Optical constants

Refractive index of H-BAF7 (CDGM)

H-BAF7: 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
1.61413
Extinction coefficient k
2.45299e-08
Permittivity ε1
2.60541
Permittivity ε2
7.91889e-08
Absorption coefficient α
0.00524595 cm⁻¹
Penetration depth δ = λ/(2πk)
3.81246e+09 nm
Abbe number Vd
39.985
Chromatic dispersion dn/dλ
-0.0780646 µm⁻¹
Group index ng
1.66
Group velocity dispersion
149.409 fs²/mm
Dispersion parameter D
-815.106 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-BAF7 (CDGM): H-BAF7
cdgm_h_baf7 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-BAF7", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_baf7.range_nm)  # (365, 2325) nm
eps = cdgm_h_baf7.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=1.08754258λ2λ2−117.535981+1.41618001λ2λ2−0.0100875311+0.12698713λ2λ2−0.0526006682

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.08754258
C3117.535981
C41.41618001
C50.0100875311
C60.12698713
C70.0526006682

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -1.75e-06 1.92e-08 -3.75e-11 9.38e-07 3.34e-10 0.198
nd
1.614130
Vd
39.985319
glass code
614400
density
value: 2880
thermal expansion
value: 8.3e-06, temperature range: 243 343; value: 1.03e-05, temperature range: 293 573
dPgF
0.0015
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 4.18e-07 K⁻¹ at 633 nm, dn/dT = -5.75e-07 K⁻¹ at 1310 nm, dn/dT = -6.51e-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-BAF7 (CDGM), H-BAF7: n and k versus wavelength
λ (µm)nk
0.3651.6555352.176050e-06
0.3666981.6548021.809594e-06
0.3684031.654081.441433e-06
0.371.6534171.096800e-06
0.3701171.6533691.089185e-06
0.3718381.6526699.770697e-07
0.3735681.651988.644331e-07
0.3753061.6513017.512727e-07
0.3770511.6506326.375859e-07
0.3788051.6499735.233704e-07
0.381.6495324.455500e-07
0.3805671.6493244.323018e-07
0.3823371.6486843.909424e-07
0.3841161.6480543.493907e-07
0.3859021.6474333.076456e-07
0.3876971.646822.657064e-07
0.38951.6462172.235722e-07
0.391.6460512.119000e-07
0.3913121.6456211.998428e-07
0.3931321.6450351.831177e-07
0.3949611.6444561.663148e-07
0.3967981.6438861.494337e-07
0.3986441.6433231.324741e-07
0.41.6429161.200100e-07
0.4004981.6427681.185340e-07
0.4023611.6422211.130106e-07
0.4042321.6416811.074614e-07
0.4061121.6411481.018865e-07
0.4080011.6406229.628562e-08
0.4098991.6401049.065870e-08
0.4118061.6395928.500561e-08
0.4137211.6390877.932622e-08
0.4156451.6385897.362041e-08
0.4175791.6380976.788807e-08
0.4195211.6376126.212906e-08
0.421.6374936.070900e-08
0.4214721.6371335.935160e-08
0.4234331.636665.754430e-08
0.4254021.6361935.572859e-08
0.4273811.6357325.390444e-08
0.4293691.6352775.207180e-08
0.4313661.6348275.023064e-08
0.4333721.6343844.838092e-08
0.4353881.6339454.652259e-08
0.4374131.6335134.465562e-08
0.4394481.6330854.277997e-08
0.441.632974.227100e-08
0.4414921.6326634.186214e-08
0.4435451.6322464.129937e-08
0.4456091.6318344.073398e-08
0.4476811.6314274.016596e-08
0.4497641.6310253.959531e-08
0.4518561.6306283.902199e-08
0.4539571.6302363.844602e-08
0.4560691.6298483.786736e-08
0.458191.6294653.728601e-08
0.461.6291443.679000e-08
0.4603211.6290873.675374e-08
0.4624621.6287133.651212e-08
0.4646131.6283433.626937e-08
0.4667751.6279783.602550e-08
0.4689461.6276173.578048e-08
0.4711271.627263.553433e-08
0.4733181.6269083.528704e-08
0.475521.6265593.503859e-08
0.4777321.6262143.478899e-08
