Optical constants

Refractive index of LF5G19 (SCHOTT)

LF5G19: n,k 0.4–2.5 µm

Data
formula 2 + tabulated k
Range
0.4–2.5 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.4–2.5 µm
Refractive index n
1.59655
Extinction coefficient k
4.12252e-08
Permittivity ε1
2.54896
Permittivity ε2
1.31636e-07
Absorption coefficient α
0.00881639 cm⁻¹
Penetration depth δ = λ/(2πk)
2.26850e+09 nm
Abbe number Vd
39.891
Chromatic dispersion dn/dλ
-0.0759509 µm⁻¹
Group index ng
1.64118
Group velocity dispersion
146.307 fs²/mm
Dispersion parameter D
-798.184 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

# LF5G19 (SCHOTT): LF5G19
schott_lf5g19 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "LF5G19", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_lf5g19.range_nm)  # (400, 2500) nm
eps = schott_lf5g19.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=1.34611327λ2λ2−0.0097174385+0.142428018λ2λ2−0.0501911619+0.900477176λ2λ2−111.959703

Valid from 0.4 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.34611327
C30.0097174385
C40.142428018
C50.0501911619
C60.900477176
C7111.959703

Comments and conditions

inquiry glass

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -8.15e-06 1.34e-08 -9.22e-12 8.57e-07 8.26e-10 0.243
nd
1.59655
Vd
39.89
glass code
597399.330
glass status
special
density
value: 3300
thermal expansion
value: 1.065e-05, temperature range: 243 343; value: 1.142e-05, temperature range: 293 573
dPgF
0.0036
resistance
acid: 3.4; stain: 2.0; alkali: 2.2; climatic: 2.0; phosphate: 3.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -2.72e-06 K⁻¹ at 633 nm, dn/dT = -3.60e-06 K⁻¹ at 1310 nm, dn/dT = -3.65e-06 K⁻¹ at 1550 nm

