Optical constants

Refractive index of H-ZLAF55C (CDGM)

H-ZLAF55C: 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
1.83481
Extinction coefficient k
1.29605e-08
Permittivity ε1
3.36651
Permittivity ε2
4.75600e-08
Absorption coefficient α
0.00277172 cm⁻¹
Penetration depth δ = λ/(2πk)
7.21573e+09 nm
Abbe number Vd
42.712
Chromatic dispersion dn/dλ
-0.0999339 µm⁻¹
Group index ng
1.89353
Group velocity dispersion
186.37 fs²/mm
Dispersion parameter D
-1016.75 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-ZLAF55C (CDGM): H-ZLAF55C
cdgm_h_zlaf55c = ls.fetch_refractiveindex("specs", "CDGM-optical", "H-ZLAF55C", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdgm_h_zlaf55c.range_nm)  # (365, 2325) nm
eps = cdgm_h_zlaf55c.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=1.89206469λ2λ2−0.00927969961+0.383013491λ2λ2−0.035625946+1.32100138λ2λ2−93.6667669

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.89206469
C30.00927969961
C40.383013491
C50.035625946
C61.32100138
C793.6667669

Comments and conditions

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: 1.91e-06 1.02e-08 -6.88e-11 7.48e-07 2.17e-10 0.194
nd
1.834810
Vd
42.711575
glass code
835427
density
value: 4730
thermal expansion
value: 6.2e-06, temperature range: 243 343; value: 7.8e-06, temperature range: 293 573
dPgF
-0.0081
resistance
climatic: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = 2.55e-06 K⁻¹ at 633 nm, dn/dT = 1.48e-06 K⁻¹ at 1310 nm, dn/dT = 1.39e-06 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-ZLAF55C (CDGM), H-ZLAF55C: n and k versus wavelength
λ (µm)nk
0.3651.8853819.156300e-07
0.3666981.8845388.441995e-07
0.3684031.8837057.724367e-07
0.371.8829397.052600e-07
0.3701171.8828837.023052e-07
0.3718381.8820726.588037e-07
0.3735681.8812716.150999e-07
0.3753061.880485.711928e-07
0.3770511.8796995.270814e-07
0.3788051.8789284.827649e-07
0.381.878414.525700e-07
0.3805671.8781674.448638e-07
0.3823371.8774154.208058e-07
0.3841161.8766733.966359e-07
0.3859021.875943.723535e-07
0.3876971.8752163.479582e-07
0.38951.8745013.234495e-07
0.391.8743053.166600e-07
0.3913121.8737943.049715e-07
0.3931321.8730972.887578e-07
0.3949611.8724082.724688e-07
0.3967981.8717272.561039e-07
0.3986441.8710542.396630e-07
0.41.8705672.275800e-07
0.4004981.870392.254850e-07
0.4023611.8697332.176452e-07
0.4042321.8690852.097689e-07
0.4061121.8684442.018561e-07
0.4080011.8678111.939064e-07
0.4098991.8671851.859197e-07
0.4118061.8665671.778958e-07
0.4137211.8659561.698347e-07
0.4156451.8653521.617361e-07
0.4175791.8647551.535997e-07
0.4195211.8641661.454256e-07
0.421.8640221.434100e-07
0.4214721.8635831.407037e-07
0.4234331.8630061.371005e-07
0.4254021.8624371.334805e-07
0.4273811.8618741.298437e-07
0.4293691.8613171.261899e-07
0.4313661.8607671.225192e-07
0.4333721.8602231.188314e-07
0.4353881.8596861.151264e-07
0.4374131.8591541.114042e-07
0.4394481.8586291.076647e-07
0.441.8584871.066500e-07
0.4414921.8581091.039324e-07
0.4435451.8575951.001919e-07
0.4456091.8570879.643405e-08
0.4476811.8565859.265868e-08
0.4497641.8560888.886575e-08
0.4518561.8555978.505517e-08
0.4539571.8551118.122687e-08
0.4560691.854637.738076e-08
0.458191.8541557.351677e-08
0.461.8537567.022000e-08
0.4603211.8536856.989490e-08
0.4624621.8532216.772832e-08
0.4646131.8527616.555165e-08
0.4667751.8523066.336487e-08
0.4689461.8518566.116791e-08
0.4711271.8514125.896073e-08
0.4733181.8509715.674329e-08
