Optical constants

Refractive index of H-LAK53B (CDGM)

H-LAK53B: 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
1.755
Extinction coefficient k
1.04495e-08
Permittivity ε1
3.08001
Permittivity ε2
3.66777e-08
Absorption coefficient α
0.00223472 cm⁻¹
Penetration depth δ = λ/(2πk)
8.94966e+09 nm
Abbe number Vd
52.322
Chromatic dispersion dn/dλ
-0.0743888 µm⁻¹
Group index ng
1.79871
Group velocity dispersion
131.769 fs²/mm
Dispersion parameter D
-718.868 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-LAK53B (CDGM): H-LAK53B
cdgm_h_lak53b = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-LAK53B", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_lak53b.range_nm)  # (302, 2325) nm
eps = cdgm_h_lak53b.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=1.0314122λ2λ2−0.00395421648+0.985282193λ2λ2−0.0186863118+1.17066017λ2λ2−81.1326753

Valid from 0.302 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.0314122
C30.00395421648
C40.985282193
C50.0186863118
C61.17066017
C781.1326753

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 1.22e-06 1.66e-08 -2.94e-11 5.17e-07 4.19e-10 0.196
nd
1.755000
Vd
52.322058
glass code
755523
glass status
standard
density
value: 4220
thermal expansion
value: 5.7e-06, temperature range: 243 343; value: 7.3e-06, temperature range: 293 573
dPgF
-0.0091
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 1.56e-06 K⁻¹ at 633 nm, dn/dT = 8.84e-07 K⁻¹ at 1310 nm, dn/dT = 8.28e-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-LAK53B (CDGM), H-LAK53B: n and k versus wavelength
λ (µm)nk
0.3021.8209914.123620e-06
0.3035491.819963.997020e-06
0.3051061.8189443.869771e-06
0.306671.8179433.741869e-06
0.3082431.8169553.613312e-06
0.3098241.8159813.484095e-06
0.311.8158743.469700e-06
0.3114131.815023.312762e-06
0.313011.8140733.135358e-06
0.3146151.8131392.957044e-06
0.3162291.8122182.777815e-06
0.317851.8113092.597668e-06
0.3194811.8104132.416596e-06
0.321.8101312.358900e-06
0.3211191.8095292.277097e-06
0.3227661.8086572.156712e-06
0.3244211.8077972.035708e-06
0.3260851.8069481.914085e-06
0.3277571.8061111.791837e-06
0.3294381.8052851.668963e-06
0.331.8050121.627900e-06
0.3311281.804471.566503e-06
0.3328261.8036651.474053e-06
0.3345331.8028721.381129e-06
0.3362491.8020891.287729e-06
0.3379731.8013161.193850e-06
0.3397061.8005531.099489e-06
0.341.8004251.083500e-06
0.3414481.79981.027830e-06
0.34321.7990579.605292e-07
0.344961.7983248.928831e-07
0.3467291.79768.248900e-07
0.3485071.7968857.565483e-07
0.351.7962956.991700e-07
0.3502941.796186.916021e-07
0.3520911.7954846.454179e-07
0.3538971.7947975.989969e-07
0.3557121.7941185.523378e-07
0.3575361.7934485.054394e-07
0.3593691.7927874.583005e-07
0.361.7925624.420900e-07
0.3612121.7921334.213725e-07
0.3630651.7914893.897192e-07
0.3649271.7908523.579034e-07
0.3667981.7902233.259245e-07
0.368681.7896022.937816e-07
0.371.7891732.712200e-07
0.370571.7889892.653251e-07
0.3724711.7883832.456837e-07
0.3743811.7877852.259415e-07
0.3763011.7871952.060981e-07
0.3782311.7866111.861530e-07
0.381.7860851.678700e-07
0.3801711.7860351.670567e-07
0.382121.7854661.577682e-07
0.384081.7849041.484322e-07
0.386051.7843481.390482e-07
0.388031.78381.296162e-07
0.391.7832631.202300e-07
0.390021.7832581.201710e-07
0.392021.7827221.142039e-07
0.394031.7821931.082062e-07
0.3960511.7816711.021778e-07
0.3980821.7811559.611847e-08
0.41.7806759.039800e-08
0.4001241.7806449.019282e-08
