Optical constants

Refractive index of S-TIH14 (OHARA)

S-TIH14: n,k 0.37–2.4 µm

Data
formula 2 + tabulated k
Range
0.37–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.37–2.4 µm
Refractive index n
1.76182
Extinction coefficient k
3.28468e-08
Permittivity ε1
3.10399
Permittivity ε2
1.15740e-07
Absorption coefficient α
0.0070246 cm⁻¹
Penetration depth δ = λ/(2πk)
2.84714e+09 nm
Abbe number Vd
26.518
Chromatic dispersion dn/dλ
-0.143826 µm⁻¹
Group index ng
1.84633
Group velocity dispersion
295.797 fs²/mm
Dispersion parameter D
-1613.73 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-TIH14 (OHARA): S-TIH14
ohara_s_tih14 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIH14", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tih14.range_nm)  # (370, 2400) nm
eps = ohara_s_tih14.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=1.68915108λ2λ2−0.0128202514+0.290462024λ2λ2−0.0618090841+2.37971516λ2λ2−201.094352

Valid from 0.37 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.68915108
C30.0128202514
C40.290462024
C50.0618090841
C62.37971516
C7201.094352

Comments and conditions

Recommended - Lightweight

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -2.83e-06 1.27e-08 -3.36e-11 8.35e-07 1.16e-09 0.31
nd
1.761821
Vd
26.517885
glass code
762265
density
value: 3170
thermal expansion
value: 8.7e-06, temperature range: 243 343; value: 1e-05, temperature range: 293 573
dPgF
0.015
resistance
acid: 1.0; climatic: 2.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = -5.26e-08 K⁻¹ at 633 nm, dn/dT = -1.33e-06 K⁻¹ at 1310 nm, dn/dT = -1.41e-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 421 wavelengths, the same grid as the API and the library
S-TIH14 (OHARA), S-TIH14: n and k versus wavelength
λ (µm)nk
0.371.8416316.779700e-06
0.3717381.8400446.044987e-06
0.3734841.8384875.306824e-06
0.3752381.836964.565193e-06
0.3770011.8354613.820079e-06
0.3787711.8339913.071465e-06
0.381.8329912.552100e-06
0.3805511.8325482.472530e-06
0.3823381.8311322.214207e-06
0.3841341.8297421.954671e-06
0.3859381.8283761.693916e-06
0.3877511.8270351.431937e-06
0.3895721.8257171.168727e-06
0.391.8254121.106900e-06
0.3914021.8244231.029520e-06
0.393241.8231519.280536e-07
0.3950871.8219018.261109e-07
0.3969431.8206737.236893e-07
0.3988081.8194656.207867e-07
0.41.8187065.549800e-07
0.4006811.8182785.438554e-07
0.4025631.817115.131063e-07
0.4044541.8159624.822127e-07
0.4063531.8148324.511741e-07
0.4082621.8137214.199896e-07
0.410181.8126283.886587e-07
0.4121061.8115523.571807e-07
0.4140421.8104943.255547e-07
0.4159871.8094522.937802e-07
0.4179411.8084272.618565e-07
0.4199041.8074172.297828e-07
0.421.8073682.282100e-07
0.4218761.8064232.202106e-07
0.4238581.8054452.117613e-07
0.4258481.8044812.032722e-07
0.4278491.8035321.947433e-07
0.4298581.8025971.861743e-07
0.4318771.8016761.775651e-07
0.4339061.8007691.689154e-07
0.4359441.7998751.602251e-07
0.4379921.7989951.514940e-07
0.441.7981471.429300e-07
0.4400491.7981271.428441e-07
0.4421161.7972721.392063e-07
0.4441921.7964291.355515e-07
0.4462791.7955981.318794e-07
0.4483751.7947791.281902e-07
0.4504811.7939711.244836e-07
0.4525971.7931751.207596e-07
0.4547231.792391.170181e-07
0.4568591.7916161.132590e-07
0.4590041.7908531.094822e-07
0.461.7905041.077300e-07
0.461161.79011.066364e-07
0.4633261.7893581.045948e-07
0.4655031.7886251.025437e-07
0.4676891.7879031.004830e-07
0.4698861.787199.841254e-08
