Optical constants

Refractive index of H-TF3L (CDGM)

H-TF3L: n,k 0.365–2.325 µm

Data
formula 2 + tabulated k
Range
0.365–2.325 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.325 µm
Refractive index n
1.6134
Extinction coefficient k
3.75584e-08
Permittivity ε1
2.60305
Permittivity ε2
1.21193e-07
Absorption coefficient α
0.00803221 cm⁻¹
Penetration depth δ = λ/(2πk)
2.48997e+09 nm
Abbe number Vd
44.107
Chromatic dispersion dn/dλ
-0.0711264 µm⁻¹
Group index ng
1.65519
Group velocity dispersion
131.028 fs²/mm
Dispersion parameter D
-714.828 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

# H-TF3L (CDGM): H-TF3L
cdgm_h_tf3l = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-TF3L", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_tf3l.range_nm)  # (365, 2325) nm
eps = cdgm_h_tf3l.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=1.35609817λ2λ2−0.00823370212+0.192047799λ2λ2−0.0410079104+1.325836λ2λ2−111.798686

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.35609817
C30.00823370212
C40.192047799
C50.0410079104
C61.325836
C7111.798686

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 4.34e-06 1.58e-08 -2.17e-11 6.07e-07 6.66e-10 0.227
nd
1.613400
Vd
44.107022
glass code
613441
glass status
standard
density
value: 2800
thermal expansion
value: 6.3e-06, temperature range: 243 343; value: 7.7e-06, temperature range: 293 573
dPgF
-0.005
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 3.01e-06 K⁻¹ at 633 nm, dn/dT = 2.27e-06 K⁻¹ at 1310 nm, dn/dT = 2.21e-06 K⁻¹ at 1550 nm

