Optical constants

Refractive index of S-NPH3 (OHARA)

S-NPH3: n,k 0.36–2.4 µm

Data
formula 2 + tabulated k
Range
0.36–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength. Note: k data cover 400-2400 nm only; k = 0 elsewhere in the n range 360-2400 nm.

At one wavelength

Range 0.36–2.4 µm
Refractive index n
1.95905
Extinction coefficient k
2.53000e-08
Permittivity ε1
3.83788
Permittivity ε2
9.91281e-08
Absorption coefficient α
0.00541065 cm⁻¹
Penetration depth δ = λ/(2πk)
3.69641e+09 nm
Abbe number Vd
17.471
Chromatic dispersion dn/dλ
-0.269796 µm⁻¹
Group index ng
2.11758
Group velocity dispersion
595.042 fs²/mm
Dispersion parameter D
-3246.27 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

# S-NPH3 (OHARA): S-NPH3
ohara_s_nph3 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-NPH3", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_nph3.range_nm)  # (360, 2400) nm
eps = ohara_s_nph3.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

Sellmeier (C in µm²) (formula 2), λ in µm
n2−1=2.09834903λ2λ2−0.0179123869+0.489088388λ2λ2−0.0776653353+2.94009268λ2λ2−160.930428

Valid from 0.36 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C22.09834903
C30.0179123869
C40.489088388
C50.0776653353
C62.94009268
C7160.930428

Comments and conditions

Recommended - High Index

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -1.98e-06 1.36e-08 -3.16e-11 1.15e-06 1.85e-09 0.34
nd
1.959060
Vd
17.471252
density
value: 3590
thermal expansion
value: 5.9e-06, temperature range: 243 343
dPgF
0.0466
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 1.47e-06 K⁻¹ at 633 nm, dn/dT = -8.65e-07 K⁻¹ at 1310 nm, dn/dT = -1.01e-06 K⁻¹ at 1550 nm
Notes on the source data (kept exactly as published):
  • k data cover 400-2400 nm only; k = 0 elsewhere in the n range 360-2400 nm

