Optical constants

Refractive index of Q-SK52S (HIKARI)

Q-SK52S: 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
1.58286
Extinction coefficient k
1.65641e-08
Permittivity ε1
2.50544
Permittivity ε2
5.24372e-08
Absorption coefficient α
0.00354238 cm⁻¹
Penetration depth δ = λ/(2πk)
5.64592e+09 nm
Abbe number Vd
59.505
Chromatic dispersion dn/dλ
-0.0506716 µm⁻¹
Group index ng
1.61263
Group velocity dispersion
87.5801 fs²/mm
Dispersion parameter D
-477.796 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

# Q-SK52S (HIKARI): Q-SK52S
hikari_q_sk52s = ls.fetch_refractiveindex("specs", "HIKARI-optical", "Q-SK52S", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hikari_q_sk52s.range_nm)  # (365.015, 2058.09) nm
eps = hikari_q_sk52s.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=2.46682919−0.0100692159⁢λ2.0−0.000110027728⁢λ4.0+0.0140726622⁢λ−2.0+0.000136654094⁢λ−4.0+8.57488472×10-6⁢λ−6.0−1.75474987×10-7⁢λ−8.0

Valid from 0.365015 to 2.05809 µm.

Coefficients as stored
CiValue
C12.46682919
C2-0.0100692159
C32.0
C4-0.000110027728
C54.0
C60.0140726622
C7-2.0
C80.000136654094
C9-4.0
C108.57488472e-06
C11-6.0
C12-1.75474987e-07
C13-8.0