References

Cite

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com); See also CDGM optical 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
H-TF3L (CDGM), H-TF3L: n and k versus wavelength
λ (µm)nk
0.3651.6496362.404450e-07
0.3666981.649022.195985e-07
0.3684031.6484141.986550e-07
0.371.6478561.790500e-07
0.3701171.6478161.783997e-07
0.3718381.6472251.688263e-07
0.3735681.6466431.592083e-07
0.3753061.6460691.495456e-07
0.3770511.6455021.398379e-07
0.3788051.6449431.300851e-07
0.381.6445681.234400e-07
0.3805671.6443911.218008e-07
0.3823371.6438471.166835e-07
0.3841161.6433091.115424e-07
0.3859021.6427791.063774e-07
0.3876971.6422561.011884e-07
0.38951.6417399.597517e-08
0.391.6415989.453100e-08
0.3913121.6412299.184571e-08
0.3931321.6407268.812083e-08
0.3949611.6402298.437863e-08
0.3967981.6397388.061901e-08
0.3986441.6392547.684191e-08
0.41.6389037.406600e-08
0.4004981.6387757.373354e-08
0.4023611.6383037.248944e-08
0.4042321.6378367.123955e-08
0.4061121.6373766.998385e-08
0.4080011.6369216.872230e-08
0.4098991.6364716.745489e-08
0.4118061.6360276.618159e-08
0.4137211.6355896.490236e-08
0.4156451.6351566.361718e-08
0.4175791.6347286.232602e-08
0.4195211.6343056.102886e-08
0.421.6342026.070900e-08
0.4214721.6338876.039737e-08
0.4234331.6334755.998245e-08
0.4254021.6330675.956560e-08
0.4273811.6326645.914681e-08
0.4293691.6322665.872607e-08
0.4313661.6318725.830338e-08
0.4333721.6314845.787872e-08
0.4353881.6310995.745208e-08
0.4374131.630725.702346e-08
0.4394481.6303445.659285e-08
0.441.6302435.647600e-08
0.4414921.6299735.611301e-08
0.4435451.6296065.561339e-08
0.4456091.6292445.511144e-08
0.4476811.6288855.460716e-08
0.4497641.6285315.410054e-08
0.4518561.6281815.359155e-08
0.4539571.6278345.308020e-08
0.4560691.6274925.256647e-08
0.458191.6271535.205035e-08
0.461.6268695.161000e-08
0.4603211.6268195.152171e-08
0.4624621.6264885.093334e-08
0.4646131.626165.034223e-08
0.4667751.6258364.974836e-08
0.4689461.6255164.915174e-08
0.4711271.62524.855234e-08
0.4733181.6248864.795015e-08
0.475521.6245774.734516e-08
0.4777321.624274.673736e-08
0.4799541.6239674.612673e-08
0.481.6239614.611400e-08
0.4821861.6236674.588402e-08
0.4844291.6233714.564808e-08
0.4866821.6230784.541104e-08
0.4889461.6227874.517290e-08
0.491221.62254.493364e-08
0.4935051.6222164.469328e-08
0.49581.6219354.445180e-08
0.4981071.6216574.420919e-08
0.51.6214324.401000e-08
0.5004231.6213824.393502e-08
0.5027511.621114.352280e-08
0.5050891.620844.310865e-08
0.5074391.6205744.269259e-08
0.5097991.620314.227458e-08
0.512171.6200494.185464e-08
0.5145531.619794.143274e-08
0.5169461.6195354.100887e-08
0.519351.6192824.058304e-08
0.5217661.6190314.015522e-08
0.5241931.6187833.972542e-08
0.5266311.6185383.929361e-08
0.5290811.6182953.885980e-08
0.5315421.6180543.842397e-08
0.5340141.6178163.798611e-08
0.5364981.617583.754622e-08
0.5389931.6173473.710428e-08
0.54151.6171163.666028e-08
0.5440191.6168873.621422e-08
0.5465491.6166613.576608e-08
0.5490921.6164373.531586e-08
0.551.6163573.515500e-08
0.5516461.6162143.526019e-08
0.5542121.6159953.542420e-08
0.5567891.6157773.558898e-08
0.5593791.6155613.575452e-08
0.5619811.6153483.592083e-08
0.5645951.6151363.608791e-08
0.5672211.6149273.625578e-08
0.5698591.6147193.642442e-08
0.572511.6145143.659384e-08
0.5751731.614313.676406e-08
0.5778481.6141093.693507e-08
0.5805361.6139093.710687e-08
0.5832361.6137113.727947e-08
0.5859491.6135153.745287e-08
0.5886751.6133213.762708e-08
0.5914131.6131293.780210e-08
0.5941641.6129383.797794e-08
0.5969271.6127493.815459e-08
0.5997041.6125623.833206e-08
0.61.6125433.835100e-08
0.6024931.6123773.851036e-08
0.6052961.6121933.868949e-08
0.6081111.6120113.886946e-08
0.610941.6118313.905025e-08
0.6137811.6116523.923190e-08
0.6166361.6114753.941438e-08
0.6195041.6112993.959771e-08
0.6223861.6111253.978190e-08
0.6252811.6109533.996694e-08
0.6281891.6107824.015285e-08
0.6311111.6106134.033962e-08
0.6340471.6104454.052725e-08
0.6369961.6102784.071577e-08
0.6399591.6101134.090515e-08
0.6429351.6099494.109542e-08
0.6459261.6097874.128657e-08
0.648931.6096264.147862e-08
