Optical constants
Refractive index of C3H6O (Acetone)
Chang et al. 2024: n 0.4–2.0 µm
- Data
- formula 1
- Range
- 0.4–2 µm
- Temperature
- 295 K
- Licence
- CC0-1.0
Plot
Click the plot to set the calculator wavelength.
At one wavelength
- Refractive index n
- 1.35752
- Extinction coefficient k
- 0
- Permittivity ε1
- 1.84287
- Permittivity ε2
- 0
- Absorption coefficient α
- 0 cm⁻¹
- Penetration depth δ = λ/(2πk)
- — nm
- Abbe number Vd
- 49.547
- Chromatic dispersion dn/dλ
- -0.0369438 µm⁻¹
- Group index ng
- 1.37923
- Group velocity dispersion
- 70.5628 fs²/mm
- Dispersion parameter D
- -384.957 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
# C3H6O (Acetone): Chang et al. 2024: n 0.4–2.0 µm
c3h6o = ls.fetch_refractiveindex("organic", "acetone", "Chang", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c3h6o.range_nm) # (400, 2000) nm
eps = c3h6o.eps([633]) # complex permittivityDownloads the original record once (pinned to the imported snapshot) and caches it.
import json, urllib.request
import lightsmith as ls
url = "https://materials.lightsmith.dev/v1/datasets/ds_14f5d0c9f18e/lightsmith"
c3h6o = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c3h6o.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (acetone/chang-2024).
# ... load c3h6o as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c3h6o)],
medium_index=1.0,
wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, num=81),
)
res = ls.solve(sim) # exact Mie for a sphere
print(res.q_ext) # extinction efficiency at each wavelengthSame spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).
import json, urllib.request
import lightsmith as ls
url = "https://materials.lightsmith.dev/v1/datasets/ds_14f5d0c9f18e/lightsmith?model=drude_lorentz"
c3h6o_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))A dispersive Drude–Lorentz model for time-domain solvers.
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 (formula 1), λ in µmValid from 0.4 to 2.0 µm.
Coefficients as stored
| Ci | Value |
|---|---|
| C1 | 0.0 |
| C2 | 0.8144 |
| C3 | 0.108 |
Comments and conditions
Conditions
- temperature
- 295 K
References
H.-J. Chang, N. Munera, C. Lopez-Zelaya, D. Banerjee, G. Beadie, E. W. Van Stryland, D. J. Hagan.
Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry.
Opt. Mater. Express 14, 1253–1267 (2024)
- doi:10.1364/ome.519907 Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry, Optical Materials Express (2024)
Cite
