Optical constants

Refractive index of H-QF8 (CDGM)

H-QF8: 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
1.54072
Extinction coefficient k
1.87414e-08
Permittivity ε1
2.37381
Permittivity ε2
5.77505e-08
Absorption coefficient α
0.00400803 cm⁻¹
Penetration depth δ = λ/(2πk)
4.98998e+09 nm
Abbe number Vd
47.23
Chromatic dispersion dn/dλ
-0.0585474 µm⁻¹
Group index ng
1.57512
Group velocity dispersion
108.292 fs²/mm
Dispersion parameter D
-590.789 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-QF8 (CDGM): H-QF8
cdgm_h_qf8 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-QF8", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_qf8.range_nm)  # (365, 2325) nm
eps = cdgm_h_qf8.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=0.127874264λ2λ2−0.0424546034+1.20201357λ2λ2−0.00811385854+0.92946936λ2λ2−109.832978

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.127874264
C30.0424546034
C41.20201357
C50.00811385854
C60.92946936
C7109.832978

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -2.28e-06 1.48e-08 -8.66e-11 5.08e-07 1.15e-10 0.282
nd
1.540720
Vd
47.230007
glass code
541472
density
value: 2540
thermal expansion
value: 9.6e-06, temperature range: 243 343; value: 1.13e-05, temperature range: 293 573
dPgF
0.0002
resistance
climatic: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -3.10e-07 K⁻¹ at 633 nm, dn/dT = -8.55e-07 K⁻¹ at 1310 nm, dn/dT = -8.91e-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-QF8 (CDGM), H-QF8: n and k versus wavelength
λ (µm)nk
0.3651.5705179.715300e-07
0.3666981.5700128.364004e-07
0.3684031.5695147.006423e-07
0.371.5690575.735600e-07
0.3701171.5690245.701492e-07
0.3718381.5685395.199337e-07
0.3735681.5680624.694846e-07
0.3753061.567594.188009e-07
0.3770511.5671253.678815e-07
0.3788051.5666673.167252e-07
0.381.5663592.818700e-07
0.3805671.5662142.741746e-07
0.3823371.5657672.501502e-07
0.3841161.5653262.260140e-07
0.3859021.5648912.017657e-07
0.3876971.5644611.774045e-07
0.38951.5640371.529300e-07
0.391.563921.461500e-07
0.3913121.5636181.379760e-07
0.3931321.5632041.266376e-07
0.3949611.5627961.152464e-07
0.3967981.5623931.038022e-07
0.3986441.5619959.230482e-08
0.41.5617078.385500e-08
0.4004981.5616028.285638e-08
0.4023611.5612147.911942e-08
0.4042321.5608317.536507e-08
0.4061121.5604527.159326e-08
0.4080011.5600796.780391e-08
0.4098991.5597096.399693e-08
0.4118061.5593446.017224e-08
0.4137211.5589845.632976e-08
0.4156451.5586285.246941e-08
0.4175791.5582764.859111e-08
0.4195211.5579294.469477e-08
0.421.5578444.373400e-08
0.4214721.5575854.310499e-08
0.4234331.5572464.226751e-08
0.4254021.5569114.142612e-08
0.4273811.5565794.058083e-08
0.4293691.5562523.973160e-08
0.4313661.5559283.887843e-08
0.4333721.5556093.802128e-08
0.4353881.5552933.716015e-08
0.4374131.554983.629501e-08
0.4394481.5546713.542585e-08
0.441.5545883.519000e-08
0.4414921.5543663.503365e-08
0.4435451.5540643.481844e-08
0.4456091.5537663.460223e-08
0.4476811.5534713.438501e-08
0.4497641.553183.416678e-08
0.4518561.5528913.394754e-08
0.4539571.5526063.372728e-08
0.4560691.5523243.350599e-08
0.458191.5520463.328368e-08
0.461.5518113.309400e-08
0.4603211.551773.305524e-08
0.4624621.5514983.279691e-08
0.4646131.5512283.253739e-08
0.4667751.5509623.227665e-08
0.4689461.5506983.201471e-08
0.4711271.5504373.175154e-08
0.4733181.550183.148716e-08
0.475521.5499253.122154e-08
0.4777321.5496723.095468e-08
