Optical constants

Refractive index of S-LAH52 (OHARA)

S-LAH52: n,k 0.33–2.4 µm

Data
formula 2 + tabulated k
Range
0.33–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.33–2.4 µm
Refractive index n
1.79951
Extinction coefficient k
1.40486e-08
Permittivity ε1
3.23824
Permittivity ε2
5.05614e-08
Absorption coefficient α
0.00300443 cm⁻¹
Penetration depth δ = λ/(2πk)
6.65683e+09 nm
Abbe number Vd
42.225
Chromatic dispersion dn/dλ
-0.0967163 µm⁻¹
Group index ng
1.85634
Group velocity dispersion
181.052 fs²/mm
Dispersion parameter D
-987.733 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

# S-LAH52 (OHARA): S-LAH52
ohara_s_lah52 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-LAH52", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_lah52.range_nm)  # (330, 2400) nm
eps = ohara_s_lah52.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=1.85390925λ2λ2−0.00955320687+0.297925555λ2λ2−0.039381685+1.39382086λ2λ2−102.706848

Valid from 0.33 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.85390925
C30.00955320687
C40.297925555
C50.039381685
C61.39382086
C7102.706848

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 5.34e-06 1.23e-08 6.91e-12 7.5e-07 8.12e-10 0.219
nd
1.799516
Vd
42.225007
glass code
800422
density
value: 4410
thermal expansion
value: 6e-06, temperature range: 243 343; value: 7.3e-06, temperature range: 293 573
dPgF
-0.006
resistance
acid: 51.2; climatic: 1.0; phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 4.62e-06 K⁻¹ at 633 nm, dn/dT = 3.50e-06 K⁻¹ at 1310 nm, dn/dT = 3.41e-06 K⁻¹ at 1550 nm