Hao-Jung Chang et al.. Refractive index measurements of liquids from 0.5 to 2 µm using Rayleigh interferometry. Optical Materials Express, 14, 1253 (2024), doi:10.1364/ome.519907; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)
Data
Computed on 400 wavelengths, the same grid as the API and the library
CSV comma separated
TXT tab separated
YAML n, k
Full database record original YAML
All quantities CSV
JSON metadata
| λ (µm) | n |
|---|---|
| 0.4 | 1.370561 |
| 0.401617 | 1.370359 |
| 0.40324 | 1.370158 |
| 0.40487 | 1.36996 |
| 0.406506 | 1.369763 |
| 0.408149 | 1.369568 |
| 0.409799 | 1.369374 |
| 0.411455 | 1.369183 |
| 0.413118 | 1.368993 |
| 0.414788 | 1.368805 |
| 0.416465 | 1.368619 |
| 0.418148 | 1.368434 |
| 0.419838 | 1.368251 |
| 0.421535 | 1.36807 |
| 0.423239 | 1.36789 |
| 0.424949 | 1.367712 |
| 0.426667 | 1.367535 |
| 0.428391 | 1.36736 |
| 0.430123 | 1.367187 |
| 0.431861 | 1.367015 |
| 0.433607 | 1.366845 |
| 0.435359 | 1.366676 |
| 0.437119 | 1.366509 |
| 0.438886 | 1.366343 |
| 0.44066 | 1.366179 |
| 0.442441 | 1.366016 |
| 0.444229 | 1.365855 |
| 0.446024 | 1.365695 |
| 0.447827 | 1.365537 |
| 0.449637 | 1.36538 |
| 0.451455 | 1.365224 |
| 0.453279 | 1.36507 |
| 0.455111 | 1.364917 |
| 0.456951 | 1.364765 |
| 0.458798 | 1.364615 |
| 0.460652 | 1.364466 |
| 0.462514 | 1.364319 |
| 0.464383 | 1.364173 |
| 0.46626 | 1.364028 |
| 0.468145 | 1.363884 |
| 0.470037 | 1.363742 |
| 0.471937 | 1.363601 |
| 0.473844 | 1.363461 |
| 0.47576 | 1.363322 |
| 0.477683 | 1.363185 |
| 0.479613 | 1.363049 |
| 0.481552 | 1.362914 |
| 0.483498 | 1.36278 |
| 0.485452 | 1.362647 |
| 0.487414 | 1.362516 |
| 0.489385 | 1.362385 |
| 0.491363 | 1.362256 |
| 0.493349 | 1.362128 |
| 0.495343 | 1.362001 |
| 0.497345 | 1.361875 |
| 0.499355 | 1.36175 |
| 0.501373 | 1.361627 |
| 0.5034 | 1.361504 |
| 0.505434 | 1.361383 |
| 0.507477 | 1.361262 |
| 0.509528 | 1.361143 |
| 0.511588 | 1.361025 |
| 0.513655 | 1.360907 |
| 0.515732 | 1.360791 |
| 0.517816 | 1.360676 |
| 0.519909 | 1.360561 |
| 0.52201 | 1.360448 |
| 0.52412 | 1.360336 |
| 0.526239 | 1.360224 |
| 0.528366 | 1.360114 |
| 0.530501 | 1.360005 |
| 0.532645 | 1.359896 |
| 0.534798 | 1.359789 |
| 0.53696 | 1.359682 |
| 0.53913 | 1.359576 |
| 0.541309 | 1.359471 |
| 0.543497 | 1.359368 |
| 0.545694 | 1.359265 |
| 0.547899 | 1.359162 |
| 0.550114 | 1.359061 |
| 0.552337 | 1.358961 |
| 0.55457 | 1.358861 |
| 0.556811 | 1.358763 |
| 0.559062 | 1.358665 |
| 0.561321 | 1.358568 |
| 0.56359 | 1.358472 |
| 0.565868 | 1.358377 |
| 0.568155 | 1.358282 |
| 0.570452 | 1.358189 |