0.651.6095694.154700e-08
0.6519491.6094674.123430e-08
0.6549811.6093084.074765e-08
0.6580281.6091524.025875e-08
0.6610881.6089963.976756e-08
0.6641631.6088423.927410e-08
0.6672521.6086893.877834e-08
0.6703561.6085373.828027e-08
0.6734741.6083873.777988e-08
0.6766071.6082373.727717e-08
0.6797541.6080893.677212e-08
0.6829151.6079423.626472e-08
0.6860921.6077973.575496e-08
0.6892831.6076523.524283e-08
0.6924891.6075093.472832e-08
0.695711.6073663.421142e-08
0.6989461.6072253.369211e-08
0.71.607183.352300e-08
0.7021971.6070853.334706e-08
0.7054631.6069463.308554e-08
0.7087451.6068083.282281e-08
0.7120411.6066713.255885e-08
0.7153531.6065363.229366e-08
0.7186811.6064013.202724e-08
0.7220231.6062673.175958e-08
0.7253821.6061343.149068e-08
0.7287561.6060023.122052e-08
0.7321461.6058713.094911e-08
0.7355511.6057413.067643e-08
0.7389721.6056123.040249e-08
0.7424091.6054843.012727e-08
0.7458631.6053572.985078e-08
0.7493321.6052312.957299e-08
0.7528171.6051052.929392e-08
0.7563191.6049812.901355e-08
0.7598371.6048572.873187e-08
0.7633711.6047342.844888e-08
0.7669221.6046122.816458e-08
0.7704891.6044912.787895e-08
0.7740731.6043712.759200e-08
0.7776731.6042512.730371e-08
0.781291.6041322.701408e-08
0.7849241.6040142.672310e-08
0.7885751.6038972.643077e-08
0.7922431.603782.613708e-08
0.7959281.6036652.584202e-08
0.799631.6035492.554559e-08
0.81.6035382.551600e-08
0.803351.6034352.562286e-08
0.8070861.6033212.574206e-08
0.810841.6032082.586181e-08
0.8146121.6030962.598212e-08
0.8184011.6029842.610299e-08
0.8222081.6028732.622442e-08
0.8260321.6027632.634642e-08
0.8298741.6026532.646898e-08
0.8337341.6025442.659212e-08
0.8376121.6024352.671583e-08
0.8415081.6023272.684011e-08
0.8454221.602222.696497e-08
0.8493551.6021132.709041e-08
0.851.6020962.711100e-08
0.8533051.6020072.674128e-08
0.8572741.6019012.629730e-08
0.8612621.6017962.585127e-08
0.8652681.6016912.540315e-08
0.8692921.6015872.495296e-08
0.8733361.6014842.450067e-08
0.8773981.6013812.404627e-08
0.8814791.6012782.358976e-08
0.8855791.6011762.313113e-08
0.8896981.6010742.267037e-08
0.8938361.6009732.220746e-08
0.8979941.6008722.174240e-08
0.91.6008242.151800e-08
0.9021711.6007722.124087e-08
0.9063671.6006722.070517e-08
0.9105831.6005732.016698e-08
0.9148181.6004741.962629e-08
0.9190731.6003751.908308e-08
0.9233481.6002771.853735e-08
0.9276431.6001791.798907e-08
0.9319581.6000811.743825e-08
0.9362931.5999841.688486e-08
0.9406481.5998881.632890e-08
0.9450231.5997911.577035e-08
0.9494191.5996951.520921e-08
0.951.5996821.513500e-08
0.9538351.5995991.519605e-08
0.9582711.5995041.526668e-08
0.9627291.5994091.533764e-08
0.9672071.5993141.540893e-08
0.9717051.5992191.548055e-08
0.9762251.5991251.555250e-08
0.9807661.5990311.562479e-08
0.9853281.5989371.569742e-08
0.9899111.5988441.577038e-08
0.9945151.598751.584368e-08
0.9991411.5986571.591732e-08
11.598641.593100e-08
1.003791.5985651.599136e-08
1.008461.5984721.606575e-08
1.013151.598381.614049e-08
1.017861.5982881.621558e-08
1.022591.5981961.629101e-08
1.027351.5981041.636680e-08
1.032131.5980121.644293e-08
1.036931.5979211.651943e-08
1.041751.5978291.659628e-08
1.04661.5977381.667348e-08
1.051471.5976471.675105e-08
1.056361.5975561.682897e-08
1.061.5974891.688700e-08
1.061271.5974661.690726e-08
1.066211.5973751.698593e-08
1.071171.5972841.706496e-08
1.076151.5971941.714435e-08
1.081151.5971041.722412e-08
1.086181.5970131.730426e-08
1.091241.5969231.738477e-08
1.096311.5968331.746565e-08
1.101411.5967431.754691e-08
1.106531.5966531.762855e-08
1.111681.5965631.771057e-08
1.116851.5964731.779297e-08
1.122051.5963831.787576e-08
1.127271.5962931.795892e-08
1.132511.5962031.804248e-08
1.137781.5961131.812642e-08
1.143071.5960231.821076e-08
1.148391.5959331.829549e-08
1.153731.5958431.838061e-08
1.159091.5957531.846612e-08
1.164481.5956631.855204e-08
1.16991.5955731.863835e-08
1.175341.5954831.872507e-08
1.180811.5953921.881219e-08
1.18631.5953021.889971e-08
1.191821.5952121.898764e-08
1.197361.5951211.907598e-08
1.21.5950781.911800e-08
1.202931.595032.213809e-08
1.208531.594942.790012e-08