0.4799541.6258743.453823e-08
0.481.6258673.453300e-08
0.4821861.6255373.425165e-08
0.4844291.6252043.396300e-08
0.4866821.6248753.367301e-08
0.4889461.6245493.338167e-08
0.491221.6242283.308897e-08
0.4935051.623913.279491e-08
0.49581.6235953.249949e-08
0.4981071.6232843.220269e-08
0.51.6230323.195900e-08
0.5004231.6229763.191142e-08
0.5027511.6226723.164984e-08
0.5050891.6223713.138704e-08
0.5074391.6220733.112303e-08
0.5097991.6217793.085778e-08
0.512171.6214883.059130e-08
0.5145531.62123.032358e-08
0.5169461.6209153.005461e-08
0.519351.6206332.978440e-08
0.5217661.6203542.951292e-08
0.5241931.6200792.924019e-08
0.5266311.6198062.896618e-08
0.5290811.6195362.869091e-08
0.5315421.6192692.841435e-08
0.5340141.6190042.813650e-08
0.5364981.6187432.785736e-08
0.5389931.6184842.757693e-08
0.54151.6182282.729519e-08
0.5440191.6179752.701213e-08
0.5465491.6177242.672777e-08
0.5490921.6174762.644208e-08
0.551.6173882.634000e-08
0.5516461.6172312.626078e-08
0.5542121.6169872.613725e-08
0.5567891.6167472.601316e-08
0.5593791.6165092.588848e-08
0.5619811.6162732.576323e-08
0.5645951.616042.563740e-08
0.5672211.6158092.551097e-08
0.5698591.6155812.538396e-08
0.572511.6153542.525636e-08
0.5751731.615132.512817e-08
0.5778481.6149092.499938e-08
0.5805361.6146892.486999e-08
0.5832361.6144722.474000e-08
0.5859491.6142562.460941e-08
0.5886751.6140432.447820e-08
0.5914131.6138322.434639e-08
0.5941641.6136232.421396e-08
0.5969271.6134172.408092e-08
0.5997041.6132122.394726e-08
0.61.613192.393300e-08
0.6024931.6130092.377339e-08
0.6052961.6128082.359398e-08
0.6081111.6126092.341373e-08
0.610941.6124122.323265e-08
0.6137811.6122172.305073e-08
0.6166361.6120232.286796e-08
0.6195041.6118322.268434e-08
0.6223861.6116422.249986e-08
0.6252811.6114542.231453e-08
0.6281891.6112682.212833e-08
0.6311111.6110832.194127e-08
0.6340471.6109012.175334e-08
0.6369961.610722.156454e-08
0.6399591.610542.137485e-08
0.6429351.6103632.118429e-08
0.6459261.6101872.099283e-08
0.648931.6100122.080049e-08
0.651.6099512.073200e-08
0.6519491.6098392.079412e-08
0.6549811.6096682.089079e-08
0.6580281.6094982.098792e-08
0.6610881.609332.108549e-08
0.6641631.6091632.118352e-08
0.6672521.6089982.128201e-08
0.6703561.6088342.138095e-08
0.6734741.6086722.148035e-08
0.6766071.6085112.158022e-08
0.6797541.6083522.168055e-08
0.6829151.6081942.178135e-08
0.6860921.6080372.188261e-08
0.6892831.6078822.198435e-08
0.6924891.6077282.208656e-08
0.695711.6075752.218924e-08
0.6989461.6074232.229241e-08
0.71.6073752.232600e-08
0.7021971.6072732.225571e-08
0.7054631.6071242.215123e-08
0.7087451.6069772.204625e-08
0.7120411.606832.194080e-08
0.7153531.6066852.183485e-08
0.7186811.6065412.172841e-08
0.7220231.6063992.162147e-08
0.7253821.6062572.151403e-08
0.7287561.6061172.140610e-08
0.7321461.6059772.129766e-08
0.7355511.6058392.118872e-08
0.7389721.6057022.107928e-08
0.7424091.6055662.096932e-08
0.7458631.6054312.085885e-08
0.7493321.6052972.074787e-08
0.7528171.6051652.063637e-08
0.7563191.6050332.052436e-08
0.7598371.6049022.041182e-08
0.7633711.6047732.029876e-08
0.7669221.6046442.018517e-08
0.7704891.6045162.007106e-08
0.7740731.6043891.995641e-08
0.7776731.6042641.984123e-08
0.781291.6041391.972552e-08
0.7849241.6040151.960927e-08
0.7885751.6038921.949247e-08
0.7922431.603771.937514e-08
0.7959281.6036481.925725e-08
0.799631.6035281.913882e-08
0.81.6035161.912700e-08
