Optical constants

Refractive index of J-LF6 (HIKARI)

J-LF6: 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
1.56732
Extinction coefficient k
3.64647e-08
Permittivity ε1
2.45648
Permittivity ε2
1.14304e-07
Absorption coefficient α
0.00779832 cm⁻¹
Penetration depth δ = λ/(2πk)
2.56466e+09 nm
Abbe number Vd
42.578
Chromatic dispersion dn/dλ
-0.0678452 µm⁻¹
Group index ng
1.60718
Group velocity dispersion
128.352 fs²/mm
Dispersion parameter D
-700.228 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-LF6 (HIKARI): J-LF6
hikari_j_lf6 = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LF6", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lf6.range_nm)  # (365.015, 2058.09) nm
eps = hikari_j_lf6.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=2.40368894−0.00844989386⁢λ2.0−0.00012227067⁢λ4.0+0.0183786358⁢λ−2.0+9.28895588×10-5⁢λ−4.0+9.23801901×10-5⁢λ−6.0−9.1429577×10-6⁢λ−8.0+5.77555194×10-7⁢λ−10.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C12.40368894
C2-0.00844989386
C32.0
C4-0.00012227067
C54.0
C60.0183786358
C7-2.0
C89.28895588e-05
C9-4.0
C109.23801901e-05
C11-6.0
C12-9.1429577e-06
C13-8.0
C145.77555194e-07
C15-10.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: -2.7512e-06 9.5882e-09 -9.4671e-13 6.8811e-07 8.1358e-10 0.24835
nd
1.567320
Vd
42.578098
density
value: 2610
thermal expansion
value: 9.1e-06, temperature range: 243 343
dPgF
0.0024
resistance
phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = -3.34e-07 K⁻¹ at 633 nm, dn/dT = -1.05e-06 K⁻¹ at 1310 nm, dn/dT = -1.10e-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 421 wavelengths, the same grid as the API and the library
J-LF6 (HIKARI), J-LF6: n and k versus wavelength
λ (µm)nk
0.3650151.6029771.249755e-06
0.3666011.6023881.097004e-06
0.3681931.6018089.435885e-07
0.3697931.6012367.895069e-07
0.371.6011627.695500e-07
0.3713991.6006727.111770e-07
0.3730131.6001176.438705e-07
0.3746331.5995695.762717e-07
0.3762611.599035.083791e-07
0.3778951.5984974.401916e-07
0.3795371.5979733.717079e-07
0.381.5978263.523900e-07
0.3811861.5974553.310341e-07
0.3828421.5969453.012086e-07
0.3845051.5964412.712535e-07
0.3861751.5959442.411683e-07
0.3878531.5954542.109524e-07
0.3895381.5949711.806053e-07
0.391.594841.722800e-07
0.391231.5944941.634190e-07
0.392931.5940231.511751e-07
0.3946371.5935581.388781e-07
0.3963511.59311.265276e-07
0.3980731.5926471.141234e-07
0.3998021.59221.016654e-07
0.41.5921491.002400e-07
0.4015391.5917599.693636e-08
0.4032831.5913239.319179e-08
0.4050351.5908938.943095e-08
0.4067951.5904688.565377e-08
0.4085621.5900488.186019e-08
0.4103371.5896347.805012e-08
0.412121.5892257.422350e-08
0.413911.588827.038026e-08
0.4157081.5884216.652032e-08
0.4175141.5880266.264362e-08
0.4193281.5876365.875007e-08
0.421.5874945.730700e-08
0.4211491.5872515.705482e-08
0.4229791.5868715.665341e-08
0.4248171.5864955.625026e-08
0.4266621.5861235.584536e-08
0.4285161.5857565.543869e-08
0.4303771.5853935.503026e-08
0.4322471.5850345.462006e-08
0.4341251.5846795.420808e-08
0.436011.5843285.379430e-08
0.4379051.5839825.337873e-08
0.4398071.5836395.296135e-08
0.441.5836055.291900e-08
0.4417181.58335.248788e-08
0.4436371.5829665.200623e-08
0.4455641.5826345.152249e-08
0.4474991.5823075.103665e-08
0.4494431.5819835.054869e-08
0.4513961.5816635.005862e-08
0.4533571.5813464.956641e-08
0.4553261.5810334.907207e-08
0.4573041.5807244.857558e-08
0.4592911.5804174.807694e-08
