Optical constants

Refractive index of J-LASF08A (HIKARI)

J-LASF08A: 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
1.883
Extinction coefficient k
6.22863e-08
Permittivity ε1
3.54567
Permittivity ε2
2.34570e-07
Absorption coefficient α
0.0133205 cm⁻¹
Penetration depth δ = λ/(2πk)
1.50145e+09 nm
Abbe number Vd
40.689
Chromatic dispersion dn/dλ
-0.110795 µm⁻¹
Group index ng
1.9481
Group velocity dispersion
209.273 fs²/mm
Dispersion parameter D
-1141.7 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-LASF08A (HIKARI): J-LASF08A
hikari_j_lasf08a = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASF08A", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_j_lasf08a.range_nm)  # (365.015, 2058.09) nm
eps = hikari_j_lasf08a.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=3.4408629−0.0138053657⁢λ2.0−5.63338044×10-5⁢λ4.0+0.035057073⁢λ−2.0+0.000960233781⁢λ−4.0−7.6596963×10-6⁢λ−6.0+2.57013206×10-6⁢λ−8.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C13.4408629
C2-0.0138053657
C32.0
C4-5.63338044e-05
C54.0
C60.035057073
C7-2.0
C80.000960233781
C9-4.0
C10-7.6596963e-06
C11-6.0
C122.57013206e-06
C13-8.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 1.9638e-06 1.114e-08 1.9136e-12 8.1195e-07 8.2924e-10 0.19938
nd
1.883000
Vd
40.688965
density
value: 5410
thermal expansion
value: 6.2e-06, temperature range: 243 343
dPgF
-0.0088

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 2.84e-06 K⁻¹ at 633 nm, dn/dT = 1.61e-06 K⁻¹ at 1310 nm, dn/dT = 1.51e-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-LASF08A (HIKARI), J-LASF08A: n and k versus wavelength
λ (µm)nk
0.3650151.9393695.760230e-07
0.3666011.9384895.340524e-07
0.3681931.937624.918995e-07
0.3697931.9367614.495634e-07
0.371.9366514.440800e-07
0.3713991.9359134.241778e-07
0.3730131.9350744.012298e-07
0.3746331.9342463.781821e-07
0.3762611.9334283.550342e-07
0.3778951.9326193.317858e-07
0.3795371.931823.084364e-07
0.381.9315963.018500e-07
0.3811861.931032.919742e-07
0.3828421.9302492.781817e-07
0.3845051.9294772.643293e-07
0.3861751.9287152.504167e-07
0.3878531.9279612.364437e-07
0.3895381.9272162.224099e-07
0.391.9270132.185600e-07
0.391231.9264792.129979e-07
0.392931.9257512.053123e-07
0.3946371.9250311.975934e-07
0.3963511.924321.898409e-07
0.3980731.9236161.820547e-07
0.3998021.9229211.742347e-07
0.41.9228421.733400e-07
0.4015391.9222331.696980e-07
0.4032831.9215531.655699e-07
0.4050351.920881.614239e-07
0.4067951.9202151.572599e-07
0.4085621.9195581.530778e-07
0.4103371.9189081.488775e-07
0.412121.9182651.446590e-07
0.413911.9176291.404222e-07
0.4157081.9171.361669e-07
0.4175141.9163771.318932e-07
0.4193281.9157621.276009e-07
0.421.9155361.260100e-07
0.4211491.9151541.248974e-07
0.4229791.9145521.231263e-07
0.4248171.9139561.213476e-07
0.4266621.9133671.195612e-07
0.4285161.9127841.177670e-07
0.4303771.9122081.159650e-07
0.4322471.9116381.141551e-07
0.4341251.9110731.123374e-07
0.436011.9105151.105119e-07
0.4379051.9099631.086783e-07
0.4398071.9094161.068369e-07
0.441.9093611.066500e-07
0.4417181.9088761.054500e-07
0.4436371.9083411.041093e-07
0.4455641.9078121.027629e-07
0.4474991.9072881.014105e-07
0.4494431.9067691.000523e-07
0.4513961.9062579.868822e-08
0.4533571.9057499.731819e-08
0.4553261.9052479.594221e-08
0.4573041.904759.456025e-08
0.4592911.9042589.317228e-08
0.461.9040849.267700e-08
0.4612861.9037719.167956e-08
