Optical constants

Refractive index of H-BAF5 (CDGM)

H-BAF5: 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
1.60562
Extinction coefficient k
2.34385e-08
Permittivity ε1
2.57801
Permittivity ε2
7.52665e-08
Absorption coefficient α
0.00501254 cm⁻¹
Penetration depth δ = λ/(2πk)
3.98999e+09 nm
Abbe number Vd
43.876
Chromatic dispersion dn/dλ
-0.070383 µm⁻¹
Group index ng
1.64697
Group velocity dispersion
132.246 fs²/mm
Dispersion parameter D
-721.471 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-BAF5 (CDGM): H-BAF5
cdgm_h_baf5 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-BAF5", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_baf5.range_nm)  # (365, 2325) nm
eps = cdgm_h_baf5.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=1.06904566λ2λ2−112.003965+0.10415751λ2λ2−0.0516103587+1.41843612λ2λ2−0.00956493179

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.06904566
C3112.003965
C40.10415751
C50.0516103587
C61.41843612
C70.00956493179

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -8.44e-07 2.08e-08 -7.18e-11 7.13e-07 6.88e-10 0.231
nd
1.605620
Vd
43.875621
glass code
606439
density
value: 2970
thermal expansion
value: 8.2e-06, temperature range: 243 343; value: 9.7e-06, temperature range: 293 573
dPgF
0.0013
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 5.92e-07 K⁻¹ at 633 nm, dn/dT = -1.99e-07 K⁻¹ at 1310 nm, dn/dT = -2.57e-07 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-BAF5 (CDGM), H-BAF5: n and k versus wavelength
λ (µm)nk
0.3651.6422241.400160e-06
0.3666981.6415881.175706e-06
0.3684031.640969.502075e-07
0.371.6403847.391200e-07
0.3701171.6403437.342421e-07
0.3718381.6397346.624282e-07
0.3735681.6391345.902803e-07
0.3753061.6385425.177968e-07
0.3770511.6379594.449762e-07
0.3788051.6373853.718168e-07
0.381.6373.219700e-07
0.3805671.6368193.132970e-07
0.3823371.636262.862209e-07
0.3841161.6357092.590189e-07
0.3859021.6351662.316903e-07
0.3876971.6346312.042346e-07
0.38951.6341031.766512e-07
0.391.6339581.690100e-07
0.3913121.6335821.604168e-07
0.3931321.6330681.484968e-07
0.3949611.6325611.365214e-07
0.3967981.6320611.244903e-07
0.3986441.6315671.124032e-07
0.41.631211.035200e-07
0.4004981.631081.023698e-07
0.4023611.63069.806536e-08
0.4042321.6301259.374095e-08
0.4061121.6296578.939643e-08
0.4080011.6291958.503170e-08
0.4098991.6287398.064666e-08
0.4118061.6282897.624123e-08
0.4137211.6278447.181531e-08
0.4156451.6274056.736881e-08
0.4175791.6269726.290162e-08
0.4195211.6265445.841365e-08
0.421.626445.730700e-08
0.4214721.6261215.646111e-08
0.4234331.6257045.533485e-08
0.4254021.6252925.420336e-08
0.4273811.6248855.306661e-08
0.4293691.6244835.192456e-08
0.4313661.6240865.077721e-08
0.4333721.6236944.962452e-08
0.4353881.6233064.846646e-08
0.4374131.6229234.730302e-08
0.4394481.6225454.613417e-08
0.441.6224434.581700e-08
0.4414921.6221714.486791e-08
0.4435451.6218024.356156e-08
0.4456091.6214374.224913e-08
0.4476811.6210764.093060e-08
0.4497641.620723.960594e-08
0.4518561.6203683.827511e-08
0.4539571.620023.693810e-08
0.4560691.6196763.559486e-08
0.458191.6193363.424538e-08
0.461.619053.309400e-08
0.4603211.6193.299341e-08
0.4624621.6186673.232303e-08
0.4646131.6183393.164953e-08
0.4667751.6180143.097290e-08
0.4689461.6176933.029312e-08
0.4711271.6173762.961018e-08
0.4733181.6170622.892406e-08
0.475521.6167522.823476e-08
0.4777321.6164452.754224e-08
