Optical constants

Refractive index of H-LAK10 (CDGM)

H-LAK10: n,k 0.302–2.325 µm

Data
formula 2 + tabulated k
Range
0.302–2.325 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.302–2.325 µm
Refractive index n
1.65113
Extinction coefficient k
2.92327e-08
Permittivity ε1
2.72622
Permittivity ε2
9.65339e-08
Absorption coefficient α
0.00625169 cm⁻¹
Penetration depth δ = λ/(2πk)
3.19914e+09 nm
Abbe number Vd
55.891
Chromatic dispersion dn/dλ
-0.0600509 µm⁻¹
Group index ng
1.68641
Group velocity dispersion
106.771 fs²/mm
Dispersion parameter D
-582.493 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-LAK10 (CDGM): H-LAK10
cdgm_h_lak10 = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAK10", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_lak10.range_nm)  # (302, 2325) nm
eps = cdgm_h_lak10.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=0.783174579λ2λ2−0.0027316949+0.894315049λ2λ2−0.0169034325+1.138969λ2λ2−111.158589

Valid from 0.302 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C20.783174579
C30.0027316949
C40.894315049
C50.0169034325
C61.138969
C7111.158589

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -9.18e-07 1.25e-08 -2.28e-11 4.91e-07 6.43e-10 0.189
nd
1.651130
Vd
55.890872
glass code
651559
density
value: 3730
thermal expansion
value: 7.1e-06, temperature range: 243 343; value: 8.4e-06, temperature range: 293 573
dPgF
-0.003
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 2.23e-07 K⁻¹ at 633 nm, dn/dT = -3.20e-07 K⁻¹ at 1310 nm, dn/dT = -3.62e-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 431 wavelengths, the same grid as the API and the library
H-LAK10 (CDGM), H-LAK10: n and k versus wavelength
λ (µm)nk
0.3021.7041694.063100e-06
0.3035491.7033483.702304e-06
0.3051061.7025383.339658e-06
0.306671.7017392.975152e-06
0.3082431.700952.608777e-06
0.3098241.7001732.240523e-06
0.311.7000872.199500e-06
0.3114131.6994062.049316e-06
0.313011.698651.879546e-06
0.3146151.6979041.708905e-06
0.3162291.6971681.537389e-06
0.317851.6964421.364993e-06
0.3194811.6957251.191713e-06
0.321.69551.136500e-06
0.3211191.6950181.078591e-06
0.3227661.6943219.933695e-07
0.3244211.6936329.077105e-07
0.3260851.6929538.216122e-07
0.3277571.6922837.350724e-07
0.3294381.6916226.480887e-07
0.331.6914036.190200e-07
0.3311281.6909695.917015e-07
0.3328261.6903255.505661e-07
0.3345331.6896895.092198e-07
0.3362491.6890614.676614e-07
0.3379731.6884424.258899e-07
0.3397061.687833.839042e-07
0.341.6877283.767900e-07
0.3414481.6872273.571687e-07
0.34321.6866313.334480e-07
0.344961.6860433.096056e-07
0.3467291.6854622.856410e-07
0.3485071.6848892.615534e-07
0.351.6844152.413300e-07
0.3502941.6843222.390859e-07
0.3520911.6837642.253913e-07
0.3538971.6832122.116264e-07
0.3557121.6826671.977910e-07
0.3575361.6821291.838845e-07
0.3593691.6815971.699068e-07
0.361.6814171.651000e-07
0.3612121.6810731.596548e-07
0.3630651.6805541.513353e-07
0.3649271.6800431.429731e-07
0.3667981.6795371.345681e-07
0.368681.6790381.261199e-07
0.371.6786931.201900e-07
0.370571.6785451.185882e-07
0.3724711.6780581.132511e-07
0.3743811.6775771.078866e-07
0.3763011.6771021.024946e-07
0.3782311.6766329.707498e-08
0.381.6762099.210700e-08
0.3801711.6761699.187595e-08
0.382121.6757118.923741e-08
0.384081.6752588.658533e-08
0.386051.6748118.391966e-08
0.388031.674378.124031e-08
0.391.6739387.857400e-08
0.390021.6739337.855220e-08
0.392021.6735027.634855e-08
0.394031.6730767.413361e-08
0.3960511.6726557.190730e-08
