.962261.5948537.826914e-07
1.970781.5947158.016653e-07
1.979341.5945758.207215e-07
1.987941.5944348.398606e-07
1.996581.5942928.590828e-07
21.5942358.667000e-07
2.005251.5941499.295955e-07
2.013961.5940041.033931e-06
2.022711.5938591.138719e-06
2.03151.5937121.243962e-06
2.040321.5935641.349663e-06
2.049191.5934141.455823e-06
2.058091.5932641.562444e-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
—