Optical constants

Refractive index of S-LAM60 (OHARA)

S-LAM60: 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
1.74319
Extinction coefficient k
1.29605e-08
Permittivity ε1
3.03873
Permittivity ε2
4.51853e-08
Absorption coefficient α
0.00277172 cm⁻¹
Penetration depth δ = λ/(2πk)
7.21573e+09 nm
Abbe number Vd
49.339
Chromatic dispersion dn/dλ
-0.0774578 µm⁻¹
Group index ng
1.78871
Group velocity dispersion
139.137 fs²/mm
Dispersion parameter D
-759.069 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-LAM60 (OHARA): S-LAM60
ohara_s_lam60 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-LAM60", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_lam60.range_nm)  # (330, 2400) nm
eps = ohara_s_lam60.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=1.60673056λ2λ2−0.0077504614+0.36641564λ2λ2−0.0289967611+1.31761804λ2λ2−93.0720709

Valid from 0.33 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.60673056
C30.0077504614
C40.36641564
C50.0289967611
C61.31761804
C793.0720709

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 6.57e-06 1.45e-08 -3.29e-11 4.46e-07 4.6e-10 0.256
nd
1.743198
Vd
49.339444
glass code
743493
density
value: 4059
thermal expansion
value: 5.4e-06, temperature range: 243 343; value: 6.6e-06, temperature range: 293 573
dPgF
-0.0085
resistance
acid: 52.0; climatic: 2.0; phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 4.60e-06 K⁻¹ at 633 nm, dn/dT = 3.90e-06 K⁻¹ at 1310 nm, dn/dT = 3.84e-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-LAM60 (OHARA), S-LAM60: n and k versus wavelength
λ (µm)nk
0.331.7965779.208400e-06
0.3316451.795718.244504e-06
0.3332981.7948567.275803e-06
0.334961.7940136.302273e-06
0.336631.7931825.323890e-06
0.3383081.7923634.340630e-06
0.3399941.7915543.352467e-06
0.341.7915523.349200e-06
0.3416891.7907573.023765e-06
0.3433931.7899712.695627e-06
0.3451051.7891952.365854e-06
0.3468251.788432.034437e-06
0.3485541.7876751.701368e-06
0.351.7870541.422800e-06
0.3502921.786931.401007e-06
0.3520381.7861951.270473e-06
0.3537931.785471.139288e-06
0.3555561.7847551.007449e-06
0.3573291.7840498.749528e-07
0.359111.7833527.417961e-07
0.361.7830096.752900e-07
0.3609011.7826646.453776e-07
0.36271.7819855.856155e-07
0.3645081.7813155.255555e-07
0.3663251.7806544.651961e-07
0.3681511.7800014.045358e-07
0.3699861.7793573.435731e-07
0.371.7793523.431200e-07
0.3718311.7787213.163263e-07
0.3736841.7780932.891984e-07
0.3755471.7774732.619353e-07
0.3774191.776862.345363e-07
0.3793011.7762562.070007e-07
0.381.7760341.967700e-07
0.3811921.7756591.880328e-07
0.3830921.7750691.741017e-07
0.3850021.7744871.601012e-07
0.3869211.7739121.460309e-07
0.388851.7733451.318904e-07
0.391.7730111.234600e-07
0.3907891.7727841.203371e-07
0.3927371.772231.126215e-07
0.3946941.7716831.048675e-07
0.3966621.7711439.707475e-08
0.398641.7706098.924319e-08
0.41.7702478.385500e-08
0.4006271.7700818.281010e-08
0.4026241.7695617.948070e-08
0.4046311.7690467.613470e-08
0.4066481.7685387.277202e-08
0.4086751.7680356.939257e-08
0.4107131.7675396.599628e-08
0.412761.7670496.258306e-08
0.4148181.7665645.915282e-08
0.4168861.7660855.570548e-08
0.4189641.7656125.224096e-08
0.421.7653795.051400e-08
0.4210531.7651444.970745e-08
0.4231521.7646824.809919e-08
0.4252611.7642264.648291e-08
0.4273811.7637744.485858e-08
0.4295121.7633284.322615e-08
0.4316531.7628874.158558e-08
0.4338051.7624523.993683e-08