0.4799541.6161412.684651e-08
0.481.6161352.683200e-08
0.4821861.6158412.695420e-08
0.4844291.6155452.707958e-08
0.4866821.6152512.720553e-08
0.4889461.6149612.733207e-08
0.491221.6146742.745920e-08
0.4935051.614392.758693e-08
0.49581.6141092.771524e-08
0.4981071.6138312.784415e-08
0.51.6136072.795000e-08
0.5004231.6135572.789910e-08
0.5027511.6132852.761927e-08
0.5050891.6130162.733814e-08
0.5074391.612752.705571e-08
0.5097991.6124872.677195e-08
0.512171.6122262.648688e-08
0.5145531.6119692.620049e-08
0.5169461.6117142.591276e-08
0.519351.6114622.562369e-08
0.5217661.6112122.533328e-08
0.5241931.6109652.504152e-08
0.5266311.6107212.474840e-08
0.5290811.6104792.445391e-08
0.5315421.6102392.415806e-08
0.5340141.6100022.386083e-08
0.5364981.6097682.356222e-08
0.5389931.6095362.326222e-08
0.54151.6093062.296082e-08
0.5440191.6090792.265803e-08
0.5465491.6088542.235382e-08
0.5490921.6086312.204820e-08
0.551.6085522.193900e-08
0.5516461.608412.200463e-08
0.5542121.6081922.210696e-08
0.5567891.6079762.220976e-08
0.5593791.6077622.231304e-08
0.5619811.607552.241680e-08
0.5645951.607342.252105e-08
0.5672211.6071322.262578e-08
0.5698591.6069272.273100e-08
0.572511.6067232.283670e-08
0.5751731.6065212.294290e-08
0.5778481.6063222.304959e-08
0.5805361.6061242.315678e-08
0.5832361.6059282.326447e-08
0.5859491.6057342.337265e-08
0.5886751.6055422.348134e-08
0.5914131.6053522.359054e-08
0.5941641.6051632.370024e-08
0.5969271.6049762.381046e-08
0.5997041.6047922.392119e-08
0.61.6047722.393300e-08
0.6024931.6046082.377339e-08
0.6052961.6044272.359398e-08
0.6081111.6042472.341373e-08
0.610941.6040692.323265e-08
0.6137811.6038932.305073e-08
0.6166361.6037182.286796e-08
0.6195041.6035452.268434e-08
0.6223861.6033732.249986e-08
0.6252811.6032032.231453e-08
0.6281891.6030352.212833e-08
0.6311111.6028682.194127e-08
0.6340471.6027022.175334e-08
0.6369961.6025382.156454e-08
0.6399591.6023762.137485e-08
0.6429351.6022152.118429e-08
0.6459261.6020552.099283e-08
0.648931.6018972.080049e-08
0.651.6018412.073200e-08
0.6519491.601742.057627e-08
0.6549811.6015852.033392e-08
0.6580281.6014312.009044e-08
0.6610881.6012781.984583e-08
0.6641631.6011271.960008e-08
0.6672521.6009771.935319e-08
0.6703561.6008281.910515e-08
0.6734741.600681.885595e-08
0.6766071.6005341.860560e-08
0.6797541.6003891.835408e-08
0.6829151.6002451.810139e-08
0.6860921.6001021.784753e-08
0.6892831.5999611.759249e-08
0.6924891.5998211.733626e-08
0.695711.5996821.707884e-08
0.6989461.5995441.682022e-08
0.71.5994991.673600e-08
0.7021971.5994071.664831e-08
0.7054631.5992711.651795e-08
0.7087451.5991371.638700e-08
0.7120411.5990031.625543e-08
0.7153531.5988711.612325e-08
0.7186811.5987391.599045e-08
0.7220231.5986091.585704e-08
0.7253821.598481.572301e-08
0.7287561.5983511.558835e-08
0.7321461.5982241.545307e-08
0.7355511.5980981.531716e-08
0.7389721.5979721.518062e-08
0.7424091.5978481.504344e-08
0.7458631.5977241.490562e-08
0.7493321.5976021.476716e-08
0.7528171.597481.462806e-08
0.7563191.5973591.448831e-08
0.7598371.597241.434791e-08
0.7633711.5971211.420686e-08
0.7669221.5970031.406515e-08
0.7704891.5968851.392279e-08
0.7740731.5967691.377976e-08
0.7776731.5966531.363606e-08
0.781291.5965391.349170e-08
0.7849241.5964251.334666e-08
0.7885751.5963111.320096e-08
0.7922431.5961991.305457e-08
0.7959281.5960881.290750e-08
0.799631.5959771.275975e-08
0.81.5959661.274500e-08
