Optical constants

Refractive index of H-BAF6 (CDGM)

H-BAF6: 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
1.60801
Extinction coefficient k
3.28468e-08
Permittivity ε1
2.58569
Permittivity ε2
1.05636e-07
Absorption coefficient α
0.0070246 cm⁻¹
Penetration depth δ = λ/(2πk)
2.84714e+09 nm
Abbe number Vd
46.202
Chromatic dispersion dn/dλ
-0.0672132 µm⁻¹
Group index ng
1.6475
Group velocity dispersion
125.434 fs²/mm
Dispersion parameter D
-684.309 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-BAF6 (CDGM): H-BAF6
cdgm_h_baf6 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-BAF6", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_baf6.range_nm)  # (365, 2325) nm
eps = cdgm_h_baf6.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=1.06475107λ2λ2−115.35395+1.38638809λ2λ2−0.00853300947+0.146161462λ2λ2−0.0437434703

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.06475107
C3115.35395
C41.38638809
C50.00853300947
C60.146161462
C70.0437434703

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -3.02e-06 1.55e-08 -1.32e-10 6.09e-07 9.44e-10 0.233
nd
1.608010
Vd
46.202418
glass code
608462
density
value: 3110
thermal expansion
value: 8.2e-06, temperature range: 243 343; value: 9.4e-06, temperature range: 293 573
dPgF
0.001
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -6.20e-07 K⁻¹ at 633 nm, dn/dT = -1.27e-06 K⁻¹ at 1310 nm, dn/dT = -1.32e-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-BAF6 (CDGM), H-BAF6: n and k versus wavelength
λ (µm)nk
0.3651.6424511.154265e-06
0.3666981.6418649.804389e-07
0.3684031.6412868.058044e-07
0.371.6407556.423300e-07
0.3701171.6407166.383096e-07
0.3718381.6401545.791197e-07
0.3735681.6395995.196546e-07
0.3753061.6390524.599128e-07
0.3770511.6385123.998932e-07
0.3788051.6379793.395944e-07
0.381.6376222.985100e-07
0.3805671.6374542.907958e-07
0.3823371.6369352.667130e-07
0.3841161.6364232.425182e-07
0.3859021.6359192.182109e-07
0.3876971.635421.937905e-07
0.38951.6349281.692565e-07
0.391.6347941.624600e-07
0.3913121.6344431.538648e-07
0.3931321.6339641.419421e-07
0.3949611.633491.299640e-07
0.3967981.6330231.179301e-07
0.3986441.6325621.058402e-07
0.41.6322289.695500e-08
0.4004981.6321079.588356e-08
0.4023611.6316579.187406e-08
0.4042321.6312138.784591e-08
0.4061121.6307758.379902e-08
0.4080011.6303427.973331e-08
0.4098991.6299147.564869e-08
0.4118061.6294927.154507e-08
0.4137211.6290756.742237e-08
0.4156451.6286636.328048e-08
0.4175791.6282565.911934e-08
0.4195211.6278545.493883e-08
0.421.6277565.390800e-08
0.4214721.6274565.331234e-08
0.4234331.6270645.251926e-08
0.4254021.6266765.172249e-08
0.4273811.6262935.092201e-08
0.4293691.6259145.011781e-08
0.4313661.625544.930987e-08
0.4333721.6251714.849817e-08
0.4353881.6248054.768269e-08
0.4374131.6244444.686342e-08
0.4394481.6240874.604035e-08
0.441.6239914.581700e-08
0.4414921.6237344.486791e-08
0.4435451.6233864.356156e-08
0.4456091.6230414.224913e-08
0.4476811.62274.093060e-08
0.4497641.6223633.960594e-08
0.4518561.6220313.827511e-08
0.4539571.6217013.693810e-08
0.4560691.6213763.559486e-08
0.458191.6210543.424538e-08
0.461.6207843.309400e-08
0.4603211.6207363.311712e-08
0.4624621.6204213.327117e-08
0.4646131.620113.342594e-08
0.4667751.6198033.358143e-08
0.4689461.6194993.373764e-08
0.4711271.6191983.389458e-08
0.4733181.61893.405225e-08
0.475521.6186063.421065e-08
0.4777321.6183153.436979e-08
