Optical constants

Refractive index of S-TIH53 (OHARA)

S-TIH53: 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
1.84665
Extinction coefficient k
5.39178e-08
Permittivity ε1
3.41013
Permittivity ε2
1.99135e-07
Absorption coefficient α
0.0115308 cm⁻¹
Penetration depth δ = λ/(2πk)
1.73448e+09 nm
Abbe number Vd
23.778
Chromatic dispersion dn/dλ
-0.177717 µm⁻¹
Group index ng
1.95108
Group velocity dispersion
370.906 fs²/mm
Dispersion parameter D
-2023.49 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-TIH53 (OHARA): S-TIH53
ohara_s_tih53 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIH53", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tih53.range_nm)  # (370, 2400) nm
eps = ohara_s_tih53.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=1.87904886λ2λ2−0.014412177+0.369719775λ2λ2−0.063881799+2.33730863λ2λ2−182.66818

Valid from 0.37 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.87904886
C30.014412177
C40.369719775
C50.063881799
C62.33730863
C7182.66818

Comments and conditions

Recommended - Lightweight

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -4.85e-06 8.97e-09 -3.32e-11 1.13e-06 1.6e-09 0.29
nd
1.846660
Vd
23.777940
glass code
847238
density
value: 3540
thermal expansion
value: 8.8e-06, temperature range: 243 343; value: 1.04e-05, temperature range: 293 573
dPgF
0.0175
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = -8.30e-07 K⁻¹ at 633 nm, dn/dT = -2.60e-06 K⁻¹ at 1310 nm, dn/dT = -2.71e-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-TIH53 (OHARA), S-TIH53: n and k versus wavelength
λ (µm)nk
0.371.9471958.283700e-06
0.3717381.9451577.395792e-06
0.3734841.9431616.503713e-06
0.3752381.9412045.607445e-06
0.3770011.9392864.706966e-06
0.3787711.9374053.802258e-06
0.381.9361263.174600e-06
0.3805511.935563.084277e-06
0.3823381.9337512.791045e-06
0.3841341.9319752.496436e-06
0.3859381.9302332.200444e-06
0.3877511.9285231.903061e-06
0.3895721.9268451.604282e-06
0.391.9264561.534100e-06
0.3914021.9251971.447402e-06
0.393241.9235781.333718e-06
0.3950871.9219891.219499e-06
0.3969431.9204271.104745e-06
0.3988081.9188939.894509e-07
0.41.917939.157200e-07
0.4006811.9173869.003910e-07
0.4025631.9159048.580205e-07
0.4044541.9144488.154510e-07
0.4063531.9130167.726815e-07
0.4082621.9116097.297112e-07
0.410181.9102256.865390e-07
0.4121061.9088636.431640e-07
0.4140421.9075255.995853e-07
0.4159871.9062075.558020e-07
0.4179411.9049125.118129e-07
0.4199041.9036374.676173e-07
0.421.9035754.654500e-07
0.4218761.9023824.466860e-07
0.4238581.9011474.268664e-07
0.4258481.8999314.069538e-07
0.4278491.8987353.869476e-07
0.4298581.8975573.668475e-07
0.4318771.8963973.466530e-07
0.4339061.8952543.263636e-07
0.4359441.8941293.059789e-07
0.4379921.8930212.854984e-07
0.441.8919562.654100e-07
0.4400491.891932.652393e-07
0.4421161.8908552.580124e-07
0.4441921.8897962.507514e-07
0.4462791.8887522.434564e-07
0.4483751.8877232.361271e-07
0.4504811.886712.287634e-07
0.4525971.8857112.213651e-07
0.4547231.8847262.139321e-07
0.4568591.8837562.064641e-07
0.4590041.8827991.989611e-07
0.461.8823611.954800e-07
0.461161.8818561.929545e-07
0.4633261.8809251.882400e-07
0.4655031.8800081.835034e-07
0.4676891.8791041.787445e-07
0.4698861.8782121.739633e-07
0.4720931.8773321.691597e-07
0.474311.8764651.643334e-07
0.4765381.8756091.594845e-07
0.4787771.8747651.546129e-07
0.481.874311.519500e-07