0.475521.8505365.451553e-08
0.4777321.8501055.227741e-08
0.4799541.8496795.002888e-08
0.481.8496714.998200e-08
0.4821861.8492584.713603e-08
0.4844291.8488414.421623e-08
0.4866821.8484284.128285e-08
0.4889461.848023.833583e-08
0.491221.8476163.537510e-08
0.4935051.8472173.240060e-08
0.49581.8468212.941226e-08
0.4981071.846432.641002e-08
0.51.8461132.394500e-08
0.5004231.8460432.381644e-08
0.5027511.8456592.310964e-08
0.5050891.845282.239956e-08
0.5074391.8449052.168617e-08
0.5097991.8445342.096947e-08
0.512171.8441662.024943e-08
0.5145531.8438021.952605e-08
0.5169461.8434421.879929e-08
0.519351.8430861.806916e-08
0.5217661.8427331.733563e-08
0.5241931.8423841.659869e-08
0.5266311.8420391.585833e-08
0.5290811.8416971.511452e-08
0.5315421.8413581.436724e-08
0.5340141.8410231.361650e-08
0.5364981.8406911.286226e-08
0.5389931.8403621.210451e-08
0.54151.8400371.134324e-08
0.5440191.8397151.057843e-08
0.5465491.8393969.810058e-09
0.5490921.8390819.038114e-09
0.551.8389698.762300e-09
0.5516461.8387688.946048e-09
0.5542121.8384599.232539e-09
0.5567891.8381529.520363e-09
0.5593791.8378499.809526e-09
0.5619811.8375481.010003e-08
0.5645951.8372511.039189e-08
0.5672211.8369561.068511e-08
0.5698591.8366651.097969e-08
0.572511.8363761.127564e-08
0.5751731.8360891.157297e-08
0.5778481.8358061.187168e-08
0.5805361.8355251.217178e-08
0.5832361.8352471.247327e-08
0.5859491.8349721.277617e-08
0.5886751.8346991.308048e-08
0.5914131.8344291.338620e-08
0.5941641.8341611.369334e-08
0.5969271.8338961.400192e-08
0.5997041.8336331.431192e-08
0.61.8336061.434500e-08
0.6024931.8333731.466348e-08
0.6052961.8331161.502146e-08
0.6081111.832861.538110e-08
0.610941.8326071.574242e-08
0.6137811.8323561.610541e-08
0.6166361.8321081.647010e-08
0.6195041.8318621.683648e-08
0.6223861.8316181.720456e-08
0.6252811.8313761.757436e-08
0.6281891.8311371.794588e-08
0.6311111.83091.831912e-08
0.6340471.8306651.869411e-08
0.6369961.8304321.907083e-08
0.6399591.8302011.944931e-08
0.6429351.8299721.982955e-08
0.6459261.8297452.021155e-08
0.648931.829522.059534e-08
0.651.8294412.073200e-08
0.6519491.8292972.079412e-08
0.6549811.8290762.089079e-08
0.6580281.8288572.098792e-08
0.6610881.828642.108549e-08
0.6641631.8284252.118352e-08
0.6672521.8282122.128201e-08
0.6703561.8282.138095e-08
0.6734741.827792.148035e-08
0.6766071.8275832.158022e-08
0.6797541.8273762.168055e-08
0.6829151.8271722.178135e-08
0.6860921.8269692.188261e-08
0.6892831.8267682.198435e-08
0.6924891.8265692.208656e-08
0.695711.8263722.218924e-08
0.6989461.8261762.229241e-08
0.71.8261122.232600e-08
0.7021971.8259812.225571e-08
0.7054631.8257882.215123e-08
0.7087451.8255972.204625e-08
0.7120411.8254082.194080e-08
0.7153531.8252192.183485e-08
0.7186811.8250332.172841e-08
0.7220231.8248482.162147e-08
0.7253821.8246642.151403e-08
0.7287561.8244822.140610e-08
0.7321461.8243012.129766e-08
0.7355511.8241222.118872e-08
0.7389721.8239442.107928e-08
0.7424091.8237672.096932e-08
0.7458631.8235922.085885e-08
0.7493321.8234182.074787e-08
0.7528171.8232462.063637e-08
0.7563191.8230752.052436e-08
0.7598371.8229052.041182e-08
0.7633711.8227362.029876e-08
0.7669221.8225692.018517e-08
0.7704891.8224022.007106e-08
0.7740731.8222371.995641e-08
0.7776731.8220741.984123e-08
0.781291.8219111.972552e-08
0.7849241.821751.960927e-08
0.7885751.821591.949247e-08
0.7922431.821431.937514e-08
0.7959281.8212721.925725e-08
0.799631.8211161.913882e-08
