Optical constants

Refractive index of C3H7OH (Propanol)

Sani and Dell'Oro 2016: iso-propanol; Dispersion formula; n,k 0.185–2.8 µm

Data
formula 2 + tabulated k
Range
0.185–2.8 µm
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength. Note: k data cover 185.185-2799.1 nm only; k = 0 elsewhere in the n range 185-2800 nm.

At one wavelength

Range 0.185–2.8 µm
Refractive index n
1.3772
Extinction coefficient k
6.59472e-08
Permittivity ε1
1.89669
Permittivity ε2
1.81645e-07
Absorption coefficient α
0.0141034 cm⁻¹
Penetration depth δ = λ/(2πk)
1.41810e+09 nm
Abbe number Vd
55.61
Chromatic dispersion dn/dλ
-0.0348489 µm⁻¹
Group index ng
1.39768
Group velocity dispersion
64.7836 fs²/mm
Dispersion parameter D
-353.429 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

# C3H7OH (Propanol): Sani and Dell'Oro 2016: iso-propanol; Dispersion formula; n,k 0.185–2.8 µm
c3h7oh = ls.fetch_refractiveindex("organic", "propanol", "Sani-formula", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c3h7oh.range_nm)  # (185, 2800) nm
eps = c3h7oh.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=0.0107λ2λ2−8.88+0.8702λ2λ2−0.01036

Valid from 0.185 to 2.8 µm.

Coefficients as stored
CiValue
C10.0
C20.0107
C38.88
C40.8702
C50.01036

Comments and conditions

Room temperature

Notes on the source data (kept exactly as published):
  • k data cover 185.185-2799.1 nm only; k = 0 elsewhere in the n range 185-2800 nm

References

E. Sani and A. Dell'Oro. Spectral optical constants of ethanol and isopropanol from ultraviolet to far infrared. Opt. Mater. 60, 137-141 (2016)

