Optical constants

Refractive index of S-NBH52 (OHARA)

S-NBH52: n,k 0.32–2.4 µm

Data
formula 2 + tabulated k
Range
0.32–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.32–2.4 µm
Refractive index n
1.673
Extinction coefficient k
4.67830e-09
Permittivity ε1
2.79892
Permittivity ε2
1.56535e-08
Absorption coefficient α
0.0010005 cm⁻¹
Penetration depth δ = λ/(2πk)
1.99901e+10 nm
Abbe number Vd
38.148
Chromatic dispersion dn/dλ
-0.0897919 µm⁻¹
Group index ng
1.72576
Group velocity dispersion
170.919 fs²/mm
Dispersion parameter D
-932.454 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-NBH52 (OHARA): S-NBH52
ohara_s_nbh52 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-NBH52", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_nbh52.range_nm)  # (320, 2400) nm
eps = ohara_s_nbh52.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=1.50305799λ2λ2−0.00999021738+0.221715926λ2λ2−0.0450327698+1.84496391λ2λ2−163.722302

Valid from 0.32 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.50305799
C30.00999021738
C40.221715926
C50.0450327698
C61.84496391
C7163.722302

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 1.88e-06 5.19e-09 -3.15e-11 7.29e-07 9.66e-10 0.25
nd
1.672999
Vd
38.148170
density
value: 3090
thermal expansion
value: 8.6e-06, temperature range: 243 343
dPgF
-0.0043
resistance
acid: 1.0; climatic: 4.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 2.16e-06 K⁻¹ at 633 nm, dn/dT = 1.21e-06 K⁻¹ at 1310 nm, dn/dT = 1.14e-06 K⁻¹ at 1550 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 426 wavelengths, the same grid as the API and the library
S-NBH52 (OHARA), S-NBH52: n and k versus wavelength
λ (µm)nk
0.321.749338.196800e-06
0.321621.7479247.291873e-06
0.3232481.7465466.382364e-06
0.3248851.7451955.468251e-06
0.326531.7438694.549510e-06
0.3281831.7425693.626118e-06
0.3298441.7412932.698051e-06
0.331.7411752.611000e-06
0.3315141.7400422.367693e-06
0.3331921.7388132.097984e-06
0.3348791.7376071.826909e-06
0.3365751.7364221.554462e-06
0.3382791.7352591.280635e-06
0.3399911.7341171.005422e-06
0.341.7341111.004000e-06
0.3417121.7329959.095865e-07
0.3434421.7318938.142045e-07
0.3451811.7308097.183396e-07
0.3469291.7297456.219894e-07
0.3486851.7286985.251514e-07
0.351.727934.526500e-07
0.350451.727674.426035e-07
0.3522251.7266584.030192e-07
0.3540081.7256643.632344e-07
0.35581.7246863.232482e-07
0.3576011.7237242.830596e-07
0.3594121.7227782.426675e-07
0.361.7224752.295400e-07
0.3612311.7218472.168341e-07
0.363061.7209311.979610e-07
0.3648981.720031.789924e-07
0.3667451.7191431.599277e-07
0.3686021.718271.407665e-07
0.371.7176241.263400e-07
0.3704681.717411.238642e-07
0.3723441.7165641.139463e-07
0.3742291.7157311.039782e-07
0.3761231.7149119.395957e-08
0.3780281.7141048.389025e-08
0.3799411.7133087.376995e-08
0.381.7132847.346000e-08
0.3818651.7125256.850776e-08
0.3837981.7117536.337402e-08
0.3857411.7109935.821428e-08
0.3876941.7102445.302843e-08
0.3896571.7095074.781631e-08
0.391.7093794.690500e-08
0.391631.7087794.447474e-08
0.3936121.7080634.151776e-08
0.3956051.7073573.854581e-08
0.3976081.7066613.555882e-08
0.3996211.7059753.255671e-08
0.41.7058473.199100e-08
0.4016441.7052993.129130e-08
0.4036771.7046323.042579e-08
0.4057211.7039752.955590e-08
0.4077751.7033272.868161e-08
0.4098391.7026882.780289e-08
0.4119141.7020582.691971e-08
0.4141.7014372.603207e-08
0.4160961.7008242.513994e-08
0.4182021.7002192.424329e-08