0.4359671.7620213.827986e-08
0.4381411.7615953.661463e-08
0.441.7612363.519000e-08
0.4403251.7611743.503609e-08
0.442521.7607583.399606e-08
0.4447261.7603473.295084e-08
0.4469431.759943.190041e-08
0.4491711.7595383.084475e-08
0.451411.7591412.978383e-08
0.4536611.7587482.871761e-08
0.4559221.7583592.764608e-08
0.4581951.7579752.656921e-08
0.461.7576742.571400e-08
0.4604791.7575952.555664e-08
0.4627751.7572192.480278e-08
0.4650821.7568482.404517e-08
0.46741.756482.328377e-08
0.469731.7561172.251858e-08
0.4720721.7557582.174957e-08
0.4744251.7554022.097673e-08
0.476791.7550512.020004e-08
0.4791671.7547031.941948e-08
0.481.7545831.914600e-08
0.4815561.754361.858656e-08
0.4839571.7540191.772341e-08
0.4863691.7536831.685596e-08
0.4887941.753351.598419e-08
0.4912311.7530211.510807e-08
0.4936791.7526961.422759e-08
0.496141.7523741.334271e-08
0.4986141.7520551.245342e-08
0.51.7518791.195500e-08
0.5010991.751741.188480e-08
0.5035971.7514281.172529e-08
0.5061081.7511191.156498e-08
0.5086311.7508141.140388e-08
0.5111671.7505121.124197e-08
0.5137151.7502131.107925e-08
0.5162761.7499171.091573e-08
0.5188491.7496241.075138e-08
0.5214361.7493351.058622e-08
0.5240351.7490481.042024e-08
0.5266481.7487641.025343e-08
0.5292731.7484841.008578e-08
0.5319121.7482069.917305e-09
0.5345631.7479319.747986e-09
0.5372281.7476599.577823e-09
0.5399061.7473899.406812e-09
0.5425981.7471239.234948e-09
0.5453031.7468599.062228e-09
0.5480211.7465978.888646e-09
0.551.746418.762300e-09
0.5507531.7463398.846408e-09
0.5534991.7460839.152964e-09
0.5562581.7458299.461048e-09
0.5590311.7455789.770667e-09
0.5618181.745331.008183e-08
0.5646191.7450841.039454e-08
0.5674331.744841.070882e-08
0.5702621.7445991.102466e-08
0.5731051.744361.134207e-08
0.5759621.7441231.166107e-08
0.5788331.7438891.198166e-08
0.5817191.7436571.230384e-08
0.5846191.7434281.262763e-08
0.5875331.74321.295304e-08
0.5904621.7429751.328007e-08
0.5934061.7427521.360872e-08
0.5963641.7425311.393902e-08
0.5993371.7423121.427096e-08
0.61.7422631.434500e-08
0.6023251.7420951.415949e-08
0.6053271.741881.391988e-08
0.6083451.7416671.367907e-08
0.6113781.7414561.343706e-08
0.6144261.7412481.319384e-08
0.6174891.7410411.294942e-08
0.6205671.7408361.270377e-08
0.623661.7406321.245690e-08
0.6267691.7404311.220880e-08
0.6298941.7402321.195946e-08
0.6330341.7400341.170888e-08
0.636191.7398381.145705e-08
0.6393611.7396441.120396e-08
0.6425491.7394521.094962e-08
0.6457521.7392611.069400e-08
0.6489711.7390721.043711e-08
0.651.7390121.035500e-08
0.6522061.7388851.039017e-08
0.6554581.7386991.044199e-08
0.6587251.7385151.049408e-08
0.6620091.7383331.054642e-08
0.6653091.7381521.059903e-08
0.6686261.7379721.065190e-08
0.6719591.7377941.070503e-08
0.6753091.7376181.075842e-08
0.6786751.7374431.081209e-08
0.6820591.737271.086601e-08
0.6854591.7370981.092021e-08
0.6888761.7369281.097468e-08
0.692311.7367581.102942e-08
0.6957611.7365911.108444e-08
0.699231.7364241.113972e-08
0.71.7363881.115200e-08
0.7027161.7362591.119526e-08
0.7062191.7360961.125106e-08
0.7097391.7359331.130715e-08
0.7132771.7357721.136351e-08
0.7168331.7356121.142015e-08
0.7204071.7354541.147708e-08
0.7239981.7352971.153429e-08
0.7276071.735141.159179e-08
0.7312351.7349851.164957e-08
0.734881.7348321.170764e-08
0.7385431.7346791.176600e-08
0.7422251.7345281.182465e-08
0.7459251.7343771.188359e-08
0.7496441.7342281.194283e-08
0.7533811.734081.200236e-08