Cite

Elisa Sani and Aldo Dell'Oro. Spectral optical constants of ethanol and isopropanol from ultraviolet to far infrared. Optical Materials, 60, 137-141 (2016), doi:10.1016/j.optmat.2016.06.041; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 1015 wavelengths, the same grid as the API and the library
C3H7OH (Propanol), Sani and Dell'Oro 2016: iso-propanol; Dispersion formula; n,k 0.185–2.8 µm: n and k versus wavelength
λ (µm)nk
0.1851.4993060
0.1851851.4989463.410680e-05
0.1857261.4979014.432880e-05
0.1862641.4968756.165069e-05
0.186271.4968636.184160e-05
0.1868171.4958348.677080e-05
0.1873681.4948110.000200315
0.1875371.49450.0002484419
0.1879211.4937970.000358004
0.1884781.4927890.000345052
0.1888181.492180.0003206203
0.1890391.4917870.000304761
0.1896021.4907940.000274416
0.1901081.4899130.0002460048
0.1901691.4898080.000242601
0.190741.4888280.000207327
0.1913141.4878550.000179545
0.1914071.4876980.0001760598
0.1918911.486890.000157994
0.1924721.4859310.000139763
0.1927151.4855330.0001326888
0.1930561.4849790.000122773
0.1936441.4840340.000110234
0.1940321.4834170.00010314
0.1942361.4830949.940870e-05
0.1948311.4821629.118190e-05
0.1953581.4813478.490165e-05
0.1954291.4812388.405190e-05
0.1960321.4803187.747840e-05
0.1966381.4794067.310390e-05
0.1966931.4793247.275829e-05
0.1972481.4784996.924080e-05
0.1978621.4775996.612630e-05
0.1980371.4773456.540095e-05
0.1984791.4767066.356210e-05
0.1991011.4758186.124220e-05
0.199391.4754096.037454e-05
0.1997261.4749375.936370e-05
0.2003551.4740625.747780e-05
0.2007521.4735165.629309e-05
0.2009891.4731925.558620e-05
0.2016261.4723295.379500e-05
0.2021241.4716635.242818e-05
0.2022671.4714725.203490e-05
0.2029131.470625.031580e-05
0.2035051.4698494.877581e-05
0.2035621.4697754.862710e-05
0.2042161.4689354.693820e-05
0.2048741.4681024.523910e-05
0.2048951.4680754.517934e-05
0.2055361.4672744.338660e-05
0.2062031.466454.151440e-05
0.2062951.4663374.126191e-05
0.2068741.4656333.968020e-05
0.2075491.4648223.781220e-05
0.2077051.4646363.738272e-05
0.2082281.4640173.594220e-05
0.2089121.4632173.408380e-05
0.2091241.4629713.354846e-05
0.2096011.4624223.234520e-05
0.2102941.4616333.072530e-05
0.2105531.461343.017527e-05
0.2109921.4608482.924330e-05
0.2116941.460072.768310e-05
0.2119921.4597432.713096e-05
0.2124021.4592952.637010e-05
0.2131131.4585282.528640e-05
0.213441.4581782.488784e-05
0.213831.4577652.441310e-05
0.2145511.4570072.369170e-05
0.2148991.4566462.339156e-05
0.2152781.4562542.306400e-05
0.2160091.4555062.251270e-05
0.2163671.4551442.228400e-05
0.2167451.4547642.204250e-05
0.2174871.4540262.161090e-05
0.2178451.4536732.142297e-05
0.2182331.4532932.121970e-05
0.2189851.4525652.087280e-05
0.2193341.4522312.072817e-05
0.2197411.4518432.055940e-05
0.2205031.4511252.025570e-05
0.2208331.4508172.012715e-05
0.2212711.4504111.995610e-05
0.2220431.4497031.965510e-05
0.2223411.4494321.953952e-05
0.2228211.4489991.935380e-05
0.2236051.44831.904300e-05
0.2238611.4480741.893931e-05
0.2243941.4476061.872300e-05
0.2251881.4469171.839600e-05
0.225391.4467421.831260e-05
0.2259891.4462311.806570e-05
0.2267951.445551.771150e-05
0.226931.4454371.764618e-05
0.2276061.4448751.732000e-05
0.2284241.4442031.686950e-05
0.2284811.4441571.683329e-05
0.2292481.4435361.634500e-05
0.2300421.4429011.576647e-05
0.2300771.4428741.574100e-05
0.2309121.4422161.506340e-05
0.2316141.441671.446522e-05
0.2317541.4415621.434580e-05
0.2326021.4409121.363030e-05
0.2331961.4404621.315926e-05
0.2334561.4402671.295360e-05
0.2343161.4396261.232810e-05
0.234791.4392771.201450e-05
0.2351831.4389891.175430e-05
0.2360561.4383571.125090e-05
0.2363941.4381151.106934e-05
0.2369351.4377291.077890e-05
0.2378211.4371051.033650e-05
0.2380091.4369741.024575e-05
0.2387141.4364859.906260e-06
0.2396141.4358699.492990e-06
0.2396361.4358559.483818e-06
0.240521.4352589.108650e-06
0.2412731.4347568.818169e-06
0.2414331.4346518.756450e-06
0.2423531.4340478.447020e-06