0.421.6997132.347800e-08
0.4203191.6996232.343959e-08
0.4224471.6990352.318360e-08
0.4245861.6984552.292631e-08
0.4267351.6978832.266772e-08
0.4288961.6973182.240783e-08
0.4310671.6967612.214661e-08
0.433251.6962112.188408e-08
0.4354431.6956692.162021e-08
0.4376471.6951332.135501e-08
0.4398631.6946052.108847e-08
0.441.6945732.107200e-08
0.442091.6940832.078745e-08
0.4443281.6935692.048272e-08
0.4465781.6930612.017646e-08
0.4488381.6925591.986864e-08
0.4511111.6920641.955926e-08
0.4533951.6915751.924832e-08
0.455691.6910931.893581e-08
0.4579971.6906171.862171e-08
0.461.690211.834900e-08
0.4603161.6901461.830103e-08
0.4626461.6896821.794692e-08
0.4649881.6892231.759103e-08
0.4673421.688771.723332e-08
0.4697081.6883231.687381e-08
0.4720861.6878811.651248e-08
0.4744761.6874451.614932e-08
0.4768781.6870141.578432e-08
0.4792931.6865881.541747e-08
0.481.6864651.531000e-08
0.4817191.6861681.502160e-08
0.4841581.6857531.461249e-08
0.4866091.6853421.420132e-08
0.4890731.6849371.378806e-08
0.4915491.6845361.337271e-08
0.4940371.6841411.295526e-08
0.4965381.683751.253569e-08
0.4990521.6833641.211400e-08
0.51.683221.195500e-08
0.5015791.6829821.171580e-08
0.5041181.6826051.133104e-08
0.506671.6822321.094433e-08
0.5092351.6818641.055567e-08
0.5118131.68151.016504e-08
0.5144051.681149.772430e-09
0.5170091.6807849.377833e-09
0.5196261.6804338.981239e-09
0.5222571.6800858.582637e-09
0.5249011.6797428.182018e-09
0.5275581.6794037.779370e-09
0.5302291.6790677.374683e-09
0.5329131.6787356.967948e-09
0.5356111.6784076.559154e-09
0.5383231.6780836.148290e-09
0.5410481.6777625.735345e-09
0.5437881.6774455.320311e-09
0.5465411.6771324.903175e-09
0.5493081.6768224.483927e-09
0.551.6767454.379000e-09
0.5520881.6765154.395624e-09
0.5548831.6762124.417873e-09
0.5576931.6759124.440234e-09
0.5605161.6756164.462708e-09
0.5633541.6753224.485296e-09
0.5662061.6750324.507999e-09
0.5690721.6747454.530816e-09
0.5719531.6744624.553749e-09
0.5748491.6741814.576798e-09
0.5777591.6739034.599963e-09
0.5806841.6736284.623246e-09
0.5836241.6733574.646647e-09
0.5865791.6730884.670167e-09
0.5895481.6728224.693805e-09
0.5925331.6725594.717563e-09
0.5955331.6722984.741441e-09
0.5985481.6720414.765441e-09
0.61.6719184.777000e-09
0.6015781.6717864.953047e-09
0.6046241.6715335.292812e-09
0.6076851.6712845.634297e-09
0.6107611.6710375.977511e-09
0.6138531.6707926.322463e-09
0.6169611.670556.669161e-09
0.6200841.670317.017614e-09
0.6232241.6700737.367831e-09
0.6263791.6698397.719821e-09
0.629551.6696068.073594e-09
0.6327371.6693768.429157e-09
0.635941.6691498.786521e-09
0.639161.6689239.145693e-09
0.6423961.66879.506684e-09
0.6456481.6684799.869503e-09
0.6489171.668261.023416e-08
0.651.6681891.035500e-08
0.6522021.6680441.014441e-08
0.6555041.6678299.828628e-09
0.6588231.6676179.511251e-09
0.6621581.6674069.192267e-09
0.665511.6671988.871669e-09
0.6688791.6669928.549448e-09
0.6722661.6667888.225595e-09
0.6756691.6665857.900103e-09
0.679091.6663857.572963e-09
0.6825281.6661867.244166e-09
0.6859831.6659896.913706e-09
0.6894561.6657956.581572e-09
0.6929471.6656026.247756e-09
0.6964551.665415.912251e-09
0.6999811.6652215.575047e-09
0.71.665225.573200e-09
0.7035241.6650335.601262e-09
0.7070861.6648475.629620e-09
0.7106661.6646635.658122e-09
0.7142641.664485.686768e-09
0.717881.6642995.715559e-09
0.7215141.6641195.744496e-09
0.7251671.6639415.773579e-09
0.7288381.6637655.802810e-09
0.7325281.663595.832189e-09