| 0.572757 | 1.358096 |
| 0.575072 | 1.358004 |
| 0.577397 | 1.357912 |
| 0.57973 | 1.357822 |
| 0.582073 | 1.357732 |
| 0.584426 | 1.357643 |
| 0.586788 | 1.357555 |
| 0.58916 | 1.357468 |
| 0.591541 | 1.357381 |
| 0.593932 | 1.357295 |
| 0.596333 | 1.35721 |
| 0.598743 | 1.357125 |
| 0.601163 | 1.357041 |
| 0.603593 | 1.356958 |
| 0.606032 | 1.356876 |
| 0.608482 | 1.356794 |
| 0.610941 | 1.356713 |
| 0.613411 | 1.356633 |
| 0.61589 | 1.356553 |
| 0.618379 | 1.356474 |
| 0.620879 | 1.356396 |
| 0.623388 | 1.356319 |
| 0.625908 | 1.356242 |
| 0.628438 | 1.356165 |
| 0.630978 | 1.35609 |
| 0.633528 | 1.356015 |
| 0.636088 | 1.35594 |
| 0.638659 | 1.355867 |
| 0.641241 | 1.355794 |
| 0.643833 | 1.355721 |
| 0.646435 | 1.355649 |
| 0.649048 | 1.355578 |
| 0.651671 | 1.355507 |
| 0.654305 | 1.355437 |
| 0.656949 | 1.355368 |
| 0.659605 | 1.355299 |
| 0.662271 | 1.35523 |
| 0.664948 | 1.355163 |
| 0.667635 | 1.355095 |
| 0.670334 | 1.355029 |
| 0.673043 | 1.354963 |
| 0.675763 | 1.354897 |
| 0.678495 | 1.354832 |
| 0.681237 | 1.354768 |
| 0.68399 | 1.354704 |
| 0.686755 | 1.354641 |
| 0.689531 | 1.354578 |
| 0.692318 | 1.354516 |
| 0.695116 | 1.354454 |
| 0.697925 | 1.354393 |
| 0.700746 | 1.354332 |
| 0.703579 | 1.354272 |
| 0.706422 | 1.354212 |
| 0.709278 | 1.354153 |
| 0.712144 | 1.354094 |
| 0.715023 | 1.354036 |
| 0.717913 | 1.353978 |
| 0.720814 | 1.353921 |
| 0.723728 | 1.353864 |
| 0.726653 | 1.353808 |
| 0.72959 | 1.353752 |
| 0.732539 | 1.353697 |
| 0.7355 | 1.353642 |
| 0.738472 | 1.353588 |
| 0.741457 | 1.353534 |
| 0.744454 | 1.35348 |
| 0.747463 | 1.353427 |
| 0.750484 | 1.353374 |
| 0.753517 | 1.353322 |
| 0.756563 | 1.35327 |
| 0.759621 | 1.353219 |
| 0.762691 | 1.353168 |
| 0.765774 | 1.353118 |
| 0.768869 | 1.353068 |
| 0.771977 | 1.353018 |
| 0.775097 | 1.352969 |
| 0.77823 | 1.35292 |
| 0.781375 | 1.352872 |
| 0.784533 | 1.352824 |
| 0.787704 | 1.352776 |
| 0.790888 | 1.352729 |
| 0.794085 | 1.352682 |
| 0.797294 | 1.352635 |
| 0.800517 | 1.352589 |
| 0.803752 | 1.352544 |
| 0.807001 | 1.352498 |
| 0.810263 | 1.352454 |
| 0.813538 | 1.352409 |
| 0.816826 | 1.352365 |
| 0.820127 | 1.352321 |
| 0.823442 | 1.352278 |
| 0.82677 | 1.352234 |
| 0.830112 | 1.352192 |
| 0.833467 | 1.352149 |
| 0.836836 | 1.352107 |
| 0.840218 | 1.352066 |
| 0.843614 | 1.352024 |
| 0.847024 | 1.351983 |
| 0.850447 | 1.351943 |
| 0.853885 | 1.351902 |
| 0.857336 | 1.351862 |
| 0.860801 | 1.351823 |
| 0.86428 | 1.351783 |
| 0.867774 | 1.351744 |
| 0.871281 | 1.351706 |
