Optical constants

Refractive index of S-TIH53W (OHARA)

S-TIH53W: 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
9.03318e-09
Permittivity ε1
3.41013
Permittivity ε2
3.33623e-08
Absorption coefficient α
0.00193183 cm⁻¹
Penetration depth δ = λ/(2πk)
1.03529e+10 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-TIH53W (OHARA): S-TIH53W
ohara_s_tih53w = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-TIH53W", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_tih53w.range_nm)  # (370, 2400) nm
eps = ohara_s_tih53w.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 - Improved Transmittance.

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-TIH53W (OHARA), S-TIH53W: n and k versus wavelength
λ (µm)nk
0.371.9471956.499000e-06
0.3717381.9451575.789174e-06
0.3734841.9431615.076014e-06
0.3752381.9412044.359504e-06
0.3770011.9392863.639629e-06
0.3787711.9374052.916373e-06
0.381.9361262.414600e-06
0.3805511.935562.340177e-06
0.3823381.9337512.098568e-06
0.3841341.9319751.855823e-06
0.3859381.9302331.611938e-06
0.3877511.9285231.366908e-06
0.3895721.9268451.120727e-06
0.391.9264561.062900e-06
0.3914021.9251979.970345e-07
0.393241.9235789.106673e-07
0.3950871.9219898.238945e-07
0.3969431.9204277.367141e-07
0.3988081.9188936.491242e-07
0.41.917935.931100e-07
0.4006811.9173865.826534e-07
0.4025631.9159045.537505e-07
0.4044541.9144485.247119e-07
0.4063531.9130164.955368e-07
0.4082621.9116094.662248e-07
0.410181.9102254.367750e-07
0.4121061.9088634.071870e-07
0.4140421.9075253.774599e-07
0.4159871.9062073.475933e-07
0.4179411.9049123.175863e-07
0.4199041.9036372.874384e-07
0.421.9035752.859600e-07
0.4218761.9023822.746035e-07
0.4238581.9011472.626081e-07
0.4258481.8999312.505564e-07
0.4278491.8987352.384481e-07
0.4298581.8975572.262829e-07
0.4318771.8963972.140606e-07
0.4339061.8952542.017809e-07
0.4359441.8941291.894435e-07
0.4379921.8930211.770481e-07
0.441.8919561.648900e-07
0.4400491.891931.647505e-07
0.4421161.8908551.588433e-07
0.4441921.8897961.529083e-07
0.4462791.8887521.469454e-07
0.4483751.8877231.409545e-07
0.4504811.886711.349355e-07
0.4525971.8857111.288882e-07
0.4547231.8847261.228125e-07
0.4568591.8837561.167083e-07
0.4590041.8827991.105754e-07
0.461.8823611.077300e-07
0.461161.8818561.059569e-07
0.4633261.8809251.026470e-07
0.4655031.8800089.932162e-08
0.4676891.8791049.598058e-08
0.4698861.8782129.262385e-08
0.4720931.8773328.925135e-08
0.474311.8764658.586301e-08
0.4765381.8756098.245875e-08
0.4787771.8747657.903851e-08
0.481.874317.716900e-08
0.4810251.8739327.608873e-08
0.4832851.873117.370836e-08
0.4855551.8722997.131681e-08
0.4878351.8714996.891402e-08
0.4901271.8707096.649995e-08
0.4924291.869936.407454e-08
0.4947421.8691616.163773e-08
0.4970661.8684025.918948e-08
0.49941.8676535.672973e-08
0.51.8674635.609800e-08
0.5017461.8669135.490512e-08
0.5041031.8661835.329507e-08
0.5064711.8654635.167745e-08
0.5088491.8647515.005223e-08
0.511241.8640494.841938e-08
0.5136411.8633554.677886e-08
0.5160531.862674.513064e-08
0.5184771.8619934.347467e-08
0.5209131.8613254.181092e-08
0.5233591.8606664.013936e-08
0.5258181.8600143.845995e-08
0.5282871.859373.677265e-08
0.5307691.8587353.507743e-08
0.5332621.8581073.337424e-08
0.5357661.8574863.166306e-08
0.5382831.8568742.994383e-08
0.5408111.8562682.821653e-08
0.5433521.855672.648112e-08
0.5459041.8550792.473756e-08
0.5484681.8544952.298580e-08
0.551.8541512.193900e-08
0.5510441.8539182.158069e-08
0.5536321.8533482.069229e-08
0.5562331.8527841.979973e-08
0.5588451.8522271.890297e-08
0.561471.8516771.800199e-08
0.5641071.8511331.709679e-08
0.5667571.8505951.618733e-08
0.5694191.8500641.527361e-08
0.5720941.8495381.435559e-08
0.5747811.8490191.343326e-08
0.577481.8485061.250659e-08
0.5801931.8479981.157558e-08
0.5829181.8474961.064019e-08
0.5856561.8479.700406e-09
0.5884071.846518.756210e-09
0.5911711.8460257.807578e-09