0.803351.6034081.875283e-08
0.8070861.603291.833545e-08
0.810841.6031721.791612e-08
0.8146121.6030551.749485e-08
0.8184011.6029391.707161e-08
0.8222081.6028231.664641e-08
0.8260321.6027091.621923e-08
0.8298741.6025951.579006e-08
0.8337341.6024821.535890e-08
0.8376121.6023691.492573e-08
0.8415081.6022581.449054e-08
0.8454221.6021471.405333e-08
0.8493551.6020371.361409e-08
0.851.6020191.354200e-08
0.8533051.6019271.359462e-08
0.8572741.6018191.365781e-08
0.8612621.6017111.372129e-08
0.8652681.6016031.378506e-08
0.8692921.6014961.384913e-08
0.8733361.601391.391350e-08
0.8773981.6012851.397817e-08
0.8814791.601181.404315e-08
0.8855791.6010761.410842e-08
0.8896981.6009731.417399e-08
0.8938361.600871.423988e-08
0.8979941.6007671.430606e-08
0.91.6007181.433800e-08
0.9021711.6006651.437260e-08
0.9063671.6005641.443949e-08
0.9105831.6004641.450669e-08
0.9148181.6003631.457420e-08
0.9190731.6002641.464203e-08
0.9233481.6001651.471017e-08
0.9276431.6000661.477863e-08
0.9319581.5999681.484741e-08
0.9362931.5998711.491651e-08
0.9406481.5997741.498593e-08
0.9450231.5996771.505567e-08
0.9494191.5995811.512573e-08
0.951.5995681.513500e-08
0.9538351.5994851.519605e-08
0.9582711.599391.526668e-08
0.9627291.5992961.533764e-08
0.9672071.5992011.540893e-08
0.9717051.5991071.548055e-08
0.9762251.5990141.555250e-08
0.9807661.5989211.562479e-08
0.9853281.5988281.569742e-08
0.9899111.5987361.577038e-08
0.9945151.5986441.584368e-08
0.9991411.5985531.591732e-08
11.5985361.593100e-08
1.003791.5984621.599136e-08
1.008461.5983711.606575e-08
1.013151.598281.614049e-08
1.017861.598191.621558e-08
1.022591.59811.629101e-08
1.027351.5980111.636680e-08
1.032131.5979221.644293e-08
1.036931.5978331.651943e-08
1.041751.5977441.659628e-08
1.04661.5976561.667348e-08
1.051471.5975681.675105e-08
1.056361.597481.682897e-08
1.061.5974161.688700e-08
1.061271.5973931.690726e-08
1.066211.5973061.698593e-08
1.071171.5972191.706496e-08
1.076151.5971321.714435e-08
1.081151.5970461.722412e-08
1.086181.5969591.730426e-08
1.091241.5968731.738477e-08
1.096311.5967871.746565e-08
1.101411.5967021.754691e-08
1.106531.5966161.762855e-08
1.111681.5965311.771057e-08
1.116851.5964461.779297e-08
1.122051.5963611.787576e-08
1.127271.5962761.795892e-08
1.132511.5961911.804248e-08
1.137781.5961071.812642e-08
1.143071.5960221.821076e-08
1.148391.5959381.829549e-08
1.153731.5958541.838061e-08
1.159091.595771.846612e-08
1.164481.5956861.855204e-08
1.16991.5956021.863835e-08
1.175341.5955181.872507e-08
1.180811.5954341.881219e-08
1.18631.595351.889971e-08
1.191821.5952671.898764e-08
1.197361.5951831.907598e-08
1.21.5951441.911800e-08
1.202931.59511.982079e-08
1.208531.5950162.116163e-08
1.214151.5949332.250871e-08
1.21981.5948492.386205e-08
1.225471.5947662.522169e-08
1.231171.5946822.658766e-08
1.23691.5945992.795997e-08
1.242651.5945152.933867e-08
1.248431.5944323.072379e-08
1.254241.5943483.211534e-08
1.260071.5942653.351337e-08
1.265931.5941813.491790e-08
1.271821.5940983.632897e-08
1.277741.5940143.774660e-08
1.283681.593933.917082e-08
1.289651.5938464.060166e-08
1.295651.5937624.203916e-08
1.301671.5936784.348335e-08
1.307731.5935944.493426e-08
1.313811.593514.639191e-08
1.319921.5934264.785635e-08
1.326061.5933414.932759e-08
1.332231.5932575.080568e-08
1.338431.5931725.229064e-08
1.344651.5930875.378251e-08
1.350911.5930025.528132e-08
1.357191.5929175.678710e-08
1.36351.5928315.829989e-08