0.461.5803094.789900e-08
0.4612861.5801144.753567e-08
0.463291.5798154.696966e-08
0.4653031.5795184.640119e-08
0.4673241.5792254.583025e-08
0.4693541.5789354.525683e-08
0.4713931.5786484.468092e-08
0.4734411.5783644.410250e-08
0.4754981.5780834.352158e-08
0.4775641.5778054.293813e-08
0.4796381.577534.235214e-08
0.481.5774834.225000e-08
0.4817221.5772584.170945e-08
0.4838151.5769894.105255e-08
0.4859171.5767234.039279e-08
0.4880271.5764593.973017e-08
0.4901481.5761983.906467e-08
0.4922771.575943.839628e-08
0.4944151.5756843.772498e-08
0.4965631.5754313.705077e-08
0.4987211.5751813.637363e-08
0.51.5750343.597200e-08
0.5008871.5749333.587927e-08
0.5030631.5746883.565179e-08
0.5052481.5744453.542332e-08
0.5074431.5742053.519387e-08
0.5096481.5739673.496341e-08
0.5118621.5737313.473196e-08
0.5140861.5734983.449950e-08
0.5163191.5732673.426603e-08
0.5185621.5730393.403155e-08
0.5208151.5728133.379604e-08
0.5230771.5725893.355952e-08
0.5253491.5723673.332196e-08
0.5276321.5721473.308338e-08
0.5299241.571933.284376e-08
0.5322261.5717143.260309e-08
0.5345381.5715013.236138e-08
0.536861.571293.211863e-08
0.5391931.5710813.187481e-08
0.5415351.5708743.162994e-08
0.5438871.5706683.138400e-08
0.546251.5704653.113700e-08
0.5486231.5702643.088892e-08
0.551.5701483.074500e-08
0.5510071.5700653.089813e-08
0.55341.5698673.126226e-08
0.5558041.5696723.162797e-08
0.5582191.5694783.199527e-08
0.5606441.5692863.236417e-08
0.563081.5690963.273466e-08
0.5655261.5689073.310677e-08
0.5679821.5687213.348050e-08
0.570451.5685363.385585e-08
0.5729281.5683533.423282e-08
0.5754171.5681713.461144e-08
0.5779171.5679923.499170e-08
0.5804271.5678133.537362e-08
0.5829491.5676373.575719e-08
0.5854811.5674623.614243e-08
0.5880251.5672893.652934e-08
0.5905791.5671173.691793e-08
0.5931451.5669473.730821e-08
0.5957221.5667783.770019e-08
0.598311.5666113.809387e-08
0.61.5665033.835100e-08
0.6009091.5664453.850393e-08
0.6035191.5662813.894317e-08
0.6061411.5661183.938432e-08
0.6087741.5659573.982739e-08
0.6114191.5657974.027238e-08
0.6140751.5656384.071930e-08
0.6167431.5654814.116816e-08
0.6194221.5653254.161898e-08
0.6221131.5651714.207175e-08
0.6248161.5650184.252649e-08
0.627531.5648664.298321e-08
0.6302561.5647164.344191e-08
0.6329941.5645664.390260e-08
0.6357441.5644184.436530e-08
0.6385061.5642724.483000e-08
0.641281.5641264.529672e-08
0.6440661.5639824.576547e-08
0.6468641.5638394.623626e-08
0.6496741.5636974.670909e-08
0.651.5636814.676400e-08
0.6524961.5635574.638291e-08
0.6553311.5634174.595012e-08
0.6581781.5632794.551546e-08
0.6610371.5631424.507890e-08
0.6639081.5630064.464045e-08
0.6667931.5628714.420010e-08
0.6696891.5627374.375783e-08
0.6725991.5626044.331364e-08
0.6755211.5624724.286752e-08
0.6784551.5623414.241946e-08
0.6814031.5622124.196946e-08
0.6843631.5620834.151750e-08
0.6873361.5619564.106358e-08
0.6903221.5618294.060768e-08
0.6933211.5617034.014981e-08
0.6963331.5615793.968994e-08
0.6993581.5614553.922808e-08
0.71.5614293.913000e-08
0.7023961.5613323.972540e-08
0.7054471.5612114.048373e-08
0.7085121.561094.124535e-08
0.711591.560974.201028e-08
0.7146811.5608514.277853e-08
0.7177861.5607334.355012e-08
0.7209041.5606154.432506e-08
0.7240361.5604994.510337e-08
0.7271811.5603834.588506e-08
0.730341.5602694.667015e-08
0.7335131.5601554.745864e-08
0.73671.5600424.825057e-08
0.73991.559934.904593e-08
0.7431141.5598184.984475e-08
0.7463421.5597085.064703e-08