0.7571371.7339331.206219e-08
0.7609111.7337871.212231e-08
0.7647041.7336421.218274e-08
0.7685161.7334981.224347e-08
0.7723481.7333551.230450e-08
0.7761981.7332131.236583e-08
0.7800671.7330721.242747e-08
0.7839561.7329321.248942e-08
0.7878641.7327931.255168e-08
0.7917921.7326541.261424e-08
0.7957391.7325171.267712e-08
0.7997061.7323811.274031e-08
0.81.7323711.274500e-08
0.8036931.7322451.280382e-08
0.8076991.7321111.286765e-08
0.8117261.7319771.293179e-08
0.8157721.7318441.299625e-08
0.8198391.7317121.306103e-08
0.8239261.731581.312614e-08
0.8280331.731451.319157e-08
0.8321611.731321.325733e-08
0.836311.7311911.332341e-08
0.8404791.7310631.338983e-08
0.8446691.7309351.345657e-08
0.8488791.7308081.352365e-08
0.8531111.7306821.359106e-08
0.8573641.7305571.365881e-08
0.8616381.7304321.372690e-08
0.8659341.7303081.379532e-08
0.870251.7301841.386409e-08
0.8745891.7300611.393320e-08
0.8789491.7299391.400265e-08
0.883331.7298181.407245e-08
0.8877341.7296971.414260e-08
0.8921591.7295761.421310e-08
0.8966071.7294561.428395e-08
0.91.7293651.433800e-08
0.9010771.7293371.444104e-08
0.9055691.7292181.487097e-08
0.9100831.72911.530304e-08
0.914621.7289821.573727e-08
0.9191791.7288651.617366e-08
0.9237621.7287481.661222e-08
0.9283671.7286321.705298e-08
0.9329951.7285161.749593e-08
0.9376461.7284011.794108e-08
0.942321.7282861.838846e-08
0.9470181.7281711.883807e-08
0.9517391.7280571.928992e-08
0.9564831.7279431.974402e-08
0.9612521.727832.020038e-08
0.9660441.7277172.065902e-08
0.9708591.7276042.111995e-08
0.9756991.7274922.158318e-08
0.9805631.727382.204871e-08
0.9854521.7272692.251656e-08
0.9903641.7271572.298675e-08
0.9953011.7270472.345928e-08
11.7269422.390900e-08
1.000261.7269362.391529e-08
1.005251.7268262.403451e-08
1.010261.7267152.415433e-08
1.01531.7266062.427475e-08
1.020361.7264962.439577e-08
1.025451.7263872.451739e-08
1.030561.7262772.463962e-08
1.035691.7261682.476246e-08
1.040861.726062.488591e-08
1.046051.7259512.500997e-08
1.051261.7258432.513465e-08
1.05651.7257352.525996e-08
1.061771.7256262.538589e-08
1.067061.7255192.551245e-08
1.072381.7254112.563963e-08
1.077731.7253032.576746e-08
1.08311.7251952.589592e-08
1.08851.7250882.602502e-08
1.093931.724982.615476e-08
1.099381.7248732.628515e-08
1.104861.7247662.641619e-08
1.110371.7246592.654788e-08
1.11591.7245512.668023e-08
1.121471.7244442.681324e-08
1.127061.7243372.694692e-08
1.132671.724232.708125e-08
1.138321.7241232.721626e-08
1.1441.7240152.735195e-08
1.14971.7239082.748830e-08
1.155431.7238012.762534e-08
1.161191.7236932.776306e-08
1.166981.7235862.790147e-08
1.17281.7234782.804057e-08
1.178641.7233712.818036e-08
1.184521.7232632.832085e-08
1.190421.7231552.846204e-08
1.196361.7230472.860393e-08
1.21.7229812.869100e-08
1.202321.7229392.952742e-08
1.208321.7228313.168604e-08
1.214341.7227233.385542e-08
1.220391.7226143.603561e-08
1.226481.7225053.822668e-08
1.232591.7223964.042866e-08
1.238741.7222874.264163e-08
1.244911.7221784.486562e-08
1.251121.7220684.710071e-08
1.257351.7219584.934693e-08
1.263621.7218485.160435e-08
1.269921.7217385.387303e-08
1.276251.7216275.615302e-08
1.282611.7215165.844437e-08
1.289011.7214056.074714e-08
1.295431.7212936.306140e-08
1.301891.7211816.538719e-08
1.308381.7210696.772458e-08
1.314911.7209567.007361e-08
1.321461.7208437.243436e-08
1.328051.720737.480688e-08
1.334671.7206167.719122e-08
1.341321.7205027.958745e-08
1.348011.7203888.199563e-08