References

Cite

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com); See also SCHOTT 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 414 wavelengths, the same grid as the API and the library
LF5G19 (SCHOTT), LF5G19: n and k versus wavelength
λ (µm)nk
0.41.6246214.098400e-06
0.4018411.6240913.732256e-06
0.4036911.6235683.364427e-06
0.4051.6232043.104200e-06
0.405551.6230523.041878e-06
0.4074171.6225422.830204e-06
0.4092921.622042.617555e-06
0.4111761.6215442.403927e-06
0.4130691.6210542.189316e-06
0.4149711.6205711.973716e-06
0.4168811.6200941.757125e-06
0.41881.6196231.539536e-06
0.421.6193331.403500e-06
0.4207281.6191581.370642e-06
0.4226651.6186991.283238e-06
0.4246111.6182461.195431e-06
0.4265651.6177991.107221e-06
0.4285291.6173571.018604e-06
0.4305021.616929.295797e-07
0.4324841.616498.401453e-07
0.4344751.6160647.502993e-07
0.4361.6157436.814600e-07
0.4364751.6156446.733084e-07
0.4384841.6152286.388019e-07
0.4405031.6148186.041364e-07
0.442531.6144135.693114e-07
0.4445681.6140135.343261e-07
0.4466141.6136184.991798e-07
0.448671.6132274.638716e-07
0.4507361.6128414.284009e-07
0.4528111.612463.927669e-07
0.4548951.6120833.569688e-07
0.4569891.611713.210060e-07
0.4590931.6113422.848776e-07
0.461.6111862.693000e-07
0.4612061.6109792.644556e-07
0.463331.6106192.559295e-07
0.4654621.6102642.473642e-07
0.4676051.6099132.387594e-07
0.4697581.6095662.301150e-07
0.471921.6092232.214308e-07
0.4740931.6088842.127067e-07
0.4762751.6085482.039423e-07
0.4784681.6082171.951377e-07
0.480671.6078891.862925e-07
0.4828831.6075651.774066e-07
0.4851061.6072451.684797e-07
0.4873391.6069281.595118e-07
0.4895831.6066151.505026e-07
0.4918371.6063051.414519e-07
0.4941011.6059991.323596e-07
0.4963751.6056961.232254e-07
0.498661.6053971.140492e-07
0.51.6052241.086700e-07
0.5009561.6051011.076609e-07
0.5032621.6048081.052269e-07
0.5055791.6045181.027816e-07
0.5079061.6042311.003251e-07
0.5102451.6039489.785730e-08
0.5125931.6036689.537813e-08
0.5149531.603399.288755e-08
0.5173241.6031169.038549e-08
0.5197051.6028448.787192e-08
0.5220981.6025768.534678e-08
0.5245011.602318.281002e-08
0.5269161.6020478.026157e-08
0.5293411.6017877.770140e-08
0.5317781.601537.512944e-08
0.5342261.6012757.254564e-08
0.5366861.6010236.994994e-08
0.5391561.6007746.734230e-08
0.5416381.6005276.472265e-08
0.5441321.6002836.209094e-08
0.5461.6001026.011900e-08
0.5466371.6000415.979770e-08
0.5491531.5998025.852756e-08
0.5516811.5995655.725157e-08
0.5542211.5993315.596972e-08
0.5567721.5990995.468196e-08
0.5593351.598875.338827e-08
0.561911.5986435.208863e-08
0.5644971.5984185.078300e-08
0.5670951.5981954.947137e-08
0.5697061.5979754.815369e-08
0.5723291.5977574.682995e-08
0.5749631.5975414.550012e-08
0.577611.5973274.416416e-08
0.581.5971374.295800e-08
0.5802691.5971154.289659e-08
0.5829411.5969064.228754e-08
0.5856241.5966984.167569e-08
0.588321.5964934.106102e-08
0.5910281.5962894.044352e-08
0.5937491.5960883.982318e-08
0.5964831.5958893.919998e-08
0.5992281.5956913.857391e-08
0.6019871.5954953.794496e-08
0.6047581.5953023.731312e-08
0.6075421.595113.667837e-08
0.6103391.594923.604069e-08
0.6131491.5947323.540008e-08
0.6159711.5945453.475652e-08
0.6188071.5943613.411000e-08
0.621.5942843.383800e-08
0.6216561.5941783.357524e-08
0.6245171.5939963.312107e-08
0.6273921.5938173.266482e-08
0.6302811.5936393.220646e-08
0.6331821.5934633.174599e-08
0.6360971.5932893.128340e-08
0.6390251.5931163.081869e-08
0.6419671.5929453.035183e-08
0.6449221.5927752.988283e-08
0.6478911.5926072.941166e-08
0.6508741.592442.893833e-08
0.653871.5922752.846282e-08
0.656881.5921122.798511e-08
0.6599041.5919492.750521e-08
0.661.5919442.749000e-08
0.6629421.5917892.661931e-08
0.6659941.591632.571612e-08
0.669061.5914722.480876e-08
0.672141.5913162.389723e-08
0.6752341.5911612.298151e-08
0.6783421.5910072.206156e-08
0.6814651.5908552.113739e-08
0.6846021.5907042.020895e-08
0.6877541.5905541.927625e-08
0.690921.5904061.833925e-08
0.6941011.5902591.739794e-08
0.6972961.5901131.645229e-08