0.2429221.4336788.293240e-06
0.243281.4334488.196300e-06
0.2442151.4328527.989460e-06
0.2445811.432627.912887e-06
0.2451561.432267.792810e-06
0.2461051.4316737.596960e-06
0.2462531.4315827.561448e-06
0.2470611.4310897.366940e-06
0.2479351.4305627.155602e-06
0.2480251.4305097.133890e-06
0.2489961.4299336.917910e-06
0.2496291.4295616.778529e-06
0.2499751.429366.702440e-06
0.2509611.4287926.532390e-06
0.2513351.4285796.484550e-06
0.2519561.4282276.405100e-06
0.2529581.4276666.308730e-06
0.2530521.4276146.305690e-06
0.2539681.4271096.276160e-06
0.2547811.4266666.284325e-06
0.2549871.4265556.286390e-06
0.2560131.4260066.351270e-06
0.2565221.4257366.409329e-06
0.2570481.4254596.469280e-06
0.2580911.4249176.589360e-06
0.2582751.4248226.613976e-06
0.2591431.4243786.730120e-06
0.260041.4239246.870375e-06
0.2602041.4238426.896070e-06
0.2612731.423317.093220e-06
0.2618171.4230437.184459e-06
0.2623511.4227827.274180e-06
0.2634371.4222577.476470e-06
0.2636051.4221777.514606e-06
0.2645331.4217367.724580e-06
0.2654071.4213267.950134e-06
0.2656381.4212188.009870e-06
0.2667531.4207038.317320e-06
0.267221.420498.456726e-06
0.2678761.4201938.652480e-06
0.269011.4196859.006850e-06
0.2690461.4196699.016770e-06
0.2701531.419189.322130e-06
0.2708841.4188629.509927e-06
0.2713051.418689.617960e-06
0.2724681.4181829.878520e-06
0.2727351.4180699.927009e-06
0.273641.4176881.009120e-05
0.2745991.417291.024786e-05
0.2748231.4171971.028450e-05
0.2760161.416711.050610e-05
0.2764751.4165241.059020e-05
0.2772191.4162251.072650e-05
0.2783641.4157711.095260e-05
0.2784331.4157441.096620e-05
0.2796571.4152671.116430e-05
0.2802661.4150321.124581e-05
0.2808931.4147921.132970e-05
0.2821391.414321.132870e-05
0.2821811.4143041.132329e-05
0.2833961.4138521.116730e-05
0.2841091.413591.099503e-05
0.2846651.4133871.086080e-05
0.2859451.4129251.048370e-05
0.2860511.4128871.046152e-05
0.2872371.4124661.021210e-05
0.2880051.4121961.006706e-05
0.288541.412019.966030e-06
0.2898551.4115589.685780e-06
0.2899731.4115179.653863e-06
0.2911821.4111089.326590e-06
0.2919541.410859.075634e-06
0.2925221.4106618.891130e-06
0.2938741.4102188.342040e-06
0.2939491.4101938.306062e-06
0.2952381.4097777.688680e-06
0.2959581.4095487.377341e-06
0.2966151.409347.092920e-06
0.297981.4089136.717444e-06
0.2980051.4089056.710520e-06
0.2994081.4084746.547870e-06
0.3000161.4082896.371571e-06
0.3008251.4080456.136900e-06
0.3020661.4076755.495821e-06
0.3022551.4076195.398080e-06
0.3036981.4071964.637770e-06
0.304131.4070714.432743e-06
0.3051561.4067763.945450e-06
0.3062081.4064773.573631e-06
0.3066271.4063593.425460e-06
0.3081131.4059453.015260e-06
0.30831.4058932.974281e-06
0.3096131.4055342.686730e-06
0.3104071.4053192.551667e-06
0.3111281.4051252.428910e-06
0.3125281.4047542.240860e-06
0.3126581.4047192.223340e-06
0.3142021.4043172.067810e-06
0.3146631.4041982.018979e-06
0.3157631.4039161.902480e-06
0.3168131.4036511.827721e-06
0.3173381.4035191.790350e-06
0.318931.4031251.668670e-06
0.3189781.4031131.664783e-06
0.3205381.4027331.537910e-06
0.3211571.4025831.503173e-06
0.3221621.4023441.446820e-06
0.3233521.4020631.377156e-06
0.3238021.4019571.350790e-06
0.3254591.4015741.289930e-06
0.3255611.401551.285512e-06
0.3271341.4011931.217460e-06
0.3277861.4010461.200682e-06
0.3288251.4008141.173920e-06
0.3300251.400551.124559e-06
0.3305341.4004391.103640e-06
0.3322621.4000661.047330e-06
0.332281.4000621.046401e-06
0.3340071.3996959.588460e-07
0.3345511.3995819.490284e-07
0.335771.3993289.270130e-07
0.3368371.3991088.517843e-07
0.3375531.3989628.012610e-07
0.3391381.3986437.646847e-07
0.3393541.39867.597050e-07
0.3411751.398246.941770e-07
0.3414551.3981856.852405e-07
0.3430151.3978836.355460e-07
0.3437891.3977346.122151e-07
0.3448761.3975285.794170e-07
0.3461381.3972915.713079e-07
0.3467561.3971765.673330e-07
0.3485031.3968545.292073e-07
0.3486571.3968265.258390e-07
0.350581.3964794.927000e-07
0.3508841.3964244.892944e-07
0.3525231.3961344.709290e-07
0.3532811.3960014.650624e-07