0.3980821.6722396.966958e-08
0.41.6718536.755700e-08
0.4001241.6718286.751454e-08
0.4021761.6714226.681192e-08
0.4042391.6710216.610570e-08
0.4063121.6706256.539585e-08
0.4083961.6702336.468237e-08
0.410491.6698456.396522e-08
0.4125951.6694636.324440e-08
0.4147111.6690846.251988e-08
0.4168381.668716.179165e-08
0.4189761.6683416.105968e-08
0.421.6681666.070900e-08
0.4211251.6679766.067116e-08
0.4232841.6676146.059848e-08
0.4254551.6672586.052544e-08
0.4276371.6669056.045201e-08
0.429831.6665566.037821e-08
0.4320351.6662116.030404e-08
0.434251.6658716.022948e-08
0.4364771.6655346.015454e-08
0.4387161.6652016.007921e-08
0.441.6650126.003600e-08
0.4409661.6648715.962911e-08
0.4432271.6645465.867634e-08
0.44551.6642245.771869e-08
0.4477851.6639055.675612e-08
0.4500821.6635915.578861e-08
0.452391.663285.481615e-08
0.454711.6629725.383869e-08
0.4570421.6626685.285623e-08
0.4593861.6623675.186872e-08
0.461.6622895.161000e-08
0.4617421.6620695.113134e-08
0.464111.6617755.048060e-08
0.466491.6614844.982652e-08
0.4688831.6611964.916909e-08
0.4712871.6609124.850828e-08
0.4737041.660634.784409e-08
0.4761341.6603524.717649e-08
0.4785751.6600774.650547e-08
0.481.6599184.611400e-08
0.481031.6598044.579862e-08
0.4834971.6595354.504311e-08
0.4859761.6592684.428372e-08
0.4884691.6590054.352045e-08
0.4909741.6587444.275325e-08
0.4934921.6584864.198213e-08
0.4960231.6582314.120704e-08
0.4985671.6579794.042799e-08
0.51.6578383.998900e-08
0.5011231.6577293.978129e-08
0.5036931.6574823.930615e-08
0.5062771.6572373.882856e-08
0.5088731.6569963.834853e-08
0.5114831.6567563.786604e-08
0.5141061.656523.738107e-08
0.5167431.6562853.689362e-08
0.5193931.6560533.640366e-08
0.5220561.6558243.591120e-08
0.5247341.6555973.541620e-08
0.5274251.6553723.491867e-08
0.530131.655153.441859e-08
0.5328491.654933.391594e-08
0.5355811.6547123.341071e-08
0.5383281.6544973.290290e-08
0.5410891.6542843.239248e-08
0.5438641.6540733.187944e-08
0.5466531.6538643.136377e-08
0.5494571.6536573.084545e-08
0.551.6536173.074500e-08
0.5522751.6534523.065352e-08
0.5551071.653253.053960e-08
0.5579541.6530493.042510e-08
0.5608151.652853.031001e-08
0.5636911.6526543.019433e-08
0.5665821.6524593.007806e-08
0.5694881.6522662.996119e-08
0.5724091.6520762.984372e-08
0.5753441.6518872.972565e-08
0.5782951.65172.960698e-08
0.5812611.6515152.948769e-08
0.5842421.6513312.936780e-08
0.5872381.651152.924729e-08
0.590251.650972.912616e-08
0.5932771.6507922.900441e-08
0.5963191.6506152.888203e-08
0.5993781.6504412.875903e-08
0.61.6504052.873400e-08
0.6024521.6502682.885143e-08
0.6055411.6500962.899943e-08
0.6086471.6499262.914818e-08
0.6117681.6497582.929770e-08
0.6149061.6495922.944798e-08
0.6180591.6494272.959904e-08
0.6212291.6492632.975087e-08
0.6244151.6491012.990348e-08
0.6276171.6489413.005687e-08
0.6308361.6487823.021105e-08
0.6340711.6486253.036601e-08
0.6373231.6484693.052178e-08
0.6405921.6483143.067834e-08
0.6438771.6481613.083570e-08
0.6471791.6480093.099388e-08
0.651.6478813.112900e-08
0.6504981.6478593.109705e-08
0.6538341.6477093.088307e-08
0.6571871.6475623.066800e-08
0.6605581.6474153.045182e-08
0.6639451.647273.023454e-08
0.6673511.6471263.001614e-08
0.6707731.6469832.979662e-08
0.6742131.6468422.957597e-08
0.6776711.6467022.935419e-08
0.6811461.6465632.913128e-08
0.684641.6464252.890722e-08
0.6881511.6462882.868201e-08
0.691681.6461532.845565e-08
0.6952271.6460182.822813e-08
0.6987931.6458852.799944e-08
0.71.645842.792200e-08
0.7023761.6457532.771299e-08
