Optical constants

Refractive index of J-LASF021HS (HIKARI)

J-LASF021HS: 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
1.85025
Extinction coefficient k
6.70273e-08
Permittivity ε1
3.42344
Permittivity ε2
2.48035e-07
Absorption coefficient α
0.0143344 cm⁻¹
Penetration depth δ = λ/(2πk)
1.39524e+09 nm
Abbe number Vd
32.353
Chromatic dispersion dn/dλ
-0.132645 µm⁻¹
Group index ng
1.9282
Group velocity dispersion
263.147 fs²/mm
Dispersion parameter D
-1435.6 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-LASF021HS (HIKARI): J-LASF021HS
mat = ls.fetch_refractiveindex("specs", "HIKARI-optical", "J-LASF021HS", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mat.range_nm)  # (388.865, 2058.09) nm
eps = mat.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=3.30477446−0.0145925795⁢λ2.0+0.0359916632⁢λ−2.0+0.00349591839⁢λ−4.0−0.000743189237⁢λ−6.0+0.000155265866⁢λ−8.0−1.52961037×10-5⁢λ−10.0+6.59677491×10-7⁢λ−12.0

Valid from 0.388865 to 2.05809 µm.

Coefficients as stored
CiValue
C13.30477446
C2-0.0145925795
C32.0
C40.0359916632
C5-2.0
C60.00349591839
C7-4.0
C8-0.000743189237
C9-6.0
C100.000155265866
C11-8.0
C12-1.52961037e-05
C13-10.0
C146.59677491e-07
C15-12.0

Comments and conditions

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 1.3032e-07 1.0819e-08 2.8653e-12 9.0546e-07 1.2613e-09 0.26464
nd
1.850260
Vd
32.352867
density
value: 4370
thermal expansion
value: 7e-06, temperature range: 243 343
dPgF
0.0046
resistance
phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 1.87e-06 K⁻¹ at 633 nm, dn/dT = 4.31e-07 K⁻¹ at 1310 nm, dn/dT = 3.27e-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 419 wavelengths, the same grid as the API and the library
J-LASF021HS (HIKARI), J-LASF021HS: n and k versus wavelength
λ (µm)nk
0.3888651.9071447.121170e-07
0.391.9064566.539800e-07
0.3904921.906166.418150e-07
0.3921271.905196.014392e-07
0.3937681.9042335.608945e-07
0.3954151.903295.201802e-07
0.397071.902364.792954e-07
0.3987321.9014434.382395e-07
0.41.9007544.069100e-07
0.4004011.9005384.032587e-07
0.4020761.8996463.879869e-07
0.4037591.8987663.726511e-07
0.4054491.8978973.572512e-07
0.4071451.897043.417868e-07
0.4088491.8961943.262577e-07
0.410561.8953593.106636e-07
0.4122781.8945352.950043e-07
0.4140041.8937222.792794e-07
0.4157361.8929192.634887e-07
0.4174761.8921262.476319e-07
0.4192231.8913442.317088e-07
0.421.8912.246300e-07
0.4209781.8905712.211718e-07
0.4227391.8898082.149404e-07
0.4245091.8890552.086830e-07
0.4262851.888312.023994e-07
0.4280691.8875751.960895e-07
0.4298611.8868491.897532e-07
0.431661.8861321.833903e-07
0.4334661.8854241.770009e-07
0.435281.8847241.705847e-07
0.4371021.8840331.641416e-07
0.4389311.8833491.576716e-07
0.441.8829551.538900e-07
0.4407681.8826741.525526e-07
0.4426121.8820071.493393e-07
0.4444651.8813481.461126e-07
0.4463251.8806961.428724e-07
0.4481931.8800531.396187e-07
0.4500681.8794161.363513e-07
0.4519521.8787871.330702e-07
0.4538431.8781661.297754e-07
0.4557421.8775511.264668e-07
0.457651.8769431.231444e-07
0.4595651.8763431.198081e-07
0.461.8762081.190500e-07
0.4614881.8757491.173876e-07
0.4634191.8751621.152301e-07
0.4653591.8745811.130635e-07
0.4673061.8740071.108878e-07
0.4692621.873441.087031e-07
0.4712261.8728791.065092e-07
0.4731981.8723241.043061e-07
0.4751781.8717751.020939e-07
0.4771671.8712329.987231e-08
0.4791641.8706959.764146e-08
0.481.8704729.670700e-08
0.4811691.8701649.575309e-08
