Optical constants

Refractive index of S-NBH53 (OHARA)

S-NBH53: n,k 0.33–2.4 µm

Data
formula 2 + tabulated k
Range
0.33–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.33–2.4 µm
Refractive index n
1.73799
Extinction coefficient k
1.40486e-08
Permittivity ε1
3.02063
Permittivity ε2
4.88329e-08
Absorption coefficient α
0.00300443 cm⁻¹
Penetration depth δ = λ/(2πk)
6.65683e+09 nm
Abbe number Vd
32.261
Chromatic dispersion dn/dλ
-0.115689 µm⁻¹
Group index ng
1.80597
Group velocity dispersion
227.228 fs²/mm
Dispersion parameter D
-1239.65 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-NBH53 (OHARA): S-NBH53
ohara_s_nbh53 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-NBH53", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_nbh53.range_nm)  # (330, 2400) nm
eps = ohara_s_nbh53.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=1.6582834λ2λ2−0.0113872516+0.263275666λ2λ2−0.0522108137+2.10142759λ2λ2−165.523649

Valid from 0.33 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.6582834
C30.0113872516
C40.263275666
C50.0522108137
C62.10142759
C7165.523649

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 3.75e-06 9.12e-09 -3.26e-11 8.19e-07 1.05e-09 0.264
nd
1.737999
Vd
32.261312
density
value: 3280
thermal expansion
value: 6.9e-06, temperature range: 243 343
dPgF
0.0006
resistance
acid: 1.0; climatic: 2.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 3.60e-06 K⁻¹ at 633 nm, dn/dT = 2.39e-06 K⁻¹ at 1310 nm, dn/dT = 2.29e-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 425 wavelengths, the same grid as the API and the library
S-NBH53 (OHARA), S-NBH53: n and k versus wavelength
λ (µm)nk
0.331.8320219.208400e-06
0.3316451.8301878.482237e-06
0.3332981.8283917.752455e-06
0.334961.8266347.019034e-06
0.336631.8249156.281957e-06
0.3383081.823235.541206e-06
0.3399941.8215814.796761e-06
0.341.8215764.794300e-06
0.3416891.8199654.292058e-06
0.3433931.8183823.785646e-06
0.3451051.816833.276709e-06
0.3468251.8153092.765235e-06
0.3485541.8138182.251211e-06
0.351.8125981.821300e-06
0.3502921.8123551.793350e-06
0.3520381.810921.625937e-06
0.3537931.8095121.457689e-06
0.3555561.8081311.288602e-06
0.3573291.8067751.118672e-06
0.359111.8054459.478957e-07
0.361.8047918.626000e-07
0.3609011.8041388.280130e-07
0.36271.8028557.589116e-07
0.3645081.8015956.894657e-07
0.3663251.8003576.196736e-07
0.3681511.7991415.495335e-07
0.3699861.7979464.790439e-07
0.371.7979374.785200e-07
0.3718311.7967724.400916e-07
0.3736841.7956174.011839e-07
0.3755471.7944833.620822e-07
0.3774191.7933673.227856e-07
0.3793011.7922712.832931e-07
0.381.7918692.686200e-07
0.3811921.7911922.567483e-07
0.3830921.7901312.378195e-07
0.3850021.7890882.187962e-07
0.3869211.7880611.996782e-07
0.388851.7870511.804648e-07
0.391.7864591.690100e-07
0.3907891.7860571.646251e-07
0.3927371.7850791.537915e-07
0.3946941.7841161.429039e-07
0.3966621.7831681.319621e-07
0.398641.7822351.209656e-07
0.41.7816051.134000e-07
0.4006271.7813171.118554e-07
0.4026241.7804121.069337e-07
0.4046311.7795221.019875e-07
0.4066481.7786459.701669e-08
0.4086751.7777819.202106e-08
0.4107131.776938.700053e-08
0.412761.7760928.195496e-08
0.4148181.7752667.688425e-08
0.4168861.7744527.178826e-08
0.4189641.773656.666686e-08
0.421.7732566.411400e-08
0.4210531.772866.333777e-08
0.4231521.7720816.178996e-08
0.4252611.7713136.023443e-08
0.4273811.7705575.867116e-08
0.4295121.7698115.710008e-08
