Optical constants

Refractive index of S-FPL53 (OHARA)

S-FPL53: n,k 0.28–2.4 µm

Data
formula 2 + tabulated k
Range
0.28–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.28–2.4 µm
Refractive index n
1.43875
Extinction coefficient k
8.27428e-09
Permittivity ε1
2.07
Permittivity ε2
2.38092e-08
Absorption coefficient α
0.00176953 cm⁻¹
Penetration depth δ = λ/(2πk)
1.13024e+10 nm
Abbe number Vd
94.946
Chromatic dispersion dn/dλ
-0.023973 µm⁻¹
Group index ng
1.45284
Group velocity dispersion
40.9581 fs²/mm
Dispersion parameter D
-223.448 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-FPL53 (OHARA): S-FPL53
ohara_s_fpl53 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-FPL53", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_fpl53.range_nm)  # (280, 2400) nm
eps = ohara_s_fpl53.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=0.983532327λ2λ2−0.00492234955+0.069568814λ2λ2−0.0193581091+1.11409238λ2λ2−264.275294

Valid from 0.28 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C20.983532327
C30.00492234955
C40.069568814
C50.0193581091
C61.11409238
C7264.275294

Comments and conditions

Recommended -The unique relative partial dispersion.

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: -2.22e-05 -1.06e-08 -4.91e-11 2.77e-07 3.92e-10 0.206
nd
1.438750
Vd
94.946025
glass code
439950
density
value: 3620
thermal expansion
value: 1.45e-05, temperature range: 243 343; value: 1.69e-05, temperature range: 293 573
dPgF
0.0461
resistance
acid: 52.3; climatic: 3.0; phosphate: 4.3