0.4831821.8696399.410964e-08
0.4852051.8691199.245932e-08
0.4872351.8686059.080209e-08
0.4892741.8680978.913793e-08
0.4913221.8675948.746680e-08
0.4933781.8670968.578867e-08
0.4954431.8666048.410353e-08
0.4975161.8661178.241133e-08
0.4995981.8656358.071205e-08
0.51.8655438.038400e-08
0.5016891.8651587.990319e-08
0.5037881.8646877.930545e-08
0.5058971.864227.870521e-08
0.5080141.8637587.810246e-08
0.510141.8633017.749719e-08
0.5122751.8628487.688939e-08
0.5144191.86247.627904e-08
0.5165711.8619577.566613e-08
0.5187331.8615197.505067e-08
0.5209041.8610857.443262e-08
0.5230841.8606557.381199e-08
0.5252731.860237.318876e-08
0.5274711.8598097.256293e-08
0.5296791.8593927.193447e-08
0.5318951.8589797.130339e-08
0.5341211.8585717.066966e-08
0.5363571.8581677.003329e-08
0.5386011.8577676.939424e-08
0.5408551.857376.875253e-08
0.5431191.8569786.810813e-08
0.5453921.8565896.746103e-08
0.5476741.8562056.681122e-08
0.5499661.8558246.615870e-08
0.551.8558186.614900e-08
0.5522681.8554476.620197e-08
0.5545791.8550736.625596e-08
0.55691.8547036.631017e-08
0.559231.8543376.636462e-08
0.561571.8539746.641929e-08
0.5639211.8536156.647419e-08
0.5662811.8532596.652931e-08
0.568651.8529076.658467e-08
0.571031.8525586.664027e-08
0.573421.8522126.669609e-08
0.575821.851876.675215e-08
0.5782291.8515316.680844e-08
0.5806491.8511956.686497e-08
0.5830791.8508626.692173e-08
0.5855191.8505336.697873e-08
0.587971.8502066.703597e-08
0.590431.8498826.709345e-08
0.5929011.8495626.715117e-08
0.5953821.8492446.720913e-08
0.5978741.848936.726734e-08
0.61.8486656.731700e-08
0.6003761.8486186.731976e-08
0.6028891.8483096.733820e-08
0.6054121.8480036.735672e-08
0.6079451.84776.737532e-08
0.610491.84746.739399e-08
0.6130441.8471026.741275e-08
0.615611.8468076.743158e-08
0.6181861.8465146.745049e-08
0.6207731.8462256.746948e-08
0.6233711.8459376.748854e-08
0.625981.8456536.750769e-08
0.62861.8453716.752692e-08
0.631231.8450916.754623e-08
0.6338721.8448146.756562e-08
0.6365251.844546.758509e-08
0.6391881.8442676.760464e-08
0.6418631.8439986.762428e-08
0.644551.843736.764399e-08
0.6472471.8434656.766379e-08
0.6499561.8432026.768367e-08
0.651.8431986.768400e-08
0.6526761.8429426.796259e-08
0.6554071.8426846.824698e-08
0.658151.8424286.853257e-08
0.6609041.8421746.881934e-08
0.663671.8419226.910732e-08
0.6664471.8416736.939651e-08
0.6692361.8414256.968690e-08
0.6720371.841186.997851e-08
0.674851.8409377.027134e-08
0.6776741.8406957.056540e-08
0.680511.8404567.086068e-08
0.6833581.8402197.115720e-08
0.6862171.8399847.145497e-08
0.6890891.8397517.175397e-08
0.6919731.839527.205423e-08
0.6948691.839297.235575e-08
0.6977771.8390637.265853e-08
0.71.8388917.289000e-08
0.7006971.8388377.291764e-08
0.7036291.8386137.303394e-08
0.7065741.8383917.315073e-08
0.7095311.8381717.326800e-08
0.71251.8379537.338576e-08
0.7154821.8377367.350402e-08
0.7184761.8375227.362277e-08
0.7214831.8373087.374202e-08
0.7245021.8370977.386177e-08
0.7275341.8368877.398202e-08
0.7305791.8366797.410277e-08
0.7336371.8364737.422403e-08
0.7367071.8362687.434579e-08
0.739791.8360657.446806e-08
0.7428861.8358637.459085e-08
0.7459951.8356637.471415e-08
0.7491171.8354647.483797e-08
0.7522521.8352677.496230e-08
0.75541.8350727.508715e-08
0.7585611.8348787.521253e-08
0.7617361.8346857.533843e-08
0.7649231.8344947.546486e-08
0.7681251.8343047.559182e-08
0.7713391.8341167.571931e-08
0.7745671.8339297.584733e-08