0.4021761.780148.679761e-08
0.4042391.7796428.338499e-08
0.4063121.779157.995487e-08
0.4083961.7786647.650716e-08
0.410491.7781847.304177e-08
0.4125951.7777096.955860e-08
0.4147111.7772396.605757e-08
0.4168381.7767766.253859e-08
0.4189761.7763175.900156e-08
0.421.77615.730700e-08
0.4211251.7758645.686050e-08
0.4232841.7754175.600297e-08
0.4254551.7749745.514105e-08
0.4276371.7745375.427470e-08
0.429831.7741045.340392e-08
0.4320351.7736775.252866e-08
0.434251.7732555.164892e-08
0.4364771.7728375.076467e-08
0.4387161.7724244.987588e-08
0.441.772194.936600e-08
0.4409661.7720164.822385e-08
0.4432271.7716134.554940e-08
0.44551.7712144.286124e-08
0.4477851.7708194.015929e-08
0.4500821.770433.744348e-08
0.452391.7700443.471374e-08
0.454711.7696633.197000e-08
0.4570421.7692862.921220e-08
0.4593861.7689132.644025e-08
0.461.7688172.571400e-08
0.4617421.7685452.547650e-08
0.464111.768182.515361e-08
0.466491.767822.482907e-08
0.4688831.7674642.450287e-08
0.4712871.7671112.417499e-08
0.4737041.7667632.384544e-08
0.4761341.7664182.351419e-08
0.4785751.7660772.318124e-08
0.481.7658812.298700e-08
0.481031.765742.241895e-08
0.4834971.7654062.105817e-08
0.4859761.7650761.969041e-08
0.4884691.764751.831564e-08
0.4909741.7644271.693382e-08
0.4934921.7641081.554491e-08
0.4960231.7637921.414887e-08
0.4985671.7634791.274568e-08
0.51.7633061.195500e-08
0.5011231.763171.198185e-08
0.5036931.7628641.204327e-08
0.5062771.7625621.210501e-08
0.5088731.7622621.216707e-08
0.5114831.7619661.222944e-08
0.5141061.7616731.229213e-08
0.5167431.7613831.235515e-08
0.5193931.7610961.241849e-08
0.5220561.7608121.248215e-08
0.5247341.7605311.254614e-08
0.5274251.7602531.261046e-08
0.530131.7599781.267510e-08
0.5328491.7597061.274008e-08
0.5355811.7594361.280540e-08
0.5383281.7591691.287104e-08
0.5410891.7589051.293703e-08
0.5438641.7586441.300335e-08
0.5466531.7583851.307001e-08
0.5494571.7581291.313701e-08
0.551.758081.315000e-08
0.5522751.7578761.298664e-08
0.5551071.7576251.278321e-08
0.5579541.7573761.257874e-08
0.5608151.7571311.237323e-08
0.5636911.7568871.216666e-08
0.5665821.7566461.195903e-08
0.5694881.7564071.175033e-08
0.5724091.7561711.154057e-08
0.5753441.7559371.132972e-08
0.5782951.7557061.111780e-08
0.5812611.7554761.090479e-08
0.5842421.7552491.069069e-08
0.5872381.7550241.047549e-08
0.590251.7548011.025919e-08
0.5932771.7545811.004177e-08
0.5963191.7543629.823247e-09
0.5993781.7541469.603599e-09
0.61.7541029.558900e-09
0.6024521.7539319.597934e-09
0.6055411.7537199.647128e-09
0.6086471.7535099.696574e-09
0.6117681.75339.746274e-09
0.6149061.7530949.796228e-09
0.6180591.7528899.846439e-09
0.6212291.7526879.896908e-09
0.6244151.7524869.947635e-09
0.6276171.7522879.998622e-09
0.6308361.752091.004987e-08
0.6340711.7518951.010138e-08
0.6373231.7517011.015316e-08
0.6405921.751511.020520e-08
0.6438771.7513191.025751e-08
0.6471791.7511311.031008e-08
0.651.7509721.035500e-08
0.6504981.7509441.036294e-08
0.6538341.7507591.041612e-08
0.6571871.7505761.046957e-08
0.6605581.7503941.052329e-08
0.6639451.7502141.057729e-08
0.6673511.7500351.063157e-08
0.6707731.7498581.068612e-08
0.6742131.7496831.074096e-08
0.6776711.7495081.079607e-08
0.6811461.7493361.085147e-08
0.684641.7491651.090715e-08
0.6881511.7489951.096312e-08
0.691681.7488261.101938e-08
0.6952271.7486591.107592e-08
0.6987931.7484941.113276e-08
0.71.7484381.115200e-08
0.7023761.7483291.118986e-08
0.7059791.7481671.124724e-08
0.7095991.7480051.130492e-08