0.4799541.5494233.068659e-08
0.481.5494183.068100e-08
0.4821861.5491762.994472e-08
0.4844291.5489322.918935e-08
0.4866821.548692.843045e-08
0.4889461.5484512.766803e-08
0.491221.5482152.690207e-08
0.4935051.5479812.613254e-08
0.49581.5477492.535943e-08
0.4981071.547522.458272e-08
0.51.5473352.394500e-08
0.5004231.5472942.389078e-08
0.5027511.547072.359271e-08
0.5050891.5468482.329324e-08
0.5074391.5466282.299239e-08
0.5097991.5464112.269013e-08
0.512171.5461962.238647e-08
0.5145531.5459832.208139e-08
0.5169461.5457722.177490e-08
0.519351.5455642.146698e-08
0.5217661.5453572.115763e-08
0.5241931.5451532.084684e-08
0.5266311.5449512.053461e-08
0.5290811.5447512.022092e-08
0.5315421.5445531.990577e-08
0.5340141.5443571.958916e-08
0.5364981.5441621.927108e-08
0.5389931.543971.895151e-08
0.54151.543781.863046e-08
0.5440191.5435921.830792e-08
0.5465491.5434051.798387e-08
0.5490921.543221.765832e-08
0.551.5431551.754200e-08
0.5516461.5430371.759450e-08
0.5542121.5428561.767635e-08
0.5567891.5426771.775858e-08
0.5593791.5424991.784120e-08
0.5619811.5423241.792420e-08
0.5645951.5421491.800758e-08
0.5672211.5419771.809135e-08
0.5698591.5418061.817552e-08
0.572511.5416371.826007e-08
0.5751731.5414691.834502e-08
0.5778481.5413031.843036e-08
0.5805361.5411391.851610e-08
0.5832361.5409761.860224e-08
0.5859491.5408151.868878e-08
0.5886751.5406551.877572e-08
0.5914131.5404971.886307e-08
0.5941641.540341.895082e-08
0.5969271.5401841.903898e-08
0.5997041.5400311.912755e-08
0.61.5400141.913700e-08
0.6024931.5398781.921653e-08
0.6052961.5397271.930593e-08
0.6081111.5395771.939574e-08
0.610941.5394291.948597e-08
0.6137811.5392821.957662e-08
0.6166361.5391361.966769e-08
0.6195041.5389921.975919e-08
0.6223861.5388481.985111e-08
0.6252811.5387071.994346e-08
0.6281891.5385662.003623e-08
0.6311111.5384272.012944e-08
0.6340471.5382892.022308e-08
0.6369961.5381522.031716e-08
0.6399591.5380162.041168e-08
0.6429351.5378812.050663e-08
0.6459261.5377482.060203e-08
0.648931.5376162.069787e-08
0.651.5375692.073200e-08
0.6519491.5374852.057627e-08
0.6549811.5373552.033392e-08
0.6580281.5372262.009044e-08
0.6610881.5370981.984583e-08
0.6641631.5369721.960008e-08
0.6672521.5368461.935319e-08
0.6703561.5367211.910515e-08
0.6734741.5365981.885595e-08
0.6766071.5364751.860560e-08
0.6797541.5363541.835408e-08
0.6829151.5362331.810139e-08
0.6860921.5361141.784753e-08
0.6892831.5359951.759249e-08
0.6924891.5358781.733626e-08
0.695711.5357611.707884e-08
0.6989461.5356451.682022e-08
0.71.5356081.673600e-08
0.7021971.5355311.664831e-08
0.7054631.5354171.651795e-08
0.7087451.5353041.638700e-08
0.7120411.5351921.625543e-08
0.7153531.535081.612325e-08
0.7186811.534971.599045e-08
0.7220231.534861.585704e-08
0.7253821.5347521.572301e-08
0.7287561.5346441.558835e-08
0.7321461.5345371.545307e-08
0.7355511.534431.531716e-08
0.7389721.5343251.518062e-08
0.7424091.534221.504344e-08
0.7458631.5341161.490562e-08
0.7493321.5340131.476716e-08
0.7528171.533911.462806e-08
0.7563191.5338091.448831e-08
0.7598371.5337081.434791e-08
0.7633711.5336071.420686e-08
0.7669221.5335081.406515e-08
0.7704891.5334091.392279e-08
0.7740731.533311.377976e-08
0.7776731.5332131.363606e-08
0.781291.5331161.349170e-08
0.7849241.533021.334666e-08
0.7885751.5329241.320096e-08
0.7922431.5328291.305457e-08
0.7959281.5327351.290750e-08
0.799631.5326411.275975e-08
0.81.5326321.274500e-08