0.4810251.8739321.501628e-07
0.4832851.873111.462247e-07
0.4855551.8722991.422681e-07
0.4878351.8714991.382929e-07
0.4901271.8707091.342991e-07
0.4924291.869931.302864e-07
0.4947421.8691611.262550e-07
0.4970661.8684021.222046e-07
0.49941.8676531.181351e-07
0.51.8674631.170900e-07
0.5017461.8669131.150010e-07
0.5041031.8661831.121815e-07
0.5064711.8654631.093488e-07
0.5088491.8647511.065027e-07
0.511241.8640491.036433e-07
0.5136411.8633551.007704e-07
0.5160531.862679.788403e-08
0.5184771.8619939.498411e-08
0.5209131.8613259.207057e-08
0.5233591.8606668.914335e-08
0.5258181.8600148.620238e-08
0.5282871.859378.324759e-08
0.5307691.8587358.027893e-08
0.5332621.8581077.729632e-08
0.5357661.8574867.429970e-08
0.5382831.8568747.128901e-08
0.5408111.8562686.826417e-08
0.5433521.855676.522513e-08
0.5459041.8550796.217181e-08
0.5484681.8544955.910415e-08
0.551.8541515.727100e-08
0.5510441.8539185.717790e-08
0.5536321.8533485.694708e-08
0.5562331.8527845.671518e-08
0.5588451.8522275.648218e-08
0.561471.8516775.624809e-08
0.5641071.8511335.601291e-08
0.5667571.8505955.577661e-08
0.5694191.8500645.553921e-08
0.5720941.8495385.530069e-08
0.5747811.8490195.506105e-08
0.577481.8485065.482029e-08
0.5801931.8479985.457839e-08
0.5829181.8474965.433536e-08
0.5856561.8475.409119e-08
0.5884071.846515.384587e-08
0.5911711.8460255.359940e-08
0.5939471.8455455.335177e-08
0.5967371.8450715.310298e-08
0.599541.8446025.285302e-08
0.61.8445265.281200e-08
0.6023561.8441385.400721e-08
0.6051851.843685.544245e-08
0.6080281.8432265.688442e-08
0.6108841.8427785.833317e-08
0.6137531.8423345.978873e-08
0.6166361.8418956.125112e-08
0.6195321.8414616.272038e-08
0.6224421.8410326.419654e-08
0.6253661.8406076.567963e-08
0.6283031.8401876.716969e-08
0.6312541.8397716.866675e-08
0.6342191.839367.017084e-08
0.6371981.8389537.168200e-08
0.6401911.838557.320025e-08
0.6431981.8381527.472563e-08
0.6462191.8377577.625818e-08
0.6492551.8373677.779793e-08
0.651.8372737.817600e-08
0.6523041.8369827.741273e-08
0.6553681.83667.639785e-08
0.6584461.8362227.537820e-08
0.6615391.8358487.435377e-08
0.6646461.8354777.332452e-08
0.6677681.8351117.229044e-08
0.6709051.8347487.125150e-08
0.6740561.8343897.020768e-08
0.6772221.8340346.915895e-08
0.6804031.8336826.810531e-08
0.6835991.8333346.704671e-08
0.686811.832996.598314e-08
0.6900361.8326486.491457e-08
0.6932771.8323116.384099e-08
0.6965331.8319766.276236e-08
0.6998051.8316456.167867e-08
0.71.8316256.161400e-08
0.7030921.8313176.030040e-08
0.7063941.8309925.889730e-08
0.7097121.8306715.748760e-08
0.7130461.8303535.607129e-08
0.7163951.8300385.464832e-08
0.719761.8297255.321867e-08
0.723141.8294165.178230e-08
0.7265371.829115.033919e-08
0.729951.8288074.888929e-08
0.7333781.8285064.743259e-08
0.7368231.8282094.596905e-08
0.7402841.8279144.449863e-08
0.7437611.8276224.302130e-08
0.7472541.8273334.153704e-08
0.7507641.8270474.004580e-08
0.7542911.8267633.854756e-08
0.7578331.8264823.704228e-08
0.7613931.8262033.552994e-08
0.7649691.8259273.401048e-08
0.7685621.8256543.248390e-08
0.7721721.8253833.095014e-08
0.7757991.8251152.940917e-08
0.7794431.8248492.786097e-08
0.7831041.8245852.630550e-08
0.7867821.8243242.474272e-08
0.7904781.8240652.317260e-08
0.7941911.8238082.159511e-08
0.7979211.8235532.001021e-08
0.81.8234131.912700e-08
0.8016691.8233011.904707e-08
0.8054351.8230511.886674e-08
0.8092181.8228041.868557e-08