0.4799541.6180273.452967e-08
0.481.6180213.453300e-08
0.4821861.6177423.425165e-08
0.4844291.6174613.396300e-08
0.4866821.6171823.367301e-08
0.4889461.6169073.338167e-08
0.491221.6166343.308897e-08
0.4935051.6163643.279491e-08
0.49581.6160983.249949e-08
0.4981071.6158343.220269e-08
0.51.615623.195900e-08
0.5004231.6155733.194872e-08
0.5027511.6153143.189221e-08
0.5050891.6150583.183543e-08
0.5074391.6148053.177839e-08
0.5097991.6145553.172108e-08
0.512171.6143073.166350e-08
0.5145531.6140623.160566e-08
0.5169461.613823.154755e-08
0.519351.613583.148917e-08
0.5217661.6133423.143052e-08
0.5241931.6131073.137159e-08
0.5266311.6128743.131239e-08
0.5290811.6126443.125292e-08
0.5315421.6124163.119317e-08
0.5340141.612193.113314e-08
0.5364981.6119673.107283e-08
0.5389931.6117463.101224e-08
0.54151.6115273.095137e-08
0.5440191.611313.089022e-08
0.5465491.6110953.082878e-08
0.5490921.6108833.076705e-08
0.551.6108083.074500e-08
0.5516461.6106733.083699e-08
0.5542121.6104643.098043e-08
0.5567891.6102583.112453e-08
0.5593791.6100543.126930e-08
0.5619811.6098523.141474e-08
0.5645951.6096523.156086e-08
0.5672211.6094543.170766e-08
0.5698591.6092573.185514e-08
0.572511.6090633.200331e-08
0.5751731.6088713.215217e-08
0.5778481.608683.230172e-08
0.5805361.6084913.245197e-08
0.5832361.6083043.260291e-08
0.5859491.6081193.275456e-08
0.5886751.6079353.290691e-08
0.5914131.6077543.305997e-08
0.5941641.6075743.321375e-08
0.5969271.6073953.336823e-08
0.5997041.6072193.352344e-08
0.61.60723.354000e-08
0.6024931.6070443.393926e-08
0.6052961.606873.438803e-08
0.6081111.6066993.483890e-08
0.610941.6065283.529186e-08
0.6137811.606363.574692e-08
0.6166361.6061933.620411e-08
0.6195041.6060273.666342e-08
0.6223861.6058633.712486e-08
0.6252811.6057013.758846e-08
0.6281891.605543.805421e-08
0.6311111.605383.852212e-08
0.6340471.6052223.899221e-08
0.6369961.6050653.946449e-08
0.6399591.6049093.993897e-08
0.6429351.6047554.041565e-08
0.6459261.6046034.089455e-08
0.648931.6044514.137568e-08
0.651.6043984.154700e-08
0.6519491.6043014.167155e-08
0.6549811.6041534.186538e-08
0.6580281.6040054.206012e-08
0.6610881.6038594.225576e-08
0.6641631.6037144.245231e-08
0.6672521.6035714.264977e-08
0.6703561.6034284.284816e-08
0.6734741.6032874.304746e-08
0.6766071.6031474.324769e-08
0.6797541.6030084.344886e-08
0.6829151.6028714.365096e-08
0.6860921.6027344.385400e-08
0.6892831.6025994.405798e-08
0.6924891.6024644.426291e-08
0.695711.6023314.446880e-08
0.6989461.6021994.467564e-08
0.71.6021574.474300e-08
0.7021971.6020684.446105e-08
0.7054631.6019384.404193e-08
0.7087451.6018094.362087e-08
0.7120411.6016814.319785e-08
0.7153531.6015544.277286e-08
0.7186811.6014294.234590e-08
0.7220231.6013044.191695e-08
0.7253821.601184.148600e-08
0.7287561.6010574.105305e-08
0.7321461.6009354.061809e-08
0.7355511.6008144.018110e-08
0.7389721.6006943.974208e-08
0.7424091.6005743.930102e-08
0.7458631.6004563.885790e-08
0.7493321.6003393.841273e-08
0.7528171.6002223.796548e-08
0.7563191.6001063.751616e-08
0.7598371.5999923.706474e-08
0.7633711.5998783.661123e-08
0.7669221.5997643.615560e-08
0.7704891.5996523.569786e-08
0.7740731.599543.523799e-08
0.7776731.599433.477597e-08
0.781291.599323.431181e-08
0.7849241.599213.384549e-08
0.7885751.5991023.337700e-08
0.7922431.5989943.290634e-08
0.7959281.5988873.243348e-08
0.799631.5987813.195842e-08
0.81.598773.191100e-08
