Optical constants

Refractive index of S-TIH3 (OHARA)

S-TIH3: 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
1.73999
Extinction coefficient k
2.81403e-08
Permittivity ε1
3.02758
Permittivity ε2
9.79278e-08
Absorption coefficient α
0.00601806 cm⁻¹
Penetration depth δ = λ/(2πk)
3.32333e+09 nm
Abbe number Vd
28.296
Chromatic dispersion dn/dλ
-0.131245 µm⁻¹
Group index ng
1.81711
Group velocity dispersion
267.073 fs²/mm
Dispersion parameter D
-1457.02 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-TIH3 (OHARA): S-TIH3
ohara_s_tih3 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIH3", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tih3.range_nm)  # (370, 2400) nm
eps = ohara_s_tih3.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=1.64797648λ2λ2−0.0121917693+0.267261917λ2λ2−0.0597893039+2.19772845λ2λ2−192.15834

Valid from 0.37 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.64797648
C30.0121917693
C40.267261917
C50.0597893039
C62.19772845
C7192.15834

Comments and conditions

Recommended - Lightweight

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -1.99e-06 1.19e-08 -3.46e-11 8.53e-07 1.06e-09 0.297
nd
1.739998
Vd
28.296005
glass code
740283
density
value: 3110
thermal expansion
value: 8.5e-06, temperature range: 243 343; value: 1e-05, temperature range: 293 573
dPgF
0.0122
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 4.28e-07 K⁻¹ at 633 nm, dn/dT = -8.23e-07 K⁻¹ at 1310 nm, dn/dT = -9.05e-07 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-TIH3 (OHARA), S-TIH3: n and k versus wavelength
λ (µm)nk
0.371.8116315.395800e-06
0.3717381.8102324.811937e-06
0.3734841.8088584.225331e-06
0.3752381.8075093.635970e-06
0.3770011.8061853.043841e-06
0.3787711.8048842.448930e-06
0.381.8039992.036200e-06
0.3805511.8036071.975542e-06
0.3823381.8023531.778616e-06
0.3841341.801121.580766e-06
0.3859381.7999091.381986e-06
0.3877511.7987191.182273e-06
0.3895721.7975499.816218e-07
0.391.7972789.344900e-07
0.3914021.7963998.760005e-07
0.393241.7952687.993053e-07
0.3950871.7941577.222498e-07
0.3969431.7930636.448324e-07
0.3988081.7919875.670514e-07
0.41.7913115.173100e-07
0.4006811.7909295.067390e-07
0.4025631.7898884.775199e-07
0.4044541.7888644.481636e-07
0.4063531.7878564.186695e-07
0.4082621.7868643.890367e-07
0.410181.7858873.592648e-07
0.4121061.7849263.293531e-07
0.4140421.7839792.993009e-07
0.4159871.7830472.691075e-07
0.4179411.7821292.387723e-07
0.4199041.7812252.082946e-07
0.421.7811812.068000e-07
0.4218761.7803351.994441e-07
0.4238581.7794581.916744e-07
0.4258481.7785931.838682e-07
0.4278491.7777421.760254e-07
0.4298581.7769031.681457e-07
0.4318771.7760771.602290e-07
0.4339061.7752621.522751e-07
0.4359441.7744591.442839e-07
0.4379921.7736671.362551e-07
0.441.7729061.283800e-07
0.4400491.7728871.282929e-07
0.4421161.7721181.246031e-07
0.4441921.771361.208960e-07
0.4462791.7706121.171715e-07
0.4483751.7698741.134295e-07
0.4504811.7691471.096700e-07
0.4525971.768431.058927e-07
0.4547231.7677231.020978e-07
0.4568591.7670259.828498e-08
0.4590041.7663369.445428e-08
0.461.7660219.267700e-08
0.461161.7656579.155122e-08
0.4633261.7649878.944969e-08
0.4655031.7643268.733829e-08
0.4676891.7636748.521698e-08
0.4698861.763038.308570e-08
0.4720931.7623958.094441e-08
0.474311.7617687.879306e-08
0.4765381.7611497.663161e-08
0.4787771.7605387.446000e-08
0.481.7602097.327300e-08