0.7059791.6456222.739618e-08
0.7095991.6454922.707775e-08
0.7132381.6453632.675768e-08
0.7168961.6452352.643597e-08
0.7205731.6451082.611261e-08
0.7242681.6449822.578760e-08
0.7279831.6448572.546091e-08
0.7317161.6447342.513255e-08
0.7354691.6446112.480251e-08
0.7392411.6444892.447078e-08
0.7430321.6443682.413734e-08
0.7468431.6442472.380219e-08
0.7506731.6441282.346533e-08
0.7545231.644012.312673e-08
0.7583921.6438922.278640e-08
0.7622821.6437762.244433e-08
0.7661911.643662.210050e-08
0.770121.6435452.175491e-08
0.774071.6434312.140754e-08
0.778041.6433182.105840e-08
0.782031.6432052.070746e-08
0.7860411.6430942.035472e-08
0.7900721.6429832.000018e-08
0.7941241.6428721.964381e-08
0.7981961.6427631.928562e-08
0.81.6427151.912700e-08
0.802291.6426541.887120e-08
0.8064051.6425461.841161e-08
0.810541.6424391.794965e-08
0.8146971.6423321.748533e-08
0.8188751.6422261.701863e-08
0.8230751.6421211.654953e-08
0.8272961.6420171.607803e-08
0.8315391.6419131.560411e-08
0.8358031.6418091.512776e-08
0.840091.6417071.464896e-08
0.8443981.6416041.416771e-08
0.8487291.6415031.368399e-08
0.851.6414731.354200e-08
0.8530821.6414021.359106e-08
0.8574571.6413021.366071e-08
0.8618541.6412021.373072e-08
0.8662741.6411031.380108e-08
0.8707171.6410041.387181e-08
0.8751821.6409061.394290e-08
0.8796711.6408081.401436e-08
0.8841821.6407111.408618e-08
0.8887171.6406141.415837e-08
0.8932741.6405181.423093e-08
0.8978561.6404221.430386e-08
0.91.6403781.433800e-08
0.902461.6403271.437722e-08
0.9070881.6402321.445099e-08
0.9117411.6401381.452514e-08
0.9164161.6400441.459968e-08
0.9211161.6399511.467459e-08
0.925841.6398581.474989e-08
0.9305881.6397651.482558e-08
0.9353611.6396721.490165e-08
0.9401581.6395811.497812e-08
0.944981.6394891.505497e-08
0.9498261.6393981.513222e-08
0.951.6393941.513500e-08
0.9546971.6393071.520978e-08
0.9595931.6392161.528772e-08
0.9645151.6391261.536607e-08
0.9694611.6390361.544482e-08
0.9744331.6389461.552397e-08
0.979431.6388571.560353e-08
0.9844531.6387681.568350e-08
0.9895021.6386791.576387e-08
0.9945771.6385911.584466e-08
0.9996781.6385031.592587e-08
11.6384971.593100e-08
1.00481.6384151.600755e-08
1.009961.6383271.608966e-08
1.015141.6382391.617219e-08
1.020341.6381521.625514e-08
1.025581.6380651.633851e-08
1.030841.6379781.642232e-08
1.036121.6378911.650655e-08
1.041441.6378041.659122e-08
1.046781.6377181.667632e-08
1.052151.6376321.676185e-08
1.057541.6375461.684783e-08
1.061.6375061.688700e-08
1.062971.637461.693425e-08
1.068421.6373741.702113e-08
1.07391.6372881.710844e-08
1.07941.6372021.719621e-08
1.084941.6371171.728443e-08
1.09051.6370311.737309e-08
1.09611.6369461.746222e-08
1.101721.6368611.755180e-08
1.107371.6367751.764184e-08
1.113051.636691.773234e-08
1.118761.6366051.782330e-08
1.124491.636521.791474e-08
1.130261.6364351.800664e-08
1.136061.6363491.809901e-08
1.141881.6362641.819185e-08
1.147741.6361791.828518e-08
1.153621.6360941.837898e-08
1.159541.6360091.847326e-08
1.165491.6359241.856802e-08
1.171471.6358381.866328e-08
1.177471.6357531.875902e-08
1.183511.6356681.885525e-08
1.189581.6355821.895197e-08
1.195681.6354971.904919e-08
1.21.6354361.911800e-08
1.201811.6354111.914690e-08
1.207981.6353251.924509e-08
1.214171.635241.934377e-08
1.22041.6351541.944297e-08
1.226661.6350671.954267e-08
1.232951.6349811.964289e-08
1.239271.6348951.974361e-08
1.245631.6348081.984486e-08
1.252021.6347211.994662e-08
1.258441.6346352.004891e-08
1.264891.6345472.015172e-08
1.271381.634462.025506e-08