0.803351.5986753.068035e-08
0.8070861.598572.930759e-08
0.810841.5984662.792843e-08
0.8146121.5983632.654286e-08
0.8184011.598262.515085e-08
0.8222081.5981582.375236e-08
0.8260321.5980562.234737e-08
0.8298741.5979552.093584e-08
0.8337341.5978551.951775e-08
0.8376121.5977551.809306e-08
0.8415081.5976561.666174e-08
0.8454221.5975581.522377e-08
0.8493551.597461.377910e-08
0.851.5974441.354200e-08
0.8533051.5973631.359462e-08
0.8572741.5972661.365781e-08
0.8612621.597171.372129e-08
0.8652681.5970741.378506e-08
0.8692921.5969791.384913e-08
0.8733361.5968851.391350e-08
0.8773981.5967911.397817e-08
0.8814791.5966971.404315e-08
0.8855791.5966041.410842e-08
0.8896981.5965121.417399e-08
0.8938361.596421.423988e-08
0.8979941.5963281.430606e-08
0.91.5962851.433800e-08
0.9021711.5962371.437260e-08
0.9063671.5961471.443949e-08
0.9105831.5960571.450669e-08
0.9148181.5959671.457420e-08
0.9190731.5958781.464203e-08
0.9233481.5957891.471017e-08
0.9276431.59571.477863e-08
0.9319581.5956121.484741e-08
0.9362931.5955251.491651e-08
0.9406481.5954381.498593e-08
0.9450231.5953511.505567e-08
0.9494191.5952641.512573e-08
0.951.5952531.513500e-08
0.9538351.5951781.519605e-08
0.9582711.5950921.526668e-08
0.9627291.5950071.533764e-08
0.9672071.5949221.540893e-08
0.9717051.5948371.548055e-08
0.9762251.5947531.555250e-08
0.9807661.5946691.562479e-08
0.9853281.5945851.569742e-08
0.9899111.5945011.577038e-08
0.9945151.5944181.584368e-08
0.9991411.5943351.591732e-08
11.594321.593100e-08
1.003791.5942531.599136e-08
1.008461.594171.606575e-08
1.013151.5940881.614049e-08
1.017861.5940061.621558e-08
1.022591.5939251.629101e-08
1.027351.5938431.636680e-08
1.032131.5937621.644293e-08
1.036931.5936811.651943e-08
1.041751.5936011.659628e-08
1.04661.593521.667348e-08
1.051471.593441.675105e-08
1.056361.593361.682897e-08
1.061.59331.688700e-08
1.061271.593281.690726e-08
1.066211.59321.698593e-08
1.071171.5931211.706496e-08
1.076151.5930411.714435e-08
1.081151.5929621.722412e-08
1.086181.5928831.730426e-08
1.091241.5928041.738477e-08
1.096311.5927251.746565e-08
1.101411.5926461.754691e-08
1.106531.5925681.762855e-08
1.111681.5924891.771057e-08
1.116851.5924111.779297e-08
1.122051.5923321.787576e-08
1.127271.5922541.795892e-08
1.132511.5921761.804248e-08
1.137781.5920981.812642e-08
1.143071.592021.821076e-08
1.148391.5919421.829549e-08
1.153731.5918641.838061e-08
1.159091.5917861.846612e-08
1.164481.5917081.855204e-08
1.16991.5916311.863835e-08
1.175341.5915531.872507e-08
1.180811.5914751.881219e-08
1.18631.5913971.889971e-08
1.191821.591321.898764e-08
1.197361.5912421.907598e-08
1.21.5912051.911800e-08
1.202931.5911642.064463e-08
1.208531.5910862.355729e-08
1.214151.5910082.648349e-08
1.21981.5909312.942331e-08
1.225471.5908533.237680e-08
1.231171.5907753.534402e-08
1.23691.5906973.832505e-08
1.242651.5906194.131995e-08
1.248431.5905414.432877e-08
1.254241.5904624.735159e-08
1.260071.5903845.038847e-08
1.265931.5903065.343947e-08
1.271821.5902275.650467e-08
1.277741.5901485.958412e-08
1.283681.590076.267790e-08
1.289651.5899916.578607e-08
1.295651.5899126.890869e-08
1.301671.5898337.204584e-08
1.307731.5897537.519758e-08
1.313811.5896747.836398e-08
1.319921.5895948.154511e-08
1.326061.5895158.474104e-08
1.332231.5894358.795183e-08
1.338431.5893549.117755e-08
1.344651.5892749.441828e-08
1.350911.5891949.767408e-08
1.357191.5891131.009450e-07
1.36351.5890321.042312e-07