Comments and conditions

For mold lens

Conditions

temperature
296 K

Properties

thermal dispersion
type: formula A, coefficients: 5.0538e-06 1.23472e-08 1.77584e-12 4.97469e-07 5.44575e-10 0.195505
nd
1.582860
Vd
59.504606
density
value: 2800
thermal expansion
value: 6.2e-06, temperature range: 243 343
dPgF
-0.0037
resistance
phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 296.0 K): dn/dT = 3.05e-06 K⁻¹ at 633 nm, dn/dT = 2.49e-06 K⁻¹ at 1310 nm, dn/dT = 2.44e-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
Q-SK52S (HIKARI), Q-SK52S: n and k versus wavelength
λ (µm)nk
0.3650151.6068218.243703e-08
0.3666011.606477.704911e-08
0.3681931.6061227.163777e-08
0.3697931.6057776.620293e-08
0.371.6057336.549900e-08
0.3713991.6054366.187063e-08
0.3730131.6050995.768697e-08
0.3746331.6047645.348513e-08
0.3762611.6044344.926503e-08
0.3778951.6041064.502661e-08
0.3795371.6037824.076977e-08
0.381.6036923.956900e-08
0.3811861.6034613.894757e-08
0.3828421.6031443.807968e-08
0.3845051.6028293.720802e-08
0.3861751.6025183.633257e-08
0.3878531.602213.545332e-08
0.3895381.6019053.457026e-08
0.391.6018223.432800e-08
0.391231.6016033.285592e-08
0.392931.6013043.082185e-08
0.3946371.6010082.877894e-08
0.3963511.6007142.672715e-08
0.3980731.6004242.466645e-08
0.3998021.6001372.259680e-08
0.41.6001042.236000e-08
0.4015391.5998522.244603e-08
0.4032831.599572.254354e-08
0.4050351.5992912.264147e-08
0.4067951.5990152.273983e-08
0.4085621.5987412.283862e-08
0.4103371.598472.293784e-08
0.412121.5982022.303748e-08
0.413911.5979362.313756e-08
0.4157081.5976732.323808e-08
0.4175141.5974122.333903e-08
0.4193281.5971542.344042e-08
0.421.597062.347800e-08
0.4211491.5968992.354225e-08
0.4229791.5966452.364453e-08
0.4248171.5963952.374724e-08
0.4266621.5961462.385041e-08
0.4285161.59592.395402e-08
0.4303771.5956572.405808e-08
0.4322471.5954152.416259e-08
0.4341251.5951762.426756e-08
0.436011.5949392.437299e-08
0.4379051.5947052.447887e-08
0.4398071.5944722.458521e-08
0.441.5944492.459600e-08
0.4417181.5942422.437563e-08
0.4436371.5940142.412943e-08
0.4455641.5937882.388217e-08
0.4474991.5935652.363383e-08
0.4494431.5933432.338440e-08
0.4513961.5931232.313390e-08
0.4533571.5929062.288231e-08
0.4553261.592692.262962e-08
0.4573041.5924762.237584e-08
0.4592911.5922652.212095e-08
0.461.592192.203000e-08
0.4612861.5920552.159779e-08
0.463291.5918472.092446e-08
0.4653031.5916422.024822e-08
0.4673241.5914381.956903e-08
0.4693541.5912361.888690e-08
0.4713931.5910351.820180e-08
0.4734411.5908371.751372e-08
0.4754981.590641.682266e-08
0.4775641.5904451.612859e-08
0.4796381.5902521.543151e-08
0.481.5902191.531000e-08
0.4817221.5900611.502113e-08
0.4838151.5898711.467008e-08
0.4859171.5896831.431750e-08
0.4880271.5894971.396339e-08
0.4901481.5893121.360774e-08
0.4922771.5891291.325055e-08
0.4944151.5889481.289180e-08
0.4965631.5887681.253150e-08
0.4987211.588591.216963e-08
0.51.5884851.195500e-08
0.5008871.5884131.189836e-08
0.5030631.5882381.175941e-08
0.5052481.5880651.161986e-08
0.5074431.5878931.147971e-08
0.5096481.5877221.133895e-08
0.5118621.5875531.119757e-08
0.5140861.5873861.105558e-08
0.5163191.587221.091298e-08
0.5185621.5870551.076975e-08
0.5208151.5868921.062591e-08
0.5230771.586731.048143e-08
0.5253491.586571.033633e-08
0.5276321.586411.019060e-08
0.5299241.5862531.004424e-08
0.5322261.5860969.897240e-09
0.5345381.5859419.749603e-09
0.536861.5857879.601324e-09
0.5391931.5856359.452400e-09
0.5415351.5854849.302830e-09
0.5438871.5853349.152610e-09
0.546251.5851859.001737e-09
0.5486231.5850388.850209e-09
0.551.5849538.762300e-09
0.5510071.5848928.971168e-09
0.55341.5847479.467847e-09
0.5558041.5846039.966683e-09
0.5582191.584461.046769e-08
0.5606441.5843191.097087e-08
0.563081.5841791.147623e-08
0.5655261.5840391.198379e-08
0.5679821.5839011.249356e-08
0.570451.5837651.300554e-08
0.5729281.5836291.351975e-08
0.5754171.5834941.403619e-08
0.5779171.583361.455487e-08
0.5804271.5832281.507580e-08
0.5829491.5830961.559900e-08
0.5854811.5829661.612447e-08
0.5880251.5828371.665223e-08
0.5905791.5827081.718227e-08
0.5931451.5825811.771462e-08
0.5957221.5824541.824929e-08
0.598311.5823291.878627e-08
0.61.5822481.913700e-08