0.7495851.5595985.145281e-08
0.7528411.5594895.226208e-08
0.7561121.5593815.307487e-08
0.7593961.5592735.389119e-08
0.7626951.5591665.471106e-08
0.7660091.559065.553448e-08
0.7693361.5589555.636149e-08
0.7726791.558855.719209e-08
0.7760351.5587465.802629e-08
0.7794071.5586435.886412e-08
0.7827931.5585415.970559e-08
0.7861931.5584396.055072e-08
0.7896091.5583386.139952e-08
0.7930391.5582376.225200e-08
0.7964841.5581376.310819e-08
0.7999441.5580386.396809e-08
0.81.5580366.398200e-08
0.8034191.5579396.277581e-08
0.8069091.5578426.154456e-08
0.8104151.5577446.030796e-08
0.8139351.5576475.906599e-08
0.8174711.5575515.781862e-08
0.8210231.5574565.656583e-08
0.8245891.5573615.530760e-08
0.8281721.5572665.404390e-08
0.8317691.5571725.277472e-08
0.8353831.5570795.150002e-08
0.8390121.5569865.021978e-08
0.8426571.5568944.893398e-08
0.8463171.5568034.764260e-08
0.8499941.5567114.634560e-08
0.8536871.5566214.504297e-08
0.8573951.5565314.373469e-08
0.861121.5564414.242071e-08
0.8648611.5563524.110104e-08
0.8686181.5562633.977562e-08
0.8723911.5561753.844445e-08
0.8761811.5560873.710750e-08
0.8799881.5563.576474e-08
0.8838111.5559133.441614e-08
0.887651.5558273.306169e-08
0.8915061.5557413.170135e-08
0.8953791.5556553.033510e-08
0.8992691.555572.896292e-08
0.91.5555552.870500e-08
0.9031751.5554862.931422e-08
0.9070991.5554023.006696e-08
0.911041.5553183.082298e-08
0.9149981.5552343.158228e-08
0.9189721.5551513.234487e-08
0.9229651.5550683.311078e-08
0.9269741.5549863.388002e-08
0.9310011.5549043.465260e-08
0.9350461.5548233.542853e-08
0.9391081.5547413.620784e-08
0.9431881.5546613.699053e-08
0.9472851.554583.777662e-08
0.95141.55453.856613e-08
0.9555331.554423.935906e-08
0.9596841.554344.015544e-08
0.9638531.5542614.095528e-08
0.9680411.5541824.175860e-08
0.9722461.5541044.256541e-08
0.976471.5540254.337572e-08
0.9807121.5539474.418955e-08
0.9849721.5538694.500691e-08
0.9892511.5537924.582783e-08
0.9935491.5537154.665231e-08
0.9978651.5536384.748037e-08
11.55364.789000e-08
1.00221.5535614.767883e-08
1.006551.5534844.726089e-08
1.010931.5534084.684113e-08
1.015321.5533324.641955e-08
1.019731.5532564.599613e-08
1.024161.5531814.557088e-08
1.028611.5531054.514378e-08
1.033081.553034.471483e-08
1.037561.5529554.428401e-08
1.042071.5528814.385132e-08
1.04661.5528064.341675e-08
1.051151.5527324.298029e-08
1.055711.5526584.254194e-08
1.06031.5525844.210168e-08
1.06491.552514.165951e-08
1.069531.5524364.121542e-08
1.074181.5523624.076940e-08
1.078841.5522894.032144e-08
1.083531.5522163.987153e-08
1.088241.5521433.941968e-08
1.092961.552073.896585e-08
1.097711.5519973.851006e-08
1.102481.5519243.805229e-08
1.107271.5518523.759253e-08
1.112081.5517793.713077e-08
1.116911.5517073.666700e-08
1.121761.5516343.620122e-08
1.126641.5515623.573342e-08
1.131531.551493.526358e-08
1.136451.5514183.479170e-08
1.141381.5513463.431778e-08
1.146341.5512743.384179e-08
1.151321.5512023.336374e-08
1.156321.551133.288361e-08
1.161351.5510593.240139e-08
1.166391.5509873.191708e-08
1.171461.5509153.143067e-08
1.176551.5508433.094214e-08
1.181661.5507723.045149e-08
1.186791.55072.995871e-08
1.191951.5506292.946378e-08
1.197131.5505572.896671e-08
1.21.5505172.869100e-08
1.202331.5504852.926810e-08
1.207551.5504143.056264e-08
1.21281.5503423.186281e-08
1.218071.5502713.316862e-08
1.223361.5501993.448011e-08
1.228671.5501273.579730e-08
1.234011.5500553.712020e-08
1.239371.5499843.844886e-08