0.8130191.8225581.850354e-08
0.8168371.8223141.832066e-08
0.8206741.8220731.813692e-08
0.8245291.8218341.795232e-08
0.8284021.8215961.776685e-08
0.8322931.8213611.758051e-08
0.8362021.8211281.739329e-08
0.840131.8208961.720520e-08
0.8440761.8206671.701622e-08
0.848041.8204391.682635e-08
0.8520241.8202131.663559e-08
0.8560251.819991.644394e-08
0.8600461.8197681.625139e-08
0.8640861.8195471.605793e-08
0.8681451.8193291.586356e-08
0.8722221.8191121.566828e-08
0.8763191.8188971.547208e-08
0.8804351.8186841.527496e-08
0.8845711.8184721.507692e-08
0.8887251.8182621.487794e-08
0.89291.8180541.467803e-08
0.8970941.8178471.447718e-08
0.91.8177051.433800e-08
0.9013071.8176421.425464e-08
0.9055411.8174381.398470e-08
0.9097941.8172361.371349e-08
0.9140671.8170361.344102e-08
0.9183611.8168361.316726e-08
0.9226741.8166391.289221e-08
0.9270081.8164431.261587e-08
0.9313621.8162481.233824e-08
0.9357371.8160541.205930e-08
0.9401321.8158621.177905e-08
0.9445481.8156721.149749e-08
0.9489851.8154831.121460e-08
0.9534421.8152951.093038e-08
0.957921.8151081.064483e-08
0.962421.8149231.035794e-08
0.966941.8147381.006969e-08
0.9714821.8145559.780100e-09
0.9760451.8143749.489146e-09
0.9806291.8141939.196824e-09
0.9852351.8140148.903130e-09
0.9898631.8138368.608056e-09
0.9945131.8136598.311597e-09
0.9991841.8134838.013744e-09
11.8134537.961700e-09
1.003881.8133087.992568e-09
1.008591.8131358.030111e-09
1.013331.8129628.067830e-09
1.018091.8127918.105726e-09
1.022871.812628.143800e-09
1.027681.812458.182053e-09
1.03251.8122828.220486e-09
1.037351.8121148.259099e-09
1.042221.8119488.297893e-09
1.047121.8117828.336870e-09
1.052041.8116188.376030e-09
1.056981.8114548.415374e-09
1.061941.8112918.454902e-09
1.066931.8111298.494616e-09
1.071941.8109688.534517e-09
1.076981.8108088.574605e-09
1.082041.8106488.614882e-09
1.087121.810498.655347e-09
1.092231.8103328.696003e-09
1.097361.8101758.736850e-09
1.102511.8100188.777888e-09
1.107691.8098638.819120e-09
1.112891.8097088.860545e-09
1.118121.8095548.902164e-09
1.123371.80948.943979e-09
1.128651.8092488.985990e-09
1.133951.8090969.028199e-09
1.139271.8089449.070606e-09
1.144631.8087949.113212e-09
1.151.8086439.156019e-09
1.15541.8084949.199026e-09
1.160831.8083459.242235e-09
1.166281.8081979.285648e-09
1.171761.8080499.329264e-09
1.177271.8079029.373085e-09
1.182791.8077559.417112e-09
1.188351.8076099.461346e-09
1.193931.8074639.505787e-09
1.199541.8073189.550437e-09
1.21.8073069.554100e-09
1.205171.8071749.883955e-09
1.210831.8070291.024482e-08
1.216521.8068861.060739e-08
1.222241.8067421.097165e-08
1.227981.8065991.133763e-08
1.233741.8064571.170533e-08
1.239541.8063151.207475e-08
1.245361.8061731.244591e-08
1.251211.8060321.281881e-08
1.257091.8058911.319346e-08
1.262991.805751.356987e-08
1.268931.805611.394806e-08
1.274891.805471.432801e-08
1.280871.805331.470975e-08
1.286891.8051911.509329e-08
1.292931.8050521.547863e-08
1.299011.8049131.586577e-08
1.305111.8047741.625474e-08
1.311241.8046361.664553e-08
1.31741.8044981.703816e-08
1.323591.804361.743263e-08
1.32981.8042221.782895e-08
1.336051.8040841.822714e-08
1.342321.8039471.862719e-08
1.348631.803811.902913e-08
1.354961.8036721.943295e-08
1.361331.8035351.983867e-08
1.367721.8033992.024630e-08
1.374151.8032622.065584e-08
1.38061.8031252.106730e-08
1.387091.8029882.148070e-08
1.39361.8028522.189604e-08
1.41.8027182.230400e-08