0.81.82111.912700e-08
0.803351.820961.875283e-08
0.8070861.8208051.833545e-08
0.810841.8206511.791612e-08
0.8146121.8204991.749485e-08
0.8184011.8203471.707161e-08
0.8222081.8201971.664641e-08
0.8260321.8200471.621923e-08
0.8298741.8198981.579006e-08
0.8337341.8197511.535890e-08
0.8376121.8196041.492573e-08
0.8415081.8194581.449054e-08
0.8454221.8193141.405333e-08
0.8493551.819171.361409e-08
0.851.8191461.354200e-08
0.8533051.8190271.359462e-08
0.8572741.8188841.365781e-08
0.8612621.8187431.372129e-08
0.8652681.8186031.378506e-08
0.8692921.8184631.384913e-08
0.8733361.8183241.391350e-08
0.8773981.8181861.397817e-08
0.8814791.8180491.404315e-08
0.8855791.8179131.410842e-08
0.8896981.8177771.417399e-08
0.8938361.8176431.423988e-08
0.8979941.8175081.430606e-08
0.91.8174441.433800e-08
0.9021711.8173751.437260e-08
0.9063671.8172421.443949e-08
0.9105831.817111.450669e-08
0.9148181.8169791.457420e-08
0.9190731.8168491.464203e-08
0.9233481.8167191.471017e-08
0.9276431.8165891.477863e-08
0.9319581.8164611.484741e-08
0.9362931.8163331.491651e-08
0.9406481.8162061.498593e-08
0.9450231.8160791.505567e-08
0.9494191.8159531.512573e-08
0.951.8159361.513500e-08
0.9538351.8158271.519605e-08
0.9582711.8157021.526668e-08
0.9627291.8155781.533764e-08
0.9672071.8154541.540893e-08
0.9717051.815331.548055e-08
0.9762251.8152071.555250e-08
0.9807661.8150851.562479e-08
0.9853281.8149631.569742e-08
0.9899111.8148421.577038e-08
0.9945151.8147211.584368e-08
0.9991411.8146011.591732e-08
11.8145781.593100e-08
1.003791.8144811.599136e-08
1.008461.8143611.606575e-08
1.013151.8142421.614049e-08
1.017861.8141231.621558e-08
1.022591.8140051.629101e-08
1.027351.8138871.636680e-08
1.032131.813771.644293e-08
1.036931.8136521.651943e-08
1.041751.8135361.659628e-08
1.04661.8134191.667348e-08
1.051471.8133031.675105e-08
1.056361.8131871.682897e-08
1.061.8131021.688700e-08
1.061271.8130721.690726e-08
1.066211.8129571.698593e-08
1.071171.8128421.706496e-08
1.076151.8127271.714435e-08
1.081151.8126131.722412e-08
1.086181.8124991.730426e-08
1.091241.8123851.738477e-08
1.096311.8122721.746565e-08
1.101411.8121591.754691e-08
1.106531.8120451.762855e-08
1.111681.8119331.771057e-08
1.116851.811821.779297e-08
1.122051.8117071.787576e-08
1.127271.8115951.795892e-08
1.132511.8114831.804248e-08
1.137781.8113711.812642e-08
1.143071.8112591.821076e-08
1.148391.8111481.829549e-08
1.153731.8110361.838061e-08
1.159091.8109251.846612e-08
1.164481.8108131.855204e-08
1.16991.8107021.863835e-08
1.175341.8105911.872507e-08
1.180811.810481.881219e-08
1.18631.8103691.889971e-08
1.191821.8102581.898764e-08
1.197361.8101471.907598e-08
1.21.8100941.911800e-08
1.202931.8100361.932849e-08
1.208531.8099251.973009e-08
1.214151.8098142.013356e-08
1.21981.8097032.053890e-08
1.225471.8095922.094613e-08
1.231171.8094812.135525e-08
1.23691.809372.176628e-08
1.242651.8092592.217921e-08
1.248431.8091482.259407e-08
1.254241.8090372.301086e-08
1.260071.8089262.342958e-08
1.265931.8088152.385026e-08
1.271821.8087032.427289e-08
1.277741.8085922.469748e-08
1.283681.808482.512405e-08
1.289651.8083692.555261e-08
1.295651.8082572.598316e-08
1.301671.8081452.641571e-08
1.307731.8080332.685027e-08
1.313811.807922.728686e-08
1.319921.8078082.772547e-08
1.326061.8076952.816613e-08
1.332231.8075822.860883e-08
1.338431.8074692.905360e-08
1.344651.8073562.950043e-08
1.350911.8072422.994934e-08
1.357191.8071293.040034e-08