0.7778091.8337447.597589e-08
0.7810641.833567.610498e-08
0.7843321.8333777.623462e-08
0.7876151.8331967.636480e-08
0.7909111.8330167.649552e-08
0.7942211.8328377.662679e-08
0.7975441.8326597.675861e-08
0.81.832537.685600e-08
0.8008821.8324837.668548e-08
0.8042341.8323087.603761e-08
0.8075991.8321357.538703e-08
0.8109791.8319627.473372e-08
0.8143731.8317917.407769e-08
0.8177811.8316217.341890e-08
0.8212041.8314527.275736e-08
0.824641.8312847.209305e-08
0.8280911.8311187.142596e-08
0.8315571.8309527.075608e-08
0.8350371.8307887.008340e-08
0.8385311.8306256.940790e-08
0.8420411.8304626.872957e-08
0.8455641.8303016.804840e-08
0.8491031.8301416.736439e-08
0.8526561.8299826.667751e-08
0.8562251.8298256.598775e-08
0.8598081.8296686.529511e-08
0.8634061.8295126.459958e-08
0.867021.8293576.390113e-08
0.8706481.8292036.319975e-08
0.8742921.829056.249545e-08
0.877951.8288986.178819e-08
0.8816251.8287476.107798e-08
0.8853141.8285976.036479e-08
0.8890191.8284485.964862e-08
0.892741.82835.892945e-08
0.8964761.8281525.820727e-08
0.91.8280155.752600e-08
0.9002271.8280065.759530e-08
0.9039951.827865.874412e-08
0.9077781.8277155.989776e-08
0.9115771.8275726.105622e-08
0.9153921.8274286.221953e-08
0.9192231.8272866.338771e-08
0.9230691.8271456.456078e-08
0.9269321.8270046.573875e-08
0.9308121.8268646.692166e-08
0.9347071.8267256.810952e-08
0.9386191.8265876.930234e-08
0.9425471.8264497.050016e-08
0.9464911.8263127.170299e-08
0.9504521.8261767.291086e-08
0.954431.8260417.412378e-08
0.9584241.8259067.534178e-08
0.9624351.8257727.656487e-08
0.9664631.8256387.779308e-08
0.9705071.8255067.902644e-08
0.9745691.8253748.026495e-08
0.9786471.8252428.150865e-08
0.9827431.8251128.275755e-08
0.9868551.8249818.401168e-08
0.9909851.8248528.527106e-08
0.9951321.8247238.653570e-08
0.9992971.8245958.780564e-08
11.8245738.802000e-08
1.003481.8244678.748854e-08
1.007681.824348.684703e-08
1.01191.8242138.620283e-08
1.016131.8240878.555594e-08
1.020381.8239628.490634e-08
1.024651.8238378.425402e-08
1.028941.8237128.359897e-08
1.033251.8235888.294117e-08
1.037571.8234658.228063e-08
1.041911.8233428.161732e-08
1.046271.8232198.095124e-08
1.050651.8230978.028237e-08
1.055051.8229767.961070e-08
1.059461.8228547.893621e-08
1.06391.8227347.825891e-08
1.068351.8226147.757877e-08
1.072821.8224947.689579e-08
1.077311.8223747.620994e-08
1.081821.8222557.552123e-08
1.086351.8221377.482963e-08
1.090891.8220187.413514e-08
1.095461.8219017.343775e-08
1.100041.8217837.273743e-08
1.104651.8216667.203419e-08
1.109271.8215497.132800e-08
1.113911.8214337.061885e-08
1.118571.8213176.990674e-08
1.123251.8212016.919165e-08
1.127961.8210856.847356e-08
1.132681.820976.775247e-08
1.137421.8208556.702837e-08
1.142181.820746.630123e-08
1.146961.8206266.557105e-08
1.151761.8205126.483781e-08
1.156581.8203986.410151e-08
1.161421.8202846.336212e-08
1.166281.8201716.261964e-08
1.171161.8200586.187405e-08
1.176061.8199456.112534e-08
1.180981.8198326.037350e-08
1.185921.819725.961851e-08
1.190891.8196075.886037e-08
1.195871.8194955.809905e-08
1.21.8194035.746800e-08
1.200871.8193835.750984e-08
1.20591.8192715.775051e-08
1.210951.819165.799220e-08
1.216011.8190485.823489e-08
1.22111.8189375.847860e-08
1.226211.8188265.872333e-08
1.231341.8187145.896908e-08
1.23651.8186035.921586e-08
1.241671.8184925.946367e-08
1.246871.8183825.971253e-08
1.252091.8182715.996242e-08
1.257331.818166.021336e-08
1.262591.818056.046534e-08