References

Cite

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp); See also OHARA 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
S-NPH3 (OHARA), S-NPH3: n and k versus wavelength
λ (µm)nk
0.362.1570820
0.3617162.1522680
0.363442.1475990
0.3651722.1430680
0.3669122.1386690
0.3686612.1343950
0.3704182.1302410
0.3721832.1262020
0.3739572.1222730
0.375742.1184490
0.377532.1147250
0.379332.1110980
0.3811382.1075630
0.3829542.1041180
0.3847792.1007570
0.3866132.0974790
0.3884562.094280
0.3903072.0911560
0.3921672.0881060
0.3940362.0851270
0.3959142.0822150
0.3978012.0793690
0.3996972.0765860
0.42.0761496.749000e-06
0.4016022.0738656.296316e-06
0.4035162.0712025.755494e-06
0.4054392.0685975.212095e-06
0.4073722.0660464.666107e-06
0.4093132.063554.117516e-06
0.4112642.0611053.566310e-06
0.4132242.058713.012478e-06
0.4151932.0563632.456006e-06
0.4171722.0540641.896882e-06
0.4191612.051811.335093e-06
0.422.0508751.097900e-06
0.4211582.0496011.060239e-06
0.4231662.0474349.949735e-07
0.4251822.0453099.293969e-07
0.4272092.0432248.635077e-07
0.4292452.0411797.973046e-07
0.4312912.0391727.307859e-07
0.4333462.0372026.639502e-07
0.4354112.0352685.967960e-07
0.4374872.033375.293217e-07
0.4395722.0315054.615258e-07
0.442.0311274.476000e-07
0.4416672.0296744.317820e-07
0.4437722.0278754.118047e-07
0.4458872.0261083.917321e-07
0.4480122.0243713.715638e-07
0.4501472.0226643.512994e-07
0.4522922.0209873.309385e-07
0.4544482.0193383.104805e-07
0.4566142.0177162.899250e-07
0.458792.0161222.692715e-07
0.462.015252.577900e-07
0.4609772.0145542.535941e-07
0.4631742.0130122.441568e-07
0.4653812.0114952.346745e-07
0.4675992.0100022.251471e-07
0.4698282.0085342.155742e-07
0.4720672.0070892.059557e-07
0.4743172.0056671.962914e-07
0.4765782.0042671.865810e-07
0.4788492.0028891.768243e-07
0.482.0022011.718800e-07
0.4811312.0015321.690131e-07
0.4834242.0001971.632013e-07
0.4857281.9988821.573618e-07
0.4880431.9975861.514944e-07
0.4903691.9963111.455992e-07
0.4927061.9950541.396758e-07
0.4950551.9938171.337241e-07
0.4974141.9925971.277442e-07
0.4997851.9913961.217357e-07
0.51.9912881.211900e-07
0.5021671.9902121.178446e-07
0.504561.9890461.141492e-07
0.5069651.9878961.104361e-07
0.5093811.9867631.067054e-07
0.5118091.9856461.029570e-07
0.5142481.9845459.919060e-08
0.5166991.9834599.540630e-08
0.5191611.9823899.160396e-08
0.5216361.9813348.778350e-08
0.5241221.9802938.394483e-08
0.526621.9792678.008787e-08
0.529131.9782557.621252e-08
0.5316521.9772577.231870e-08
0.5341851.9762726.840633e-08
0.5367311.9753016.447531e-08
0.5392891.9743426.052555e-08
0.541861.9733975.655697e-08
0.5444421.9724645.256948e-08
0.5470371.9715444.856298e-08
0.5496441.9706364.453738e-08
0.551.9705134.398800e-08
0.5522641.9697394.286285e-08
0.5548961.9688554.155464e-08
0.5575411.9679824.024020e-08
0.5601981.967123.891950e-08
0.5628681.9662693.759250e-08
0.565551.965433.625918e-08
0.5682461.9646013.491951e-08
0.5709541.9637823.357344e-08
0.5736751.9629743.222097e-08
0.5764091.9621763.086205e-08
0.5791561.9613882.949665e-08
0.5819171.960612.812474e-08
0.584691.9598422.674629e-08
0.5874771.9590832.536128e-08
0.5902771.9583332.396966e-08
0.593091.9575932.257142e-08
0.5959171.9568622.116650e-08
0.5987571.9561391.975490e-08
0.61.9558271.913700e-08
0.601611.9554261.902117e-08
0.6044781.9547211.881496e-08
0.6073591.9540241.860776e-08
0.6102531.9533361.839958e-08
0.6131621.9526561.819040e-08
0.6160841.9519841.798023e-08
0.619021.951321.776905e-08
0.6219711.9506641.755687e-08
0.6249351.9500151.734367e-08
0.6279131.9493741.712946e-08
0.6309061.948741.691423e-08
0.6339131.9481141.669798e-08
0.6369341.9474951.648069e-08
0.639971.9468831.626237e-08
0.643021.9462781.604300e-08
0.6460851.945681.582259e-08
0.6491641.9450891.560113e-08
0.651.944931.554100e-08
0.6522581.9445051.509090e-08
0.6553661.9439271.447116e-08
0.658491.9433551.384848e-08
0.6616281.942791.322283e-08
0.6647821.9422311.259419e-08
0.667951.9416781.196256e-08