0.6009091.5822051.926045e-08
0.6035191.5820811.961500e-08
0.6061411.5819591.997110e-08
0.6087741.5818372.032874e-08
0.6114191.5817162.068794e-08
0.6140751.5815972.104870e-08
0.6167431.5814782.141102e-08
0.6194221.581362.177492e-08
0.6221131.5812432.214040e-08
0.6248161.5811272.250747e-08
0.627531.5810122.287613e-08
0.6302561.5808972.324640e-08
0.6329941.5807832.361827e-08
0.6357441.5806712.399176e-08
0.6385061.5805592.436687e-08
0.641281.5804482.474361e-08
0.6440661.5803372.512199e-08
0.6468641.5802282.550201e-08
0.6496741.5801192.588368e-08
0.651.5801072.592800e-08
0.6524961.5800112.630714e-08
0.6553311.5799042.673772e-08
0.6581781.5797982.717016e-08
0.6610371.5796922.760449e-08
0.6639081.5795872.804070e-08
0.6667931.5794832.847880e-08
0.6696891.579382.891881e-08
0.6725991.5792772.936073e-08
0.6755211.5791752.980457e-08
0.6784551.5790733.025034e-08
0.6814031.5789733.069805e-08
0.6843631.5788733.114770e-08
0.6873361.5787733.159930e-08
0.6903221.5786753.205287e-08
0.6933211.5785773.250840e-08
0.6963331.5784793.296592e-08
0.6993581.5783833.342542e-08
0.71.5783623.352300e-08
0.7023961.5782873.409875e-08
0.7054471.5781913.483206e-08
0.7085121.5780963.556855e-08
0.711591.5780023.630824e-08
0.7146811.5779083.705115e-08
0.7177861.5778153.779728e-08
0.7209041.5777233.854665e-08
0.7240361.5776313.929928e-08
0.7271811.577544.005518e-08
0.730341.5774494.081436e-08
0.7335131.5773594.157684e-08
0.73671.5772694.234263e-08
0.73991.577184.311175e-08
0.7431141.5770914.388421e-08
0.7463421.5770034.466002e-08
0.7495851.5769154.543921e-08
0.7528411.5768284.622178e-08
0.7561121.5767424.700775e-08
0.7593961.5766564.779714e-08
0.7626951.576574.858995e-08
0.7660091.5764854.938621e-08
0.7693361.57645.018593e-08
0.7726791.5763165.098912e-08
0.7760351.5762325.179580e-08
0.7794071.5761495.260599e-08
0.7827931.5760665.341969e-08
0.7861931.5759835.423693e-08
0.7896091.5759015.505773e-08
0.7930391.575825.588208e-08
0.7964841.5757395.671002e-08
0.7999441.5756585.754155e-08
0.81.5756575.755500e-08
0.8034191.5755785.583209e-08
0.8069091.5754985.407338e-08
0.8104151.5754185.230703e-08
0.8139351.5753395.053300e-08
0.8174711.575264.875127e-08
0.8210231.5751814.696180e-08
0.8245891.5751034.516455e-08
0.8281721.5750264.335950e-08
0.8317691.5749484.154660e-08
0.8353831.5748713.972583e-08
0.8390121.5747943.789715e-08
0.8426571.5747183.606053e-08
0.8463171.5746423.421592e-08
0.8499941.5745663.236330e-08
0.8536871.5744913.050264e-08
0.8573951.5744162.863389e-08
0.861121.5743412.675702e-08
0.8648611.5742662.487200e-08
0.8686181.5741922.297879e-08
0.8723911.5741182.107736e-08
0.8761811.5740441.916767e-08
0.8799881.5739711.724968e-08
0.8838111.5738981.532335e-08
0.887651.5738251.338866e-08
0.8915061.5737521.144557e-08
0.8953791.573689.494029e-09
0.8992691.5736087.534015e-09
0.91.5735947.165600e-09
0.9031751.5735367.697287e-09
0.9070991.5734648.354232e-09
0.911041.5733939.014030e-09
0.9149981.5733219.676696e-09
0.9189721.573251.034224e-08
0.9229651.5731791.101068e-08
0.9269741.5731091.168201e-08
0.9310011.5730381.235627e-08
0.9350461.5729681.303345e-08
0.9391081.5728981.371358e-08
0.9431881.5728281.439666e-08
0.9472851.5727581.508271e-08
0.95141.5726891.577174e-08
0.9555331.5726191.646376e-08
0.9596841.572551.715879e-08
0.9638531.5724811.785684e-08
0.9680411.5724121.855792e-08
0.9722461.5723431.926205e-08
0.976471.5722751.996923e-08
0.9807121.5722062.067949e-08
0.9849721.5721382.139283e-08
0.9892511.5720692.210927e-08
0.9935491.5720012.282883e-08
0.9978651.5719332.355151e-08
11.5718992.390900e-08
1.00221.5718652.375111e-08
1.006551.5717972.343862e-08
1.010931.5717292.312477e-08
1.015321.5716612.280956e-08
1.019731.5715942.249298e-08
1.024161.5715262.217502e-08
1.028611.5714592.185568e-08
1.033081.5713912.153496e-08
1.037561.5713242.121284e-08
1.042071.5712562.088932e-08
1.04661.5711892.056440e-08
1.051151.5711222.023806e-08
1.055711.5710551.991031e-08
1.06031.5709871.958113e-08
1.06491.570921.925052e-08
1.069531.5708531.891848e-08
1.074181.5707861.858500e-08
1.078841.5707191.825006e-08
1.083531.5706521.791367e-08
1.088241.5705851.757582e-08
1.092961.5705171.723651e-08
1.097711.570451.689571e-08
1.102481.5703831.655344e-08