References

Cite

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp); See also OHARA 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
S-LAH52 (OHARA), S-LAH52: n and k versus wavelength
λ (µm)nk
0.331.8701341.027300e-05
0.3316451.8689179.237148e-06
0.3332981.8677218.196132e-06
0.334961.8665437.149926e-06
0.336631.8653846.098504e-06
0.3383081.8642445.041842e-06
0.3399941.8631223.979911e-06
0.341.8631183.976400e-06
0.3416891.8620173.612329e-06
0.3433931.860933.245236e-06
0.3451051.859862.876312e-06
0.3468251.8588052.505550e-06
0.3485541.8577682.132939e-06
0.351.8569151.821300e-06
0.3502921.8567451.795638e-06
0.3520381.8557391.641931e-06
0.3537931.8547471.487458e-06
0.3555561.853771.332215e-06
0.3573291.8528081.176197e-06
0.359111.8518591.019402e-06
0.361.8513939.410900e-07
0.3609011.8509259.057475e-07
0.36271.8500048.351366e-07
0.3645081.8490977.641737e-07
0.3663251.8482036.928570e-07
0.3681511.8473216.211848e-07
0.3699861.8464535.491553e-07
0.371.8464465.486200e-07
0.3718311.8455965.126943e-07
0.3736841.8447524.763205e-07
0.3755471.8439194.397654e-07
0.3774191.8430984.030280e-07
0.3793011.8422893.661075e-07
0.381.8419923.523900e-07
0.3811921.841493.368368e-07
0.3830921.8407033.120379e-07
0.3850021.8399272.871154e-07
0.3869211.8391612.620687e-07
0.388851.8384052.368971e-07
0.391.8379622.218900e-07
0.3907891.837662.170036e-07
0.3927371.8369252.049310e-07
0.3946941.8361991.927982e-07
0.3966621.8354841.806050e-07
0.398641.8347781.683509e-07
0.41.8342991.599200e-07
0.4006271.8340811.579907e-07
0.4026241.8333931.518433e-07
0.4046311.8327141.456652e-07
0.4066481.8320451.394563e-07
0.4086751.8313841.332165e-07
0.4107131.8307311.269456e-07
0.412761.8300871.206434e-07
0.4148181.8294511.143098e-07
0.4168861.8288241.079446e-07
0.4189641.8282041.015477e-07
0.421.8278999.835900e-08
0.4210531.8275929.709339e-08
0.4231521.8269889.456975e-08
0.4252611.8263929.203353e-08
0.4273811.8258038.948467e-08
0.4295121.8252228.692310e-08
0.4316531.8246478.434876e-08
0.4338051.824088.176159e-08
0.4359671.823527.916152e-08
0.4381411.8229677.654849e-08
0.441.8225017.431300e-08
0.4403251.8224217.400457e-08
0.442521.8218817.192045e-08
0.4447261.8213486.982594e-08
0.4469431.8208216.772098e-08
0.4491711.8203016.560554e-08
0.451411.8197876.347955e-08
0.4536611.819286.134296e-08
0.4559221.8187785.919571e-08
0.4581951.8182825.703777e-08
0.461.8178955.532400e-08
0.4604791.8177935.491827e-08
0.4627751.8173095.297451e-08
0.4650821.8168315.102106e-08
0.46741.8163584.905787e-08
0.469731.8158914.708489e-08
0.4720721.815434.510208e-08
0.4744251.8149744.310939e-08
0.476791.8145234.110675e-08
0.4791671.8140783.909414e-08
0.481.8139233.838900e-08
0.4815561.8136373.757687e-08
0.4839571.8132023.632386e-08
0.4863691.8127723.506461e-08
0.4887941.8123473.379908e-08
0.4912311.8119263.252724e-08
0.4936791.8115113.124906e-08
0.496141.81112.996451e-08
0.4986141.8106942.867355e-08
0.51.8104692.795000e-08
0.5010991.8102922.762457e-08
0.5035971.8098952.688515e-08
0.5061081.8095032.614204e-08
0.5086311.8091142.539522e-08
0.5111671.808732.464469e-08
0.5137151.8083512.389041e-08
0.5162761.8079752.313237e-08
0.5188491.8076042.237055e-08
0.5214361.8072372.160493e-08
0.5240351.8068742.083550e-08
0.5266481.8065152.006223e-08
0.5292731.806161.928511e-08
0.5319121.8058081.850411e-08
0.5345631.8054611.771922e-08
0.5372281.8051171.693042e-08
0.5399061.8047771.613768e-08
0.5425981.8044411.534100e-08
0.5453031.8041081.454034e-08
0.5480211.8037791.373569e-08
0.551.8035431.315000e-08
0.5507531.8034531.316800e-08
0.5534991.8031311.323362e-08
0.5562581.8028121.329957e-08
0.5590311.8024971.336585e-08
0.5618181.8021851.343245e-08
0.5646191.8018761.349939e-08
0.5674331.8015711.356666e-08
0.5702621.8012681.363427e-08
0.5731051.8009691.370221e-08
0.5759621.8006731.377049e-08
0.5788331.800381.383912e-08
0.5817191.800091.390808e-08
0.5846191.7998031.397739e-08
0.5875331.7995191.404704e-08
0.5904621.7992371.411705e-08
0.5934061.7989591.418740e-08
0.5963641.7986831.425810e-08
0.5993371.7984111.432915e-08
0.61.798351.434500e-08
0.6023251.7981411.415949e-08