0.6711331.9411321.132792e-08
0.6743321.9405911.069026e-08
0.6775461.9400571.004955e-08
0.6807751.9395289.405793e-09
0.684021.9390058.758967e-09
0.687281.9384878.109057e-09
0.6905551.9379757.456051e-09
0.6938471.9374696.799932e-09
0.6971531.9369686.140686e-09
0.71.9365435.573200e-09
0.7004761.9364725.576990e-09
0.7038151.9359825.603571e-09
0.7071691.9354975.630279e-09
0.7105391.9350165.657114e-09
0.7139261.9345415.684077e-09
0.7173281.9340715.711168e-09
0.7207471.9336065.738388e-09
0.7241821.9331455.765738e-09
0.7276341.9326895.793219e-09
0.7311021.9322385.820830e-09
0.7345861.9317925.848573e-09
0.7380871.931355.876449e-09
0.7416051.9309125.904457e-09
0.7451391.9304795.932599e-09
0.7486911.930055.960874e-09
0.7522591.9296265.989285e-09
0.7558441.9292056.017831e-09
0.7594461.9287896.046513e-09
0.7630661.9283776.075331e-09
0.7667031.9279696.104288e-09
0.7703571.9275656.133382e-09
0.7740281.9271656.162614e-09
0.7777171.9267696.191986e-09
0.7814241.9263766.221498e-09
0.7851481.9259886.251151e-09
0.788891.9256036.280945e-09
0.792651.9252216.310881e-09
0.7964281.9248446.340960e-09
0.81.9244916.369400e-09
0.8002241.924476.387231e-09
0.8040381.9240996.691143e-09
0.807871.9237326.996504e-09
0.811721.9233687.303320e-09
0.8155891.9230077.611598e-09
0.8194761.922657.921346e-09
0.8233811.9222968.232570e-09
0.8273061.9219458.545277e-09
0.8312491.9215988.859475e-09
0.835211.9212539.175170e-09
0.8391911.9209129.492369e-09
0.8431911.9205749.811081e-09
0.8472091.9202381.013131e-08
0.8512471.9199061.045307e-08
0.8553041.9195761.077636e-08
0.859381.9192491.110119e-08
0.8634761.9189261.142757e-08
0.8675921.9186041.175550e-08
0.8717271.9182861.208500e-08
0.8758811.917971.241607e-08
0.8800561.9176571.274871e-08
0.884251.9173471.308294e-08
0.8884641.9170391.341877e-08
0.8926991.9167341.375619e-08
0.8969531.9164311.409523e-08
0.91.9162161.433800e-08
0.9012281.9161311.435757e-08
0.9055241.9158331.442599e-08
0.9098391.9155371.449474e-08
0.9141761.9152441.456382e-08
0.9185331.9149531.463322e-08
0.922911.9146641.470296e-08
0.9273091.9143781.477303e-08
0.9317281.9140941.484343e-08
0.9361691.9138121.491417e-08
0.9406311.9135321.498525e-08
0.9451141.9132541.505666e-08
0.9496181.9129791.512842e-08
0.9541441.9127051.520052e-08
0.9586921.9124341.527296e-08
0.9632611.9121641.534574e-08
0.9678521.9118961.541888e-08
0.9724641.9116311.549236e-08
0.9770991.9113671.556619e-08
0.9817561.9111051.564037e-08
0.9864351.9108451.571491e-08
0.9911371.9105861.578980e-08
0.995861.910331.586505e-08
11.9101071.593100e-08
1.000611.9100751.591166e-08
1.005381.9098221.575961e-08
1.010171.909571.560683e-08
1.014981.909321.545332e-08
1.019821.9090721.529908e-08
1.024681.9088261.514411e-08
1.029561.9085811.498840e-08
1.034471.9083371.483194e-08
1.03941.9080951.467474e-08
1.044351.9078551.451679e-08
1.049331.9076161.435809e-08
1.054331.9073781.419863e-08
1.059361.9071421.403841e-08
1.064411.9069071.387743e-08
1.069481.9066741.371568e-08
1.074581.9064421.355316e-08
1.07971.9062111.338987e-08
1.084841.9059811.322580e-08
1.090011.9057531.306094e-08
1.095211.9055261.289530e-08
1.100431.90531.272887e-08
1.105671.9050761.256165e-08
1.110941.9048521.239363e-08
1.116241.904631.222481e-08
1.121561.9044091.205518e-08
1.12691.9041881.188475e-08
1.132271.9039691.171350e-08
1.137671.9037511.154144e-08
1.143091.9035341.136856e-08
1.148541.9033181.119485e-08
1.154011.9031031.102032e-08
1.159511.9028891.084495e-08
1.165041.9026761.066875e-08
1.170591.9024631.049171e-08
1.176171.9022521.031382e-08
1.181781.9020411.013509e-08
1.187411.9018329.955501e-09
1.193071.9016239.775060e-09
1.198761.9014159.593759e-09
1.21.9013699.554100e-09
1.204471.9012079.839024e-09
1.210211.9011.020498e-08
1.215981.9007951.057268e-08
1.221771.9005891.094213e-08
1.22761.9003851.131334e-08
1.233451.9001811.168632e-08
1.239331.8999781.206108e-08
1.245231.8997751.243763e-08
1.251171.8995731.281597e-08
1.257131.8993721.319611e-08
1.263121.8991711.357806e-08