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = -7.95e-06 K⁻¹ at 633 nm, dn/dT = -8.08e-06 K⁻¹ at 1310 nm, dn/dT = -8.07e-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 430 wavelengths, the same grid as the API and the library
S-FPL53 (OHARA), S-FPL53: n and k versus wavelength
λ (µm)nk
0.281.4633767.172200e-06
0.2815121.4630076.827644e-06
0.2830321.4626436.481228e-06
0.284561.4622846.132942e-06
0.2860961.461935.782775e-06
0.2876411.461585.430718e-06
0.2891941.4612355.076760e-06
0.291.4610594.893000e-06
0.2907551.4608954.752999e-06
0.2923251.4605594.461957e-06
0.2939031.4602284.169343e-06
0.295491.4599013.875150e-06
0.2970851.4595783.579368e-06
0.2986891.4592593.281989e-06
0.31.4590033.039000e-06
0.3003021.4589452.997384e-06
0.3019231.4586342.773978e-06
0.3035531.4583282.549366e-06
0.3051921.4580252.323541e-06
0.306841.4577272.096497e-06
0.3084971.4574321.868227e-06
0.311.4571691.661100e-06
0.3101621.4571411.648288e-06
0.3118371.4568541.516170e-06
0.3135211.456571.383338e-06
0.3152131.456291.249789e-06
0.3169151.4560131.115519e-06
0.3186261.455749.805245e-07
0.321.4555258.721400e-07
0.3203471.4554718.567073e-07
0.3220761.4552057.796791e-07
0.3238151.4549427.022349e-07
0.3255631.4546826.243726e-07
0.3273211.4544265.460899e-07
0.3290881.4541724.673846e-07
0.331.4540444.267800e-07
0.3308651.4539224.073502e-07
0.3326511.4536753.672267e-07
0.3344471.4534323.268866e-07
0.3362531.4531912.863286e-07
0.3380691.4529532.455517e-07
0.3398941.4527182.045546e-07
0.341.4527042.021700e-07
0.3417291.4524851.833752e-07
0.3435741.4522561.633185e-07
0.3454291.4520291.431536e-07
0.3472941.4518061.228798e-07
0.3491691.4515851.024965e-07
0.351.4514889.346300e-08
0.3510541.4513668.817456e-08
0.352951.451157.866627e-08
0.3548551.4509376.910664e-08
0.3567711.4507265.949539e-08
0.3586971.4505184.983226e-08
0.361.450384.329700e-08
0.3606341.4503134.205157e-08
0.3625811.450113.822612e-08
0.3645391.4499093.438003e-08
0.3665071.449713.051316e-08
0.3684861.4495142.662542e-08
0.371.4493672.365000e-08
0.3704751.4493212.310228e-08
0.3724751.4491292.079603e-08
0.3744861.448941.847732e-08
0.3765081.4487531.614610e-08
0.3785411.4485691.380228e-08
0.381.4484381.212000e-08
0.3805851.4483861.195655e-08
0.382641.4482061.138215e-08
0.3847051.4480271.080465e-08
0.3867821.4478511.022403e-08
0.3888711.4476779.640274e-09
0.391.4475849.324600e-09
0.390971.4475059.657735e-09
0.3930811.4473351.038248e-08
0.3952031.4471661.111114e-08
0.3973371.4471.184374e-08
0.3994821.4468361.258029e-08
0.41.4467971.275800e-08
0.4016391.4466731.308544e-08
0.4038081.4465131.351859e-08
0.4059881.4463541.395408e-08
0.408181.4461971.439193e-08
0.4103841.4460421.483214e-08
0.4125991.4458891.527472e-08
0.4148271.4457371.571969e-08
0.4170671.4455871.616707e-08
0.4193181.4454391.661686e-08
0.421.4453951.675300e-08
0.4215821.4452921.681614e-08
0.4238591.4451471.690696e-08
0.4261471.4450041.699826e-08
0.4284481.4448631.709007e-08
0.4307611.4447231.718236e-08
0.4330871.4445841.727516e-08
0.4354251.4444471.736846e-08
0.4377761.4443121.746226e-08
0.441.4441861.755100e-08
0.4401391.4441781.753093e-08
0.4425161.4440461.718885e-08
0.4449051.4439151.684493e-08
0.4473071.4437851.649915e-08
0.4497221.4436571.615151e-08
0.452151.443531.580199e-08
0.4545911.4434051.545058e-08
0.4570461.4432811.509727e-08
0.4595131.4431591.474206e-08
0.461.4431351.467200e-08
0.4619941.4430381.435331e-08
0.4644891.4429181.395472e-08
0.4669961.4427991.355397e-08
0.4695181.4426821.315106e-08
0.4720531.4425661.274597e-08
0.4746011.4424511.233870e-08
0.4771641.4423381.192923e-08
0.479741.4422251.151754e-08
0.481.4422141.147600e-08
0.482331.4421141.106702e-08
0.4849341.4420041.060995e-08
0.4875531.4418961.015042e-08
0.4901851.4417889.688409e-09
0.4928311.4416829.223901e-09
0.4954921.4415768.756885e-09
0.4981671.4414728.287348e-09
0.51.4414027.965700e-09
0.5008571.4413697.904221e-09
0.5035611.4412677.710240e-09
0.506281.4411667.515213e-09
0.5090131.4410667.319132e-09
0.5117621.4409687.121993e-09
0.5145251.440876.923789e-09
0.5173031.4407736.724515e-09
0.5200961.4406776.524165e-09
0.5229041.4405836.322734e-09
0.5257271.4404896.120215e-09
0.5285651.4403965.916603e-09