0.463291.9032899.012571e-08
0.4653031.9028128.856511e-08
0.4673241.902348.699773e-08
0.4693541.9018728.542354e-08
0.4713931.901418.384251e-08
0.4734411.9009528.225461e-08
0.4754981.9004998.065981e-08
0.4775641.900057.905809e-08
0.4796381.8996067.744941e-08
0.481.8995297.716900e-08
0.4817221.8991667.639865e-08
0.4838151.8987317.546247e-08
0.4859171.89837.452223e-08
0.4880271.8978747.357790e-08
0.4901481.8974517.262947e-08
0.4922771.8970337.167693e-08
0.4944151.8966197.072024e-08
0.4965631.8962096.975939e-08
0.4987211.8958036.879438e-08
0.51.8955656.822200e-08
0.5008871.8954016.810643e-08
0.5030631.8950046.782295e-08
0.5052481.8946096.753823e-08
0.5074431.8942196.725228e-08
0.5096481.8938336.696508e-08
0.5118621.893456.667664e-08
0.5140861.8930716.638694e-08
0.5163191.8926966.609598e-08
0.5185621.8923256.580376e-08
0.5208151.8919576.551028e-08
0.5230771.8915926.521551e-08
0.5253491.8912316.491947e-08
0.5276321.8908746.462214e-08
0.5299241.890526.432351e-08
0.5322261.8901696.402360e-08
0.5345381.8898216.372237e-08
0.536861.8894776.341984e-08
0.5391931.8891366.311600e-08
0.5415351.8887996.281083e-08
0.5438871.8884646.250434e-08
0.546251.8881336.219652e-08
0.5486231.8878056.188736e-08
0.551.8876176.170800e-08
0.5510071.887486.172348e-08
0.55341.8871586.176030e-08
0.5558041.8868396.179727e-08
0.5582191.8865236.183441e-08
0.5606441.8862096.187170e-08
0.563081.8858996.190916e-08
0.5655261.8855926.194679e-08
0.5679821.8852876.198457e-08
0.570451.8849856.202252e-08
0.5729281.8846866.206063e-08
0.5754171.884396.209891e-08
0.5779171.8840976.213736e-08
0.5804271.8838066.217597e-08
0.5829491.8835176.221475e-08
0.5854811.8832326.225370e-08
0.5880251.8829496.229282e-08
0.5905791.8826686.233211e-08
0.5931451.882396.237157e-08
0.5957221.8821156.241120e-08
0.598311.8818426.245100e-08
0.61.8816656.247700e-08
0.6009091.8815716.247644e-08
0.6035191.8813036.247482e-08
0.6061411.8810376.247319e-08
0.6087741.8807746.247156e-08
0.6114191.8805136.246992e-08
0.6140751.8802546.246827e-08
0.6167431.8799976.246662e-08
0.6194221.8797436.246496e-08
0.6221131.8794916.246329e-08
0.6248161.8792416.246161e-08
0.627531.8789936.245993e-08
0.6302561.8787486.245824e-08
0.6329941.8785046.245654e-08
0.6357441.8782636.245484e-08
0.6385061.8780236.245313e-08
0.641281.8777866.245141e-08
0.6440661.8775516.244968e-08
0.6468641.8773186.244794e-08
0.6496741.8770876.244620e-08
0.651.877066.244600e-08
0.6524961.8768576.240447e-08
0.6553311.876636.235730e-08
0.6581781.8764046.230993e-08
0.6610371.8761816.226235e-08
0.6639081.8759596.221456e-08
0.6667931.8757396.216657e-08
0.6696891.8755216.211837e-08
0.6725991.8753056.206996e-08
0.6755211.8750916.202134e-08
0.6784551.8748786.197251e-08
0.6814031.8746676.192346e-08
0.6843631.8744586.187420e-08
0.6873361.8742516.182473e-08
0.6903221.8740456.177505e-08
0.6933211.8738416.172514e-08
0.6963331.8736386.167503e-08
0.6993581.8734376.162469e-08
0.71.8733956.161400e-08
0.7023961.8732386.353077e-08
0.7054471.873046.597205e-08
0.7085121.8728446.842393e-08
0.711591.872657.088647e-08
0.7146811.8724577.335971e-08
0.7177861.8722657.584369e-08
0.7209041.8720757.833846e-08
0.7240361.8718868.084406e-08
0.7271811.8716998.336056e-08
0.730341.8715148.588798e-08
0.7335131.8713298.842639e-08
0.73671.8711479.097582e-08
0.73991.8709659.353633e-08
0.7431141.8707859.610796e-08
0.7463421.8706069.869076e-08
0.7495851.8704291.012848e-07
0.7528411.8702531.038901e-07