| 0.874803 | 1.351667 |
| 0.878338 | 1.351629 |
| 0.881888 | 1.351592 |
| 0.885453 | 1.351554 |
| 0.889032 | 1.351517 |
| 0.892625 | 1.35148 |
| 0.896233 | 1.351444 |
| 0.899855 | 1.351408 |
| 0.903492 | 1.351372 |
| 0.907144 | 1.351336 |
| 0.910811 | 1.351301 |
| 0.914492 | 1.351266 |
| 0.918188 | 1.351231 |
| 0.921899 | 1.351197 |
| 0.925626 | 1.351162 |
| 0.929367 | 1.351129 |
| 0.933123 | 1.351095 |
| 0.936895 | 1.351062 |
| 0.940681 | 1.351029 |
| 0.944483 | 1.350996 |
| 0.948301 | 1.350963 |
| 0.952134 | 1.350931 |
| 0.955982 | 1.350899 |
| 0.959846 | 1.350867 |
| 0.963726 | 1.350836 |
| 0.967621 | 1.350805 |
| 0.971532 | 1.350774 |
| 0.975458 | 1.350743 |
| 0.979401 | 1.350713 |
| 0.98336 | 1.350683 |
| 0.987334 | 1.350653 |
| 0.991325 | 1.350623 |
| 0.995332 | 1.350593 |
| 0.999355 | 1.350564 |
| 1.00339 | 1.350535 |
| 1.00745 | 1.350507 |
| 1.01152 | 1.350478 |
| 1.01561 | 1.35045 |
| 1.01971 | 1.350422 |
| 1.02384 | 1.350394 |
| 1.02797 | 1.350366 |
| 1.03213 | 1.350339 |
| 1.0363 | 1.350312 |
| 1.04049 | 1.350285 |
| 1.04469 | 1.350258 |
| 1.04892 | 1.350232 |
| 1.05316 | 1.350206 |
| 1.05741 | 1.35018 |
| 1.06169 | 1.350154 |
| 1.06598 | 1.350128 |
| 1.07029 | 1.350103 |
| 1.07461 | 1.350078 |
| 1.07896 | 1.350053 |
| 1.08332 | 1.350028 |
| 1.0877 | 1.350003 |
| 1.09209 | 1.349979 |
| 1.09651 | 1.349955 |
| 1.10094 | 1.349931 |
| 1.10539 | 1.349907 |
| 1.10986 | 1.349883 |
| 1.11434 | 1.34986 |
| 1.11885 | 1.349837 |
| 1.12337 | 1.349814 |
| 1.12791 | 1.349791 |
| 1.13247 | 1.349768 |
| 1.13704 | 1.349746 |
| 1.14164 | 1.349724 |
| 1.14625 | 1.349702 |
| 1.15089 | 1.34968 |
| 1.15554 | 1.349658 |
| 1.16021 | 1.349636 |
| 1.1649 | 1.349615 |
| 1.16961 | 1.349594 |
| 1.17433 | 1.349573 |
| 1.17908 | 1.349552 |
| 1.18385 | 1.349531 |
| 1.18863 | 1.349511 |
| 1.19344 | 1.34949 |
| 1.19826 | 1.34947 |
| 1.2031 | 1.34945 |
| 1.20797 | 1.34943 |
| 1.21285 | 1.349411 |
| 1.21775 | 1.349391 |
| 1.22267 | 1.349372 |
| 1.22761 | 1.349353 |
| 1.23258 | 1.349334 |
| 1.23756 | 1.349315 |
| 1.24256 | 1.349296 |
| 1.24758 | 1.349277 |
| 1.25262 | 1.349259 |
| 1.25769 | 1.349241 |
| 1.26277 | 1.349222 |
| 1.26787 | 1.349204 |
| 1.273 | 1.349187 |
| 1.27814 | 1.349169 |
| 1.28331 | 1.349151 |
| 1.2885 | 1.349134 |
| 1.2937 | 1.349117 |
| 1.29893 | 1.349099 |
| 1.30418 | 1.349082 |
| 1.30945 | 1.349066 |
| 1.31475 | 1.349049 |
| 1.32006 | 1.349032 |
| 1.3254 | 1.349016 |
| 1.33075 | 1.348999 |
| 1.33613 | 1.348983 |
| 1.34153 | 1.348967 |
| 1.34696 | 1.348951 |