0.5939471.8455456.854491e-09
0.5967371.8450715.896927e-09
0.599541.8446024.934866e-09
0.61.8445264.777000e-09
0.6023561.8441384.795759e-09
0.6051851.843684.818286e-09
0.6080281.8432264.840919e-09
0.6108841.8427784.863657e-09
0.6137531.8423344.886503e-09
0.6166361.8418954.909456e-09
0.6195321.8414614.932517e-09
0.6224421.8410324.955686e-09
0.6253661.8406074.978964e-09
0.6283031.8401875.002351e-09
0.6312541.8397715.025848e-09
0.6342191.839365.049455e-09
0.6371981.8389535.073174e-09
0.6401911.838555.097003e-09
0.6431981.8381525.120945e-09
0.6462191.8377575.144999e-09
0.6492551.8373675.169166e-09
0.651.8372735.175100e-09
0.6523041.8369825.193447e-09
0.6553681.83665.217841e-09
0.6584461.8362225.242350e-09
0.6615391.8358485.266975e-09
0.6646461.8354775.291715e-09
0.6677681.8351115.316571e-09
0.6709051.8347485.341544e-09
0.6740561.8343895.366634e-09
0.6772221.8340345.391842e-09
0.6804031.8336825.417169e-09
0.6835991.8333345.442614e-09
0.686811.832995.468179e-09
0.6900361.8326485.493864e-09
0.6932771.8323115.519670e-09
0.6965331.8319765.545597e-09
0.6998051.8316455.571646e-09
0.71.8316255.573200e-09
0.7030921.8313175.597817e-09
0.7063941.8309925.624111e-09
0.7097121.8306715.650528e-09
0.7130461.8303535.677070e-09
0.7163951.8300385.703736e-09
0.719761.8297255.730527e-09
0.723141.8294165.757445e-09
0.7265371.829115.784488e-09
0.729951.8288075.811659e-09
0.7333781.8285065.838957e-09
0.7368231.8282095.866384e-09
0.7402841.8279145.893939e-09
0.7437611.8276225.921624e-09
0.7472541.8273335.949439e-09
0.7507641.8270475.977385e-09
0.7542911.8267636.005462e-09
0.7578331.8264826.033670e-09
0.7613931.8262036.062011e-09
0.7649691.8259276.090486e-09
0.7685621.8256546.119094e-09
0.7721721.8253836.147836e-09
0.7757991.8251156.176714e-09
0.7794431.8248496.205727e-09
0.7831041.8245856.234876e-09
0.7867821.8243246.264162e-09
0.7904781.8240656.293586e-09
0.7941911.8238086.323148e-09
0.7979211.8235536.352849e-09
0.81.8234136.369400e-09
0.8016691.8233016.382689e-09
0.8054351.8230516.412670e-09
0.8092181.8228046.442791e-09
0.8130191.8225586.473054e-09
0.8168371.8223146.503459e-09
0.8206741.8220736.534007e-09
0.8245291.8218346.564698e-09
0.8284021.8215966.595533e-09
0.8322931.8213616.626514e-09
0.8362021.8211286.657639e-09
0.840131.8208966.688911e-09
0.8440761.8206676.720330e-09
0.848041.8204396.751897e-09
0.8520241.8202136.783611e-09
0.8560251.819996.815475e-09
0.8600461.8197686.847488e-09
0.8640861.8195476.879652e-09
0.8681451.8193296.911967e-09
0.8722221.8191126.944433e-09
0.8763191.8188976.977052e-09
0.8804351.8186847.009825e-09
0.8845711.8184727.042751e-09
0.8887251.8182627.075832e-09
0.89291.8180547.109068e-09
0.8970941.8178477.142460e-09
0.91.8177057.165600e-09
0.9013071.8176427.176008e-09
0.9055411.8174387.209711e-09
0.9097941.8172367.243571e-09
0.9140671.8170367.277591e-09
0.9183611.8168367.311771e-09
0.9226741.8166397.346111e-09
0.9270081.8164437.380613e-09
0.9313621.8162487.415276e-09
0.9357371.8160547.450102e-09
0.9401321.8158627.485092e-09
0.9445481.8156727.520247e-09
0.9489851.8154837.555566e-09
0.9534421.8152957.591051e-09
0.957921.8151087.626703e-09
0.962421.8149237.662523e-09
0.966941.8147387.698511e-09
0.9714821.8145557.734667e-09
0.9760451.8143747.770994e-09
0.9806291.8141937.807491e-09
0.9852351.8140147.844160e-09
0.9898631.8138367.881000e-09
0.9945131.8136597.918014e-09
0.9991841.8134837.955202e-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
1.205171.8071749.595284e-09
1.210831.8070299.640341e-09
1.216521.8068869.685609e-09
1.222241.8067429.731090e-09
1.227981.8065999.776784e-09
1.233741.8064579.822693e-09
1.239541.8063159.868818e-09
1.245361.8061739.915159e-09
1.251211.8060329.961718e-09
1.257091.8058911.000850e-08
1.262991.805751.005549e-08
1.268931.805611.010271e-08
1.274891.805471.015015e-08
1.280871.805331.019781e-08
1.286891.8051911.024570e-08