0.7132381.7478441.136289e-08
0.7168961.7476851.142116e-08
0.7205731.7475271.147973e-08
0.7242681.7473711.153860e-08
0.7279831.7472151.159777e-08
0.7317161.7470611.165724e-08
0.7354691.7469081.171702e-08
0.7392411.7467561.177711e-08
0.7430321.7466051.183750e-08
0.7468431.7464561.189820e-08
0.7506731.7463071.195922e-08
0.7545231.746161.202055e-08
0.7583921.7460131.208219e-08
0.7622821.7458681.214415e-08
0.7661911.7457231.220642e-08
0.770121.745581.226902e-08
0.774071.7454381.233194e-08
0.778041.7452961.239517e-08
0.782031.7451561.245874e-08
0.7860411.7450161.252263e-08
0.7900721.7448781.258685e-08
0.7941241.744741.265139e-08
0.7981961.7446031.271627e-08
0.81.7445431.274500e-08
0.802291.7444681.278150e-08
0.8064051.7443321.284709e-08
0.810541.7441981.291301e-08
0.8146971.7440651.297927e-08
0.8188751.7439321.304587e-08
0.8230751.7438011.311281e-08
0.8272961.743671.318010e-08
0.8315391.743541.324773e-08
0.8358031.743411.331571e-08
0.840091.7432811.338403e-08
0.8443981.7431531.345271e-08
0.8487291.7430261.352174e-08
0.851.7429891.354200e-08
0.8530821.74291.359106e-08
0.8574571.7427741.366071e-08
0.8618541.7426491.373072e-08
0.8662741.7425241.380108e-08
0.8707171.74241.387181e-08
0.8751821.7422771.394290e-08
0.8796711.7421541.401436e-08
0.8841821.7420321.408618e-08
0.8887171.741911.415837e-08
0.8932741.7417891.423093e-08
0.8978561.7416691.430386e-08
0.91.7416131.433800e-08
0.902461.7415491.437722e-08
0.9070881.741431.445099e-08
0.9117411.7413111.452514e-08
0.9164161.7411921.459968e-08
0.9211161.7410751.467459e-08
0.925841.7409571.474989e-08
0.9305881.740841.482558e-08
0.9353611.7407241.490165e-08
0.9401581.7406081.497812e-08
0.944981.7404921.505497e-08
0.9498261.7403771.513222e-08
0.951.7403721.513500e-08
0.9546971.7402621.520978e-08
0.9595931.7401471.528772e-08
0.9645151.7400331.536607e-08
0.9694611.7399191.544482e-08
0.9744331.7398061.552397e-08
0.979431.7396931.560353e-08
0.9844531.739581.568350e-08
0.9895021.7394671.576387e-08
0.9945771.7393551.584466e-08
0.9996781.7392431.592587e-08
11.7392361.593100e-08
1.00481.7391311.600755e-08
1.009961.739021.608966e-08
1.015141.7389091.617219e-08
1.020341.7387981.625514e-08
1.025581.7386871.633851e-08
1.030841.7385761.642232e-08
1.036121.7384661.650655e-08
1.041441.7383561.659122e-08
1.046781.7382451.667632e-08
1.052151.7381351.676185e-08
1.057541.7380261.684783e-08
1.061.7379761.688700e-08
1.062971.7379161.693425e-08
1.068421.7378061.702113e-08
1.07391.7376971.710844e-08
1.07941.7375871.719621e-08
1.084941.7374781.728443e-08
1.09051.7373691.737309e-08
1.09611.737261.746222e-08
1.101721.737151.755180e-08
1.107371.7370411.764184e-08
1.113051.7369321.773234e-08
1.118761.7368231.782330e-08
1.124491.7367141.791474e-08
1.130261.7366051.800664e-08
1.136061.7364951.809901e-08
1.141881.7363861.819185e-08
1.147741.7362771.828518e-08
1.153621.7361671.837898e-08
1.159541.7360581.847326e-08
1.165491.7359481.856802e-08
1.171471.7358381.866328e-08
1.177471.7357281.875902e-08
1.183511.7356181.885525e-08
1.189581.7355081.895197e-08
1.195681.7353981.904919e-08
1.21.735321.911800e-08
1.201811.7352871.934963e-08
1.207981.7351762.013655e-08
1.214171.7350662.092752e-08
1.22041.7349542.172254e-08
1.226661.7348432.252164e-08
1.232951.7347312.332483e-08
1.239271.734622.413215e-08
1.245631.7345072.494360e-08
1.252021.7343952.575922e-08
1.258441.7342822.657902e-08
1.264891.7341692.740302e-08
1.271381.7340562.823125e-08
1.27791.7339422.906373e-08