0.4316531.7690765.552118e-08
0.4338051.7683515.393440e-08
0.4359671.7676365.233972e-08
0.4381411.7669315.073708e-08
0.441.7663384.936600e-08
0.4403251.7662364.928196e-08
0.442521.765554.871409e-08
0.4447261.7648744.814339e-08
0.4469431.7642074.756985e-08
0.4491711.763554.699345e-08
0.451411.7629014.641417e-08
0.4536611.762264.583201e-08
0.4559221.7616294.524694e-08
0.4581951.7610064.465896e-08
0.461.7605194.419200e-08
0.4604791.7603914.396059e-08
0.4627751.7597844.285195e-08
0.4650821.7591854.173779e-08
0.46741.7585944.061807e-08
0.469731.7580113.949277e-08
0.4720721.7574353.836185e-08
0.4744251.7568673.722531e-08
0.476791.7563063.608309e-08
0.4791671.7557523.493518e-08
0.481.755563.453300e-08
0.4815561.7552053.402086e-08
0.4839571.7546653.323069e-08
0.4863691.7541333.243659e-08
0.4887941.7536063.163852e-08
0.4912311.7530873.083648e-08
0.4936791.7525743.003044e-08
0.496141.7520672.922038e-08
0.4986141.7515662.840628e-08
0.51.751292.795000e-08
0.5010991.7510722.762457e-08
0.5035971.7505842.688515e-08
0.5061081.7501022.614204e-08
0.5086311.7496252.539522e-08
0.5111671.7491552.464469e-08
0.5137151.748692.389041e-08
0.5162761.7482312.313237e-08
0.5188491.7477772.237055e-08
0.5214361.7473292.160493e-08
0.5240351.7468862.083550e-08
0.5266481.7464482.006223e-08
0.5292731.7460161.928511e-08
0.5319121.7455891.850411e-08
0.5345631.7451661.771922e-08
0.5372281.7447491.693042e-08
0.5399061.7443371.613768e-08
0.5425981.7439291.534100e-08
0.5453031.7435261.454034e-08
0.5480211.7431281.373569e-08
0.551.7428421.315000e-08
0.5507531.7427341.316800e-08
0.5534991.7423451.323362e-08
0.5562581.741961.329957e-08
0.5590311.7415791.336585e-08
0.5618181.7412031.343245e-08
0.5646191.7408321.349939e-08
0.5674331.7404641.356666e-08
0.5702621.74011.363427e-08
0.5731051.7397411.370221e-08
0.5759621.7393861.377049e-08
0.5788331.7390341.383912e-08
0.5817191.7386861.390808e-08
0.5846191.7383431.397739e-08
0.5875331.7380031.404704e-08
0.5904621.7376661.411705e-08
0.5934061.7373341.418740e-08
0.5963641.7370051.425810e-08
0.5993371.7366791.432915e-08
0.61.7366071.434500e-08
0.6023251.7363571.440061e-08
0.6053271.7360391.447243e-08
0.6083451.7357241.454461e-08
0.6113781.7354121.461715e-08
0.6144261.7351041.469006e-08
0.6174891.7347991.476333e-08
0.6205671.7344971.483696e-08
0.623661.7341981.491096e-08
0.6267691.7339021.498532e-08
0.6298941.733611.506006e-08
0.6330341.733321.513518e-08
0.636191.7330341.521066e-08
0.6393611.732751.528652e-08
0.6425491.732471.536276e-08
0.6457521.7321921.543938e-08
0.6489711.7319171.551639e-08
0.651.731831.554100e-08
0.6522061.7316451.534734e-08
0.6554581.7313761.506193e-08
0.6587251.7311091.477511e-08
0.6620091.7308451.448685e-08
0.6653091.7305831.419716e-08
0.6686261.7303251.390602e-08
0.6719591.7300681.361344e-08
0.6753091.7298151.331939e-08
0.6786751.7295641.302388e-08
0.6820591.7293151.272689e-08
0.6854591.7290681.242843e-08
0.6888761.7288251.212847e-08
0.692311.7285831.182702e-08
0.6957611.7283441.152407e-08
0.699231.7281071.121961e-08
0.71.7280541.115200e-08
0.7027161.7278721.102212e-08
0.7062191.7276391.085458e-08
0.7097391.7274091.068621e-08
0.7132771.7271811.051699e-08
0.7168331.7269551.034693e-08
0.7204071.7267311.017603e-08
0.7239981.7265091.000427e-08
0.7276071.7262899.831651e-09
0.7312351.7260719.658175e-09
0.734881.7258559.483835e-09
0.7385431.7256419.308625e-09
0.7422251.7254299.132542e-09
0.7459251.7252198.955581e-09
0.7496441.7250118.777738e-09
