Optical constants

Refractive index of H-LAF1 (CDGM)

H-LAF1: 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
1.69362
Extinction coefficient k
1.51379e-08
Permittivity ε1
2.86834
Permittivity ε2
5.12755e-08
Absorption coefficient α
0.00323737 cm⁻¹
Penetration depth δ = λ/(2πk)
6.17785e+09 nm
Abbe number Vd
49.194
Chromatic dispersion dn/dλ
-0.0722884 µm⁻¹
Group index ng
1.73609
Group velocity dispersion
132.533 fs²/mm
Dispersion parameter D
-723.04 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-LAF1 (CDGM): H-LAF1
cdgm_h_laf1 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAF1", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_laf1.range_nm)  # (365, 2325) nm
eps = cdgm_h_laf1.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=1.1615525λ2λ2−106.692961+1.49000619λ2λ2−0.0073654243+0.317836401λ2λ2−0.0313945298

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.1615525
C3106.692961
C41.49000619
C50.0073654243
C60.317836401
C70.0313945298

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 1e-06 2.31e-08 -1.6e-10 5.94e-07 -4.95e-10 0.215
nd
1.693620
Vd
49.193837
glass code
694492
density
value: 3850
thermal expansion
value: 7.1e-06, temperature range: 243 343; value: 8.5e-06, temperature range: 293 573
dPgF
-0.0028
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.47e-06 K⁻¹ at 633 nm, dn/dT = 7.30e-07 K⁻¹ at 1310 nm, dn/dT = 6.71e-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-LAF1 (CDGM), H-LAF1: n and k versus wavelength
λ (µm)nk
0.3651.7296177.845700e-07
0.3666981.7290266.984507e-07
0.3684031.7284416.119308e-07
0.371.7279035.309400e-07
0.3701171.7278645.283002e-07
0.3718381.7272944.894365e-07
0.3735681.7267314.503921e-07
0.3753061.7261754.111660e-07
0.3770511.7256263.717575e-07
0.3788051.7250833.321657e-07
0.381.7247183.051900e-07
0.3805671.7245472.993362e-07
0.3823371.7240172.810612e-07
0.3841161.7234942.627013e-07
0.3859021.7229772.442559e-07
0.3876971.7224662.257248e-07
0.38951.7219622.071074e-07
0.391.7218242.019500e-07
0.3913121.7214631.938082e-07
0.3931321.720971.825143e-07
0.3949611.7204841.711679e-07
0.3967981.7200021.597688e-07
0.3986441.7195271.483166e-07
0.41.7191821.399000e-07
0.4004981.7190571.384388e-07
0.4023611.7185921.329705e-07
0.4042321.7181331.274769e-07
0.4061121.7176791.219577e-07
0.4080011.7172311.164129e-07
0.4098991.7167871.108422e-07
0.4118061.7163491.052456e-07
0.4137211.7159169.962305e-08
0.4156451.7154879.397430e-08
0.4175791.7150648.829928e-08
0.4195211.7146458.259786e-08
0.421.7145438.119200e-08
0.4214721.7142317.963450e-08
0.4234331.7138227.756078e-08
0.4254021.7134177.547741e-08
0.4273811.7130177.338436e-08
0.4293691.7126217.128157e-08
0.4313661.712236.916900e-08
0.4333721.7118436.704660e-08
0.4353881.711466.491433e-08
0.4374131.7110826.277214e-08
0.4394481.7107086.061999e-08
0.441.7106076.003600e-08
0.4414921.7103375.857786e-08
0.4435451.7099715.657085e-08
0.4456091.7096095.455450e-08
0.4476811.7092515.252877e-08
0.4497641.7088975.049362e-08
0.4518561.7085464.844901e-08
0.4539571.70824.639488e-08
0.4560691.7078574.433120e-08
0.458191.7075174.225792e-08
0.461.7072324.048900e-08
0.4603211.7071824.033145e-08
0.4624621.706853.928145e-08
0.4646131.7065213.822657e-08
0.4667751.7061963.716678e-08
0.4689461.7058753.610206e-08
0.4711271.7055573.503239e-08
0.4733181.7052423.395774e-08
0.475521.704933.287810e-08
0.4777321.7046223.179343e-08