0.6053271.7978731.391988e-08
0.6083451.7976091.367907e-08
0.6113781.7973471.343706e-08
0.6144261.7970871.319384e-08
0.6174891.796831.294942e-08
0.6205671.7965761.270377e-08
0.623661.7963241.245690e-08
0.6267691.7960751.220880e-08
0.6298941.7958281.195946e-08
0.6330341.7955831.170888e-08
0.636191.7953411.145705e-08
0.6393611.7951011.120396e-08
0.6425491.7948641.094962e-08
0.6457521.7946291.069400e-08
0.6489711.7943961.043711e-08
0.651.7943221.035500e-08
0.6522061.7941651.039017e-08
0.6554581.7939361.044199e-08
0.6587251.793711.049408e-08
0.6620091.7934851.054642e-08
0.6653091.7932631.059903e-08
0.6686261.7930431.065190e-08
0.6719591.7928241.070503e-08
0.6753091.7926081.075842e-08
0.6786751.7923941.081209e-08
0.6820591.7921821.086601e-08
0.6854591.7919711.092021e-08
0.6888761.7917631.097468e-08
0.692311.7915561.102942e-08
0.6957611.7913521.108444e-08
0.699231.7911491.113972e-08
0.71.7911041.115200e-08
0.7027161.7909481.119526e-08
0.7062191.7907481.125106e-08
0.7097391.7905511.130715e-08
0.7132771.7903551.136351e-08
0.7168331.790161.142015e-08
0.7204071.7899681.147708e-08
0.7239981.7897771.153429e-08
0.7276071.7895881.159179e-08
0.7312351.78941.164957e-08
0.734881.7892141.170764e-08
0.7385431.789031.176600e-08
0.7422251.7888471.182465e-08
0.7459251.7886651.188359e-08
0.7496441.7884851.194283e-08
0.7533811.7883071.200236e-08
0.7571371.7881291.206219e-08
0.7609111.7879541.212231e-08
0.7647041.787781.218274e-08
0.7685161.7876071.224347e-08
0.7723481.7874351.230450e-08
0.7761981.7872651.236583e-08
0.7800671.7870961.242747e-08
0.7839561.7869291.248942e-08
0.7878641.7867621.255168e-08
0.7917921.7865971.261424e-08
0.7957391.7864341.267712e-08
0.7997061.7862711.274031e-08
0.81.7862591.274500e-08
0.8036931.786111.280382e-08
0.8076991.785951.286765e-08
0.8117261.7857911.293179e-08
0.8157721.7856331.299625e-08
0.8198391.7854761.306103e-08
0.8239261.7853211.312614e-08
0.8280331.7851661.319157e-08
0.8321611.7850131.325733e-08
0.836311.7848611.332341e-08
0.8404791.7847091.338983e-08
0.8446691.7845591.345657e-08
0.8488791.784411.352365e-08
0.8531111.7842611.359106e-08
0.8573641.7841141.365881e-08
0.8616381.7839681.372690e-08
0.8659341.7838221.379532e-08
0.870251.7836781.386409e-08
0.8745891.7835341.393320e-08
0.8789491.7833921.400265e-08
0.883331.783251.407245e-08
0.8877341.7831091.414260e-08
0.8921591.7829691.421310e-08
0.8966071.782831.428395e-08
0.91.7827241.433800e-08
0.9010771.7826911.435515e-08
0.9055691.7825541.442671e-08
0.9100831.7824171.449862e-08
0.914621.7822811.457089e-08
0.9191791.7821451.464353e-08
0.9237621.7820111.471652e-08
0.9283671.7818771.478988e-08
0.9329951.7817431.486361e-08
0.9376461.7816111.493770e-08
0.942321.7814791.501216e-08
0.9470181.7813481.508699e-08
0.9517391.7812171.516220e-08
0.9564831.7810871.523778e-08
0.9612521.7809581.531374e-08
0.9660441.780831.539007e-08
0.9708591.7807011.546679e-08
0.9756991.7805741.554389e-08
0.9805631.7804471.562137e-08
0.9854521.7803211.569924e-08
0.9903641.7801951.577750e-08
0.9953011.7800691.585615e-08
11.7799511.593100e-08
1.000261.7799451.594778e-08
1.005251.779821.626591e-08
1.010261.7796961.658563e-08
1.01531.7795731.690695e-08
1.020361.779451.722987e-08
1.025451.7793271.755439e-08
1.030561.7792051.788054e-08
1.035691.7790841.820831e-08
1.040861.7789621.853772e-08
1.046051.7788411.886876e-08
1.051261.7787211.920146e-08
1.05651.7786011.953582e-08
1.061771.7784811.987184e-08
1.067061.7783612.020954e-08
1.072381.7782422.054892e-08
1.077731.7781232.088999e-08
1.08311.7780052.123277e-08
1.08851.7778862.157725e-08
1.093931.7777682.192345e-08
1.099381.7776512.227137e-08
1.104861.7775332.262103e-08
1.110371.7774162.297244e-08
1.11591.7772992.332559e-08
1.121471.7771822.368051e-08
1.127061.7770652.403719e-08
1.132671.7769492.439565e-08
1.138321.7768322.475590e-08
1.1441.7767162.511795e-08
1.14971.77662.548180e-08
1.155431.7764842.584746e-08
1.161191.7763682.621495e-08
1.166981.7762532.658427e-08
1.17281.7761372.695543e-08
1.178641.7760222.732844e-08
1.184521.7759062.770331e-08
1.190421.7757912.808005e-08
1.196361.7756752.845867e-08
1.21.7756052.869100e-08