0.4810251.7599367.239247e-08
0.4832851.759347.045223e-08
0.4855551.7587536.850287e-08
0.4878351.7581736.654436e-08
0.4901271.75766.457664e-08
0.4924291.7570346.259969e-08
0.4947421.7564766.061344e-08
0.4970661.7559245.861787e-08
0.49941.755385.661293e-08
0.51.7552415.609800e-08
0.5017461.7548425.505881e-08
0.5041031.754315.365619e-08
0.5064711.7537865.224699e-08
0.5088491.7532675.083116e-08
0.511241.7527554.940868e-08
0.5136411.7522494.797953e-08
0.5160531.751754.654366e-08
0.5184771.7512564.510104e-08
0.5209131.7507684.365165e-08
0.5233591.7502864.219545e-08
0.5258181.749814.073242e-08
0.5282871.7493393.926251e-08
0.5307691.7488743.778569e-08
0.5332621.7484143.630194e-08
0.5357661.747963.481122e-08
0.5382831.7475113.331350e-08
0.5408111.7470673.180874e-08
0.5433521.7466293.029692e-08
0.5459041.7461952.877799e-08
0.5484681.7457672.725193e-08
0.551.7455142.634000e-08
0.5510441.7453432.638998e-08
0.5536321.7449242.651391e-08
0.5562331.744512.663842e-08
0.5588451.7441012.676351e-08
0.561471.7436962.688919e-08
0.5641071.7432962.701546e-08
0.5667571.74292.714232e-08
0.5694191.7425092.726978e-08
0.5720941.7421222.739784e-08
0.5747811.7417392.752650e-08
0.577481.741362.765577e-08
0.5801931.7409862.778564e-08
0.5829181.7406162.791612e-08
0.5856561.740252.804721e-08
0.5884071.7398872.817892e-08
0.5911711.7395292.831125e-08
0.5939471.7391752.844420e-08
0.5967371.7388242.857778e-08
0.599541.7384772.871198e-08
0.61.7384212.873400e-08
0.6023561.7381342.909218e-08
0.6051851.7377952.952228e-08
0.6080281.7374592.995441e-08
0.6108841.7371273.038857e-08
0.6137531.7367983.082476e-08
0.6166361.7364723.126301e-08
0.6195321.736153.170331e-08
0.6224421.7358323.214568e-08
0.6253661.7355173.259013e-08
0.6283031.7352053.303667e-08
0.6312541.7348963.348530e-08
0.6342191.734593.393604e-08
0.6371981.7342883.438890e-08
0.6401911.7339883.484388e-08
0.6431981.7336923.530101e-08
0.6462191.7333983.576028e-08
0.6492551.7331083.622170e-08
0.651.7330373.633500e-08
0.6523041.7328213.594728e-08
0.6553681.7325363.543175e-08
0.6584461.7322543.491380e-08
0.6615391.7319753.439342e-08
0.6646461.7316993.387059e-08
0.6677681.7314263.334531e-08
0.6709051.7311553.281756e-08
0.6740561.7308873.228733e-08
0.6772221.7306213.175461e-08
0.6804031.7303583.121939e-08
0.6835991.7300983.068165e-08
0.686811.729843.014139e-08
0.6900361.7295852.959859e-08
0.6932771.7293322.905324e-08
0.6965331.7290812.850533e-08
0.6998051.7288332.795485e-08
0.71.7288182.792200e-08
0.7030921.7285872.725564e-08
0.7063941.7283442.654388e-08
0.7097121.7281032.582878e-08
0.7130461.7278642.511032e-08
0.7163951.7276272.438848e-08
0.719761.7273922.366326e-08
0.723141.727162.293462e-08
0.7265371.726932.220257e-08
0.729951.7267022.146707e-08
0.7333781.7264762.072812e-08
0.7368231.7262521.998570e-08
0.7402841.726031.923980e-08
0.7437611.725811.849039e-08
0.7472541.7255921.773746e-08
0.7507641.7253761.698099e-08
0.7542911.7251621.622097e-08
0.7578331.7249491.545738e-08
0.7613931.7247391.469020e-08
0.7649691.724531.391942e-08
0.7685621.7243241.314502e-08
0.7721721.7241191.236698e-08
0.7757991.7239151.158529e-08
0.7794431.7237141.079993e-08
0.7831041.7235141.001088e-08
0.7867821.7233169.218117e-09
0.7904781.723128.421634e-09
0.7941911.7229257.621411e-09
0.7979211.7227326.817428e-09
0.81.7226256.369400e-09
0.8016691.722546.382689e-09
0.8054351.722356.412670e-09
0.8092181.7221626.442791e-09