1.27791.6343732.035893e-08
1.284451.6342852.046333e-08
1.291041.6341972.056826e-08
1.297661.6341092.067374e-08
1.304321.634022.077975e-08
1.311011.6339312.088631e-08
1.317731.6338422.099342e-08
1.324491.6337532.110107e-08
1.331281.6336642.120928e-08
1.338111.6335742.131804e-08
1.344971.6334832.142736e-08
1.351871.6333932.153724e-08
1.35881.6333022.164769e-08
1.365771.6332112.175870e-08
1.372771.6331192.187028e-08
1.379811.6330272.198243e-08
1.386891.6329352.209515e-08
1.3941.6328422.220846e-08
1.41.6327642.230400e-08
1.401151.6327492.232235e-08
1.408341.6326562.243682e-08
1.415561.6325622.255187e-08
1.422821.6324682.266752e-08
1.430121.6323732.278376e-08
1.437451.6322782.290060e-08
1.444821.6321822.301803e-08
1.452231.6320862.313607e-08
1.459681.6319892.325472e-08
1.467171.6318922.337397e-08
1.474691.6317942.349383e-08
1.482251.6316962.361431e-08
1.489861.6315982.373541e-08
1.49751.6314982.385712e-08
1.505181.6313992.397946e-08
1.51291.6312982.410243e-08
1.520651.6311972.422603e-08
1.528451.6310962.435027e-08
1.536291.6309942.447514e-08
1.544171.6308912.460065e-08
1.552091.6307882.472680e-08
1.560051.6306842.485360e-08
1.568051.6305792.498105e-08
1.576091.6304742.510916e-08
1.584181.6303682.523792e-08
1.59231.6302612.536735e-08
1.61.630162.549000e-08
1.600471.6301542.569891e-08
1.608671.6300462.937446e-08
1.616921.6299373.306886e-08
1.625221.6298283.678220e-08
1.633551.6297174.051460e-08
1.641931.6296064.426613e-08
1.650351.6294954.803690e-08
1.658811.6293825.182701e-08
1.667321.6292695.563656e-08
1.675871.6291545.946565e-08
1.684471.6290396.331437e-08
1.693111.6289236.718283e-08
1.701791.6288077.107113e-08
1.710521.6286897.497937e-08
1.719291.6285717.890766e-08
1.728111.6284518.285609e-08
1.736971.6283318.682477e-08
1.745881.628219.081381e-08
1.754831.6280889.482330e-08
1.763831.6279649.885336e-08
1.772881.627841.029041e-07
1.781971.6277151.069756e-07
1.791111.6275891.110680e-07
1.81.6274661.150500e-07
1.800291.6274621.153528e-07
1.809531.6273341.248852e-07
1.818811.6272051.344665e-07
1.828131.6270741.440970e-07
1.837511.6269431.537769e-07
1.846931.6268111.635063e-07
1.856411.6266771.732857e-07
1.865931.6265421.831153e-07
1.87551.6264061.929952e-07
1.885111.6262692.029259e-07
1.894781.6261312.129074e-07
1.90451.6259922.229402e-07
1.914271.6258512.330244e-07
1.924081.6257092.431603e-07
1.933951.6255662.533482e-07
1.943871.6254222.635883e-07
1.953841.6252762.738810e-07
1.963861.6251292.842265e-07
1.973931.624982.946250e-07
1.984051.6248313.050768e-07
1.994231.624683.155822e-07
21.6245943.215400e-07
2.004461.6245273.393446e-07
2.014741.6243733.804107e-07
2.025071.6242184.216874e-07
2.035461.6240614.631758e-07
2.045891.6239035.048769e-07
2.056391.6237435.467920e-07
2.066931.6235825.889220e-07
2.077531.6234196.312680e-07
2.088191.6232556.738313e-07
2.09891.6230897.166128e-07
2.109661.6229227.596137e-07
2.120481.6227538.028351e-07
2.131361.6225828.462783e-07
2.142291.6224098.899442e-07
2.153271.6222359.338340e-07
2.164321.622069.779490e-07
2.175421.6218821.022290e-06
2.186571.6217031.066859e-06
2.197791.6215221.111656e-06
2.21.6214861.120500e-06
2.209061.6213391.225721e-06
2.220391.6211541.357332e-06
2.231771.6209671.489618e-06
2.243221.6207791.622583e-06
2.254721.6205891.756229e-06
2.266291.6203961.890561e-06
2.277911.6202022.025582e-06
2.289591.6200062.161295e-06
2.301331.6198082.297704e-06
2.313141.6196072.434813e-06
2.3251.6194052.572625e-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
—