0.3544881.3957924.557300e-07
0.3556951.3955854.600995e-07
0.3564751.3954524.629210e-07
0.3581261.3951754.292323e-07
0.3584851.3951154.219010e-07
0.3605181.394782.165740e-07
0.3605731.3947712.163724e-07
0.3625731.3944482.090090e-07
0.3630361.3943742.076435e-07
0.3646521.3941182.028840e-07
0.3655171.3939822.004793e-07
0.3667551.393791.970380e-07
0.3680151.3935971.943194e-07
0.3688831.3934651.924450e-07
0.3705291.3932181.871761e-07
0.3710351.3931431.855570e-07
0.3730611.3928451.829721e-07
0.3732131.3928221.827780e-07
0.3754161.3925051.805450e-07
0.375611.3924771.802195e-07
0.3776461.3921891.768020e-07
0.3781761.3921151.753840e-07
0.3799021.3918761.707710e-07
0.380761.3917581.687466e-07
0.3821851.3915651.653870e-07
0.3833621.3914071.627914e-07
0.3844961.3912571.602910e-07
0.3859821.3910621.580103e-07
0.3868351.3909511.567000e-07
0.3886191.3907211.525485e-07
0.3892031.3906471.511890e-07
0.3912741.3903861.495956e-07
0.39161.3903451.493450e-07
0.3939481.3900561.473853e-07
0.3940261.3900461.473200e-07
0.3964831.3897491.447000e-07
0.3966391.3897311.445254e-07
0.398971.3894551.419260e-07
0.399351.389411.419696e-07
0.4014891.3891621.422150e-07
0.4020781.3890951.418641e-07
0.404041.3888721.406960e-07
0.4048261.3887841.405008e-07
0.4066241.3885841.400540e-07
0.4075921.3884781.395385e-07
0.4092411.3882991.386600e-07
0.4103771.3881771.387487e-07
0.4118921.3880151.388670e-07
0.4131811.387881.383644e-07
0.4145771.3877341.378200e-07
0.4160041.3875871.368283e-07
0.4172981.3874551.359290e-07
0.4188461.3872991.345924e-07
0.4200541.3871781.335500e-07
0.4217081.3870151.335737e-07
0.4228471.3869041.335900e-07
0.424591.3867361.332126e-07
0.4256781.3866311.329770e-07
0.4274911.386461.318105e-07
0.4285471.3863611.311310e-07
0.4304121.3861891.298653e-07
0.4314541.3860931.291580e-07
0.4333531.3859211.283619e-07
0.4344021.3858271.279220e-07
0.4363141.3856581.271024e-07
0.437391.3855641.266410e-07
0.4392951.3853981.260246e-07
0.4404191.3853021.256610e-07
0.4422971.3851431.242876e-07
0.4434911.3850421.234140e-07
0.4453191.3848911.215873e-07
0.4466051.3847851.203020e-07
0.4483621.3846421.178142e-07
0.4497641.384531.158280e-07
0.4514251.3843981.135695e-07
0.4529681.3842771.114720e-07
0.454511.3841571.086078e-07
0.4562181.3840261.054340e-07
0.4576151.3839191.034244e-07
0.4595151.3837771.006920e-07
0.4607421.3836859.886309e-08
0.4628591.383539.570780e-08
0.463891.3834559.529401e-08
0.4662531.3832859.434590e-08
0.467061.3832279.413698e-08
0.4696971.3830429.345420e-08
0.4702511.3830039.332859e-08
0.4731921.3828019.266210e-08
0.4734641.3827839.271510e-08
0.4766991.3825659.334461e-08
0.476741.3825639.335250e-08
0.4799571.3823519.257759e-08
0.4803411.3823269.248500e-08
0.4832361.382148.671555e-08
0.4839971.3820918.519920e-08
0.4865381.3819318.007429e-08
0.4877091.3818597.771240e-08
0.4898621.3817267.416478e-08
0.4914781.3816287.150310e-08
0.493211.3815246.931368e-08
0.4953071.3813996.666150e-08
0.496581.3813246.557200e-08
0.4991951.3811736.333270e-08
0.4999731.3811286.352851e-08
0.5031451.3809486.432740e-08
0.5033891.3809346.446736e-08
0.5068281.3807436.644210e-08
0.5071571.3807256.663080e-08
0.5102911.3805557.028562e-08
0.5112351.3805057.138590e-08
0.5137781.380377.289329e-08
0.5153781.3802867.384160e-08
0.5172891.3801877.499190e-08
0.5195891.3800697.637680e-08
0.5208231.3800067.710959e-08
0.523871.3798547.891860e-08
0.5243821.3798297.916127e-08
0.5279651.3796548.085991e-08
0.5282221.3796418.098180e-08
0.5315721.3794818.140355e-08
0.5326461.379438.153870e-08
0.5352051.379318.231313e-08
0.5371451.3792218.290050e-08
0.5388611.3791438.280740e-08
0.5417211.3790148.265230e-08
0.5425431.3789778.275486e-08
0.546251.3788148.321715e-08
0.5463761.3788088.323280e-08
0.5499831.3786538.418294e-08
0.5511111.3786058.448010e-08
0.5537411.3784948.479816e-08
0.5559291.3784038.506280e-08
0.5575241.3783387.685508e-08
0.5608321.3782045.983940e-08
0.5613341.3781845.986161e-08
0.5651691.3780326.003132e-08