0.7362371.6634175.861716e-09
0.7399641.6632465.891393e-09
0.743711.6630755.921220e-09
0.7474751.6629065.951198e-09
0.7512591.6627395.981328e-09
0.7550631.6625736.011610e-09
0.7588851.6624096.042046e-09
0.7627271.6622456.072636e-09
0.7665891.6620846.103381e-09
0.770471.6619236.134281e-09
0.774371.6617646.165338e-09
0.7782911.6616066.196552e-09
0.7822311.6614496.227924e-09
0.7861911.6612946.259454e-09
0.7901711.661146.291145e-09
0.7941721.6609876.322996e-09
0.7981921.6608356.355008e-09
0.81.6607686.369400e-09
0.8022331.6606856.387182e-09
0.8062951.6605356.419519e-09
0.8103771.6603876.452020e-09
0.8144791.660246.484685e-09
0.8186031.6600946.517516e-09
0.8227471.6599496.550513e-09
0.8269121.6598056.583677e-09
0.8310991.6596626.617009e-09
0.8353061.659526.650510e-09
0.8395351.659386.684180e-09
0.8437861.659246.718021e-09
0.8480571.6591016.752033e-09
0.8523511.6589636.786217e-09
0.8566661.6588266.820574e-09
0.8610031.658696.855105e-09
0.8653621.6585556.889811e-09
0.8697431.6584216.924693e-09
0.8741461.6582886.959752e-09
0.8785721.6581556.994987e-09
0.883021.6580247.030402e-09
0.887491.6578937.065995e-09
0.8919831.6577637.101769e-09
0.8964991.6576347.137724e-09
0.91.6575357.165600e-09
0.9010371.6575067.173859e-09
0.9055991.6573787.210175e-09
0.9101841.6572527.246674e-09
0.9147921.6571267.283358e-09
0.9194231.6577.320227e-09
0.9240781.6568767.357283e-09
0.9287561.6567527.394527e-09
0.9334581.6566297.431960e-09
0.9381841.6565067.469582e-09
0.9429341.6563847.507394e-09
0.9477071.6562637.545398e-09
0.9525051.6561427.583594e-09
0.9573271.6560227.621983e-09
0.9621741.6559037.660567e-09
0.9670451.6557847.699347e-09
0.9719411.6556667.738322e-09
0.9768621.6555497.777495e-09
0.9818071.6554317.816866e-09
0.9867781.6553157.856437e-09
0.9917731.6551997.896208e-09
0.9967941.6550837.936180e-09
11.655017.961700e-09
1.001841.6549687.976356e-09
1.006911.6548548.016739e-09
1.012011.654748.057327e-09
1.017131.6546268.098120e-09
1.022281.6545138.139119e-09
1.027461.65448.180327e-09
1.032661.6542888.221742e-09
1.037891.6541768.263368e-09
1.043141.6540648.305204e-09
1.048421.6539538.347252e-09
1.053731.6538428.389512e-09
1.059071.6537328.431987e-09
1.064431.6536228.474677e-09
1.069821.6535128.517583e-09
1.075231.6534038.560706e-09
1.080681.6532948.604047e-09
1.086151.6531858.647608e-09
1.091651.6530768.691389e-09
1.097171.6529688.735392e-09
1.102731.652868.779618e-09
1.108311.6527528.824068e-09
1.113921.6526458.868743e-09
1.119561.6525378.913644e-09
1.125231.652438.958772e-09
1.130931.6523239.004128e-09
1.136651.6522169.049715e-09
1.142411.652119.095532e-09
1.148191.6520039.141581e-09
1.1541.6518979.187863e-09
1.159841.6517919.234380e-09
1.165721.6516859.281132e-09
1.171621.6515799.328120e-09
1.177551.6514749.375347e-09
1.183511.6513689.422812e-09
1.18951.6512629.470518e-09
1.195521.6511579.518466e-09
1.21.6510799.554100e-09
1.201581.6510519.830856e-09
1.207661.6509461.089842e-08
1.213771.650841.197139e-08
1.219921.6507351.304979e-08
1.22611.650631.413365e-08
1.23231.6505241.522299e-08
1.238541.6504191.631785e-08
1.244811.6503141.741826e-08
1.251111.6502081.852423e-08
1.257451.6501031.963581e-08
1.263811.6499972.075301e-08
1.270211.6498922.187587e-08
1.276641.6497862.300441e-08
1.283111.649682.413866e-08
1.28961.6495742.527866e-08
1.296131.6494682.642443e-08
1.302691.6493622.757600e-08
1.309291.6492562.873340e-08
1.315921.6491492.989666e-08
1.322581.6490433.106581e-08
1.329271.6489363.224088e-08