0.8130191.7219756.473054e-09
0.8168371.721796.503459e-09
0.8206741.7216066.534007e-09
0.8245291.7214246.564698e-09
0.8284021.7212436.595533e-09
0.8322931.7210636.626514e-09
0.8362021.7208856.657639e-09
0.840131.7207086.688911e-09
0.8440761.7205336.720330e-09
0.848041.7203596.751897e-09
0.8520241.7201866.783611e-09
0.8560251.7200156.815475e-09
0.8600461.7198456.847488e-09
0.8640861.7196766.879652e-09
0.8681451.7195096.911967e-09
0.8722221.7193426.944433e-09
0.8763191.7191776.977052e-09
0.8804351.7190137.009825e-09
0.8845711.7188517.042751e-09
0.8887251.7186897.075832e-09
0.89291.7185297.109068e-09
0.8970941.718377.142460e-09
0.91.718267.165600e-09
0.9013071.7182127.176008e-09
0.9055411.7180547.209711e-09
0.9097941.7178997.243571e-09
0.9140671.7177447.277591e-09
0.9183611.717597.311771e-09
0.9226741.7174377.346111e-09
0.9270081.7172857.380613e-09
0.9313621.7171347.415276e-09
0.9357371.7169847.450102e-09
0.9401321.7168367.485092e-09
0.9445481.7166887.520247e-09
0.9489851.7165417.555566e-09
0.9534421.7163947.591051e-09
0.957921.7162497.626703e-09
0.962421.7161057.662523e-09
0.966941.7159627.698511e-09
0.9714821.7158197.734667e-09
0.9760451.7156777.770994e-09
0.9806291.7155367.807491e-09
0.9852351.7153967.844160e-09
0.9898631.7152577.881000e-09
0.9945131.7151187.918014e-09
0.9991841.7149817.955202e-09
11.7149577.961700e-09
1.003881.7148447.992568e-09
1.008591.7147078.030111e-09
1.013331.7145728.067830e-09
1.018091.7144378.105726e-09
1.022871.7143038.143800e-09
1.027681.714178.182053e-09
1.03251.7140378.220486e-09
1.037351.7139058.259099e-09
1.042221.7137738.297893e-09
1.047121.7136428.336870e-09
1.052041.7135128.376030e-09
1.056981.7133838.415374e-09
1.061941.7132548.454902e-09
1.066931.7131258.494616e-09
1.071941.7129978.534517e-09
1.076981.712878.574605e-09
1.082041.7127438.614882e-09
1.087121.7126178.655347e-09
1.092231.7124918.696003e-09
1.097361.7123668.736850e-09
1.102511.7122418.777888e-09
1.107691.7121178.819120e-09
1.112891.7119938.860545e-09
1.118121.711878.902164e-09
1.123371.7117478.943979e-09
1.128651.7116258.985990e-09
1.133951.7115039.028199e-09
1.139271.7113819.070606e-09
1.144631.711269.113212e-09
1.151.7111399.156019e-09
1.15541.7110189.199026e-09
1.160831.7108989.242235e-09
1.166281.7107789.285648e-09
1.171761.7106599.329264e-09
1.177271.710549.373085e-09
1.182791.7104219.417112e-09
1.188351.7103039.461346e-09
1.193931.7101849.505787e-09
1.199541.7100669.550437e-09
1.21.7100579.554100e-09
1.205171.7099491.017291e-08
1.210831.7098311.084990e-08
1.216521.7097141.153007e-08
1.222241.7095971.221344e-08
1.227981.709481.290001e-08
1.233741.7093641.358981e-08
1.239541.7092471.428285e-08
1.245361.7091311.497915e-08
1.251211.7090151.567872e-08
1.257091.7088991.638157e-08
1.262991.7087841.708772e-08
1.268931.7086681.779719e-08
1.274891.7085531.850999e-08
1.280871.7084381.922614e-08
1.286891.7083221.994566e-08
1.292931.7082072.066855e-08
1.299011.7080922.139484e-08
1.305111.7079772.212454e-08
1.311241.7078632.285767e-08
1.31741.7077482.359424e-08
1.323591.7076332.433427e-08
1.32981.7075182.507778e-08
1.336051.7074042.582478e-08
1.342321.7072892.657529e-08
1.348631.7071742.732932e-08
1.354961.7070592.808689e-08
1.361331.7069452.884803e-08
1.367721.706832.961274e-08
1.374151.7067153.038104e-08
1.38061.70663.115295e-08
1.387091.7064853.192848e-08
1.39361.706373.270766e-08
1.41.7062583.347300e-08