0.803351.5325481.279840e-08
0.8070861.5324551.285796e-08
0.810841.5323631.291780e-08
0.8146121.5322721.297791e-08
0.8184011.5321811.303831e-08
0.8222081.5320911.309899e-08
0.8260321.5320011.315995e-08
0.8298741.5319121.322119e-08
0.8337341.5318231.328272e-08
0.8376121.5317351.334454e-08
0.8415081.5316471.340664e-08
0.8454221.531561.346903e-08
0.8493551.5314741.353171e-08
0.851.531461.354200e-08
0.8533051.5313881.359462e-08
0.8572741.5313021.365781e-08
0.8612621.5312171.372129e-08
0.8652681.5311321.378506e-08
0.8692921.5310481.384913e-08
0.8733361.5309641.391350e-08
0.8773981.530881.397817e-08
0.8814791.5307971.404315e-08
0.8855791.5307151.410842e-08
0.8896981.5306331.417399e-08
0.8938361.5305511.423988e-08
0.8979941.530471.430606e-08
0.91.5304311.433800e-08
0.9021711.5303891.437260e-08
0.9063671.5303081.443949e-08
0.9105831.5302281.450669e-08
0.9148181.5301481.457420e-08
0.9190731.5300681.464203e-08
0.9233481.5299891.471017e-08
0.9276431.529911.477863e-08
0.9319581.5298321.484741e-08
0.9362931.5297541.491651e-08
0.9406481.5296761.498593e-08
0.9450231.5295981.505567e-08
0.9494191.5295211.512573e-08
0.951.5295111.513500e-08
0.9538351.5294441.519605e-08
0.9582711.5293681.526668e-08
0.9627291.5292911.533764e-08
0.9672071.5292151.540893e-08
0.9717051.5291391.548055e-08
0.9762251.5290641.555250e-08
0.9807661.5289881.562479e-08
0.9853281.5289131.569742e-08
0.9899111.5288391.577038e-08
0.9945151.5287641.584368e-08
0.9991411.528691.591732e-08
11.5286761.593100e-08
1.003791.5286151.599136e-08
1.008461.5285411.606575e-08
1.013151.5284681.614049e-08
1.017861.5283941.621558e-08
1.022591.5283211.629101e-08
1.027351.5282481.636680e-08
1.032131.5281751.644293e-08
1.036931.5281021.651943e-08
1.041751.5280291.659628e-08
1.04661.5279571.667348e-08
1.051471.5278841.675105e-08
1.056361.5278121.682897e-08
1.061.5277581.688700e-08
1.061271.527741.690726e-08
1.066211.5276681.698593e-08
1.071171.5275961.706496e-08
1.076151.5275241.714435e-08
1.081151.5274521.722412e-08
1.086181.5273811.730426e-08
1.091241.5273091.738477e-08
1.096311.5272381.746565e-08
1.101411.5271671.754691e-08
1.106531.5270961.762855e-08
1.111681.5270241.771057e-08
1.116851.5269531.779297e-08
1.122051.5268821.787576e-08
1.127271.5268111.795892e-08
1.132511.526741.804248e-08
1.137781.5266691.812642e-08
1.143071.5265981.821076e-08
1.148391.5265281.829549e-08
1.153731.5264571.838061e-08
1.159091.5263861.846612e-08
1.164481.5263151.855204e-08
1.16991.5262441.863835e-08
1.175341.5261731.872507e-08
1.180811.5261021.881219e-08
1.18631.5260311.889971e-08
1.191821.525961.898764e-08
1.197361.5258891.907598e-08
1.21.5258561.911800e-08
1.202931.5258181.916472e-08
1.208531.5257471.925385e-08
1.214151.5256761.934340e-08
1.21981.5256051.943336e-08
1.225471.5255331.952374e-08
1.231171.5254621.961454e-08
1.23691.5253911.970577e-08
1.242651.5253191.979742e-08
1.248431.5252471.988949e-08
1.254241.5251761.998199e-08
1.260071.5251042.007493e-08
1.265931.5250322.016829e-08
1.271821.524962.026209e-08
1.277741.5248872.035633e-08
1.283681.5248152.045101e-08
1.289651.5247422.054612e-08
1.295651.5246692.064168e-08
1.301671.5245972.073768e-08
1.307731.5245242.083413e-08
1.313811.524452.093103e-08
1.319921.5243772.102837e-08
1.326061.5243032.112617e-08
1.332231.5242292.122443e-08
1.338431.5241552.132314e-08
1.344651.5240812.142231e-08
1.350911.5240072.152195e-08
1.357191.5239322.162204e-08
1.36351.5238572.172260e-08