0.5314191.4403045.711891e-09
0.5342881.4402135.506074e-09
0.5371731.4401235.299146e-09
0.5400731.4400345.091101e-09
0.5429891.4399464.881932e-09
0.5459211.4398594.671634e-09
0.5488681.4397724.460201e-09
0.551.4397394.379000e-09
0.5518311.4396874.568730e-09
0.5548111.4396024.877387e-09
0.5578061.4395185.187711e-09
0.5608181.4394355.499711e-09
0.5638461.4393535.813395e-09
0.566891.4392726.128772e-09
0.5699511.4391916.445852e-09
0.5730281.4391116.764644e-09
0.5761221.4390327.085158e-09
0.5792321.4389547.407402e-09
0.582361.4388777.731385e-09
0.5855041.43888.057118e-09
0.5886651.4387248.384610e-09
0.5918431.4386498.713869e-09
0.5950391.4385749.044907e-09
0.5982511.43859.377731e-09
0.61.4384619.558900e-09
0.6014811.4384279.736118e-09
0.6047291.4383551.012465e-08
0.6079941.4382831.051528e-08
0.6112761.4382121.090801e-08
0.6145771.4381421.130287e-08
0.6178951.4380721.169986e-08
0.6212311.4380031.209899e-08
0.6245851.4379341.250028e-08
0.6279571.4378671.290373e-08
0.6313471.4377991.330937e-08
0.6347561.4377331.371719e-08
0.6381831.4376671.412721e-08
0.6416291.4376011.453945e-08
0.6450931.4375361.495391e-08
0.6485761.4374721.537061e-08
0.651.4374461.554100e-08
0.6520781.4374081.535863e-08
0.6555981.4373451.504959e-08
0.6591381.4372831.473888e-08
0.6626971.4372211.442650e-08
0.6662741.4371591.411243e-08
0.6698721.4370981.379666e-08
0.6734881.4370381.347918e-08
0.6771251.4369781.316000e-08
0.680781.4369181.283909e-08
0.6844561.4368591.251645e-08
0.6881521.4368011.219206e-08
0.6918671.4367431.186593e-08
0.6956021.4366851.153803e-08
0.6993581.4366281.120836e-08
0.71.4366191.115200e-08
0.7031341.4365721.120192e-08
0.706931.4365161.126240e-08
0.7107471.436461.132320e-08
0.7145841.4364051.138433e-08
0.7184421.436351.144579e-08
0.7223211.4362961.150758e-08
0.7262211.4362421.156970e-08
0.7301421.4361881.163216e-08
0.7340841.4361351.169496e-08
0.7380471.4360821.175810e-08
0.7420321.436031.182157e-08
0.7460391.4359781.188539e-08
0.7500661.4359261.194956e-08
0.7541161.4358751.201407e-08
0.7581881.4358241.207893e-08
0.7622811.4357741.214414e-08
0.7663971.4357241.220970e-08
0.7705351.4356741.227562e-08
0.7746951.4356241.234189e-08
0.7788771.4355751.240852e-08
0.7830831.4355271.247551e-08
0.787311.4354781.254286e-08
0.7915611.435431.261057e-08
0.7958351.4353821.267865e-08
0.81.4353361.274500e-08
0.8001321.4353351.275655e-08
0.8044521.4352871.313555e-08
0.8087951.435241.351658e-08
0.8131621.4351941.389968e-08
0.8175521.4351471.428484e-08
0.8219661.4351011.467208e-08
0.8264041.4350561.506141e-08
0.8308661.435011.545285e-08
0.8353521.4349651.584640e-08
0.8398621.434921.624207e-08
0.8443961.4348751.663988e-08
0.8489551.434831.703984e-08
0.8535391.4347861.744195e-08
0.8581471.4347421.784624e-08
0.862781.4346981.825271e-08
0.8674381.4346541.866138e-08
0.8721221.4346111.907225e-08
0.876831.4345681.948534e-08
0.8815651.4345251.990066e-08
0.8863241.4344822.031822e-08
0.8911091.4344392.073803e-08
0.8959211.4343972.116012e-08
0.91.4343612.151800e-08
0.9007581.4343552.153612e-08
0.9056211.4343132.165240e-08
0.9105111.4342712.176931e-08
0.9154261.4342292.188685e-08
0.9203691.4341882.200502e-08
0.9253381.4341462.212383e-08
0.9303341.4341052.224329e-08
0.9353571.4340642.236338e-08
0.9404071.4340232.248413e-08
0.9454841.4339822.260553e-08
0.9505891.4339422.272758e-08
0.9557211.4339012.285030e-08
0.9608811.4338612.297367e-08
0.9660691.433822.309772e-08
0.9712851.433782.322243e-08
0.9765291.433742.334781e-08
0.9818011.43372.347387e-08
0.9871021.433662.360062e-08
0.9924321.4336212.372804e-08
0.997791.4335812.385616e-08
11.4335652.390900e-08
1.003181.4335412.383289e-08
1.008591.4335022.370315e-08
1.014041.4334632.357270e-08
1.019511.4334232.344155e-08
1.025021.4333842.330969e-08
1.030551.4333452.317712e-08
1.036121.4333062.304384e-08
1.041711.4332672.290983e-08
1.047331.4332272.277510e-08
1.052991.4331882.263964e-08
1.058671.4331492.250346e-08
1.064391.4331112.236653e-08
1.070141.4330722.222887e-08
1.075911.4330332.209046e-08
1.081721.4329942.195131e-08
1.087561.4329552.181141e-08
1.093441.4329162.167075e-08
1.099341.4328772.152933e-08
1.105271.4328392.138714e-08
1.111241.43282.124419e-08
1.117241.4327612.110047e-08