0.803351.5958671.279840e-08
0.8070861.5957571.285796e-08
0.810841.5956491.291780e-08
0.8146121.5955411.297791e-08
0.8184011.5954331.303831e-08
0.8222081.5953271.309899e-08
0.8260321.5952211.315995e-08
0.8298741.5951161.322119e-08
0.8337341.5950111.328272e-08
0.8376121.5949081.334454e-08
0.8415081.5948041.340664e-08
0.8454221.5947021.346903e-08
0.8493551.59461.353171e-08
0.851.5945831.354200e-08
0.8533051.5944981.359462e-08
0.8572741.5943981.365781e-08
0.8612621.5942981.372129e-08
0.8652681.5941981.378506e-08
0.8692921.5940991.384913e-08
0.8733361.5941.391350e-08
0.8773981.5939021.397817e-08
0.8814791.5938051.404315e-08
0.8855791.5937081.410842e-08
0.8896981.5936121.417399e-08
0.8938361.5935161.423988e-08
0.8979941.5934211.430606e-08
0.91.5933751.433800e-08
0.9021711.5933261.437260e-08
0.9063671.5932321.443949e-08
0.9105831.5931381.450669e-08
0.9148181.5930441.457420e-08
0.9190731.5929511.464203e-08
0.9233481.5928591.471017e-08
0.9276431.5927671.477863e-08
0.9319581.5926751.484741e-08
0.9362931.5925841.491651e-08
0.9406481.5924931.498593e-08
0.9450231.5924021.505567e-08
0.9494191.5923121.512573e-08
0.951.5923011.513500e-08
0.9538351.5922231.519605e-08
0.9582711.5921331.526668e-08
0.9627291.5920451.533764e-08
0.9672071.5919561.540893e-08
0.9717051.5918681.548055e-08
0.9762251.591781.555250e-08
0.9807661.5916921.562479e-08
0.9853281.5916051.569742e-08
0.9899111.5915181.577038e-08
0.9945151.5914321.584368e-08
0.9991411.5913451.591732e-08
11.5913291.593100e-08
1.003791.5912591.599136e-08
1.008461.5911741.606575e-08
1.013151.5910881.614049e-08
1.017861.5910031.621558e-08
1.022591.5909181.629101e-08
1.027351.5908331.636680e-08
1.032131.5907491.644293e-08
1.036931.5906651.651943e-08
1.041751.5905811.659628e-08
1.04661.5904971.667348e-08
1.051471.5904131.675105e-08
1.056361.590331.682897e-08
1.061.5902681.688700e-08
1.061271.5902471.690726e-08
1.066211.5901641.698593e-08
1.071171.5900811.706496e-08
1.076151.5899991.714435e-08
1.081151.5899161.722412e-08
1.086181.5898341.730426e-08
1.091241.5897521.738477e-08
1.096311.589671.746565e-08
1.101411.5895881.754691e-08
1.106531.5895061.762855e-08
1.111681.5894241.771057e-08
1.116851.5893431.779297e-08
1.122051.5892611.787576e-08
1.127271.589181.795892e-08
1.132511.5890991.804248e-08
1.137781.5890171.812642e-08
1.143071.5889361.821076e-08
1.148391.5888551.829549e-08
1.153731.5887741.838061e-08
1.159091.5886931.846612e-08
1.164481.5886121.855204e-08
1.16991.5885321.863835e-08
1.175341.5884511.872507e-08
1.180811.588371.881219e-08
1.18631.5882891.889971e-08
1.191821.5882081.898764e-08
1.197361.5881271.907598e-08
1.21.5880891.911800e-08
1.202931.5880462.080989e-08
1.208531.5879662.403784e-08
1.214151.5878852.728080e-08
1.21981.5878043.053884e-08
1.225471.5877233.381205e-08
1.231171.5876423.710047e-08
1.23691.5875614.040419e-08
1.242651.587484.372328e-08
1.248431.5873984.705781e-08
1.254241.5873175.040784e-08
1.260071.5872365.377346e-08
1.265931.5871545.715473e-08
1.271821.5870726.055173e-08
1.277741.5869916.396453e-08
1.283681.5869096.739321e-08
1.289651.5868277.083783e-08
1.295651.5867457.429848e-08
1.301671.5866637.777522e-08
1.307731.586588.126813e-08
1.313811.5864988.477729e-08
1.319921.5864158.830277e-08
1.326061.5863329.184465e-08
1.332231.5862499.540301e-08
1.338431.5861669.897791e-08
1.344651.5860821.025694e-07
1.350911.5859991.061777e-07
1.357191.5859151.098027e-07
1.36351.5858311.134446e-07