1.202321.775562.913639e-08
1.208321.7754453.028584e-08
1.214341.775333.144102e-08
1.220391.7752143.260196e-08
1.226481.7750993.376869e-08
1.232591.7749843.494123e-08
1.238741.7748683.611962e-08
1.244911.7747533.730389e-08
1.251121.7746373.849406e-08
1.257351.7745213.969016e-08
1.263621.7744064.089222e-08
1.269921.774294.210028e-08
1.276251.7741744.331435e-08
1.282611.7740584.453449e-08
1.289011.7739424.576070e-08
1.295431.7738254.699303e-08
1.301891.7737094.823150e-08
1.308381.7735924.947614e-08
1.314911.7734755.072699e-08
1.321461.7733585.198407e-08
1.328051.7732415.324742e-08
1.334671.7731235.451707e-08
1.341321.7730055.579305e-08
1.348011.7728875.707539e-08
1.354731.7727695.836412e-08
1.361481.772655.965928e-08
1.368271.7725316.096089e-08
1.375091.7724126.226899e-08
1.381951.7722926.358361e-08
1.388831.7721726.490479e-08
1.395761.7720526.623255e-08
1.41.7719786.704600e-08
1.402721.7719316.735015e-08
1.409711.771816.813313e-08
1.416741.7716896.892001e-08
1.42381.7715676.971081e-08
1.43091.7714457.050556e-08
1.438031.7713227.130427e-08
1.44521.7711997.210696e-08
1.45241.7710767.291365e-08
1.459641.7709527.372436e-08
1.466921.7708277.453911e-08
1.474231.7707027.535793e-08
1.481581.7705777.618083e-08
1.488971.770457.700783e-08
1.496391.7703247.783895e-08
1.503851.7701977.867422e-08
1.511351.7700697.951365e-08
1.518881.7699418.035726e-08
1.526451.7698128.120508e-08
1.534061.7696828.205713e-08
1.541711.7695528.291342e-08
1.54941.7694218.377398e-08
1.557121.769298.463884e-08
1.564881.7691588.550800e-08
1.572681.7690258.638150e-08
1.580521.7688928.725935e-08
1.58841.7687588.814158e-08
1.596321.7686238.902820e-08
1.61.768568.944000e-08
1.604281.7684879.184780e-08
1.612281.7683519.634683e-08
1.620321.7682131.008683e-07
1.628391.7680751.054123e-07
1.636511.7679371.099789e-07
1.644671.7677971.145684e-07
1.652871.7676561.191807e-07
1.661111.7675151.238160e-07
1.669391.7673731.284744e-07
1.677711.767231.331560e-07
1.686071.7670861.378609e-07
1.694481.7669411.425893e-07
1.702931.7667951.473413e-07
1.711421.7666481.521170e-07
1.719951.7665011.569165e-07
1.728521.7663521.617399e-07
1.737141.7662021.665874e-07
1.74581.7660511.714590e-07
1.75451.76591.763549e-07
1.763251.7657471.812752e-07
1.772041.7655931.862200e-07
1.780871.7654381.911895e-07
1.789751.7652821.961838e-07
1.798671.7651242.012030e-07
1.81.7651012.019500e-07
1.807641.7649662.158933e-07
1.816651.7648062.323421e-07
1.825711.7646462.488730e-07
1.834811.7644842.654862e-07
1.843951.764322.821823e-07
1.853151.7641562.989616e-07
1.862391.763993.158246e-07
1.871671.7638233.327716e-07
1.8811.7636553.498031e-07
1.890381.7634853.669195e-07
1.89981.7633143.841213e-07
1.909271.7631424.014088e-07
1.918791.7629684.187824e-07
1.928351.7627934.362427e-07
1.937971.7626164.537900e-07
1.947631.7624384.714248e-07
1.957341.7622594.891476e-07
1.96711.7620785.069586e-07
1.97691.7618955.248585e-07
1.986761.7617115.428476e-07
1.996661.7615265.609263e-07
21.7614635.670200e-07
2.006621.7613396.028775e-07
2.016621.761156.570992e-07
2.026671.7609597.115912e-07
2.036771.7607677.663549e-07
2.046931.7605748.213916e-07
2.057131.7603788.767026e-07
2.067391.7601819.322894e-07
2.077691.7599829.881533e-07
2.088051.7597811.044296e-06
2.098461.7595791.100718e-06
2.108921.7593741.157421e-06
2.119441.7591681.214408e-06
2.131.758961.271678e-06
2.140621.758751.329234e-06
2.151291.7585381.387076e-06
2.162021.7583241.445207e-06
2.172791.7581081.503628e-06
2.183621.757891.562340e-06
2.194511.757671.621345e-06
2.21.7575591.651100e-06
2.205451.7574481.784366e-06
2.216451.7572242.053181e-06
2.227491.7569982.323336e-06
2.23861.7567692.594838e-06
2.249761.7565392.867694e-06
2.260971.7563063.141910e-06
2.272251.7560713.417493e-06
2.283571.7558333.694449e-06
2.294961.7555943.972787e-06
2.30641.7553524.252512e-06
2.317891.7551074.533631e-06
2.329451.754864.816152e-06
2.341061.7546115.100081e-06
2.352731.7543595.385426e-06
2.364461.7541055.672193e-06
2.376251.7538485.960389e-06
2.38811.7535886.250023e-06
2.41.7533266.541100e-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
—