1.369851.5927465.981971e-08
1.376221.592666.134660e-08
1.382621.5925746.288059e-08
1.389051.5924886.442172e-08
1.395511.5924026.597002e-08
1.41.5923426.704600e-08
1.4021.5923156.727005e-08
1.408521.5922286.800023e-08
1.415071.5921416.873380e-08
1.421661.5920546.947078e-08
1.428271.5919667.021119e-08
1.434911.5918797.095505e-08
1.441591.5917917.170236e-08
1.448291.5917027.245316e-08
1.455031.5916147.320744e-08
1.46181.5915257.396523e-08
1.468591.5914367.472655e-08
1.475431.5913467.549141e-08
1.482291.5912567.625982e-08
1.489181.5911667.703181e-08
1.496111.5910757.780739e-08
1.503071.5909857.858658e-08
1.510061.5908937.936939e-08
1.517081.5908028.015585e-08
1.524141.590718.094596e-08
1.531231.5906188.173974e-08
1.538351.5905258.253722e-08
1.545511.5904328.333841e-08
1.55271.5903388.414333e-08
1.559921.5902448.495198e-08
1.567171.590158.576440e-08
1.574461.5900558.658060e-08
1.581791.589968.740060e-08
1.589141.5898648.822441e-08
1.596541.5897688.905205e-08
1.61.5897238.944000e-08
1.603961.5896719.397957e-08
1.611421.5895741.025294e-07
1.618921.5894771.111189e-07
1.626451.5893791.197484e-07
1.634011.589281.284181e-07
1.641611.5891811.371281e-07
1.649251.5890811.458786e-07
1.656921.5889811.546698e-07
1.664631.588881.635018e-07
1.672371.5887791.723750e-07
1.680151.5886771.812894e-07
1.687961.5885751.902453e-07
1.695811.5884711.992429e-07
1.70371.5883682.082823e-07
1.711631.5882642.173638e-07
1.719591.5881592.264875e-07
1.727591.5880532.356536e-07
1.735621.5879472.448624e-07
1.743691.587842.541140e-07
1.751811.5877332.634086e-07
1.759951.5876252.727465e-07
1.768141.5875162.821278e-07
1.776361.5874062.915527e-07
1.784631.5872963.010215e-07
1.792931.5871853.105343e-07
1.81.5870913.186400e-07
1.801271.5870743.206314e-07
1.809641.5869613.338058e-07
1.818061.5868483.470416e-07
1.826521.5867343.603388e-07
1.835011.586623.736980e-07
1.843551.5865043.871192e-07
1.852121.5863884.006029e-07
1.860741.5862714.141493e-07
1.869391.5861534.277587e-07
1.878091.5860344.414315e-07
1.886821.5859154.551678e-07
1.89561.5857944.689680e-07
1.904421.5856734.828324e-07
1.913281.5855514.967613e-07
1.922181.5854285.107549e-07
1.931121.5853045.248137e-07
1.94011.5851795.389379e-07
1.949121.5850535.531277e-07
1.958191.5849275.673836e-07
1.96731.5847995.817057e-07
1.976451.584675.960945e-07
1.985641.5845416.105502e-07
1.994881.584416.250731e-07
21.5843376.331300e-07
2.004161.5842786.538798e-07
2.013481.5841467.004324e-07
2.022841.5840127.472015e-07
2.032251.5838777.941882e-07
2.04171.5837418.413934e-07
2.05121.5836048.888182e-07
2.060741.5834669.364636e-07
2.070331.5833279.843306e-07
2.079961.5831871.032420e-06
2.089631.5830451.080734e-06
2.099351.5829031.129272e-06
2.109121.5827591.178035e-06
2.118931.5826141.227026e-06
2.128781.5824681.276245e-06
2.138681.5823211.325692e-06
2.148631.5821721.375369e-06
2.158621.5820221.425278e-06
2.168671.5818711.475419e-06
2.178751.5817191.525792e-06
2.188891.5815651.576401e-06
2.199071.581411.627244e-06
2.21.5813961.631900e-06
2.20931.5812541.661495e-06
2.219571.5810961.694209e-06
2.22991.5809371.727075e-06
2.240271.5807771.760094e-06
2.250691.5806151.793267e-06
2.261161.5804521.826594e-06
2.271671.5802871.860076e-06
2.282241.5801211.893714e-06
2.292861.5799531.927509e-06
2.303521.5797841.961460e-06
2.314241.5796131.995569e-06
2.3251.5794412.029838e-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
—