1.269141.898971.396184e-08
1.275191.898771.434744e-08
1.281271.8985711.473488e-08
1.287371.8983721.512417e-08
1.293511.8981741.551532e-08
1.299671.8979761.590832e-08
1.305871.8977781.630321e-08
1.312091.8975811.669997e-08
1.318351.8973841.709862e-08
1.324631.8971881.749918e-08
1.330941.8969911.790164e-08
1.337291.8967961.830602e-08
1.343661.89661.871233e-08
1.350061.8964051.912057e-08
1.35651.896211.953077e-08
1.362961.8960151.994291e-08
1.369461.895822.035702e-08
1.375991.8956262.077310e-08
1.382541.8954322.119117e-08
1.389131.8952382.161123e-08
1.395751.8950442.203329e-08
1.41.894922.230400e-08
1.402411.894852.280341e-08
1.409091.8946562.419091e-08
1.415811.8944632.558503e-08
1.422551.8942692.698579e-08
1.429331.8940752.839323e-08
1.436151.8938822.980738e-08
1.442991.8936883.122827e-08
1.449871.8934953.265593e-08
1.456781.8933013.409039e-08
1.463721.8931073.553169e-08
1.47071.8929143.697986e-08
1.477711.892723.843493e-08
1.484751.8925263.989694e-08
1.491821.8923324.136591e-08
1.498931.8921374.284189e-08
1.506081.8919434.432490e-08
1.513261.8917484.581497e-08
1.520471.8915534.731215e-08
1.527721.8913584.881647e-08
1.5351.8911635.032795e-08
1.542311.8909675.184664e-08
1.549661.8907715.337257e-08
1.557051.8905755.490577e-08
1.564471.8903785.644627e-08
1.571931.8901815.799412e-08
1.579421.8899845.954934e-08
1.586951.8897866.111198e-08
1.594511.8895886.268207e-08
1.61.8894446.382200e-08
1.602111.8893896.481936e-08
1.609741.889196.843171e-08
1.617421.8889917.206128e-08
1.625121.8887917.570815e-08
1.632871.888597.937240e-08
1.640651.8883898.305412e-08
1.648471.8881878.675338e-08
1.656331.8879859.047027e-08
1.664221.8877829.420488e-08
1.672151.8875799.795728e-08
1.680121.8873751.017276e-07
1.688131.887171.055158e-07
1.696181.8869651.093221e-07
1.704261.8867581.131466e-07
1.712381.8865521.169893e-07
1.720541.8863441.208503e-07
1.728741.8861361.247297e-07
1.736981.8859261.286276e-07
1.745261.8857161.325440e-07
1.753581.8855061.364792e-07
1.761941.8852941.404331e-07
1.770331.8850811.444058e-07
1.778771.8848681.483974e-07
1.787251.8846541.524081e-07
1.795771.8844391.564379e-07
1.81.8843321.584400e-07
1.804331.8842221.609160e-07
1.812931.8840051.658370e-07
1.821571.8837871.707815e-07
1.830251.8835681.757495e-07
1.838971.8833471.807413e-07
1.847741.8831261.857568e-07
1.856541.8829041.907962e-07
1.865391.882681.958596e-07
1.874281.8824552.009472e-07
1.883211.8822292.060590e-07
1.892191.8820022.111952e-07
1.901211.8817742.163559e-07
1.910271.8815452.215411e-07
1.919371.8813142.267511e-07
1.928521.8810822.319859e-07
1.937711.8808482.372456e-07
1.946951.8806142.425304e-07
1.956231.8803782.478404e-07
1.965551.880142.531758e-07
1.974921.8799022.585365e-07
1.984331.8796612.639228e-07
1.993791.879422.693347e-07
21.8792612.728900e-07
2.003291.8791762.777667e-07
2.012841.8789322.919207e-07
2.022431.8786863.061421e-07
2.032071.8784383.204313e-07
2.041751.8781883.347887e-07
2.051491.8779373.492144e-07
2.061261.8776853.637089e-07
2.071091.8774313.782725e-07
2.080961.8771753.929055e-07
2.090881.8769174.076082e-07
2.100841.8766574.223810e-07
2.110851.8763964.372242e-07
2.120911.8761334.521382e-07
2.131021.8758684.671232e-07
2.141181.8756024.821797e-07
2.151381.8753334.973079e-07
2.161641.8750635.125082e-07
2.171941.874795.277810e-07
2.182291.8745165.431265e-07
2.192691.8742395.585452e-07
2.21.8740455.693800e-07
2.203141.8739615.761403e-07
2.213641.873685.987346e-07
2.224191.8733986.214366e-07
2.234791.8731136.442468e-07
2.245441.8728266.671657e-07
2.256151.8725376.901938e-07
2.26691.8722457.133317e-07
2.27771.8719527.365799e-07
2.288561.8716567.599388e-07
2.299471.8713587.834091e-07
2.310421.8710578.069913e-07
2.321441.8707548.306858e-07
2.33251.8704498.544933e-07
2.343621.8701418.784143e-07
2.354791.8698319.024492e-07
2.366011.8695189.265987e-07
2.377291.8692029.508633e-07
2.388621.8688849.752436e-07
2.41.8685649.997400e-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
—