0.71.5899911.565200e-08
0.7005061.5899691.563950e-08
0.7037311.5898251.555980e-08
0.706971.5896831.547974e-08
0.7102251.5895431.539930e-08
0.7134941.5894031.531850e-08
0.7167791.5892641.523732e-08
0.7200791.5891271.515577e-08
0.7233931.5889911.507385e-08
0.7267241.5888561.499155e-08
0.7300691.5887221.490887e-08
0.733431.5885891.482581e-08
0.7368061.5884571.474236e-08
0.7401981.5883271.465854e-08
0.7436061.5881971.457432e-08
0.7470291.5880691.448972e-08
0.7504681.5879411.440473e-08
0.7539231.5878151.431935e-08
0.7573931.5876891.423357e-08
0.760881.5875641.414740e-08
0.7643831.5874411.406084e-08
0.7679011.5873181.397387e-08
0.7714371.5871971.388651e-08
0.7749881.5870761.379874e-08
0.7785551.5869561.371057e-08
0.782141.5868371.362199e-08
0.785741.5867191.353300e-08
0.7893571.5866021.344361e-08
0.7929911.5864861.335380e-08
0.7966421.586371.326358e-08
0.8003091.5862561.317295e-08
0.8039931.5861421.308189e-08
0.8076941.5860291.299042e-08
0.8114131.5859171.289853e-08
0.8151481.5858061.280621e-08
0.81891.5856961.271347e-08
0.822671.5855861.262031e-08
0.8264571.5854771.252671e-08
0.8302621.5853691.243268e-08
0.8340841.5852621.233822e-08
0.8379241.5851551.224333e-08
0.8417811.5850491.214799e-08
0.8456561.5849441.205222e-08
0.8495491.5848391.195601e-08
0.853461.5847351.185936e-08
0.8573891.5846321.176226e-08
0.8613361.584531.166471e-08
0.8653011.5844281.156672e-08
0.8692851.5843271.146827e-08
0.8732861.5842261.136937e-08
0.8773071.5841261.127001e-08
0.8813451.5840271.117020e-08
0.8854031.5839291.106993e-08
0.8894791.5838311.096920e-08
0.8935731.5837331.086800e-08
0.8976871.5836361.076633e-08
0.9018191.583541.066420e-08
0.9059711.5834441.056160e-08
0.9101421.5833491.045853e-08
0.9143311.5832551.035498e-08
0.918541.583161.025095e-08
0.9227691.5830671.014645e-08
0.9270171.5829741.004147e-08
0.9312841.5828819.935997e-09
0.9355721.5827899.830044e-09
0.9398791.5826989.723602e-09
0.9442051.5826079.616671e-09
0.9485521.5825169.509247e-09
0.9529191.5824269.401328e-09
0.9573051.5823369.292913e-09
0.9617121.5822479.183999e-09
0.966141.5821599.074583e-09
0.9705871.582078.964664e-09
0.9750551.5819828.854239e-09
0.9795441.5818958.743305e-09
0.9840531.5818088.631861e-09
0.9885831.5817218.519903e-09
0.9931341.5816358.407431e-09
0.9977061.5815498.294440e-09
1.00231.5814638.180929e-09
1.006911.5813788.066896e-09
1.011551.5812937.952338e-09
1.016211.5812097.837253e-09
1.020881.5811257.721637e-09
1.025581.5810417.605490e-09
1.03031.5809587.488807e-09
1.035051.5808747.371588e-09
1.039811.5807927.253829e-09
1.04461.5807097.135528e-09
1.049411.5806277.016682e-09
1.054241.5805456.897289e-09
1.059091.5804636.777347e-09
1.061.5804486.754900e-09
1.063971.5803827.570345e-09
1.068871.5803018.577088e-09
1.073791.580229.588466e-09
1.078731.5801391.060450e-08
1.083691.5800591.162521e-08
1.088681.5799791.265062e-08
1.09371.5798991.368075e-08
1.098731.5798191.471562e-08
1.103791.5797391.575526e-08
1.108871.579661.679968e-08
1.113971.5795811.784891e-08
1.11911.5795021.890297e-08
1.124251.5794231.996188e-08
1.129431.5793452.102567e-08
1.134631.5792672.209435e-08
1.139851.5791882.316796e-08
1.14511.579112.424651e-08
1.150371.5790322.533002e-08
1.155671.5789542.641852e-08
1.160991.5788772.751203e-08
1.166331.5787992.861057e-08
1.17171.5787222.971417e-08
1.177091.5786453.082286e-08
1.182511.5785673.193664e-08
1.187961.578493.305555e-08
1.193431.5784133.417962e-08
1.198921.5783363.530886e-08
1.204441.5782593.644329e-08
1.209981.5781833.758295e-08
1.215551.5781063.872786e-08
1.221151.5780293.987804e-08
1.226771.5779534.103351e-08
1.232421.5778764.219430e-08
1.238091.5777994.336043e-08
1.243791.5777234.453193e-08
1.249521.5776464.570883e-08
1.255271.577574.689114e-08
1.261051.5774934.807890e-08
1.266851.5774174.927212e-08
1.272691.577345.047084e-08
1.278541.5772645.167508e-08
1.284431.5771875.288486e-08
1.290341.577115.410020e-08
1.296281.5770345.532115e-08
1.302251.5769575.654771e-08
1.308251.576885.777992e-08
1.314271.5768045.901780e-08
1.320321.5767276.026138e-08