1.244751.5499123.978328e-08
1.250161.549844.112351e-08
1.255591.5497684.246955e-08
1.261051.5496964.382145e-08
1.266531.5496244.517921e-08
1.272031.5495524.654288e-08
1.277551.549484.791247e-08
1.28311.5494074.928800e-08
1.288681.5493355.066952e-08
1.294281.5492625.205703e-08
1.29991.549195.345058e-08
1.305551.5491175.485018e-08
1.311221.5490445.625585e-08
1.316911.5489715.766764e-08
1.322641.5488985.908555e-08
1.328381.5488256.050963e-08
1.334151.5487516.193990e-08
1.339951.5486786.337637e-08
1.345771.5486046.481909e-08
1.351621.548536.626807e-08
1.357491.5484566.772335e-08
1.363381.5483826.918496e-08
1.369311.5483087.065291e-08
1.375261.5482337.212724e-08
1.381231.5481597.360797e-08
1.387231.5480847.509513e-08
1.393261.5480087.658876e-08
1.399311.5479337.808888e-08
1.41.5479247.826000e-08
1.405391.5478578.064036e-08
1.411491.5477828.333739e-08
1.417631.5477068.604614e-08
1.423781.5476298.876666e-08
1.429971.5475539.149899e-08
1.436181.5474769.424320e-08
1.442421.5473999.699932e-08
1.448691.5473229.976742e-08
1.454981.5472441.025475e-07
1.46131.5471661.053398e-07
1.467651.5470881.081441e-07
1.474031.547011.109606e-07
1.480431.5469311.137893e-07
1.486861.5468521.166304e-07
1.493321.5467731.194838e-07
1.499811.5466931.223495e-07
1.506321.5466131.252278e-07
1.512871.5465331.281185e-07
1.519441.5464521.310218e-07
1.526041.5463711.339377e-07
1.532671.546291.368663e-07
1.539331.5462081.398076e-07
1.546011.5461261.427616e-07
1.552731.5460441.457285e-07
1.559481.5459611.487083e-07
1.566251.5458781.517010e-07
1.573051.5457941.547068e-07
1.579891.545711.577256e-07
1.586751.5456261.607575e-07
1.593641.5455411.638026e-07
1.61.5454631.666100e-07
1.600571.5454561.676704e-07
1.607521.545371.806531e-07
1.61451.5452841.936923e-07
1.621521.5451972.067881e-07
1.628561.545112.199407e-07
1.635641.5450232.331506e-07
1.642741.5449352.464178e-07
1.649881.5448462.597426e-07
1.657051.5447572.731253e-07
1.664251.5446682.865662e-07
1.671481.5445783.000655e-07
1.678741.5444883.136234e-07
1.686031.5443973.272402e-07
1.693351.5443053.409161e-07
1.700711.5442133.546515e-07
1.70811.5441213.684465e-07
1.715521.5440273.823015e-07
1.722971.5439343.962166e-07
1.730461.543844.101922e-07
1.737971.5437454.242286e-07
1.745521.5436494.383258e-07
1.753111.5435534.524844e-07
1.760721.5434574.667044e-07
1.768371.543364.809862e-07
1.776051.5432624.953301e-07
1.783771.5431635.097363e-07
1.791521.5430645.242050e-07
1.79931.5429645.387367e-07
1.81.5429555.400400e-07
1.807121.5428645.601022e-07
1.814971.5427635.822274e-07
1.822851.5426616.044487e-07
1.830771.5425596.267666e-07
1.838731.5424566.491814e-07
1.846711.5423526.716935e-07
1.854741.5422476.943035e-07
1.862791.5421427.170117e-07
1.870891.5420367.398185e-07
1.879011.5419297.627245e-07
1.887181.5418227.857299e-07
1.895371.5417138.088353e-07
1.903611.5416048.320410e-07
1.911881.5414958.553476e-07
1.920181.5413848.787554e-07
1.928531.5412729.022649e-07
1.93691.541169.258765e-07
1.945321.5410479.495907e-07
1.953771.5409339.734079e-07
1.962261.5408189.973286e-07
1.970781.5407031.021353e-06
1.979341.5405861.045482e-06
1.987941.5404691.069716e-06
1.996581.540351.094055e-06
21.5403041.103700e-06
2.005251.5402311.144051e-06
2.013961.5401111.210989e-06
2.022711.539991.278217e-06
2.03151.5398681.345738e-06
2.040321.5397451.413551e-06
2.049191.5396211.481659e-06
2.058091.5394961.550064e-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
—