1.214151.5948493.368896e-08
1.21981.5947583.950472e-08
1.225471.5946664.534752e-08
1.231171.5945755.121751e-08
1.23691.5944845.711480e-08
1.242651.5943926.303952e-08
1.248431.59436.899180e-08
1.254241.5942087.497176e-08
1.260071.5941168.097954e-08
1.265931.5940238.701526e-08
1.271821.5939319.307906e-08
1.277741.5938389.917106e-08
1.283681.5937451.052914e-07
1.289651.5936521.114402e-07
1.295651.5935581.176176e-07
1.301671.5934641.238237e-07
1.307731.593371.300587e-07
1.313811.5932761.363228e-07
1.319921.5931811.426159e-07
1.326061.5930861.489383e-07
1.332231.5929911.552901e-07
1.338431.5928961.616715e-07
1.344651.59281.680825e-07
1.350911.5927041.745234e-07
1.357191.5926071.809942e-07
1.36351.592511.874952e-07
1.369851.5924131.940263e-07
1.376221.5923162.005879e-07
1.382621.5922182.071799e-07
1.389051.592122.138026e-07
1.395511.5920212.204562e-07
1.41.5919522.250800e-07
1.4021.5919222.237229e-07
1.408521.5918222.193003e-07
1.415071.5917222.148570e-07
1.421661.5916222.103931e-07
1.428271.5915212.059085e-07
1.434911.591422.014030e-07
1.441591.5913181.968765e-07
1.448291.5912161.923290e-07
1.455031.5911141.877603e-07
1.46181.591011.831704e-07
1.468591.5909071.785591e-07
1.475431.5908031.739263e-07
1.482291.5906981.692721e-07
1.489181.5905931.645961e-07
1.496111.5904871.598985e-07
1.503071.5903811.551789e-07
1.510061.5902741.504375e-07
1.517081.5901671.456739e-07
1.524141.5900591.408882e-07
1.531231.589951.360803e-07
1.538351.5898411.312500e-07
1.545511.5897321.263972e-07
1.55271.5896211.215218e-07
1.559921.589511.166238e-07
1.567171.5893991.117030e-07
1.574461.5892861.067593e-07
1.581791.5891731.017926e-07
1.589141.589069.680282e-08
1.596541.5889459.178982e-08
1.61.5888928.944000e-08
1.603961.588839.138080e-08
1.611421.5887159.503610e-08
1.618921.5885989.870840e-08
1.626451.5884811.023978e-07
1.634011.5883631.061043e-07
1.641611.5882451.098281e-07
1.649251.5881251.135692e-07
1.656921.5880051.173277e-07
1.664631.5878841.211037e-07
1.672371.5877621.248972e-07
1.680151.587641.287084e-07
1.687961.5875161.325374e-07
1.695811.5873921.363841e-07
1.70371.5872671.402487e-07
1.711631.5871411.441313e-07
1.719591.5870141.480320e-07
1.727591.5868861.519508e-07
1.735621.5867581.558878e-07
1.743691.5866281.598431e-07
1.751811.5864981.638169e-07
1.759951.5863661.678091e-07
1.768141.5862341.718199e-07
1.776361.58611.758493e-07
1.784631.5859661.798975e-07
1.792931.5858311.839646e-07
1.81.5857151.874300e-07
1.801271.5856941.890016e-07
1.809641.5855571.993991e-07
1.818061.5854192.098449e-07
1.826521.5852792.203393e-07
1.835011.5851392.308825e-07
1.843551.5849972.414748e-07
1.852121.5848542.521163e-07
1.860741.5847112.628073e-07
1.869391.5845662.735481e-07
1.878091.584422.843388e-07
1.886821.5842722.951797e-07
1.89561.5841243.060710e-07
1.904421.5839743.170130e-07
1.913281.5838243.280058e-07
1.922181.5836723.390499e-07
1.931121.5835183.501452e-07
1.94011.5833643.612922e-07
1.949121.5832083.724910e-07
1.958191.5830513.837420e-07
1.96731.5828933.950452e-07
1.976451.5827334.064010e-07
1.985641.5825724.178097e-07
1.994881.582414.292714e-07
21.582324.356300e-07
2.004161.5822464.730748e-07
2.013481.5820815.570832e-07
2.022841.5819156.414823e-07
2.032251.5817477.262739e-07
2.04171.5815788.114600e-07
2.05121.5814078.970423e-07
2.060741.5812359.830227e-07
2.070331.5810611.069403e-06
2.079961.5808861.156185e-06
2.089631.5807091.243371e-06
2.099351.580531.330962e-06
2.109121.5803511.418961e-06
2.118931.5801691.507369e-06
2.128781.5799861.596188e-06
2.138681.5798011.685420e-06
2.148631.5796151.775068e-06
2.158621.5794271.865132e-06
2.168671.5792371.955615e-06
2.178751.5790452.046519e-06
2.188891.5788522.137846e-06
2.199071.5786572.229598e-06
2.21.5786392.238000e-06
2.20931.5784612.343234e-06
2.219571.5782622.459560e-06
2.22991.5780622.576427e-06
2.240271.5778592.693838e-06
2.250691.5776552.811795e-06
2.261161.5774492.930301e-06
2.271671.5772413.049357e-06
2.282241.5770323.168968e-06
2.292861.576823.289135e-06
2.303521.5766063.409861e-06
2.314241.576393.531148e-06
2.3251.5761723.653000e-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
—