1.369851.5237822.182363e-08
1.376221.5237072.192513e-08
1.382621.5236312.202711e-08
1.389051.5235552.212955e-08
1.395511.5234792.223247e-08
1.41.5234262.230400e-08
1.4021.5234032.259142e-08
1.408521.5233262.352812e-08
1.415071.5232492.446918e-08
1.421661.5231722.541462e-08
1.428271.5230942.636445e-08
1.434911.5230162.731870e-08
1.441591.5229382.827739e-08
1.448291.5228592.924054e-08
1.455031.5227813.020816e-08
1.46181.5227013.118029e-08
1.468591.5226223.215694e-08
1.475431.5225423.313814e-08
1.482291.5224623.412389e-08
1.489181.5223813.511424e-08
1.496111.52233.610918e-08
1.503071.5222183.710876e-08
1.510061.5221373.811299e-08
1.517081.5220543.912188e-08
1.524141.5219724.013547e-08
1.531231.5218894.115378e-08
1.538351.5218054.217682e-08
1.545511.5217214.320462e-08
1.55271.5216374.423720e-08
1.559921.5215524.527458e-08
1.567171.5214674.631679e-08
1.574461.5213814.736384e-08
1.581791.5212954.841577e-08
1.589141.5212084.947258e-08
1.596541.5211215.053432e-08
1.61.521085.103200e-08
1.603961.5210335.954147e-08
1.611421.5209457.556816e-08
1.618921.5208569.166939e-08
1.626451.5207671.078455e-07
1.634011.5206771.240969e-07
1.641611.5205871.404238e-07
1.649251.5204961.568267e-07
1.656921.5204051.733059e-07
1.664631.5203131.898618e-07
1.672371.520222.064946e-07
1.680151.5201272.232048e-07
1.687961.5200332.399928e-07
1.695811.5199392.568588e-07
1.70371.5198442.738033e-07
1.711631.5197482.908266e-07
1.719591.5196523.079290e-07
1.727591.5195553.251110e-07
1.735621.5194573.423730e-07
1.743691.5193593.597152e-07
1.751811.519263.771381e-07
1.759951.5191613.946420e-07
1.768141.519064.122274e-07
1.776361.5189594.298945e-07
1.784631.5188584.476438e-07
1.792931.5187554.654757e-07
1.81.5186684.806700e-07
1.801271.5186524.860298e-07
1.809641.5185485.214879e-07
1.818061.5184435.571110e-07
1.826521.5183385.928998e-07
1.835011.5182326.288550e-07
1.843551.5181246.649775e-07
1.852121.5180177.012680e-07
1.860741.5179087.377273e-07
1.869391.5177987.743562e-07
1.878091.5176888.111555e-07
1.886821.5175778.481259e-07
1.89561.5174658.852683e-07
1.904421.5173529.225834e-07
1.913281.5172389.600722e-07
1.922181.5171249.977352e-07
1.931121.5170081.035574e-06
1.94011.5168921.073588e-06
1.949121.5167741.111779e-06
1.958191.5166561.150148e-06
1.96731.5165361.188695e-06
1.976451.5164161.227421e-06
1.985641.5162951.266328e-06
1.994881.5161731.305415e-06
21.5161051.327100e-06
2.004161.5160491.362079e-06
2.013481.5159251.440557e-06
2.022841.51581.519399e-06
2.032251.5156731.598608e-06
2.04171.5155461.678185e-06
2.05121.5154171.758132e-06
2.060741.5152881.838452e-06
2.070331.5151571.919145e-06
2.079961.5150252.000213e-06
2.089631.5148922.081658e-06
2.099351.5147582.163482e-06
2.109121.5146232.245687e-06
2.118931.5144872.328274e-06
2.128781.5143492.411245e-06
2.138681.514212.494603e-06
2.148631.514072.578347e-06
2.158621.5139292.662482e-06
2.168671.5137862.747008e-06
2.178751.5136432.831927e-06
2.188891.5134972.917240e-06
2.199071.5133513.002951e-06
2.21.5133383.010800e-06
2.20931.5132033.091422e-06
2.219571.5130543.180542e-06
2.22991.5129043.270076e-06
2.240271.5127523.360027e-06
2.250691.5125993.450397e-06
2.261161.5124453.541187e-06
2.271671.5122893.632399e-06
2.282241.5121313.724035e-06
2.292861.5119733.816098e-06
2.303521.5118123.908588e-06
2.314241.511654.001509e-06
2.3251.5114874.094863e-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
—