0.5658221.3780066.006020e-08
0.5690311.3778826.240845e-08
0.5709021.377816.377750e-08
0.5729191.3777346.425258e-08
0.5760741.3776166.499560e-08
0.5768341.3775886.502403e-08
0.5807751.3774446.517153e-08
0.5813411.3774246.519270e-08
0.5847441.3773026.568646e-08
0.5867051.3772336.597110e-08
0.5887391.3771626.591670e-08
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2.139781.3641050.000149801
2.145331.3640570.00014303
2.146951.3640420.0001412995
2.150911.3640070.000137053
2.156521.3639570.000131741
2.161621.363910.0001283912
2.162161.3639050.000128033
2.167831.3638530.000125706
2.173531.3637990.000123949
2.176391.3637720.0001235658
2.179261.3637450.00012318
2.185021.363690.000122844
2.190811.3636330.000121041
2.191261.3636290.0001208617
2.196631.3635760.000118701
2.202491.3635170.00011613
2.206231.363480.0001150988
2.208371.3634580.000114508
2.214291.3633970.000115023
2.220231.3633350.000117296
2.22131.3633230.0001180902
2.226211.3632710.000121722
2.232221.3632070.000123117
2.236481.363160.000135203
2.238271.3631410.000140278
2.244341.3630730.000177075
2.250451.3630040.00025316
2.251761.3629890.0002780799
2.25661.3629340.000369948
2.262771.3628620.000534786
2.267151.362810.0006095492
2.268981.3627890.000640831
2.275231.3627140.000543272
2.281511.3626370.000541663
2.282641.3626230.0005387046
2.287821.3625580.00052513
2.294171.3624780.000588819
2.298241.3624250.000723807
2.300561.3623950.000800964
2.306981.3623110.000955398
2.313431.3622250.000912935
2.313941.3622180.0009072018
2.319931.3621360.000839774
2.326451.3620460.000780408
2.329751.3619990.0007038453
2.333021.3619520.000627982
2.339621.3618570.00055487
2.345671.3617680.0005160465
2.346261.3617590.000512252
2.352941.3616590.000471918
2.359661.3615560.000423511
2.36171.3615240.0004090052
2.366411.361450.000375427
2.373211.3613410.000344364
2.377831.3612650.000326138
2.380041.3612290.000317439
2.386911.3611140.000308428
2.393821.3609950.000318529
2.394081.3609910.0003204931
2.400771.3608740.000370906
2.407771.3607480.000440536
2.410441.3606990.0004905768
2.41481.3606190.000572345
2.421881.3604850.000588782
2.426911.3603880.0005261001
2.428991.3603480.000500162
2.436151.3602060.000529416
2.443351.3600590.000611905
2.443491.3600570.0006124672
2.450591.3599080.000640655
2.457881.3597520.000652518
2.460191.3597010.0006607724
2.465211.359590.000678739
2.472581.3594230.000701748
2.4771.359320.0006452279
2.481.3592490.000606812
2.487461.359070.000504085
2.493921.358910.0004465564
2.494971.3588840.00043723
2.502521.3586910.000365018
2.510121.358490.000313731
2.510961.3584670.0003086503
2.517771.3582820.000267616
2.525461.3580650.000248971
2.528121.3579880.0002475885
2.53321.357840.000244948
2.540981.3576050.000265445
2.545391.3574680.0002865356
2.548821.357360.000302906
2.55671.3571050.000277629
2.562791.3569010.0002728852
2.564631.3568380.000271448
2.572611.3565590.000266021
2.58031.356280.0002652705
2.580651.3562670.000265236
2.588731.3559610.000282141
2.596861.3556410.000296574
2.597931.3555980.0002952443
2.605041.3553040.000286388
2.613281.354950.000291821
2.615681.3548440.0002974328
2.621561.3545780.00031119
2.62991.3541850.000317237
2.633551.3540070.0003272901
2.63831.353770.000340364
2.646741.3533320.000280649
2.651551.3530720.0002475145
2.655251.3528670.000221977
2.66381.3523750.000209756
2.669661.3520210.0002098997
2.672411.3518510.000209967
2.681081.3512930.000214244
2.68791.3508310.0002203871
2.68981.3506990.000222093
2.698591.3500610.000264236
2.706271.3494710.0003341347
2.707421.349380.000344594
2.716321.3486460.0004883
2.724761.3479030.0005611108
2.725271.3478570.000565491
2.734291.3470030.000669225
2.743361.3460770.000858808
2.743381.3460750.0008595168
2.75251.345070.00118419
2.761691.3439710.00143238
2.762121.3439160.001440614
2.770951.3427650.00160771
2.780271.3414370.00197515
2.7811.3413280.00202263
2.789651.3399670.00258694
2.79911.3383310.00343636
2.81.3381670

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
—