0.7561121.8700781.065067e-07
0.7593961.8699051.091347e-07
0.7626951.8697331.117741e-07
0.7660091.8695621.144249e-07
0.7693361.8693921.170873e-07
0.7726791.8692241.197612e-07
0.7760351.8690571.224468e-07
0.7794071.8688911.251440e-07
0.7827931.8687261.278530e-07
0.7861931.8685621.305737e-07
0.7896091.86841.333062e-07
0.7930391.8682381.360506e-07
0.7964841.8680781.388069e-07
0.7999441.8679191.415752e-07
0.81.8679161.416200e-07
0.8034191.8677611.370227e-07
0.8069091.8676041.323300e-07
0.8104151.8674481.276168e-07
0.8139351.8672931.228832e-07
0.8174711.8671391.181289e-07
0.8210231.8669871.133541e-07
0.8245891.8668351.085585e-07
0.8281721.8666841.037420e-07
0.8317691.8665359.890468e-08
0.8353831.8663869.404630e-08
0.8390121.8662388.916682e-08
0.8426571.8660918.426614e-08
0.8463171.8659457.934417e-08
0.8499941.86587.440082e-08
0.8536871.8656566.943599e-08
0.8573951.8655136.444959e-08
0.861121.8653715.944154e-08
0.8648611.8652295.441172e-08
0.8686181.8650894.936006e-08
0.8723911.8649494.428645e-08
0.8761811.864813.919080e-08
0.8799881.8646723.407301e-08
0.8838111.8645352.893299e-08
0.887651.8643982.377064e-08
0.8915061.8642631.858587e-08
0.8953791.8641281.337857e-08
0.8992691.8639948.148643e-09
0.91.8639697.165600e-09
0.9031751.863867.190880e-09
0.9070991.8637287.222116e-09
0.911041.8635967.253487e-09
0.9149981.8634657.284995e-09
0.9189721.8633347.316640e-09
0.9229651.8632047.348422e-09
0.9269741.8630757.380342e-09
0.9310011.8629477.412401e-09
0.9350461.8628197.444599e-09
0.9391081.8626927.476937e-09
0.9431881.8625667.509416e-09
0.9472851.862447.542036e-09
0.95141.8623157.574797e-09
0.9555331.862197.607701e-09
0.9596841.8620667.640747e-09
0.9638531.8619437.673937e-09
0.9680411.861827.707272e-09
0.9722461.8616987.740751e-09
0.976471.8615767.774375e-09
0.9807121.8614557.808146e-09
0.9849721.8613347.842063e-09
0.9892511.8612147.876128e-09
0.9935491.8610957.910341e-09
0.9978651.8609767.944702e-09
11.8609177.961700e-09
1.00221.8608578.189704e-09
1.006551.8607398.640959e-09
1.010931.8606229.094175e-09
1.015321.8605059.549359e-09
1.019731.8603881.000652e-08
1.024161.8602721.046567e-08
1.028611.8601561.092681e-08
1.033081.8600411.138996e-08
1.037561.8599261.185511e-08
1.042071.8598111.232229e-08
1.04661.8596971.279150e-08
1.051151.8595841.326275e-08
1.055711.859471.373604e-08
1.06031.8593581.421139e-08
1.06491.8592451.468881e-08
1.069531.8591331.516829e-08
1.074181.8590211.564987e-08
1.078841.8589091.613353e-08
1.083531.8587981.661930e-08
1.088241.8586871.710717e-08
1.092961.8585771.759717e-08
1.097711.8584671.808929e-08
1.102481.8583571.858355e-08
1.107271.8582471.907996e-08
1.112081.8581371.957852e-08
1.116911.8580282.007925e-08
1.121761.8579192.058216e-08
1.126641.8578112.108725e-08
1.131531.8577022.159454e-08
1.136451.8575942.210403e-08
1.141381.8574862.261573e-08
1.146341.8573792.312965e-08
1.151321.8572712.364581e-08
1.156321.8571642.416421e-08
1.161351.8570572.468486e-08
1.166391.856952.520778e-08
1.171461.8568432.573296e-08
1.176551.8567362.626043e-08
1.181661.856632.679019e-08
1.186791.8565232.732225e-08
1.191951.8564172.785662e-08
1.197131.8563112.839331e-08
1.21.8562522.869100e-08
1.202331.8562052.874667e-08
1.207551.8560992.887156e-08
1.21281.8559932.899699e-08
1.218071.8558882.912296e-08
1.223361.8557822.924948e-08
1.228671.8556762.937656e-08
1.234011.8555712.950418e-08
1.239371.8554662.963236e-08
1.244751.855362.976109e-08