0.4799541.7043173.070372e-08
0.481.7043113.068100e-08
0.4821861.7040152.950739e-08
0.4844291.7037172.830334e-08
0.4866821.7034212.709369e-08
0.4889461.7031292.587841e-08
0.491221.7028392.465748e-08
0.4935051.7025532.343087e-08
0.49581.7022692.219856e-08
0.4981071.7019882.096051e-08
0.51.7017611.994400e-08
0.5004231.7017111.992366e-08
0.5027511.7014361.981184e-08
0.5050891.7011631.969950e-08
0.5074391.7008941.958664e-08
0.5097991.7006271.947325e-08
0.512171.7003631.935934e-08
0.5145531.7001021.924489e-08
0.5169461.6998431.912992e-08
0.519351.6995871.901441e-08
0.5217661.6993341.889836e-08
0.5241931.6990821.878177e-08
0.5266311.6988341.866464e-08
0.5290811.6985881.854696e-08
0.5315421.6983441.842874e-08
0.5340141.6981031.830997e-08
0.5364981.6978641.819064e-08
0.5389931.6976271.807076e-08
0.54151.6973931.795032e-08
0.5440191.6971611.782932e-08
0.5465491.6969311.770776e-08
0.5490921.6967041.758564e-08
0.551.6966231.754200e-08
0.5516461.6964791.743677e-08
0.5542121.6962551.727271e-08
0.5567891.6960341.710789e-08
0.5593791.6958151.694229e-08
0.5619811.6955991.677593e-08
0.5645951.6953841.660879e-08
0.5672211.6951711.644088e-08
0.5698591.6949611.627219e-08
0.572511.6947521.610271e-08
0.5751731.6945451.593244e-08
0.5778481.694341.576138e-08
0.5805361.6941371.558952e-08
0.5832361.6939361.541687e-08
0.5859491.6937371.524341e-08
0.5886751.693541.506914e-08
0.5914131.6933441.489407e-08
0.5941641.6931511.471818e-08
0.5969271.6929591.454147e-08
0.5997041.6927691.436394e-08
0.61.6927481.434500e-08
0.6024931.692581.492257e-08
0.6052961.6923931.557177e-08
0.6081111.6922081.622400e-08
0.610941.6920251.687925e-08
0.6137811.6918431.753756e-08
0.6166361.6916631.819892e-08
0.6195041.6914851.886336e-08
0.6223861.6913081.953090e-08
0.6252811.6911322.020153e-08
0.6281891.6909592.087529e-08
0.6311111.6907862.155218e-08
0.6340471.6906162.223222e-08
0.6369961.6904462.291542e-08
0.6399591.6902782.360180e-08
0.6429351.6901122.429138e-08
0.6459261.6899472.498416e-08
0.648931.6897842.568016e-08
0.651.6897262.592800e-08
0.6519491.6896222.622398e-08
0.6549811.6894612.668461e-08
0.6580281.6893012.714738e-08
0.6610881.6891432.761230e-08
0.6641631.6889872.807938e-08
0.6672521.6888312.854864e-08
0.6703561.6886772.902008e-08
0.6734741.6885242.949371e-08
0.6766071.6883732.996954e-08
0.6797541.6882233.044759e-08
0.6829151.6880733.092786e-08
0.6860921.6879263.141037e-08
0.6892831.6877793.189512e-08
0.6924891.6876333.238212e-08
0.695711.6874893.287139e-08
0.6989461.6873463.336293e-08
0.71.68733.352300e-08
0.7021971.6872043.362823e-08
0.7054631.6870633.378464e-08
0.7087451.6869233.394179e-08
0.7120411.6867843.409966e-08
0.7153531.6866473.425827e-08
0.7186811.686513.441762e-08
0.7220231.6863753.457770e-08
0.7253821.686243.473854e-08
0.7287561.6861073.490012e-08
0.7321461.6859743.506245e-08
0.7355511.6858433.522554e-08
0.7389721.6857123.538938e-08
0.7424091.6855833.555399e-08
0.7458631.6854543.571936e-08
0.7493321.6853273.588551e-08
0.7528171.68523.605242e-08
0.7563191.6850743.622011e-08
0.7598371.6849493.638858e-08
0.7633711.6848253.655784e-08
0.7669221.6847023.672788e-08
0.7704891.684583.689872e-08
0.7740731.6844583.707034e-08
0.7776731.6843383.724277e-08
0.781291.6842183.741600e-08
0.7849241.6840993.759003e-08
0.7885751.6839813.776488e-08
0.7922431.6838643.794053e-08
0.7959281.6837473.811701e-08
0.799631.6836313.829430e-08
0.81.683623.831200e-08