1.354731.7202738.441581e-08
1.361481.7201578.684806e-08
1.368271.7200418.929243e-08
1.375091.7199259.174899e-08
1.381951.7198089.421779e-08
1.388831.7196919.669890e-08
1.395761.7195739.919238e-08
1.41.7195011.007200e-07
1.402721.7194541.009154e-07
1.409711.7193361.014186e-07
1.416741.7192161.019242e-07
1.42381.7190961.024324e-07
1.43091.7189761.029431e-07
1.438031.7188551.034563e-07
1.44521.7187331.039721e-07
1.45241.718611.044905e-07
1.459641.7184871.050114e-07
1.466921.7183641.055349e-07
1.474231.718241.060611e-07
1.481581.7181151.065899e-07
1.488971.7179891.071213e-07
1.496391.7178631.076554e-07
1.503851.7177361.081921e-07
1.511351.7176081.087315e-07
1.518881.717481.092736e-07
1.526451.717351.098184e-07
1.534061.717221.103659e-07
1.541711.717091.109161e-07
1.54941.7169581.114691e-07
1.557121.7168261.120249e-07
1.564881.7166921.125834e-07
1.572681.7165581.131447e-07
1.580521.7164241.137088e-07
1.58841.7162881.142757e-07
1.596321.7161511.148454e-07
1.61.7160881.151100e-07
1.604281.7160141.188395e-07
1.612281.7158751.258082e-07
1.620321.7157361.328116e-07
1.628391.7155951.398499e-07
1.636511.7154541.469234e-07
1.644671.7153121.540321e-07
1.652871.7151681.611762e-07
1.661111.7150241.683559e-07
1.669391.7148791.755714e-07
1.677711.7147321.828229e-07
1.686071.7145851.901106e-07
1.694481.7144361.974346e-07
1.702931.7142862.047951e-07
1.711421.7141362.121922e-07
1.719951.7139842.196263e-07
1.728521.7138312.270974e-07
1.737141.7136762.346058e-07
1.74581.7135212.421516e-07
1.75451.7133642.497350e-07
1.763251.7132062.573562e-07
1.772041.7130472.650154e-07
1.780871.7128872.727128e-07
1.789751.7127252.804486e-07
1.798671.7125622.882229e-07
1.81.7125382.893800e-07
1.807641.7123983.075906e-07
1.816651.7122323.290737e-07
1.825711.7120653.506638e-07
1.834811.7118963.723616e-07
1.843951.7117263.941675e-07
1.853151.7115554.160821e-07
1.862391.7113824.381060e-07
1.871671.7112084.602397e-07
1.8811.7110334.824837e-07
1.890381.7108555.048386e-07
1.89981.7106775.273049e-07
1.909271.7104965.498833e-07
1.918791.7103145.725742e-07
1.928351.7101315.953782e-07
1.937971.7099466.182959e-07
1.947631.7097596.413279e-07
1.957341.7095716.644746e-07
1.96711.709386.877368e-07
1.97691.7091897.111149e-07
1.986761.7089957.346096e-07
1.996661.70887.582214e-07
21.7087347.661800e-07
2.006621.7086028.214812e-07
2.016621.7084039.051045e-07
2.026671.7082039.891447e-07
2.036771.7081.073604e-06
2.046931.7077951.158484e-06
2.057131.7075891.243787e-06
2.067391.707381.329516e-06
2.077691.707171.415672e-06
2.088051.7069571.502257e-06
2.098461.7067431.589274e-06
2.108921.7065261.676725e-06
2.119441.7063081.764612e-06
2.131.7060871.852937e-06
2.140621.7058641.941702e-06
2.151291.7056392.030910e-06
2.162021.7054122.120563e-06
2.172791.7051822.210662e-06
2.183621.704952.301211e-06
2.194511.7047162.392211e-06
2.21.7045982.438100e-06
2.205451.704482.620467e-06
2.216451.7042412.988326e-06
2.227491.7043.358019e-06
2.23861.7037563.729555e-06
2.249761.703514.102943e-06
2.260971.7032624.478193e-06
2.272251.703014.855313e-06
2.283571.7027575.234313e-06
2.294961.70255.615202e-06
2.30641.7022425.997991e-06
2.317891.701986.382687e-06
2.329451.7017166.769302e-06
2.341061.7014497.157844e-06
2.352731.7011797.548322e-06
2.364461.7009067.940747e-06
2.376251.7006318.335129e-06
2.38811.7003528.731477e-06
2.41.7000719.129800e-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
—