1.400151.8027152.231567e-08
1.406721.8025792.284018e-08
1.413331.8024422.336715e-08
1.419971.8023062.389660e-08
1.426641.8021692.442853e-08
1.433341.8020332.496297e-08
1.440071.8018962.549991e-08
1.446841.801762.603937e-08
1.453631.8016232.658137e-08
1.460461.8014862.712592e-08
1.467321.8013492.767302e-08
1.474211.8012122.822270e-08
1.481141.8010752.877495e-08
1.488091.8009382.932980e-08
1.495081.8008012.988725e-08
1.50211.8006643.044733e-08
1.509161.8005263.101003e-08
1.516251.8003883.157538e-08
1.523371.800253.214338e-08
1.530531.8001123.271405e-08
1.537711.7999743.328740e-08
1.544941.7998353.386344e-08
1.552191.7996963.444219e-08
1.559481.7995573.502366e-08
1.566811.7994183.560786e-08
1.574171.7992783.619480e-08
1.581561.7991383.678450e-08
1.588991.7989983.737697e-08
1.596451.7988573.797223e-08
1.61.7987913.825500e-08
1.603951.7987164.005847e-08
1.611491.7985754.349557e-08
1.619061.7984334.694882e-08
1.626661.7982915.041829e-08
1.63431.7981495.390405e-08
1.641981.7980065.740619e-08
1.649691.7978636.092478e-08
1.657441.7977196.445989e-08
1.665221.7975756.801161e-08
1.673051.797437.158000e-08
1.68091.7972857.516517e-08
1.68881.797147.876717e-08
1.696731.7969948.238608e-08
1.70471.7968478.602200e-08
1.712711.79678.967500e-08
1.720751.7965529.334515e-08
1.728831.7964049.703254e-08
1.736951.7962551.007373e-07
1.745111.7961061.044594e-07
1.753311.7959561.081990e-07
1.761551.7958051.119561e-07
1.769821.7956541.157309e-07
1.778131.7955021.195235e-07
1.786481.795351.233338e-07
1.794881.7951971.271621e-07
1.81.7951031.295000e-07
1.803311.7950431.310685e-07
1.811781.7948881.350872e-07
1.820291.7947331.391248e-07
1.828841.7945771.431813e-07
1.837431.794421.472568e-07
1.846061.7942621.513515e-07
1.854731.7941041.554655e-07
1.863441.7939451.595987e-07
1.872191.7937851.637514e-07
1.880991.7936241.679236e-07
1.889821.7934621.721153e-07
1.89871.79331.763268e-07
1.907621.7931361.805580e-07
1.916581.7929721.848091e-07
1.925581.7928071.890802e-07
1.934621.7926411.933714e-07
1.943711.7924741.976827e-07
1.952841.7923052.020142e-07
1.962011.7921362.063661e-07
1.971231.7919662.107385e-07
1.980491.7917952.151313e-07
1.989791.7916232.195449e-07
1.999131.791452.239791e-07
21.7914342.243900e-07
2.008521.7912762.344831e-07
2.017961.7911012.456540e-07
2.027441.7909242.568774e-07
2.036961.7907472.681534e-07
2.046531.7905682.794825e-07
2.056141.7903892.908647e-07
2.06581.7902083.023004e-07
2.07551.7900263.137898e-07
2.085251.7898423.253332e-07
2.095041.7896583.369308e-07
2.104881.7894723.485829e-07
2.114771.7892853.602897e-07
2.12471.7890973.720515e-07
2.134681.7889073.838685e-07
2.144711.7887163.957410e-07
2.154781.7885244.076693e-07
2.16491.788334.196537e-07
2.175071.7881354.316943e-07
2.185291.7879394.437915e-07
2.195551.7877414.559455e-07
2.21.7876554.612100e-07
2.205871.7875424.734758e-07
2.216231.7873414.951385e-07
2.226641.7871395.169030e-07
2.23711.7869355.387697e-07
2.24761.786735.607392e-07
2.258161.7865235.828118e-07
2.268771.7863146.049881e-07
2.279421.7861056.272686e-07
2.290131.7858936.496537e-07
2.300891.785686.721440e-07
2.311691.7854656.947399e-07
2.322551.7852487.174419e-07
2.333461.785037.402505e-07
2.344421.784817.631663e-07
2.355431.7845887.861898e-07
2.36651.7843658.093213e-07
2.377611.784148.325616e-07
2.388781.7839138.559109e-07
2.41.7836848.793700e-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
—