0.4720931.7864879.633238e-08
0.474311.7857939.424246e-08
0.4765381.7851089.214272e-08
0.4787771.7844339.003311e-08
0.481.7840698.888000e-08
0.4810251.7837668.782091e-08
0.4832851.7831088.548719e-08
0.4855551.7824598.314251e-08
0.4878351.7818188.078682e-08
0.4901271.7811857.842007e-08
0.4924291.7805617.604219e-08
0.4947421.7799447.365315e-08
0.4970661.7793367.125289e-08
0.49941.7787356.884135e-08
0.51.7785826.822200e-08
0.5017461.7781416.691325e-08
0.5041031.7775556.514681e-08
0.5064711.7769766.337206e-08
0.5088491.7764056.158898e-08
0.511241.7758415.979753e-08
0.5136411.7752835.799766e-08
0.5160531.7747335.618933e-08
0.5184771.7741895.437252e-08
0.5209131.7736525.254716e-08
0.5233591.7731215.071324e-08
0.5258181.7725974.887070e-08
0.5282871.7720794.701951e-08
0.5307691.7715674.515962e-08
0.5332621.7710614.329099e-08
0.5357661.7705624.141359e-08
0.5382831.7700683.952737e-08
0.5408111.769583.763229e-08
0.5433521.7690983.572831e-08
0.5459041.7686223.381539e-08
0.5484681.7681513.189348e-08
0.551.7678733.074500e-08
0.5510441.7676853.080335e-08
0.5536321.7672253.094804e-08
0.5562331.766773.109340e-08
0.5588451.7663213.123945e-08
0.561471.7658763.138618e-08
0.5641071.7654373.153360e-08
0.5667571.7650033.168172e-08
0.5694191.7645733.183052e-08
0.5720941.7641493.198003e-08
0.5747811.7637293.213024e-08
0.577481.7633143.228116e-08
0.5801931.7629043.243278e-08
0.5829181.7624983.258512e-08
0.5856561.7620963.273818e-08
0.5884071.7616993.289195e-08
0.5911711.7613073.304644e-08
0.5939471.7609193.320166e-08
0.5967371.7605353.335761e-08
0.599541.7601553.351429e-08
0.61.7600933.354000e-08
0.6023561.7597793.440922e-08
0.6051851.7594073.545300e-08
0.6080281.759043.650168e-08
0.6108841.7586763.755528e-08
0.6137531.7583163.861383e-08
0.6166361.757963.967736e-08
0.6195321.7576084.074588e-08
0.6224421.757264.181942e-08
0.6253661.7569154.289800e-08
0.6283031.7565744.398165e-08
0.6312541.7562364.507039e-08
0.6342191.7559024.616424e-08
0.6371981.7555714.726323e-08
0.6401911.7552444.836738e-08
0.6431981.754924.947672e-08
0.6462191.75465.059127e-08
0.6492551.7542835.171105e-08
0.651.7542055.198600e-08
0.6523041.7539695.165220e-08
0.6553681.7536585.120837e-08
0.6584461.753355.076245e-08
0.6615391.7530465.031444e-08
0.6646461.7527444.986432e-08
0.6677681.7524464.941209e-08
0.6709051.752154.895773e-08
0.6740561.7518584.850124e-08
0.6772221.7515684.804261e-08
0.6804031.7512814.758182e-08
0.6835991.7509984.711887e-08
0.686811.7507164.665374e-08
0.6900361.7504384.618643e-08
0.6932771.7501624.571692e-08
0.6965331.7498894.524521e-08
0.6998051.7496194.477128e-08
0.71.7496034.474300e-08
0.7030921.7493514.395101e-08
0.7063941.7490864.310506e-08
0.7097121.7488234.225514e-08
0.7130461.7485634.140122e-08
0.7163951.7483054.054329e-08
0.719761.748053.968134e-08
0.723141.7477973.881533e-08
0.7265371.7475463.794526e-08
0.729951.7472983.707110e-08
0.7333781.7470523.619283e-08
0.7368231.7468093.531044e-08
0.7402841.7465673.442391e-08
0.7437611.7463283.353321e-08
0.7472541.7460913.263832e-08
0.7507641.7458563.173924e-08
0.7542911.7456233.083593e-08
0.7578331.7453932.992837e-08
0.7613931.7451642.901656e-08
0.7649691.7449372.810046e-08
0.7685621.7447132.718006e-08
0.7721721.744492.625533e-08
0.7757991.744272.532627e-08
0.7794431.7440512.439283e-08
0.7831041.7438342.345502e-08
0.7867821.7436192.251280e-08
0.7904781.7434062.156615e-08
0.7941911.7431952.061506e-08
0.7979211.7429851.965950e-08