1.3361.6488293.342190e-08
1.342771.6487223.460889e-08
1.349561.6486143.580190e-08
1.35641.6485073.700094e-08
1.363261.6483993.820606e-08
1.370171.6482913.941727e-08
1.37711.6481834.063462e-08
1.384071.6480744.185813e-08
1.391081.6479654.308784e-08
1.398121.6478564.432377e-08
1.41.6478274.465300e-08
1.40521.6477474.515161e-08
1.412321.6476374.583345e-08
1.419471.6475274.651875e-08
1.426651.6474164.720752e-08
1.433881.6473054.789977e-08
1.441131.6471944.859553e-08
1.448431.6470824.929482e-08
1.455761.6469714.999764e-08
1.463131.6468585.070402e-08
1.470541.6467455.141397e-08
1.477991.6466325.212752e-08
1.485471.6465185.284469e-08
1.492991.6464045.356548e-08
1.500551.646295.428992e-08
1.508141.6461755.501803e-08
1.515781.6460595.574983e-08
1.523451.6459435.648533e-08
1.531171.6458275.722456e-08
1.538921.6457095.796753e-08
1.546711.6455925.871425e-08
1.554541.6454745.946476e-08
1.562411.6453556.021907e-08
1.570321.6452356.097720e-08
1.578271.6451156.173917e-08
1.586261.6449956.250499e-08
1.594291.6448746.327469e-08
1.61.6447886.382200e-08
1.602361.6447526.596788e-08
1.610471.6446297.334097e-08
1.618631.6445068.075140e-08
1.626821.6443828.819934e-08
1.635061.6442589.568499e-08
1.643331.6441331.032085e-07
1.651651.6440071.107702e-07
1.660021.643881.183701e-07
1.668421.6437531.260085e-07
1.676871.6436241.336855e-07
1.685361.6434951.414015e-07
1.693891.6433661.491565e-07
1.702461.6432351.569507e-07
1.711081.6431041.647844e-07
1.719751.6429721.726578e-07
1.728451.6428381.805710e-07
1.73721.6427041.885243e-07
1.7461.642571.965179e-07
1.754841.6424342.045519e-07
1.763721.6422972.126266e-07
1.772651.642162.207422e-07
1.781621.6420212.288988e-07
1.790641.6418822.370968e-07
1.799711.6417412.453363e-07
1.81.6417372.456000e-07
1.808821.64162.554254e-07
1.817981.6414572.656254e-07
1.827181.6413142.758771e-07
1.836431.6411692.861806e-07
1.845731.6410242.965364e-07
1.855071.6408773.069445e-07
1.864471.6407293.174053e-07
1.873911.6405813.279191e-07
1.883391.6404313.384861e-07
1.892931.6402793.491067e-07
1.902511.6401273.597809e-07
1.912141.6399743.705093e-07
1.921821.6398193.812919e-07
1.931551.6396633.921291e-07
1.941331.6395064.030212e-07
1.951161.6393484.139685e-07
1.961041.6391884.249711e-07
1.970971.6390274.360295e-07
1.980941.6388654.471438e-07
1.990971.6387014.583145e-07
21.6385534.683700e-07
2.001051.6385364.723909e-07
2.011181.638375.111168e-07
2.021361.6382025.500387e-07
2.03161.6380335.891577e-07
2.041881.6378636.284747e-07
2.052221.6376916.679908e-07
2.062611.6375177.077069e-07
2.073051.6373427.476241e-07
2.083551.6371667.877434e-07
2.09411.6369888.280658e-07
2.10471.6368088.685923e-07
2.115351.6366279.093240e-07
2.126061.6364459.502619e-07
2.136831.636269.914071e-07
2.147641.6360741.032761e-06
2.158521.6358871.074323e-06
2.169441.6356981.116097e-06
2.180431.6355071.158081e-06
2.191471.6353141.200279e-06
2.21.6351641.232900e-06
2.202561.6351191.239640e-06
2.213711.6349231.268989e-06
2.224921.6347251.298487e-06
2.236181.6345251.328134e-06
2.24751.6343231.357931e-06
2.258881.634121.387878e-06
2.270321.6339141.417978e-06
2.281811.6337071.448229e-06
2.293361.6334971.478634e-06
2.304971.6332861.509193e-06
2.316641.6330721.539907e-06
2.328371.6328571.570776e-06
2.340161.6326391.601801e-06
2.352011.632421.632984e-06
2.363911.6321981.664324e-06
2.375881.6319741.695823e-06
2.387911.6317481.727481e-06
2.41.631521.759300e-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
—