1.36351.8070153.085344e-08
1.369851.80693.130864e-08
1.376221.8067863.176596e-08
1.382621.8066713.222541e-08
1.389051.8065563.268700e-08
1.395511.806443.315073e-08
1.41.806363.347300e-08
1.4021.8063243.364868e-08
1.408521.8062083.422120e-08
1.415071.8060923.479639e-08
1.421661.8059753.537426e-08
1.428271.8058583.595481e-08
1.434911.805743.653806e-08
1.441591.8056223.712403e-08
1.448291.8055043.771272e-08
1.455031.8053853.830415e-08
1.46181.8052663.889833e-08
1.468591.8051463.949527e-08
1.475431.8050264.009499e-08
1.482291.8049064.069750e-08
1.489181.8047854.130281e-08
1.496111.8046634.191094e-08
1.503071.8045414.252190e-08
1.510061.8044194.313570e-08
1.517081.8042964.375235e-08
1.524141.8041724.437187e-08
1.531231.8040484.499428e-08
1.538351.8039234.561957e-08
1.545511.8037984.624778e-08
1.55271.8036734.687891e-08
1.559921.8035464.751297e-08
1.567171.8034194.814999e-08
1.574461.8032924.878996e-08
1.581791.8031644.943292e-08
1.589141.8030355.007886e-08
1.596541.8029055.072781e-08
1.61.8028455.103200e-08
1.603961.8027755.258615e-08
1.611421.8026445.551322e-08
1.618921.8025135.845391e-08
1.626451.8023816.140828e-08
1.634011.8022486.437638e-08
1.641611.8021146.735830e-08
1.649251.801987.035408e-08
1.656921.8018447.336380e-08
1.664631.8017087.638752e-08
1.672371.8015727.942530e-08
1.680151.8014348.247721e-08
1.687961.8012968.554332e-08
1.695811.8011578.862369e-08
1.70371.8010179.171838e-08
1.711631.8008769.482747e-08
1.719591.8007349.795102e-08
1.727591.8005911.010891e-07
1.735621.8004481.042418e-07
1.743691.8003031.074091e-07
1.751811.8001581.105912e-07
1.759951.8000121.137881e-07
1.768141.7998651.169998e-07
1.776361.7997161.202265e-07
1.784631.7995671.234682e-07
1.792931.7994171.267250e-07
1.81.7992891.295000e-07
1.801271.7992661.316458e-07
1.809641.7991131.458415e-07
1.818061.798961.601033e-07
1.826521.7988061.744314e-07
1.835011.798651.888262e-07
1.843551.7984942.032879e-07
1.852121.7983362.178169e-07
1.860741.7981772.324134e-07
1.869391.7980172.470779e-07
1.878091.7978562.618105e-07
1.886821.7976932.766117e-07
1.89561.797532.914818e-07
1.904421.7973653.064210e-07
1.913281.7971993.214296e-07
1.922181.7970323.365081e-07
1.931121.7968633.516568e-07
1.94011.7966943.668759e-07
1.949121.7965223.821657e-07
1.958191.796353.975267e-07
1.96731.7961764.129592e-07
1.976451.7960014.284634e-07
1.985641.7958244.440398e-07
1.994881.7956464.596886e-07
21.7955474.683700e-07
2.004161.7954674.862104e-07
2.013481.7952865.262357e-07
2.022841.7951045.664473e-07
2.032251.794926.068458e-07
2.04171.7947356.474323e-07
2.05121.7945486.882075e-07
2.060741.794367.291724e-07
2.070331.794177.703279e-07
2.079961.7939788.116748e-07
2.089631.7937858.532140e-07
2.099351.793598.949464e-07
2.109121.7933949.368729e-07
2.118931.7931969.789944e-07
2.128781.7929961.021312e-06
2.138681.7927941.063826e-06
2.148631.7925911.106538e-06
2.158621.7923861.149449e-06
2.168671.7921791.192559e-06
2.178751.7919711.235870e-06
2.188891.791761.279382e-06
2.199071.7915481.323097e-06
2.21.7915281.327100e-06
2.20931.7913341.530316e-06
2.219571.7911181.754953e-06
2.22991.7908991.980635e-06
2.240271.7906792.207367e-06
2.250691.7904572.435153e-06
2.261161.7902332.663999e-06
2.271671.7900072.893909e-06
2.282241.7897793.124888e-06
2.292861.7895493.356942e-06
2.303521.7893163.590075e-06
2.314241.7890823.824293e-06
2.3251.7888454.059600e-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
—