1.32641.576656.151069e-08
1.33251.5765736.276575e-08
1.338641.5764966.402658e-08
1.34481.5764186.529322e-08
1.350991.5763416.656569e-08
1.357211.5762646.784402e-08
1.363461.5761866.912823e-08
1.369731.5761087.041836e-08
1.376041.5760317.171442e-08
1.382371.5759537.301645e-08
1.388741.5758757.432448e-08
1.395131.5757967.563852e-08
1.401551.5757187.695862e-08
1.4081.5756397.828479e-08
1.414491.5755617.961706e-08
1.4211.5754828.095547e-08
1.427541.5754038.230005e-08
1.434111.5753238.365081e-08
1.440711.5752448.500779e-08
1.447351.5751648.637101e-08
1.454011.5750848.774051e-08
1.46071.5750048.911632e-08
1.467431.5749239.049846e-08
1.474181.5748439.188696e-08
1.480971.5747629.328186e-08
1.487791.5746819.468317e-08
1.494631.5745999.609094e-08
1.501521.5745189.750519e-08
1.508431.5744369.892595e-08
1.515371.5743531.003532e-07
1.522351.5742711.017871e-07
1.529361.5741881.032276e-07
1.531.574181.033600e-07
1.53641.5741051.334632e-07
1.543471.5740211.667510e-07
1.550571.5739372.001921e-07
1.557711.5738532.337871e-07
1.564881.5737692.675367e-07
1.572091.5736843.014417e-07
1.579321.5735993.355028e-07
1.586591.5735133.697207e-07
1.59391.5734274.040962e-07
1.601241.5733414.386298e-07
1.608611.5732544.733225e-07
1.616011.5731675.081748e-07
1.623451.5730795.431876e-07
1.630931.5729925.783616e-07
1.638431.5729036.136975e-07
1.645981.5728146.491960e-07
1.653551.5727256.848580e-07
1.661171.5726357.206842e-07
1.668811.5725457.566753e-07
1.676491.5724557.928320e-07
1.684211.5723638.291552e-07
1.691971.5722728.656457e-07
1.699751.572189.023041e-07
1.707581.5720879.391312e-07
1.715441.5719949.761279e-07
1.723341.5719011.013295e-06
1.731271.5718061.050633e-06
1.739241.5717121.088143e-06
1.747251.5716161.125826e-06
1.755291.5715211.163682e-06
1.763371.5714241.201712e-06
1.771491.5713271.239918e-06
1.779641.571231.278299e-06
1.787841.5711321.316857e-06
1.796071.5710331.355593e-06
1.804341.5709341.394507e-06
1.812641.5708341.433600e-06
1.820991.5707331.472873e-06
1.829371.5706321.512326e-06
1.837791.570531.551962e-06
1.846251.5704271.591780e-06
1.854751.5703241.631781e-06
1.863291.570221.671966e-06
1.871871.5701161.712337e-06
1.880481.570011.752893e-06
1.889141.5699041.793636e-06
1.897841.5697971.834566e-06
1.906571.569691.875685e-06
1.915351.5695821.916993e-06
1.924171.5694731.958491e-06
1.933031.5693632.000181e-06
1.941921.5692522.042062e-06
1.950861.5691412.084136e-06
1.959841.5690292.126404e-06
1.968871.5689162.168866e-06
1.971.5689022.174200e-06
1.977931.5688022.316085e-06
1.987041.5686872.478995e-06
1.996181.5685722.642655e-06
2.005371.5684552.807068e-06
2.01461.5683382.972238e-06
2.023881.568223.138168e-06
2.03321.5681013.304862e-06
2.042561.5679813.472324e-06
2.051961.567863.640557e-06
2.06141.5677383.809563e-06
2.070891.5676163.979348e-06
2.080431.5674924.149915e-06
2.091.5673674.321267e-06
2.099631.5672414.493407e-06
2.109291.5671154.666340e-06
2.1191.5669874.840070e-06
2.128761.5668585.014598e-06
2.138561.5667285.189931e-06
2.14841.5665985.366070e-06
2.158291.5664665.543021e-06
2.168231.5663335.720786e-06
2.178211.5661995.899369e-06
2.188241.5660636.078774e-06
2.198311.5659276.259005e-06
2.208431.5657896.440066e-06
2.21861.5656516.621961e-06
2.228811.5655116.804693e-06
2.239071.565376.988266e-06
2.249381.5652287.172684e-06
2.259731.5650847.357951e-06
2.270131.564947.544071e-06
2.280591.5647947.731048e-06
2.291081.5646477.918885e-06
2.301631.5644988.107588e-06
2.312231.5643488.297158e-06
2.322871.5641978.487602e-06
2.3251.5641678.525700e-06
2.333561.5640458.735213e-06
2.344311.5638918.998026e-06
2.35511.5637369.262048e-06
2.365941.5635799.527285e-06
2.376831.5634219.793743e-06
2.387771.5632621.006143e-05
2.398771.5631011.033035e-05
2.409811.5629391.060050e-05
2.42091.5627751.087190e-05
2.432051.562611.114455e-05
2.443241.5624431.141845e-05
2.454491.5622751.169362e-05
2.465791.5621051.197005e-05
2.477141.5619341.224775e-05
2.488541.5617611.252673e-05
2.51.5615861.280700e-05

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
—