0.81.7428691.912700e-08
0.8016691.7427771.892735e-08
0.8054351.7425711.847695e-08
0.8092181.7423671.802444e-08
0.8130191.7421641.756980e-08
0.8168371.7419641.711302e-08
0.8206741.7417641.665410e-08
0.8245291.7415671.619302e-08
0.8284021.7413711.572977e-08
0.8322931.7411761.526435e-08
0.8362021.7409831.479675e-08
0.840131.7407921.432695e-08
0.8440761.7406021.385494e-08
0.848041.7404141.338071e-08
0.8520241.7402271.290426e-08
0.8560251.7400421.242557e-08
0.8600461.7398581.194463e-08
0.8640861.7396751.146143e-08
0.8681451.7394941.097596e-08
0.8722221.7393141.048821e-08
0.8763191.7391369.998173e-09
0.8804351.7389599.505832e-09
0.8845711.7387839.011178e-09
0.8887251.7386098.514201e-09
0.89291.7384358.014890e-09
0.8970941.7382637.513233e-09
0.91.7381457.165600e-09
0.9013071.7380937.176008e-09
0.9055411.7379237.209711e-09
0.9097941.7377557.243571e-09
0.9140671.7375887.277591e-09
0.9183611.7374227.311771e-09
0.9226741.7372577.346111e-09
0.9270081.7370937.380613e-09
0.9313621.7369317.415276e-09
0.9357371.7367697.450102e-09
0.9401321.7366097.485092e-09
0.9445481.7364497.520247e-09
0.9489851.7362917.555566e-09
0.9534421.7361337.591051e-09
0.957921.7359777.626703e-09
0.962421.7358227.662523e-09
0.966941.7356677.698511e-09
0.9714821.7355147.734667e-09
0.9760451.7353627.770994e-09
0.9806291.735217.807491e-09
0.9852351.7350597.844160e-09
0.9898631.734917.881000e-09
0.9945131.7347617.918014e-09
0.9991841.7346137.955202e-09
11.7345877.961700e-09
1.003881.7344667.992568e-09
1.008591.7343198.030111e-09
1.013331.7341748.067830e-09
1.018091.7340298.105726e-09
1.022871.7338858.143800e-09
1.027681.7337428.182053e-09
1.03251.73368.220486e-09
1.037351.7334588.259099e-09
1.042221.7333178.297893e-09
1.047121.7331778.336870e-09
1.052041.7330378.376030e-09
1.056981.7328998.415374e-09
1.061941.7327618.454902e-09
1.066931.7326238.494616e-09
1.071941.7324868.534517e-09
1.076981.732358.574605e-09
1.082041.7322148.614882e-09
1.087121.7320798.655347e-09
1.092231.7319458.696003e-09
1.097361.7318118.736850e-09
1.102511.7316788.777888e-09
1.107691.7315458.819120e-09
1.112891.7314138.860545e-09
1.118121.7312818.902164e-09
1.123371.731158.943979e-09
1.128651.7310198.985990e-09
1.133951.7308899.028199e-09
1.139271.7307599.070606e-09
1.144631.730639.113212e-09
1.151.7305019.156019e-09
1.15541.7303739.199026e-09
1.160831.7302459.242235e-09
1.166281.7301179.285648e-09
1.171761.729999.329264e-09
1.177271.7298639.373085e-09
1.182791.7297379.417112e-09
1.188351.7296119.461346e-09
1.193931.7294859.505787e-09
1.199541.729369.550437e-09
1.21.7293499.554100e-09
1.205171.7292351.017291e-08
1.210831.729111.084990e-08
1.216521.7289851.153007e-08
1.222241.7288611.221344e-08
1.227981.7287371.290001e-08
1.233741.7286141.358981e-08
1.239541.728491.428285e-08
1.245361.7283671.497915e-08
1.251211.7282441.567872e-08
1.257091.7281211.638157e-08
1.262991.7279991.708772e-08
1.268931.7278761.779719e-08
1.274891.7277541.850999e-08
1.280871.7276321.922614e-08
1.286891.727511.994566e-08
1.292931.7273892.066855e-08
1.299011.7272672.139484e-08
1.305111.7271452.212454e-08
1.311241.7270242.285767e-08
1.31741.7269032.359424e-08
1.323591.7267822.433427e-08
1.32981.726662.507778e-08
1.336051.7265392.582478e-08
1.342321.7264182.657529e-08
1.348631.7262972.732932e-08
1.354961.7261762.808689e-08
1.361331.7260552.884803e-08
1.367721.7259342.961274e-08
1.374151.7258133.038104e-08
1.38061.7256923.115295e-08
1.387091.7255713.192848e-08