1.292931.8050521.029381e-08
1.299011.8049131.034215e-08
1.305111.8047741.039071e-08
1.311241.8046361.043951e-08
1.31741.8044981.048853e-08
1.323591.804361.053778e-08
1.32981.8042221.058726e-08
1.336051.8040841.063698e-08
1.342321.8039471.068693e-08
1.348631.803811.073711e-08
1.354961.8036721.078753e-08
1.361331.8035351.083819e-08
1.367721.8033991.088908e-08
1.374151.8032621.094022e-08
1.38061.8031251.099159e-08
1.387091.8029881.104321e-08
1.39361.8028521.109506e-08
1.41.8027181.114600e-08
1.400151.8027151.114717e-08
1.406721.8025791.119955e-08
1.413331.8024421.125217e-08
1.419971.8023061.130505e-08
1.426641.8021691.135817e-08
1.433341.8020331.141155e-08
1.440071.8018961.146517e-08
1.446841.801761.151905e-08
1.453631.8016231.157317e-08
1.460461.8014861.162756e-08
1.467321.8013491.168220e-08
1.474211.8012121.173709e-08
1.481141.8010751.179224e-08
1.488091.8009381.184765e-08
1.495081.8008011.190333e-08
1.50211.8006641.195926e-08
1.509161.8005261.201546e-08
1.516251.8003881.207192e-08
1.523371.800251.212864e-08
1.530531.8001121.218563e-08
1.537711.7999741.224289e-08
1.544941.7998351.230042e-08
1.552191.7996961.235822e-08
1.559481.7995571.241629e-08
1.566811.7994181.247463e-08
1.574171.7992781.253325e-08
1.581561.7991381.259214e-08
1.588991.7989981.265131e-08
1.596451.7988571.271076e-08
1.61.7987911.273900e-08
1.603951.7987161.419103e-08
1.611491.7985751.695834e-08
1.619061.7984331.973865e-08
1.626661.7982912.253202e-08
1.63431.7981492.533851e-08
1.641981.7980062.815818e-08
1.649691.7978633.099109e-08
1.657441.7977193.383732e-08
1.665221.7975753.669691e-08
1.673051.797433.956993e-08
1.68091.7972854.245645e-08
1.68881.797144.535652e-08
1.696731.7969944.827022e-08
1.70471.7968475.119760e-08
1.712711.79675.413873e-08
1.720751.7965525.709368e-08
1.728831.7964046.006250e-08
1.736951.7962556.304528e-08
1.745111.7961066.604206e-08
1.753311.7959566.905291e-08
1.761551.7958057.207791e-08
1.769821.7956547.511712e-08
1.778131.7955027.817060e-08
1.786481.795358.123843e-08
1.794881.7951978.432066e-08
1.81.7951038.620300e-08
1.803311.7950438.875422e-08
1.811781.7948889.529051e-08
1.820291.7947331.018575e-07
1.828841.7945771.084553e-07
1.837431.794421.150842e-07
1.846061.7942621.217441e-07
1.854731.7941041.284354e-07
1.863441.7939451.351580e-07
1.872191.7937851.419123e-07
1.880991.7936241.486983e-07
1.889821.7934621.555161e-07
1.89871.79331.623660e-07
1.907621.7931361.692480e-07
1.916581.7929721.761624e-07
1.925581.7928071.831093e-07
1.934621.7926411.900887e-07
1.943711.7924741.971010e-07
1.952841.7923052.041462e-07
1.962011.7921362.112245e-07
1.971231.7919662.183360e-07
1.980491.7917952.254810e-07
1.989791.7916232.326595e-07
1.999131.791452.398717e-07
21.7914342.405400e-07
2.008521.7912762.599706e-07
2.017961.7911012.814761e-07
2.027441.7909243.030825e-07
2.036961.7907473.247904e-07
2.046531.7905683.466003e-07
2.056141.7903893.685126e-07
2.06581.7902083.905279e-07
2.07551.7900264.126465e-07
2.085251.7898424.348691e-07
2.095041.7896584.571960e-07
2.104881.7894724.796278e-07
2.114771.7892855.021649e-07
2.12471.7890975.248079e-07
2.134681.7889075.475573e-07
2.144711.7887165.704135e-07
2.154781.7885245.933771e-07
2.16491.788336.164486e-07
2.175071.7881356.396284e-07
2.185291.7879396.629170e-07
2.195551.7877416.863151e-07
2.21.7876556.964500e-07
2.205871.7875427.196976e-07
2.216231.7873417.607556e-07
2.226641.7871398.020065e-07
2.23711.7869358.434511e-07
2.24761.786738.850904e-07
2.258161.7865239.269252e-07
2.268771.7863149.689566e-07
2.279421.7861051.011185e-06
2.290131.7858931.053612e-06
2.300891.785681.096239e-06
2.311691.7854651.139065e-06
2.322551.7852481.182093e-06
2.333461.785031.225323e-06
2.344421.784811.268756e-06
2.355431.7845881.312393e-06
2.36651.7843651.356235e-06
2.377611.784141.400283e-06
2.388781.7839131.444537e-06
2.41.7836841.489000e-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
—