0.7533811.7248058.599008e-09
0.7571371.72468.419387e-09
0.7609111.7243978.238871e-09
0.7647041.7241968.057455e-09
0.7685161.7239977.875135e-09
0.7723481.7237997.691905e-09
0.7761981.7236037.507762e-09
0.7800671.7234097.322702e-09
0.7839561.7232167.136718e-09
0.7878641.7230256.949808e-09
0.7917921.7228366.761966e-09
0.7957391.7226486.573187e-09
0.7997061.7224626.383467e-09
0.81.7224486.369400e-09
0.8036931.7222776.398800e-09
0.8076991.7220946.430700e-09
0.8117261.7219126.462759e-09
0.8157721.7217326.494977e-09
0.8198391.7215536.527357e-09
0.8239261.7213756.559898e-09
0.8280331.7211996.592601e-09
0.8321611.7210246.625467e-09
0.836311.720856.658497e-09
0.8404791.7206786.691691e-09
0.8446691.7205076.725051e-09
0.8488791.7203386.758578e-09
0.8531111.7201696.792271e-09
0.8573641.7200026.826133e-09
0.8616381.7198366.860163e-09
0.8659341.7196726.894363e-09
0.870251.7195086.928733e-09
0.8745891.7193466.963275e-09
0.8789491.7191856.997989e-09
0.883331.7190257.032876e-09
0.8877341.7188667.067937e-09
0.8921591.7187087.103172e-09
0.8966071.7185517.138584e-09
0.91.7184327.165600e-09
0.9010771.7183957.174171e-09
0.9055691.718247.209931e-09
0.9100831.7180867.245870e-09
0.914621.7179347.281989e-09
0.9191791.7177827.318287e-09
0.9237621.7176317.354766e-09
0.9283671.7174817.391427e-09
0.9329951.7173327.428271e-09
0.9376461.7171847.465299e-09
0.942321.7170367.502511e-09
0.9470181.716897.539908e-09
0.9517391.7167457.577492e-09
0.9564831.71667.615264e-09
0.9612521.7164567.653223e-09
0.9660441.7163137.691372e-09
0.9708591.7161717.729712e-09
0.9756991.7160297.768242e-09
0.9805631.7158887.806964e-09
0.9854521.7157487.845879e-09
0.9903641.7156097.884989e-09
0.9953011.715477.924293e-09
11.715347.961700e-09
1.000261.7153327.963794e-09
1.005251.7151958.003496e-09
1.010261.7150598.043396e-09
1.01531.7149238.083495e-09
1.020361.7147878.123794e-09
1.025451.7146538.164294e-09
1.030561.7145188.204995e-09
1.035691.7143858.245900e-09
1.040861.7142528.287008e-09
1.046051.7141198.328322e-09
1.051261.7139888.369841e-09
1.05651.7138568.411568e-09
1.061771.7137258.453502e-09
1.067061.7135958.495645e-09
1.072381.7134658.537999e-09
1.077731.7133368.580564e-09
1.08311.7132078.623340e-09
1.08851.7130788.666330e-09
1.093931.712958.709535e-09
1.099381.7128228.752955e-09
1.104861.7126958.796591e-09
1.110371.7125688.840445e-09
1.11591.7124428.884517e-09
1.121471.7123158.928809e-09
1.127061.712198.973322e-09
1.132671.7120649.018057e-09
1.138321.7119399.063015e-09
1.1441.7118149.108197e-09
1.14971.7116899.153604e-09
1.155431.7115659.199237e-09
1.161191.7114419.245098e-09
1.166981.7113179.291188e-09
1.17281.7111939.337507e-09
1.178641.711079.384058e-09
1.184521.7109469.430840e-09
1.190421.7108239.477856e-09
1.196361.7107019.525106e-09
1.21.7106269.554100e-09
1.202321.7105789.961676e-09
1.208321.7104551.101355e-08
1.214341.7103331.207066e-08
1.220391.7102111.313304e-08
1.226481.7100881.420072e-08
1.232591.7099661.527373e-08
1.238741.7098441.635208e-08
1.244911.7097221.743581e-08
1.251121.70961.852494e-08
1.257351.7094791.961950e-08
1.263621.7093572.071951e-08
1.269921.7092352.182501e-08
1.276251.7091132.293602e-08
1.282611.7089912.405257e-08
1.289011.708872.517469e-08
1.295431.7087482.630240e-08
1.301891.7086262.743573e-08
1.308381.7085042.857471e-08
1.314911.7083822.971937e-08
1.321461.708263.086973e-08
1.328051.7081383.202584e-08
1.334671.7080153.318770e-08
1.341321.7078933.435535e-08