1.267871.8179396.071839e-08
1.273181.8178296.097249e-08
1.278511.8177186.122765e-08
1.283861.8176086.148389e-08
1.289231.8174976.174119e-08
1.294621.8173876.199958e-08
1.300041.8172776.225904e-08
1.305481.8171666.251959e-08
1.310951.8170566.278123e-08
1.316431.8169466.304396e-08
1.321941.8168356.330780e-08
1.327471.8167256.357274e-08
1.333031.8166146.383878e-08
1.338611.8165046.410594e-08
1.344211.8163936.437422e-08
1.349841.8162836.464362e-08
1.355481.8161726.491415e-08
1.361161.8160616.518581e-08
1.366851.815956.545861e-08
1.372571.8158396.573255e-08
1.378321.8157286.600764e-08
1.384091.8156176.628387e-08
1.389881.8155066.656127e-08
1.395691.8153946.683982e-08
1.41.8153126.704600e-08
1.401541.8152836.790952e-08
1.40741.8151717.120771e-08
1.413291.8150597.451970e-08
1.419211.8149477.784555e-08
1.425141.8148358.118532e-08
1.431111.8147228.453907e-08
1.43711.814618.790685e-08
1.443111.8144979.128873e-08
1.449151.8143849.468476e-08
1.455221.814279.809500e-08
1.461311.8141571.015195e-07
1.467421.8140431.049584e-07
1.473561.8139291.084116e-07
1.479731.8138151.118793e-07
1.485921.8137011.153615e-07
1.492141.8135861.188582e-07
1.498381.8134711.223697e-07
1.504661.8133551.258958e-07
1.510951.813241.294366e-07
1.517281.8131241.329923e-07
1.523631.8130081.365628e-07
1.531.8128911.401483e-07
1.53641.8127741.437488e-07
1.542831.8126571.473644e-07
1.549291.812541.509951e-07
1.555771.8124221.546410e-07
1.562291.8123041.583022e-07
1.568821.8121851.619786e-07
1.575391.8120661.656705e-07
1.581981.8119461.693778e-07
1.58861.8118271.731006e-07
1.595251.8117061.768390e-07
1.61.8116211.795100e-07
1.601931.8115861.809911e-07
1.608631.8114651.861461e-07
1.615361.8113431.913227e-07
1.622121.8112211.965209e-07
1.628911.8110992.017409e-07
1.635731.8109762.069827e-07
1.642571.8108532.122465e-07
1.649451.8107292.175323e-07
1.656351.8106052.228402e-07
1.663281.810482.281703e-07
1.670241.8103552.335228e-07
1.677231.8102292.388976e-07
1.684251.8101032.442949e-07
1.69131.8099762.497149e-07
1.698381.8098482.551575e-07
1.705491.8097212.606228e-07
1.712621.8095922.661111e-07
1.719791.8094632.716223e-07
1.726991.8093332.771566e-07
1.734211.8092032.827140e-07
1.741471.8090722.882947e-07
1.748761.8089412.938988e-07
1.756081.8088092.995263e-07
1.763431.8086763.051773e-07
1.770811.8085433.108521e-07
1.778221.8084093.165505e-07
1.785661.8082743.222728e-07
1.793131.8081393.280191e-07
1.81.8080143.333000e-07
1.800641.8080033.341488e-07
1.808171.8078663.441989e-07
1.815741.8077293.542911e-07
1.823341.8075913.644255e-07
1.830971.8074523.746024e-07
1.838631.8073123.848218e-07
1.846331.8071723.950840e-07
1.854051.8070314.053892e-07
1.861811.8068894.157374e-07
1.86961.8067474.261290e-07
1.877431.8066034.365641e-07
1.885281.8064594.470428e-07
1.893171.8063144.575654e-07
1.90111.8061694.681320e-07
1.909051.8060224.787429e-07
1.917041.8058754.893981e-07
1.925061.8057275.000980e-07
1.933121.8055785.108426e-07
1.941211.8054285.216322e-07
1.949331.8052775.324669e-07
1.957491.8051255.433470e-07
1.965681.8049735.542726e-07
1.973911.8048195.652440e-07
1.982171.8046655.762612e-07
1.990471.804515.873246e-07
1.99881.8043535.984343e-07
21.8043316.000400e-07
2.007161.8041966.321871e-07
2.015561.8040386.698965e-07
2.0241.8038797.077636e-07
2.032471.8037197.457892e-07
2.040971.8035587.839739e-07
2.049511.8033958.223184e-07
2.058091.8032328.608234e-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
—