| 1.3524 | 1.348936 |
| 1.35787 | 1.34892 |
| 1.36335 | 1.348904 |
| 1.36886 | 1.348889 |
| 1.3744 | 1.348874 |
| 1.37995 | 1.348858 |
| 1.38553 | 1.348843 |
| 1.39113 | 1.348828 |
| 1.39675 | 1.348814 |
| 1.4024 | 1.348799 |
| 1.40807 | 1.348784 |
| 1.41376 | 1.34877 |
| 1.41947 | 1.348756 |
| 1.42521 | 1.348741 |
| 1.43097 | 1.348727 |
| 1.43675 | 1.348713 |
| 1.44256 | 1.3487 |
| 1.44839 | 1.348686 |
| 1.45424 | 1.348672 |
| 1.46012 | 1.348659 |
| 1.46602 | 1.348645 |
| 1.47195 | 1.348632 |
| 1.4779 | 1.348619 |
| 1.48387 | 1.348606 |
| 1.48987 | 1.348593 |
| 1.49589 | 1.34858 |
| 1.50194 | 1.348567 |
| 1.50801 | 1.348554 |
| 1.5141 | 1.348542 |
| 1.52022 | 1.348529 |
| 1.52637 | 1.348517 |
| 1.53254 | 1.348505 |
| 1.53873 | 1.348492 |
| 1.54495 | 1.34848 |
| 1.55119 | 1.348468 |
| 1.55746 | 1.348457 |
| 1.56376 | 1.348445 |
| 1.57008 | 1.348433 |
| 1.57643 | 1.348421 |
| 1.5828 | 1.34841 |
| 1.58919 | 1.348399 |
| 1.59562 | 1.348387 |
| 1.60207 | 1.348376 |
| 1.60854 | 1.348365 |
| 1.61504 | 1.348354 |
| 1.62157 | 1.348343 |
| 1.62813 | 1.348332 |
| 1.63471 | 1.348321 |
| 1.64131 | 1.348311 |
| 1.64795 | 1.3483 |
| 1.65461 | 1.348289 |
| 1.6613 | 1.348279 |
| 1.66801 | 1.348269 |
| 1.67475 | 1.348258 |
| 1.68152 | 1.348248 |
| 1.68832 | 1.348238 |
| 1.69514 | 1.348228 |
| 1.70199 | 1.348218 |
| 1.70887 | 1.348208 |
| 1.71578 | 1.348199 |
| 1.72271 | 1.348189 |
| 1.72968 | 1.348179 |
| 1.73667 | 1.34817 |
| 1.74369 | 1.34816 |
| 1.75074 | 1.348151 |
| 1.75781 | 1.348142 |
| 1.76492 | 1.348132 |
| 1.77205 | 1.348123 |
| 1.77921 | 1.348114 |
| 1.7864 | 1.348105 |
| 1.79362 | 1.348096 |
| 1.80087 | 1.348087 |
| 1.80815 | 1.348079 |
| 1.81546 | 1.34807 |
| 1.8228 | 1.348061 |
| 1.83017 | 1.348053 |
| 1.83756 | 1.348044 |
| 1.84499 | 1.348036 |
| 1.85245 | 1.348027 |
| 1.85993 | 1.348019 |
| 1.86745 | 1.348011 |
| 1.875 | 1.348003 |
| 1.88258 | 1.347994 |
| 1.89019 | 1.347986 |
| 1.89783 | 1.347978 |
| 1.9055 | 1.347971 |
| 1.9132 | 1.347963 |
| 1.92093 | 1.347955 |
| 1.9287 | 1.347947 |
| 1.93649 | 1.34794 |
| 1.94432 | 1.347932 |
| 1.95218 | 1.347924 |
| 1.96007 | 1.347917 |
| 1.96799 | 1.34791 |
| 1.97594 | 1.347902 |
| 1.98393 | 1.347895 |
| 1.99195 | 1.347888 |
| 2 | 1.34788 |
Optical transmission calculator
Free-standing sample in vacuum, normal incidence- Transmittance T
- —
- Reflectance R
- —
Fresnel reflection calculator
- Rp
- —
- Rs
- —
- R = (Rp+Rs)/2
- —
- Phase φp
- —
- Phase φs
- —
- Brewster angle θB
- —
- Critical angle θC
- —
21.5–22.0 °C.