1.284451.7338282.990047e-08
1.291041.7337143.074151e-08
1.297661.7335993.158686e-08
1.304321.7334843.243655e-08
1.311011.7333693.329059e-08
1.317731.7332533.414902e-08
1.324491.7331363.501184e-08
1.331281.7330193.587910e-08
1.338111.7329023.675080e-08
1.344971.7327843.762697e-08
1.351871.7326663.850763e-08
1.35881.7325473.939281e-08
1.365771.7324284.028253e-08
1.372771.7323084.117681e-08
1.379811.7321884.207568e-08
1.386891.7320674.297916e-08
1.3941.7319464.388727e-08
1.41.7318444.465300e-08
1.401151.7318244.468973e-08
1.408341.7317014.491892e-08
1.415561.7315784.514929e-08
1.422821.7314544.538084e-08
1.430121.731334.561358e-08
1.437451.7312054.584751e-08
1.444821.7310794.608264e-08
1.452231.7309534.631897e-08
1.459681.7308264.655652e-08
1.467171.7306984.679529e-08
1.474691.7305694.703528e-08
1.482251.730444.727650e-08
1.489861.730314.751896e-08
1.49751.7301794.776266e-08
1.505181.7300474.800761e-08
1.51291.7299154.825382e-08
1.520651.7297814.850129e-08
1.528451.7296474.875003e-08
1.536291.7295124.900004e-08
1.544171.7293764.925134e-08
1.552091.729244.950393e-08
1.560051.7291024.975781e-08
1.568051.7289635.001299e-08
1.576091.7288245.026948e-08
1.584181.7286835.052729e-08
1.59231.7285425.078642e-08
1.61.7284085.103200e-08
1.600471.72845.135016e-08
1.608671.7282565.694795e-08
1.616921.7281126.257444e-08
1.625221.7279666.822979e-08
1.633551.7278197.391414e-08
1.641931.7276727.962765e-08
1.650351.7275238.537046e-08
1.658811.7273739.114272e-08
1.667321.7272229.694458e-08
1.675871.727071.027762e-07
1.684471.7269171.086377e-07
1.693111.7267621.145293e-07
1.701791.7266061.204511e-07
1.710521.7264491.264033e-07
1.719291.7262911.323860e-07
1.728111.7261311.383994e-07
1.736971.725971.444436e-07
1.745881.7258081.505188e-07
1.754831.7256451.566252e-07
1.763831.725481.627629e-07
1.772881.7253141.689320e-07
1.781971.7251461.751328e-07
1.791111.7249771.813654e-07
1.81.7248121.874300e-07
1.800291.7248061.880835e-07
1.809531.7246342.086589e-07
1.818811.7244612.293398e-07
1.828131.7242862.501267e-07
1.837511.7241092.710203e-07
1.846931.7239312.920210e-07
1.856411.7237513.131294e-07
1.865931.723573.343461e-07
1.87551.7233873.556715e-07
1.885111.7232033.771064e-07
1.894781.7230163.986512e-07
1.90451.7228284.203064e-07
1.914271.7226394.420728e-07
1.924081.7224474.639507e-07
1.933951.7222544.859409e-07
1.943871.7220595.080438e-07
1.953841.7218625.302601e-07
1.963861.7216635.525903e-07
1.973931.7214625.750350e-07
1.984051.721265.975949e-07
1.994231.7210556.202704e-07
21.7209396.331300e-07
2.004461.7208496.636103e-07
2.014741.720647.339129e-07
2.025071.720438.045761e-07
2.035461.7202178.756017e-07
2.045891.7200029.469915e-07
2.056391.7197851.018747e-06
2.066931.7195661.090871e-06
2.077531.7193451.163365e-06
2.088191.7191221.236231e-06
2.09891.7188961.309470e-06
2.109661.7186681.383085e-06
2.120481.7184381.457077e-06
2.131361.7182051.531449e-06
2.142291.717971.606203e-06
2.153271.7177331.681339e-06
2.164321.7174931.756861e-06
2.175421.717251.832771e-06
2.186571.7170061.909070e-06
2.197791.7167581.985759e-06
2.21.7167092.000900e-06
2.209061.7165082.297641e-06
2.220391.7162552.668808e-06
2.231771.7163.041878e-06
2.243221.7157423.416862e-06
2.254721.7154813.793769e-06
2.266291.7152174.172608e-06
2.277911.7149514.553391e-06
2.289591.7146824.936126e-06
2.301331.7144095.320825e-06
2.313141.7141345.707496e-06
2.3251.7138566.096150e-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
—