1.250161.8552552.989038e-08
1.255591.855153.002024e-08
1.261051.8550443.015066e-08
1.266531.8549393.028164e-08
1.272031.8548343.041320e-08
1.277551.8547293.054533e-08
1.28311.8546233.067803e-08
1.288681.8545183.081130e-08
1.294281.8544133.094516e-08
1.29991.8543083.107960e-08
1.305551.8542023.121462e-08
1.311221.8540973.135023e-08
1.316911.8539913.148642e-08
1.322641.8538863.162321e-08
1.328381.853783.176059e-08
1.334151.8536743.189857e-08
1.339951.8535693.203715e-08
1.345771.8534633.217633e-08
1.351621.8533573.231612e-08
1.357491.853253.245651e-08
1.363381.8531443.259752e-08
1.369311.8530383.273913e-08
1.375261.8529313.288136e-08
1.381231.8528253.302421e-08
1.387231.8527183.316768e-08
1.393261.8526113.331177e-08
1.399311.8525033.345649e-08
1.41.8524913.347300e-08
1.405391.8523963.463559e-08
1.411491.8522883.595285e-08
1.417631.852183.727583e-08
1.423781.8520723.860455e-08
1.429971.8519643.993905e-08
1.436181.8518564.127935e-08
1.442421.8517474.262547e-08
1.448691.8516384.397744e-08
1.454981.8515294.533528e-08
1.46131.8514194.669901e-08
1.467651.8513094.806868e-08
1.474031.8511994.944429e-08
1.480431.8510895.082588e-08
1.486861.8509785.221347e-08
1.493321.8508675.360709e-08
1.499811.8507565.500676e-08
1.506321.8506445.641252e-08
1.512871.8505325.782438e-08
1.519441.850425.924237e-08
1.526041.8503076.066653e-08
1.532671.8501946.209687e-08
1.539331.8500816.353342e-08
1.546011.8499676.497622e-08
1.552731.8498536.642528e-08
1.559481.8497396.788064e-08
1.566251.8496246.934232e-08
1.573051.8495087.081035e-08
1.579891.8493927.228476e-08
1.586751.8492767.376558e-08
1.593641.8491597.525282e-08
1.61.8490527.662400e-08
1.600571.8490427.673311e-08
1.607521.8489247.806904e-08
1.61451.8488067.941077e-08
1.621521.8486888.075833e-08
1.628561.8485698.211174e-08
1.635641.8484498.347103e-08
1.642741.8483298.483623e-08
1.649881.8482088.620736e-08
1.657051.8480878.758444e-08
1.664251.8479658.896751e-08
1.671481.8478439.035659e-08
1.678741.847729.175170e-08
1.686031.8475979.315287e-08
1.693351.8474739.456012e-08
1.700711.8473489.597350e-08
1.70811.8472239.739301e-08
1.715521.8470979.881868e-08
1.722971.8469711.002506e-07
1.730461.8468441.016886e-07
1.737971.8467161.031330e-07
1.745521.8465881.045836e-07
1.753111.8464591.060405e-07
1.760721.8463291.075038e-07
1.768371.8461991.089734e-07
1.776051.8460681.104493e-07
1.783771.8459361.119317e-07
1.791521.8458031.134206e-07
1.79931.845671.149159e-07
1.81.8456581.150500e-07
1.807121.8455361.252972e-07
1.814971.8454011.365980e-07
1.822851.8452661.479480e-07
1.830771.845131.593472e-07
1.838731.8449921.707960e-07
1.846711.8448551.822945e-07
1.854741.8447161.938430e-07
1.862791.8445762.054416e-07
1.870891.8444362.170907e-07
1.879011.8442952.287903e-07
1.887181.8441532.405408e-07
1.895371.844012.523423e-07
1.903611.8438662.641950e-07
1.911881.8437222.760993e-07
1.920181.8435762.880553e-07
1.928531.843433.000632e-07
1.93691.8432833.121233e-07
1.945321.8431343.242358e-07
1.953771.8429853.364009e-07
1.962261.8428353.486188e-07
1.970781.8426843.608898e-07
1.979341.8425313.732142e-07
1.987941.8423783.855920e-07
1.996581.8422243.980237e-07
21.8421634.029500e-07
2.005251.8420694.188603e-07
2.013961.8419134.452533e-07
2.022711.8417554.717610e-07
2.03151.8415974.983838e-07
2.040321.8414385.251223e-07
2.049191.8412775.519769e-07
2.058091.8411155.789482e-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
—