1.369851.5889511.075326e-07
1.376221.5888691.108494e-07
1.382621.5887881.141817e-07
1.389051.5887061.175294e-07
1.395511.5886241.208927e-07
1.41.5885671.232300e-07
1.4021.5885411.231488e-07
1.408521.5884591.228840e-07
1.415071.5883761.226180e-07
1.421661.5882921.223508e-07
1.428271.5882091.220823e-07
1.434911.5881251.218126e-07
1.441591.5880411.215416e-07
1.448291.5879571.212694e-07
1.455031.5878721.209959e-07
1.46181.5877871.207211e-07
1.468591.5877011.204451e-07
1.475431.5876151.201677e-07
1.482291.5875291.198891e-07
1.489181.5874431.196092e-07
1.496111.5873561.193280e-07
1.503071.5872691.190454e-07
1.510061.5871811.187616e-07
1.517081.5870931.184764e-07
1.524141.5870051.181899e-07
1.531231.5869161.179021e-07
1.538351.5868261.176129e-07
1.545511.5867371.173224e-07
1.55271.5866461.170306e-07
1.559921.5865561.167373e-07
1.567171.5864651.164428e-07
1.574461.5863731.161468e-07
1.581791.5862811.158495e-07
1.589141.5861891.155508e-07
1.596541.5860961.152507e-07
1.61.5860521.151100e-07
1.603961.5860021.208871e-07
1.611421.5859081.317675e-07
1.618921.5858141.426986e-07
1.626451.5857191.536805e-07
1.634011.5856231.647135e-07
1.641611.5855271.757979e-07
1.649251.585431.869337e-07
1.656921.5853331.981214e-07
1.664631.5852352.093611e-07
1.672371.5851372.206531e-07
1.680151.5850372.319976e-07
1.687961.5849382.433949e-07
1.695811.5848382.548452e-07
1.70371.5847372.663488e-07
1.711631.5846352.779058e-07
1.719591.5845332.895166e-07
1.727591.584433.011815e-07
1.735621.5843273.129006e-07
1.743691.5842223.246741e-07
1.751811.5841183.365025e-07
1.759951.5840123.483859e-07
1.768141.5839063.603245e-07
1.776361.5837993.723187e-07
1.784631.5836913.843686e-07
1.792931.5835833.964747e-07
1.81.583494.067900e-07
1.801271.5834734.097022e-07
1.809641.5833634.289685e-07
1.818061.5832534.483244e-07
1.826521.5831414.677704e-07
1.835011.5830294.873067e-07
1.843551.5829165.069340e-07
1.852121.5828025.266525e-07
1.860741.5826875.464628e-07
1.869391.5825715.663652e-07
1.878091.5824555.863602e-07
1.886821.5823376.064481e-07
1.89561.5822196.266296e-07
1.904421.58216.469048e-07
1.913281.581986.672744e-07
1.922181.5818596.877388e-07
1.931121.5817377.082983e-07
1.94011.5816147.289535e-07
1.949121.581497.497047e-07
1.958191.5813667.705524e-07
1.96731.581247.914972e-07
1.976451.5811138.125393e-07
1.985641.5809868.336793e-07
1.994881.5808578.549177e-07
21.5807858.667000e-07
2.004161.5807278.964316e-07
2.013481.5805969.631350e-07
2.022841.5804641.030149e-06
2.032251.5803311.097474e-06
2.04171.5801971.165113e-06
2.05121.5800621.233066e-06
2.060741.5799261.301335e-06
2.070331.5797891.369922e-06
2.079961.579651.438828e-06
2.089631.579511.508054e-06
2.099351.5793691.577603e-06
2.109121.5792271.647474e-06
2.118931.5790841.717671e-06
2.128781.578941.788195e-06
2.138681.5787941.859046e-06
2.148631.5786471.930227e-06
2.158621.5784992.001739e-06
2.168671.5783492.073584e-06
2.178751.5781982.145762e-06
2.188891.5780462.218277e-06
2.199071.5778922.291129e-06
2.21.5778782.297800e-06
2.20931.5777382.361768e-06
2.219571.5775812.432478e-06
2.22991.5774242.503517e-06
2.240271.5772652.574887e-06
2.250691.5771042.646588e-06
2.261161.5769422.718623e-06
2.271671.5767792.790994e-06
2.282241.5766142.863700e-06
2.292861.5764482.936745e-06
2.303521.576283.010130e-06
2.314241.576113.083856e-06
2.3251.5759393.157925e-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
—