1.400151.7062553.348584e-08
1.406721.706143.406323e-08
1.413331.7060243.464332e-08
1.419971.7059093.522614e-08
1.426641.7057933.581170e-08
1.433341.7056783.640001e-08
1.440071.7055623.699108e-08
1.446841.7054463.758493e-08
1.453631.705333.818157e-08
1.460461.7052133.878101e-08
1.467321.7050963.938327e-08
1.474211.704983.998835e-08
1.481141.7048634.059628e-08
1.488091.7047454.120706e-08
1.495081.7046284.182071e-08
1.50211.704514.243725e-08
1.509161.7043924.305667e-08
1.516251.7042734.367901e-08
1.523371.7041554.430428e-08
1.530531.7040364.493247e-08
1.537711.7039174.556362e-08
1.544941.7037974.619774e-08
1.552191.7036774.683483e-08
1.559481.7035574.747491e-08
1.566811.7034364.811801e-08
1.574171.7033154.876412e-08
1.581561.7031944.941326e-08
1.588991.7030725.006546e-08
1.596451.702955.072072e-08
1.61.7028925.103200e-08
1.603951.7028275.344133e-08
1.611491.7027045.803310e-08
1.619061.7025816.264644e-08
1.626661.7024576.728145e-08
1.63431.7023337.193822e-08
1.641981.7022087.661687e-08
1.649691.7020838.131750e-08
1.657441.7019578.604020e-08
1.665221.701839.078509e-08
1.673051.7017039.555226e-08
1.68091.7015761.003418e-07
1.68881.7014481.051539e-07
1.696731.701321.099886e-07
1.70471.7011911.148459e-07
1.712711.7010611.197261e-07
1.720751.7009311.246292e-07
1.728831.70081.295554e-07
1.736951.7006681.345046e-07
1.745111.7005361.394772e-07
1.753311.7004031.444731e-07
1.761551.700271.494924e-07
1.769821.7001361.545353e-07
1.778131.7000011.596019e-07
1.786481.6998651.646923e-07
1.794881.6997291.698067e-07
1.81.6996461.729300e-07
1.803311.6995921.753865e-07
1.811781.6994541.816803e-07
1.820291.6993161.880036e-07
1.828841.6991771.943566e-07
1.837431.6990372.007395e-07
1.846061.6988962.071523e-07
1.854731.6987542.135952e-07
1.863441.6986122.200685e-07
1.872191.6984692.265721e-07
1.880991.6983242.331063e-07
1.889821.698182.396711e-07
1.89871.6980342.462668e-07
1.907621.6978872.528935e-07
1.916581.6977392.595513e-07
1.925581.6975912.662403e-07
1.934621.6974412.729608e-07
1.943711.6972912.797129e-07
1.952841.6971392.864967e-07
1.962011.6969872.933123e-07
1.971231.6968333.001599e-07
1.980491.6966793.070398e-07
1.989791.6965233.139519e-07
1.999131.6963673.208965e-07
21.6963523.215400e-07
2.008521.6962093.421913e-07
2.017961.6960513.650476e-07
2.027441.6958913.880114e-07
2.036961.695734.110830e-07
2.046531.6955684.342629e-07
2.056141.6954054.575518e-07
2.06581.6952414.809500e-07
2.07551.6950755.044581e-07
2.085251.6949095.280767e-07
2.095041.6947415.518062e-07
2.104881.6945725.756471e-07
2.114771.6944015.996001e-07
2.12471.694236.236655e-07
2.134681.6940576.478440e-07
2.144711.6938836.721360e-07
2.154781.6937086.965421e-07
2.16491.6935317.210629e-07
2.175071.6933537.456989e-07
2.185291.6931737.704505e-07
2.195551.6929927.953184e-07
2.21.6929148.060900e-07
2.205871.692818.212964e-07
2.216231.6926268.481526e-07
2.226641.6924418.751349e-07
2.23711.6922559.022440e-07
2.24761.6920679.294804e-07
2.258161.6918779.568447e-07
2.268771.6916869.843376e-07
2.279421.6914931.011960e-06
2.290131.6912991.039711e-06
2.300891.6911031.067593e-06
2.311691.6909061.095606e-06
2.322551.6907071.123751e-06
2.333461.6905071.152028e-06
2.344421.6903041.180438e-06
2.355431.69011.208981e-06
2.36651.6898951.237658e-06
2.377611.6896871.266470e-06
2.388781.6894781.295417e-06
2.41.6892671.324500e-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
—