0.803351.6835163.665252e-08
0.8070861.6834023.480138e-08
0.810841.6832883.294164e-08
0.8146121.6831763.107324e-08
0.8184011.6830632.919616e-08
0.8222081.6829522.731034e-08
0.8260321.6828412.541575e-08
0.8298741.6827312.351235e-08
0.8337341.6826222.160010e-08
0.8376121.6825131.967895e-08
0.8415081.6824051.774887e-08
0.8454221.6822981.580981e-08
0.8493551.6821911.386173e-08
0.851.6821731.354200e-08
0.8533051.6820851.359462e-08
0.8572741.6819791.365781e-08
0.8612621.6818741.372129e-08
0.8652681.681771.378506e-08
0.8692921.6816661.384913e-08
0.8733361.6815631.391350e-08
0.8773981.681461.397817e-08
0.8814791.6813581.404315e-08
0.8855791.6812561.410842e-08
0.8896981.6811551.417399e-08
0.8938361.6810541.423988e-08
0.8979941.6809541.430606e-08
0.91.6809061.433800e-08
0.9021711.6808551.437260e-08
0.9063671.6807551.443949e-08
0.9105831.6806571.450669e-08
0.9148181.6805591.457420e-08
0.9190731.6804611.464203e-08
0.9233481.6803641.471017e-08
0.9276431.6802671.477863e-08
0.9319581.680171.484741e-08
0.9362931.6800741.491651e-08
0.9406481.6799791.498593e-08
0.9450231.6798841.505567e-08
0.9494191.6797891.512573e-08
0.951.6797761.513500e-08
0.9538351.6796941.519605e-08
0.9582711.67961.526668e-08
0.9627291.6795071.533764e-08
0.9672071.6794131.540893e-08
0.9717051.679321.548055e-08
0.9762251.6792281.555250e-08
0.9807661.6791351.562479e-08
0.9853281.6790441.569742e-08
0.9899111.6789521.577038e-08
0.9945151.6788611.584368e-08
0.9991411.6787691.591732e-08
11.6787531.593100e-08
1.003791.6786791.599136e-08
1.008461.6785881.606575e-08
1.013151.6784981.614049e-08
1.017861.6784081.621558e-08
1.022591.6783181.629101e-08
1.027351.6782291.636680e-08
1.032131.678141.644293e-08
1.036931.6780511.651943e-08
1.041751.6779621.659628e-08
1.04661.6778731.667348e-08
1.051471.6777851.675105e-08
1.056361.6776971.682897e-08
1.061.6776321.688700e-08
1.061271.6776091.682040e-08
1.066211.6775211.656185e-08
1.071171.6774331.630209e-08
1.076151.6773461.604113e-08
1.081151.6772591.577895e-08
1.086181.6771711.551555e-08
1.091241.6770841.525093e-08
1.096311.6769981.498507e-08
1.101411.6769111.471798e-08
1.106531.6768241.444965e-08
1.111681.6767381.418007e-08
1.116851.6766511.390923e-08
1.122051.6765651.363714e-08
1.127271.6764781.336378e-08
1.132511.6763921.308914e-08
1.137781.6763061.281323e-08
1.143071.676221.253604e-08
1.148391.6761341.225756e-08
1.153731.6760481.197778e-08
1.159091.6759621.169670e-08
1.164481.6758761.141432e-08
1.16991.675791.113062e-08
1.175341.6757041.084560e-08
1.180811.6756181.055925e-08
1.18631.6755321.027158e-08
1.191821.6754469.982562e-09
1.197361.675369.692203e-09
1.21.6753199.554100e-09
1.202931.6752749.904831e-09
1.208531.6751881.057399e-08
1.214151.6751021.124626e-08
1.21981.6750161.192166e-08
1.225471.674931.260020e-08
1.231171.6748431.328190e-08
1.23691.6747571.396677e-08
1.242651.6746711.465482e-08
1.248431.6745841.534607e-08
1.254241.6744971.604054e-08
1.260071.6744111.673824e-08
1.265931.6743241.743918e-08
1.271821.6742371.814339e-08
1.277741.674151.885087e-08
1.283681.6740621.956164e-08
1.289651.6739752.027572e-08
1.295651.6738872.099311e-08
1.301671.6737992.171385e-08
1.307731.6737112.243794e-08
1.313811.6736232.316539e-08
1.319921.6735352.389623e-08
1.326061.6734462.463047e-08
1.332231.6733582.536812e-08
1.338431.6732692.610921e-08
1.344651.6731792.685374e-08
1.350911.673092.760173e-08
1.357191.6732.835321e-08
1.36351.672912.910817e-08