1.369851.5857461.171034e-07
1.376221.5856621.207793e-07
1.382621.5855771.244722e-07
1.389051.5854921.281823e-07
1.395511.5854061.319097e-07
1.41.5853471.345000e-07
1.4021.5853211.343060e-07
1.408521.5852351.336738e-07
1.415071.5851491.330386e-07
1.421661.5850621.324005e-07
1.428271.5849761.317594e-07
1.434911.5848881.311153e-07
1.441591.5848011.304683e-07
1.448291.5847131.298182e-07
1.455031.5846251.291651e-07
1.46181.5845371.285089e-07
1.468591.5844481.278497e-07
1.475431.5843591.271875e-07
1.482291.584271.265221e-07
1.489181.584181.258537e-07
1.496111.5840891.251822e-07
1.503071.5839991.245075e-07
1.510061.5839081.238297e-07
1.517081.5838161.231487e-07
1.524141.5837241.224646e-07
1.531231.5836321.217773e-07
1.538351.5835391.210868e-07
1.545511.5834461.203931e-07
1.55271.5833521.196962e-07
1.559921.5832581.189960e-07
1.567171.5831641.182925e-07
1.574461.5830691.175858e-07
1.581791.5829731.168758e-07
1.589141.5828771.161625e-07
1.596541.582781.154459e-07
1.61.5827351.151100e-07
1.603961.5826831.205953e-07
1.611421.5825861.309263e-07
1.618921.5824871.413054e-07
1.626451.5823891.517327e-07
1.634011.5822891.622085e-07
1.641611.5821891.727331e-07
1.649251.5820891.833066e-07
1.656921.5819881.939293e-07
1.664631.5818862.046014e-07
1.672371.5817842.153231e-07
1.680151.5816812.260947e-07
1.687961.5815782.369165e-07
1.695811.5814742.477885e-07
1.70371.5813692.587111e-07
1.711631.5812632.696846e-07
1.719591.5811572.807090e-07
1.727591.581052.917848e-07
1.735621.5809433.029120e-07
1.743691.5808353.140910e-07
1.751811.5807263.253220e-07
1.759951.5806163.366053e-07
1.768141.5805063.479410e-07
1.776361.5803953.593295e-07
1.784631.5802833.707709e-07
1.792931.580173.822656e-07
1.81.5800743.920600e-07
1.801271.5800573.945348e-07
1.809641.5799424.109072e-07
1.818061.5798274.273558e-07
1.826521.5797114.438809e-07
1.835011.5795954.604829e-07
1.843551.5794774.771620e-07
1.852121.5793594.939188e-07
1.860741.579245.107535e-07
1.869391.5791195.276665e-07
1.878091.5789985.446581e-07
1.886821.5788775.617288e-07
1.89561.5787545.788789e-07
1.904421.578635.961088e-07
1.913281.5785056.134188e-07
1.922181.578386.308093e-07
1.931121.5782536.482808e-07
1.94011.5781256.658334e-07
1.949121.5779976.834678e-07
1.958191.5778677.011841e-07
1.96731.5777377.189829e-07
1.976451.5776057.368644e-07
1.985641.5774727.548291e-07
1.994881.5773397.728774e-07
21.5772647.828900e-07
2.004161.5772048.139472e-07
2.013481.5770688.836249e-07
2.022841.5769319.536267e-07
2.032251.5767931.023954e-06
2.04171.5766531.094608e-06
2.05121.5765131.165592e-06
2.060741.5763711.236905e-06
2.070331.5762291.308550e-06
2.079961.5760851.380528e-06
2.089631.5759391.452841e-06
2.099351.5757931.525490e-06
2.109121.5756451.598478e-06
2.118931.5754961.671804e-06
2.128781.5753461.745472e-06
2.138681.5751951.819483e-06
2.148631.5750421.893838e-06
2.158621.5748881.968538e-06
2.168671.5747332.043586e-06
2.178751.5745762.118983e-06
2.188891.5744182.194731e-06
2.199071.5742582.270831e-06
2.21.5742432.277800e-06
2.20931.5740972.332002e-06
2.219571.5739352.391917e-06
2.22991.5737712.452111e-06
2.240271.5736052.512585e-06
2.250691.5734392.573340e-06
2.261161.573272.634378e-06
2.271671.5731012.695699e-06
2.282241.5729292.757306e-06
2.292861.5727562.819200e-06
2.303521.5725822.881381e-06
2.314241.5724062.943851e-06
2.3251.5722283.006613e-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
—