1.123271.4327222.095597e-08
1.129341.4326832.081070e-08
1.135441.4326442.066463e-08
1.141571.4326052.051778e-08
1.147731.4325662.037014e-08
1.153931.4325272.022170e-08
1.160161.4324882.007245e-08
1.166421.4324491.992240e-08
1.172721.432411.977155e-08
1.179051.4323711.961987e-08
1.185421.4323321.946738e-08
1.191821.4322931.931407e-08
1.198251.4322531.915992e-08
1.21.4322431.911800e-08
1.204721.4322141.919318e-08
1.211221.4321741.929679e-08
1.217761.4321351.940097e-08
1.224341.4320951.950570e-08
1.230951.4320551.961101e-08
1.237591.4320151.971688e-08
1.244281.4319751.982332e-08
1.250991.4319351.993034e-08
1.257751.4318952.003793e-08
1.264541.4318552.014611e-08
1.271371.4318142.025487e-08
1.278231.4317742.036421e-08
1.285131.4317332.047415e-08
1.292071.4316922.058468e-08
1.299051.4316512.069581e-08
1.306061.431612.080753e-08
1.313111.4315692.091986e-08
1.32021.4315282.103280e-08
1.327331.4314862.114635e-08
1.33451.4314442.126051e-08
1.34171.4314032.137528e-08
1.348941.431362.149068e-08
1.356231.4313182.160670e-08
1.363551.4312762.172334e-08
1.370911.4312332.184062e-08
1.378311.431192.195853e-08
1.385751.4311472.207707e-08
1.393241.4311042.219626e-08
1.41.4310652.230400e-08
1.400761.4310612.231609e-08
1.408321.4310172.243656e-08
1.415931.4309732.255769e-08
1.423571.4309292.267947e-08
1.431261.4308852.280190e-08
1.438981.430842.292500e-08
1.446751.4307952.304876e-08
1.454561.430752.317320e-08
1.462421.4307052.329830e-08
1.470311.4306592.342408e-08
1.478251.4306132.355053e-08
1.486231.4305672.367767e-08
1.494261.4305212.380550e-08
1.502321.4304742.393402e-08
1.510431.4304272.406323e-08
1.518591.430382.419314e-08
1.526791.4303322.432375e-08
1.535031.4302842.445506e-08
1.543321.4302362.458709e-08
1.551651.4301882.471982e-08
1.560031.4301392.485328e-08
1.568451.430092.498745e-08
1.576921.430042.512235e-08
1.585431.429992.525797e-08
1.593991.429942.539433e-08
1.61.4299052.549000e-08
1.60261.429892.553144e-08
1.611251.4298392.566932e-08
1.619951.4297882.580794e-08
1.62871.4297362.594731e-08
1.637491.4296842.608744e-08
1.646331.4296322.622832e-08
1.655221.4295792.636996e-08
1.664161.4295262.651236e-08
1.673141.4294722.665554e-08
1.682181.4294182.679949e-08
1.691261.4293642.694421e-08
1.700391.4293092.708972e-08
1.709571.4292542.723601e-08
1.71881.4291982.738309e-08
1.728081.4291422.753097e-08
1.737411.4290852.767964e-08
1.746791.4290282.782912e-08
1.756221.4289712.797940e-08
1.76571.4289132.813049e-08
1.775241.4288542.828241e-08
1.784821.4287952.843514e-08
1.794461.4287362.858869e-08
1.81.4287012.867700e-08
1.804151.4286762.874306e-08
1.813891.4286152.889823e-08
1.823681.4285542.905423e-08
1.833531.4284932.921108e-08
1.843431.4284312.936878e-08
1.853381.4283682.952733e-08
1.863391.4283052.968673e-08
1.873451.4282412.984700e-08
1.883561.4281773.000813e-08
1.893731.4281123.017013e-08
1.903951.4280473.033300e-08
1.914231.4279813.049675e-08
1.924571.4279143.066139e-08
1.934961.4278473.082692e-08
1.945411.4277793.099334e-08
1.955911.4277113.116066e-08
1.966471.4276423.132888e-08
1.977091.4275723.149801e-08
1.987761.4275023.166805e-08
1.998491.4274313.183902e-08
21.4274213.186300e-08
2.009281.4273593.282566e-08
2.020131.4272873.395046e-08
2.031041.4272133.508134e-08
2.042011.427143.621832e-08
2.053031.4270653.736144e-08
2.064111.426993.851073e-08
2.075261.4269143.966623e-08
2.086461.4268384.082796e-08
2.097731.426764.199597e-08
2.109051.4266824.317028e-08
2.120441.4266034.435094e-08
2.131891.4265244.553797e-08
2.14341.4264434.673140e-08
2.154971.4263624.793128e-08
2.166611.426284.913764e-08
2.17831.4261975.035052e-08
2.190071.4261145.156994e-08
2.21.4260435.260000e-08
2.201891.4260295.246427e-08
2.213781.4259445.161040e-08
2.225731.4258575.075192e-08
2.237751.425774.988881e-08
2.249831.4256824.902104e-08
2.261981.4255944.814858e-08
2.274191.4255044.727141e-08
2.286471.4254134.638951e-08
2.298811.4253224.550285e-08
2.311221.4252294.461139e-08
2.32371.4251364.371513e-08
2.336251.4250414.281402e-08
2.348861.4249464.190806e-08
2.361541.4248494.099720e-08
2.374291.4247524.008142e-08
2.387111.4246533.916069e-08
2.41.4245543.823500e-08

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
—