1.369851.672822.986666e-08
1.376221.672733.062866e-08
1.382621.6726393.139422e-08
1.389051.6725483.216333e-08
1.395511.6724573.293602e-08
1.41.6723933.347300e-08
1.4021.6723653.390472e-08
1.408521.6722733.531170e-08
1.415071.6721813.672522e-08
1.421661.6720883.814531e-08
1.428271.6719953.957201e-08
1.434911.6719024.100535e-08
1.441591.6718084.244535e-08
1.448291.6717144.389205e-08
1.455031.671624.534548e-08
1.46181.6715254.680567e-08
1.468591.671434.827265e-08
1.475431.6713344.974645e-08
1.482291.6712385.122711e-08
1.489181.6711425.271466e-08
1.496111.6710455.420913e-08
1.503071.6709485.571055e-08
1.510061.670855.721895e-08
1.517081.6707525.873436e-08
1.524141.6706536.025683e-08
1.531231.6705546.178638e-08
1.538351.6704556.332304e-08
1.545511.6703556.486685e-08
1.55271.6702546.641784e-08
1.559921.6701536.797604e-08
1.567171.6700516.954149e-08
1.574461.6699497.111423e-08
1.581791.6698467.269428e-08
1.589141.6697437.428167e-08
1.596541.6696397.587646e-08
1.61.6695917.662400e-08
1.603961.6695357.767127e-08
1.611421.669437.964369e-08
1.618921.6693248.162529e-08
1.626451.6692188.361610e-08
1.634011.6691118.561617e-08
1.641611.6690048.762555e-08
1.649251.6688968.964427e-08
1.656921.6687879.167238e-08
1.664631.6686779.370992e-08
1.672371.6685679.575695e-08
1.680151.6684579.781349e-08
1.687961.6683459.987960e-08
1.695811.6682331.019553e-07
1.70371.668121.040407e-07
1.711631.6680061.061358e-07
1.719591.6678921.082406e-07
1.727591.6677771.103552e-07
1.735621.6676611.124796e-07
1.743691.6675451.146140e-07
1.751811.6674271.167582e-07
1.759951.6673091.189124e-07
1.768141.667191.210767e-07
1.776361.667071.232510e-07
1.784631.6669491.254354e-07
1.792931.6668281.276300e-07
1.81.6667241.295000e-07
1.801271.6667051.308189e-07
1.809641.6665821.395440e-07
1.818061.6664581.483097e-07
1.826521.6663331.571162e-07
1.835011.6662071.659637e-07
1.843551.666081.748523e-07
1.852121.6659531.837823e-07
1.860741.6658241.927538e-07
1.869391.6656942.017670e-07
1.878091.6655632.108222e-07
1.886821.6654322.199194e-07
1.89561.6652992.290590e-07
1.904421.6651652.382411e-07
1.913281.6650312.474659e-07
1.922181.6648952.567336e-07
1.931121.6647582.660444e-07
1.94011.664622.753986e-07
1.949121.6644812.847962e-07
1.958191.6643412.942375e-07
1.96731.66423.037228e-07
1.976451.6640583.132522e-07
1.985641.6639143.228259e-07
1.994881.663773.324441e-07
21.6636893.377800e-07
2.004161.6636243.524935e-07
2.013481.6634773.855036e-07
2.022841.6633294.186672e-07
2.032251.6631794.519851e-07
2.04171.6630294.854580e-07
2.05121.6628775.190865e-07
2.060741.6627235.528715e-07
2.070331.6625695.868136e-07
2.079961.6624136.209136e-07
2.089631.6622566.551722e-07
2.099351.6620986.895901e-07
2.109121.6619387.241682e-07
2.118931.6617777.589070e-07
2.128781.6616147.938075e-07
2.138681.661458.288703e-07
2.148631.6612848.640961e-07
2.158621.6611188.994859e-07
2.168671.6609499.350402e-07
2.178751.6607799.707599e-07
2.188891.6606081.006646e-06
2.199071.6604351.042699e-06
2.21.6604191.046000e-06
2.20931.6602611.189939e-06
2.219571.6600851.349050e-06
2.22991.6599071.508901e-06
2.240271.6597281.669495e-06
2.250691.6595471.830837e-06
2.261161.6593651.992929e-06
2.271671.6591812.155775e-06
2.282241.6589952.319378e-06
2.292861.6588072.483743e-06
2.303521.6586182.648872e-06
2.314241.6584272.814769e-06
2.3251.6582342.981438e-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
—