1.107271.5703161.620968e-08
1.112081.5702491.586443e-08
1.116911.5701811.551768e-08
1.121761.5701141.516942e-08
1.126641.5700471.481964e-08
1.131531.5699791.446835e-08
1.136451.5699121.411554e-08
1.141381.5698441.376119e-08
1.146341.5697771.340530e-08
1.151321.5697091.304786e-08
1.156321.5696411.268887e-08
1.161351.5695741.232832e-08
1.166391.5695061.196621e-08
1.171461.5694381.160252e-08
1.176551.5693691.123725e-08
1.181661.5693011.087040e-08
1.186791.5692331.050195e-08
1.191951.5691641.013190e-08
1.197131.5690969.760247e-09
1.21.5690589.554100e-09
1.202331.5690279.702538e-09
1.207551.5689581.003551e-08
1.21281.5688891.036994e-08
1.218071.568821.070581e-08
1.223361.5687511.104315e-08
1.228671.5686821.138195e-08
1.234011.5686121.172222e-08
1.239371.5685421.206397e-08
1.244751.5684721.240720e-08
1.250161.5684021.275193e-08
1.255591.5683321.309815e-08
1.261051.5682611.344588e-08
1.266531.5681911.379512e-08
1.272031.568121.414587e-08
1.277551.5680491.449815e-08
1.28311.5679781.485196e-08
1.288681.5679061.520731e-08
1.294281.5678341.556420e-08
1.29991.5677621.592264e-08
1.305551.567691.628264e-08
1.311221.5676181.664420e-08
1.316911.5675451.700733e-08
1.322641.5674721.737204e-08
1.328381.5673991.773834e-08
1.334151.5673251.810622e-08
1.339951.5672521.847570e-08
1.345771.5671781.884679e-08
1.351621.5671031.921949e-08
1.357491.5670291.959381e-08
1.363381.5669541.996976e-08
1.369311.5668782.034734e-08
1.375261.5668032.072656e-08
1.381231.5667272.110743e-08
1.387231.5666512.148995e-08
1.393261.5665742.187413e-08
1.399311.5664982.225998e-08
1.41.5664892.230400e-08
1.405391.5664212.342259e-08
1.411491.5663432.469000e-08
1.417631.5662652.596291e-08
1.423781.5661872.724136e-08
1.429971.5661082.852535e-08
1.436181.5660292.981493e-08
1.442421.565953.111010e-08
1.448691.565873.241091e-08
1.454981.565793.371736e-08
1.46131.565713.502949e-08
1.467651.5656293.634732e-08
1.474031.5655473.767088e-08
1.480431.5654663.900018e-08
1.486861.5653834.033526e-08
1.493321.5653014.167614e-08
1.499811.5652184.302284e-08
1.506321.5651344.437540e-08
1.512871.565054.573383e-08
1.519441.5649664.709816e-08
1.526041.5648814.846842e-08
1.532671.5647954.984463e-08
1.539331.564715.122682e-08
1.546011.5646235.261502e-08
1.552731.5645365.400924e-08
1.559481.5644495.540952e-08
1.566251.5643615.681589e-08
1.573051.5642735.822837e-08
1.579891.5641845.964698e-08
1.586751.5640946.107175e-08
1.593641.5640046.250271e-08
1.61.5639216.382200e-08
1.600571.5639146.421423e-08
1.607521.5638236.901641e-08
1.61451.5637317.383946e-08
1.621521.5636397.868346e-08
1.628561.5635468.354851e-08
1.635641.5634528.843469e-08
1.642741.5633589.334209e-08
1.649881.5632649.827082e-08
1.657051.5631681.032210e-07
1.664251.5630721.081926e-07
1.671481.5629761.131858e-07
1.678741.5628791.182008e-07
1.686031.5627811.232375e-07
1.693351.5626821.282961e-07
1.700711.5625831.333767e-07
1.70811.5624831.384793e-07
1.715521.5623831.436041e-07
1.722971.5622821.487512e-07
1.730461.562181.539206e-07
1.737971.5620771.591125e-07
1.745521.5619741.643270e-07
1.753111.561871.695641e-07
1.760721.5617651.748239e-07
1.768371.5616591.801066e-07
1.776051.5615531.854123e-07
1.783771.5614461.907410e-07
1.791521.5613381.960928e-07
1.79931.5612292.014679e-07
1.81.561222.019500e-07
1.807121.561122.062065e-07
1.814971.561012.109008e-07
1.822851.5608992.156154e-07
1.830771.5607872.203505e-07
1.838731.5606742.251062e-07
1.846711.560562.298825e-07
1.854741.5604462.346796e-07
1.862791.560332.394975e-07
1.870891.5602142.443364e-07
1.879011.5600972.491963e-07
1.887181.5599792.540773e-07
1.895371.559862.589795e-07
1.903611.559742.639030e-07
1.911881.559622.688478e-07
1.920181.5594982.738142e-07
1.928531.5593752.788021e-07
1.93691.5592522.838117e-07
1.945321.5591272.888431e-07
1.953771.5590022.938963e-07
1.962261.5588752.989715e-07
1.970781.5587473.040687e-07
1.979341.5586193.091881e-07
1.987941.5584893.143297e-07
1.996581.5583583.194937e-07
21.5583063.215400e-07
2.005251.5582273.435001e-07
2.013961.5580943.799290e-07
2.022711.557964.165161e-07
2.03151.5578254.532621e-07
2.040321.5576894.901678e-07
2.049191.5575515.272337e-07
2.058091.5574135.644608e-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
—