1.39361.725453.270766e-08
1.41.7253323.347300e-08
1.400151.7253293.348584e-08
1.406721.7252083.406323e-08
1.413331.7250873.464332e-08
1.419971.7249653.522614e-08
1.426641.7248443.581170e-08
1.433341.7247223.640001e-08
1.440071.72463.699108e-08
1.446841.7244793.758493e-08
1.453631.7243573.818157e-08
1.460461.7242343.878101e-08
1.467321.7241123.938327e-08
1.474211.7239893.998835e-08
1.481141.7238674.059628e-08
1.488091.7237444.120706e-08
1.495081.7236214.182071e-08
1.50211.7234974.243725e-08
1.509161.7233744.305667e-08
1.516251.723254.367901e-08
1.523371.7231264.430428e-08
1.530531.7230014.493247e-08
1.537711.7228764.556362e-08
1.544941.7227514.619774e-08
1.552191.7226264.683483e-08
1.559481.72254.747491e-08
1.566811.7223744.811801e-08
1.574171.7222484.876412e-08
1.581561.7221214.941326e-08
1.588991.7219945.006546e-08
1.596451.7218675.072072e-08
1.61.7218065.103200e-08
1.603951.7217395.344133e-08
1.611491.721615.803310e-08
1.619061.7214826.264644e-08
1.626661.7213526.728145e-08
1.63431.7212237.193822e-08
1.641981.7210937.661687e-08
1.649691.7209628.131750e-08
1.657441.7208318.604020e-08
1.665221.72079.078509e-08
1.673051.7205689.555226e-08
1.68091.7204351.003418e-07
1.68881.7203021.051539e-07
1.696731.7201681.099886e-07
1.70471.7200341.148459e-07
1.712711.7198991.197261e-07
1.720751.7197641.246292e-07
1.728831.7196281.295554e-07
1.736951.7194911.345046e-07
1.745111.7193541.394772e-07
1.753311.7192161.444731e-07
1.761551.7190781.494924e-07
1.769821.7189381.545353e-07
1.778131.7187981.596019e-07
1.786481.7186581.646923e-07
1.794881.7185171.698067e-07
1.81.718431.729300e-07
1.803311.7183751.748501e-07
1.811781.7182321.797696e-07
1.820291.7180881.847122e-07
1.828841.7179441.896780e-07
1.837431.7177991.946671e-07
1.846061.7176531.996796e-07
1.854731.7175072.047157e-07
1.863441.7173592.097755e-07
1.872191.7172112.148590e-07
1.880991.7170622.199664e-07
1.889821.7169122.250977e-07
1.89871.7167612.302532e-07
1.907621.7166092.354329e-07
1.916581.7164562.406369e-07
1.925581.7163032.458654e-07
1.934621.7161482.511184e-07
1.943711.7159932.563961e-07
1.952841.7158362.616986e-07
1.962011.7156792.670260e-07
1.971231.715522.723784e-07
1.980491.7153612.777560e-07
1.989791.71522.831588e-07
1.999131.7150392.885870e-07
21.7150242.890900e-07
2.008521.7148763.064515e-07
2.017961.7147133.256668e-07
2.027441.7145483.449723e-07
2.036961.7143823.643686e-07
2.046531.7142153.838559e-07
2.056141.7140474.034348e-07
2.06581.7138774.231056e-07
2.07551.7137074.428688e-07
2.085251.7135354.627249e-07
2.095041.7133624.826742e-07
2.104881.7131885.027172e-07
2.114771.7130135.228544e-07
2.12471.7128365.430862e-07
2.134681.7126585.634129e-07
2.144711.7124795.838352e-07
2.154781.7122986.043534e-07
2.16491.7121166.249679e-07
2.175071.7119336.456793e-07
2.185291.7117486.664880e-07
2.195551.7115626.873944e-07
2.21.7114816.964500e-07
2.205871.7113757.094928e-07
2.216231.7111867.325279e-07
2.226641.7109957.556711e-07
2.23711.7108037.789231e-07
2.24761.710618.022843e-07
2.258161.7104158.257552e-07
2.268771.7102198.493363e-07
2.279421.7100218.730282e-07
2.290131.7098218.968314e-07
2.300891.709629.207464e-07
2.311691.7094189.447737e-07
2.322551.7092139.689139e-07
2.333461.7090079.931675e-07
2.344421.70881.017535e-06
2.355431.708591.042017e-06
2.36651.7083791.066614e-06
2.377611.7081661.091326e-06
2.388781.7079511.116155e-06
2.41.7077351.141100e-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
—