1.348011.707773.552883e-08
1.354731.7076473.670816e-08
1.361481.7075253.789336e-08
1.368271.7074013.908448e-08
1.375091.7072784.028153e-08
1.381951.7071554.148455e-08
1.388831.7070314.269356e-08
1.395761.7069074.390861e-08
1.41.7068314.465300e-08
1.402721.7067834.473964e-08
1.409711.7066584.496267e-08
1.416741.7065344.518682e-08
1.42381.7064094.541208e-08
1.43091.7062834.563847e-08
1.438031.7061584.586598e-08
1.44521.7060324.609463e-08
1.45241.7059064.632442e-08
1.459641.7057794.655535e-08
1.466921.7056524.678744e-08
1.474231.7055254.702068e-08
1.481581.7053974.725508e-08
1.488971.7052694.749066e-08
1.496391.705144.772741e-08
1.503851.7050114.796533e-08
1.511351.7048824.820445e-08
1.518881.7047524.844475e-08
1.526451.7046214.868626e-08
1.534061.704494.892897e-08
1.541711.7043594.917288e-08
1.54941.7042274.941802e-08
1.557121.7040954.966437e-08
1.564881.7039624.991196e-08
1.572681.7038285.016078e-08
1.580521.7036945.041083e-08
1.58841.7035595.066214e-08
1.596321.7034245.091470e-08
1.61.7033615.103200e-08
1.604281.7032885.302073e-08
1.612281.7031515.673672e-08
1.620321.7030146.047124e-08
1.628391.7028766.422437e-08
1.636511.7027376.799621e-08
1.644671.7025987.178686e-08
1.652871.7024587.559640e-08
1.661111.7023177.942493e-08
1.669391.7021768.327255e-08
1.677711.7020348.713935e-08
1.686071.7018919.102543e-08
1.694481.7017479.493088e-08
1.702931.7016029.885580e-08
1.711421.7014571.028003e-07
1.719951.701311.067644e-07
1.728521.7011631.107483e-07
1.737141.7010151.147521e-07
1.74581.7008671.187758e-07
1.75451.7007171.228196e-07
1.763251.7005661.268836e-07
1.772041.7004141.309678e-07
1.780871.7002621.350724e-07
1.789751.7001081.391974e-07
1.798671.6999541.433430e-07
1.81.6999311.439600e-07
1.807641.6997981.476487e-07
1.816651.6996421.520003e-07
1.825711.6994841.563736e-07
1.834811.6993261.607686e-07
1.843951.6991661.651856e-07
1.853151.6990051.696246e-07
1.862391.6988431.740858e-07
1.871671.698681.785691e-07
1.8811.6985161.830748e-07
1.890381.6983511.876030e-07
1.89981.6981841.921538e-07
1.909271.6980161.967272e-07
1.918791.6978472.013235e-07
1.928351.6976772.059426e-07
1.937971.6975062.105848e-07
1.947631.6973332.152501e-07
1.957341.6971592.199387e-07
1.96711.6969842.246506e-07
1.97691.6968072.293861e-07
1.986761.6966292.341451e-07
1.996661.6964492.389279e-07
21.6963892.405400e-07
2.006621.6962692.610686e-07
2.016621.6960862.921107e-07
2.026671.6959033.233076e-07
2.036771.6957183.546600e-07
2.046931.6955313.861687e-07
2.057131.6953434.178345e-07
2.067391.6951534.496581e-07
2.077691.6949624.816404e-07
2.088051.6947695.137822e-07
2.098461.6945755.460841e-07
2.108921.6943795.785471e-07
2.119441.6941816.111719e-07
2.131.6939826.439594e-07
2.140621.6937816.769103e-07
2.151291.6935787.100255e-07
2.162021.6933747.433057e-07
2.172791.6931687.767519e-07
2.183621.692968.103648e-07
2.194511.692758.441452e-07
2.21.6926448.611800e-07
2.205451.6925388.649561e-07
2.216451.6923258.725731e-07
2.227491.6921098.802281e-07
2.23861.6918928.879212e-07
2.249761.6916738.956527e-07
2.260971.6914529.034227e-07
2.272251.6912299.112314e-07
2.283571.6910049.190791e-07
2.294961.6907769.269659e-07
2.30641.6905479.348920e-07
2.317891.6903169.428576e-07
2.329451.6900829.508629e-07
2.341061.6898479.589082e-07
2.352731.6896099.669935e-07
2.364461.6893699.751192e-07
2.376251.6891279.832853e-07
2.38811.6888829.914922e-07
2.41.6886359.997400e-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
—